0/*
1 * m3d.h
2 * https://gitlab.com/bztsrc/model3d
3 *
4 * Copyright (C) 2020 bzt (bztsrc@gitlab)
5 *
6 * Permission is hereby granted, free of charge, to any person
7 * obtaining a copy of this software and associated documentation
8 * files (the "Software"), to deal in the Software without
9 * restriction, including without limitation the rights to use, copy,
10 * modify, merge, publish, distribute, sublicense, and/or sell copies
11 * of the Software, and to permit persons to whom the Software is
12 * furnished to do so, subject to the following conditions:
13 *
14 * The above copyright notice and this permission notice shall be
15 * included in all copies or substantial portions of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
18 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
20 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
21 * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
22 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
23 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
24 * DEALINGS IN THE SOFTWARE.
25 *
26 * @brief ANSI C89 / C++11 single header importer / exporter SDK for the Model 3D (.M3D) format
27 * https://gitlab.com/bztsrc/model3d
28 *
29 * PNG decompressor included from (with minor modifications to make it C89 valid):
30 * stb_image - v2.13 - public domain image loader - http://nothings.org/stb_image.h
31 *
32 * @version: 1.0.0
33 */
35#ifndef _M3D_H_
36#define _M3D_H_
38#ifdef __cplusplus
39extern "C" {
40#endif
42#include <stdint.h>
44/*** configuration ***/
45#ifndef M3D_MALLOC
46# define M3D_MALLOC(sz) malloc(sz)
47#endif
48#ifndef M3D_REALLOC
49# define M3D_REALLOC(p,nsz) realloc(p,nsz)
50#endif
51#ifndef M3D_FREE
52# define M3D_FREE(p) free(p)
53#endif
54#ifndef M3D_LOG
55# define M3D_LOG(x)
56#endif
57#ifndef M3D_APIVERSION
58#define M3D_APIVERSION 0x0100
59#ifndef M3D_DOUBLE
60typedef float M3D_FLOAT;
61#ifndef M3D_EPSILON
62/* carefully choosen for IEEE 754 don't change */
63#define M3D_EPSILON ((M3D_FLOAT)1e-7)
64#endif
65#else
66typedef double M3D_FLOAT;
67#ifndef M3D_EPSILON
68#define M3D_EPSILON ((M3D_FLOAT)1e-14)
69#endif
70#endif
71#if !defined(M3D_SMALLINDEX)
72typedef uint32_t M3D_INDEX;
73typedef uint16_t M3D_VOXEL;
74#define M3D_UNDEF 0xffffffff
75#define M3D_INDEXMAX 0xfffffffe
76#define M3D_VOXUNDEF 0xffff
77#define M3D_VOXCLEAR 0xfffe
78#else
79typedef uint16_t M3D_INDEX;
80typedef uint8_t M3D_VOXEL;
81#define M3D_UNDEF 0xffff
82#define M3D_INDEXMAX 0xfffe
83#define M3D_VOXUNDEF 0xff
84#define M3D_VOXCLEAR 0xfe
85#endif
86#define M3D_NOTDEFINED 0xffffffff
87#ifndef M3D_NUMBONE
88#define M3D_NUMBONE 4
89#endif
90#ifndef M3D_BONEMAXLEVEL
91#define M3D_BONEMAXLEVEL 64
92#endif
93#ifndef _MSC_VER
94#ifndef _inline
95#define _inline __inline__
96#endif
97#define _pack __attribute__((packed))
98#define _unused __attribute__((unused))
99#else
100#define _inline
101#define _pack
102#define _unused __pragma(warning(suppress:4100))
103#endif
104#ifndef __cplusplus
105#define _register register
106#else
107#define _register
108#endif
110/*** File format structures ***/
112/**
113 * M3D file format structure
114 * 3DMO m3dchunk_t file header chunk, may followed by compressed data
115 * PRVW preview chunk (optional)
116 * HEAD m3dhdr_t model header chunk
117 * n x m3dchunk_t more chunks follow
118 * CMAP color map chunk (optional)
119 * TMAP texture map chunk (optional)
120 * VRTS vertex data chunk (optional if it's a material library)
121 * BONE bind-pose skeleton, bone hierarchy chunk (optional)
122 * n x m3db_t contains propably more, but at least one bone
123 * n x m3ds_t skin group records
124 * MTRL* material chunk(s), can be more (optional)
125 * n x m3dp_t each material contains propapbly more, but at least one property
126 * the properties are configurable with a static array, see m3d_propertytypes
127 * n x m3dchunk_t at least one, but maybe more face chunks
128 * PROC* procedural face, or
129 * MESH* triangle mesh (vertex index list) or
130 * VOXT, VOXD* voxel image (converted to mesh) or
131 * SHPE* mathematical shapes like parameterized surfaces
132 * LBLS* annotation label chunks, can be more (optional)
133 * ACTN* action chunk(s), animation-pose skeletons, can be more (optional)
134 * n x m3dfr_t each action contains probably more, but at least one frame
135 * n x m3dtr_t each frame contains probably more, but at least one transformation
136 * ASET* inlined asset chunk(s), can be more (optional)
137 * OMD3 end chunk
138 *
139 * Typical chunks for a game engine: 3DMO, HEAD, CMAP, TMAP, VRTS, BONE, MTRL, MESH, ACTN, OMD3
140 * Typical chunks for distibution: 3DMO, PRVW, HEAD, CMAP, TMAP, VRTS, BONE, MTRL, MESH, ACTN, ASET, OMD3
141 * Typical chunks for voxel image: 3DMO, HEAD, CMAP, MTRL, VOXT, VOXD, VOXD, VOXD, OMD3
142 * Typical chunks for CAD software: 3DMO, PRVW, HEAD, CMAP, TMAP, VRTS, MTRL, SHPE, LBLS, OMD3
143 */
144#ifdef _MSC_VER
145#pragma pack(push)
146#pragma pack(1)
147#endif
149typedef struct {
150 char magic[4];
151 uint32_t length;
152 float scale; /* deliberately not M3D_FLOAT */
153 uint32_t types;
154} _pack m3dhdr_t;
156typedef struct {
157 char magic[4];
158 uint32_t length;
159} _pack m3dchunk_t;
161#ifdef _MSC_VER
162#pragma pack(pop)
163#endif
165/*** in-memory model structure ***/
167/* textmap entry */
168typedef struct {
169 M3D_FLOAT u;
170 M3D_FLOAT v;
171} m3dti_t;
172#define m3d_textureindex_t m3dti_t
174/* texture */
175typedef struct {
176 char *name; /* texture name */
177 uint8_t *d; /* pixels data */
178 uint16_t w; /* width */
179 uint16_t h; /* height */
180 uint8_t f; /* format, 1 = grayscale, 2 = grayscale+alpha, 3 = rgb, 4 = rgba */
181} m3dtx_t;
182#define m3d_texturedata_t m3dtx_t
184typedef struct {
185 M3D_INDEX vertexid;
186 M3D_FLOAT weight;
187} m3dw_t;
188#define m3d_weight_t m3dw_t
190/* bone entry */
191typedef struct {
192 M3D_INDEX parent; /* parent bone index */
193 char *name; /* name for this bone */
194 M3D_INDEX pos; /* vertex index position */
195 M3D_INDEX ori; /* vertex index orientation (quaternion) */
196 M3D_INDEX numweight; /* number of controlled vertices */
197 m3dw_t *weight; /* weights for those vertices */
198 M3D_FLOAT mat4[16]; /* transformation matrix */
199} m3db_t;
200#define m3d_bone_t m3db_t
202/* skin: bone per vertex entry */
203typedef struct {
204 M3D_INDEX boneid[M3D_NUMBONE];
205 M3D_FLOAT weight[M3D_NUMBONE];
206} m3ds_t;
207#define m3d_skin_t m3ds_t
209/* vertex entry */
210typedef struct {
211 M3D_FLOAT x; /* 3D coordinates and weight */
212 M3D_FLOAT y;
213 M3D_FLOAT z;
214 M3D_FLOAT w;
215 uint32_t color; /* default vertex color */
216 M3D_INDEX skinid; /* skin index */
217#ifdef M3D_VERTEXTYPE
218 uint8_t type;
219#endif
220} m3dv_t;
221#define m3d_vertex_t m3dv_t
223/* material property formats */
224enum {
225 m3dpf_color,
226 m3dpf_uint8,
227 m3dpf_uint16,
228 m3dpf_uint32,
229 m3dpf_float,
230 m3dpf_map
231};
232typedef struct {
233 uint8_t format;
234 uint8_t id;
235#ifdef M3D_ASCII
236#define M3D_PROPERTYDEF(f,i,n) { (f), (i), (char*)(n) }
237 char *key;
238#else
239#define M3D_PROPERTYDEF(f,i,n) { (f), (i) }
240#endif
241} m3dpd_t;
243/* material property types */
244/* You shouldn't change the first 8 display and first 4 physical property. Assign the rest as you like. */
245enum {
246 m3dp_Kd = 0, /* scalar display properties */
247 m3dp_Ka,
248 m3dp_Ks,
249 m3dp_Ns,
250 m3dp_Ke,
251 m3dp_Tf,
252 m3dp_Km,
253 m3dp_d,
254 m3dp_il,
256 m3dp_Pr = 64, /* scalar physical properties */
257 m3dp_Pm,
258 m3dp_Ps,
259 m3dp_Ni,
260 m3dp_Nt,
262 m3dp_map_Kd = 128, /* textured display map properties */
263 m3dp_map_Ka,
264 m3dp_map_Ks,
265 m3dp_map_Ns,
266 m3dp_map_Ke,
267 m3dp_map_Tf,
268 m3dp_map_Km, /* bump map */
269 m3dp_map_D,
270 m3dp_map_N, /* normal map */
272 m3dp_map_Pr = 192, /* textured physical map properties */
273 m3dp_map_Pm,
274 m3dp_map_Ps,
275 m3dp_map_Ni,
276 m3dp_map_Nt
277};
278enum { /* aliases */
279 m3dp_bump = m3dp_map_Km,
280 m3dp_map_il = m3dp_map_N,
281 m3dp_refl = m3dp_map_Pm
282};
284/* material property */
285typedef struct {
286 uint8_t type; /* property type, see "m3dp_*" enumeration */
287 union {
288 uint32_t color; /* if value is a color, m3dpf_color */
289 uint32_t num; /* if value is a number, m3dpf_uint8, m3pf_uint16, m3dpf_uint32 */
290 float fnum; /* if value is a floating point number, m3dpf_float */
291 M3D_INDEX textureid; /* if value is a texture, m3dpf_map */
292 } value;
293} m3dp_t;
294#define m3d_property_t m3dp_t
296/* material entry */
297typedef struct {
298 char *name; /* name of the material */
299 uint8_t numprop; /* number of properties */
300 m3dp_t *prop; /* properties array */
301} m3dm_t;
302#define m3d_material_t m3dm_t
304/* face entry */
305typedef struct {
306 M3D_INDEX materialid; /* material index */
307 M3D_INDEX vertex[3]; /* 3D points of the triangle in CCW order */
308 M3D_INDEX normal[3]; /* normal vectors */
309 M3D_INDEX texcoord[3]; /* UV coordinates */
310#ifdef M3D_VERTEXMAX
311 M3D_INDEX paramid; /* parameter index */
312 M3D_INDEX vertmax[3]; /* maximum 3D points of the triangle in CCW order */
313#endif
314} m3df_t;
315#define m3d_face_t m3df_t
317typedef struct {
318 uint16_t count;
319 char *name;
320} m3dvi_t;
321#define m3d_voxelitem_t m3dvi_t
322#define m3d_parameter_t m3dvi_t
324/* voxel types (voxel palette) */
325typedef struct {
326 char *name; /* technical name of the voxel */
327 uint8_t rotation; /* rotation info */
328 uint16_t voxshape; /* voxel shape */
329 M3D_INDEX materialid; /* material index */
330 uint32_t color; /* default voxel color */
331 M3D_INDEX skinid; /* skin index */
332 uint8_t numitem; /* number of sub-voxels */
333 m3dvi_t *item; /* list of sub-voxels */
334} m3dvt_t;
335#define m3d_voxeltype_t m3dvt_t
337/* voxel data blocks */
338typedef struct {
339 char *name; /* name of the block */
340 int32_t x, y, z; /* position */
341 uint32_t w, h, d; /* dimension */
342 uint8_t uncertain; /* probability */
343 uint8_t groupid; /* block group id */
344 M3D_VOXEL *data; /* voxel data, indices to voxel type */
345} m3dvx_t;
346#define m3d_voxel_t m3dvx_t
348/* shape command types. must match the row in m3d_commandtypes */
349enum {
350 /* special commands */
351 m3dc_use = 0, /* use material */
352 m3dc_inc, /* include another shape */
353 m3dc_mesh, /* include part of polygon mesh */
354 /* approximations */
355 m3dc_div, /* subdivision by constant resolution for both u, v */
356 m3dc_sub, /* subdivision by constant, different for u and v */
357 m3dc_len, /* spacial subdivision by maxlength */
358 m3dc_dist, /* subdivision by maxdistance and maxangle */
359 /* modifiers */
360 m3dc_degu, /* degree for both u, v */
361 m3dc_deg, /* separate degree for u and v */
362 m3dc_rangeu, /* range for u */
363 m3dc_range, /* range for u and v */
364 m3dc_paru, /* u parameters (knots) */
365 m3dc_parv, /* v parameters */
366 m3dc_trim, /* outer trimming curve */
367 m3dc_hole, /* inner trimming curve */
368 m3dc_scrv, /* spacial curve */
369 m3dc_sp, /* special points */
370 /* helper curves */
371 m3dc_bez1, /* Bezier 1D */
372 m3dc_bsp1, /* B-spline 1D */
373 m3dc_bez2, /* bezier 2D */
374 m3dc_bsp2, /* B-spline 2D */
375 /* surfaces */
376 m3dc_bezun, /* Bezier 3D with control, UV, normal */
377 m3dc_bezu, /* with control and UV */
378 m3dc_bezn, /* with control and normal */
379 m3dc_bez, /* control points only */
380 m3dc_nurbsun, /* B-spline 3D */
381 m3dc_nurbsu,
382 m3dc_nurbsn,
383 m3dc_nurbs,
384 m3dc_conn, /* connect surfaces */
385 /* geometrical */
386 m3dc_line,
387 m3dc_polygon,
388 m3dc_circle,
389 m3dc_cylinder,
390 m3dc_shpere,
391 m3dc_torus,
392 m3dc_cone,
393 m3dc_cube
394};
396/* shape command argument types */
397enum {
398 m3dcp_mi_t = 1, /* material index */
399 m3dcp_hi_t, /* shape index */
400 m3dcp_fi_t, /* face index */
401 m3dcp_ti_t, /* texture map index */
402 m3dcp_vi_t, /* vertex index */
403 m3dcp_qi_t, /* vertex index for quaternions */
404 m3dcp_vc_t, /* coordinate or radius, float scalar */
405 m3dcp_i1_t, /* int8 scalar */
406 m3dcp_i2_t, /* int16 scalar */
407 m3dcp_i4_t, /* int32 scalar */
408 m3dcp_va_t /* variadic arguments */
409};
411#define M3D_CMDMAXARG 8 /* if you increase this, add more arguments to the macro below */
412typedef struct {
413#ifdef M3D_ASCII
414#define M3D_CMDDEF(t,n,p,a,b,c,d,e,f,g,h) { (char*)(n), (p), { (a), (b), (c), (d), (e), (f), (g), (h) } }
415 char *key;
416#else
417#define M3D_CMDDEF(t,n,p,a,b,c,d,e,f,g,h) { (p), { (a), (b), (c), (d), (e), (f), (g), (h) } }
418#endif
419 uint8_t p;
420 uint8_t a[M3D_CMDMAXARG];
421} m3dcd_t;
423/* shape command */
424typedef struct {
425 uint16_t type; /* shape type */
426 uint32_t *arg; /* arguments array */
427} m3dc_t;
428#define m3d_shapecommand_t m3dc_t
430/* shape entry */
431typedef struct {
432 char *name; /* name of the mathematical shape */
433 M3D_INDEX group; /* group this shape belongs to or -1 */
434 uint32_t numcmd; /* number of commands */
435 m3dc_t *cmd; /* commands array */
436} m3dh_t;
437#define m3d_shape_t m3dh_t
439/* label entry */
440typedef struct {
441 char *name; /* name of the annotation layer or NULL */
442 char *lang; /* language code or NULL */
443 char *text; /* the label text */
444 uint32_t color; /* color */
445 M3D_INDEX vertexid; /* the vertex the label refers to */
446} m3dl_t;
447#define m3d_label_t m3dl_t
449/* frame transformations / working copy skeleton entry */
450typedef struct {
451 M3D_INDEX boneid; /* selects a node in bone hierarchy */
452 M3D_INDEX pos; /* vertex index new position */
453 M3D_INDEX ori; /* vertex index new orientation (quaternion) */
454} m3dtr_t;
455#define m3d_transform_t m3dtr_t
457/* animation frame entry */
458typedef struct {
459 uint32_t msec; /* frame's position on the timeline, timestamp */
460 M3D_INDEX numtransform; /* number of transformations in this frame */
461 m3dtr_t *transform; /* transformations */
462} m3dfr_t;
463#define m3d_frame_t m3dfr_t
465/* model action entry */
466typedef struct {
467 char *name; /* name of the action */
468 uint32_t durationmsec; /* duration in millisec (1/1000 sec) */
469 M3D_INDEX numframe; /* number of frames in this animation */
470 m3dfr_t *frame; /* frames array */
471} m3da_t;
472#define m3d_action_t m3da_t
474/* inlined asset */
475typedef struct {
476 char *name; /* asset name (same pointer as in texture[].name) */
477 uint8_t *data; /* compressed asset data */
478 uint32_t length; /* compressed data length */
479} m3di_t;
480#define m3d_inlinedasset_t m3di_t
482/*** in-memory model structure ***/
483#define M3D_FLG_FREERAW (1<<0)
484#define M3D_FLG_FREESTR (1<<1)
485#define M3D_FLG_MTLLIB (1<<2)
486#define M3D_FLG_GENNORM (1<<3)
488typedef struct {
489 m3dhdr_t *raw; /* pointer to raw data */
490 char flags; /* internal flags */
491 signed char errcode; /* returned error code */
492 char vc_s, vi_s, si_s, ci_s, ti_s, bi_s, nb_s, sk_s, fc_s, hi_s, fi_s, vd_s, vp_s; /* decoded sizes for types */
493 char *name; /* name of the model, like "Utah teapot" */
494 char *license; /* usage condition or license, like "MIT", "LGPL" or "BSD-3clause" */
495 char *author; /* nickname, email, homepage or github URL etc. */
496 char *desc; /* comments, descriptions. May contain '\n' newline character */
497 M3D_FLOAT scale; /* the model's bounding cube's size in SI meters */
498 M3D_INDEX numcmap;
499 uint32_t *cmap; /* color map */
500 M3D_INDEX numtmap;
501 m3dti_t *tmap; /* texture map indices */
502 M3D_INDEX numtexture;
503 m3dtx_t *texture; /* uncompressed textures */
504 M3D_INDEX numbone;
505 m3db_t *bone; /* bone hierarchy */
506 M3D_INDEX numvertex;
507 m3dv_t *vertex; /* vertex data */
508 M3D_INDEX numskin;
509 m3ds_t *skin; /* skin data */
510 M3D_INDEX nummaterial;
511 m3dm_t *material; /* material list */
512#ifdef M3D_VERTEXMAX
513 M3D_INDEX numparam;
514 m3dvi_t *param; /* parameters and their values list */
515#endif
516 M3D_INDEX numface;
517 m3df_t *face; /* model face, polygon (triangle) mesh */
518 M3D_INDEX numvoxtype;
519 m3dvt_t *voxtype; /* model face, voxel types */
520 M3D_INDEX numvoxel;
521 m3dvx_t *voxel; /* model face, cubes compressed into voxels */
522 M3D_INDEX numshape;
523 m3dh_t *shape; /* model face, shape commands */
524 M3D_INDEX numlabel;
525 m3dl_t *label; /* annotation labels */
526 M3D_INDEX numaction;
527 m3da_t *action; /* action animations */
528 M3D_INDEX numinlined;
529 m3di_t *inlined; /* inlined assets */
530 M3D_INDEX numextra;
531 m3dchunk_t **extra; /* unknown chunks, application / engine specific data probably */
532 m3di_t preview; /* preview chunk */
533} m3d_t;
535/*** export parameters ***/
536#define M3D_EXP_INT8 0
537#define M3D_EXP_INT16 1
538#define M3D_EXP_FLOAT 2
539#define M3D_EXP_DOUBLE 3
541#define M3D_EXP_NOCMAP (1<<0)
542#define M3D_EXP_NOMATERIAL (1<<1)
543#define M3D_EXP_NOFACE (1<<2)
544#define M3D_EXP_NONORMAL (1<<3)
545#define M3D_EXP_NOTXTCRD (1<<4)
546#define M3D_EXP_FLIPTXTCRD (1<<5)
547#define M3D_EXP_NORECALC (1<<6)
548#define M3D_EXP_IDOSUCK (1<<7)
549#define M3D_EXP_NOBONE (1<<8)
550#define M3D_EXP_NOACTION (1<<9)
551#define M3D_EXP_INLINE (1<<10)
552#define M3D_EXP_EXTRA (1<<11)
553#define M3D_EXP_NOZLIB (1<<14)
554#define M3D_EXP_ASCII (1<<15)
555#define M3D_EXP_NOVRTMAX (1<<16)
557/*** error codes ***/
558#define M3D_SUCCESS 0
559#define M3D_ERR_ALLOC -1
560#define M3D_ERR_BADFILE -2
561#define M3D_ERR_UNIMPL -65
562#define M3D_ERR_UNKPROP -66
563#define M3D_ERR_UNKMESH -67
564#define M3D_ERR_UNKIMG -68
565#define M3D_ERR_UNKFRAME -69
566#define M3D_ERR_UNKCMD -70
567#define M3D_ERR_UNKVOX -71
568#define M3D_ERR_TRUNC -72
569#define M3D_ERR_CMAP -73
570#define M3D_ERR_TMAP -74
571#define M3D_ERR_VRTS -75
572#define M3D_ERR_BONE -76
573#define M3D_ERR_MTRL -77
574#define M3D_ERR_SHPE -78
575#define M3D_ERR_VOXT -79
577#define M3D_ERR_ISFATAL(x) ((x) < 0 && (x) > -65)
579/* callbacks */
580typedef unsigned char *(*m3dread_t)(char *filename, unsigned int *size); /* read file contents into buffer */
581typedef void (*m3dfree_t)(void *buffer); /* free file contents buffer */
582typedef int (*m3dtxsc_t)(const char *name, const void *script, uint32_t len, m3dtx_t *output); /* interpret texture script */
583typedef int (*m3dprsc_t)(const char *name, const void *script, uint32_t len, m3d_t *model); /* interpret surface script */
584#endif /* ifndef M3D_APIVERSION */
586/*** C prototypes ***/
587/* import / export */
588m3d_t *m3d_load(unsigned char *data, m3dread_t readfilecb, m3dfree_t freecb, m3d_t *mtllib);
589unsigned char *m3d_save(m3d_t *model, int quality, int flags, unsigned int *size);
590void m3d_free(m3d_t *model);
591/* generate animation pose skeleton */
592m3dtr_t *m3d_frame(m3d_t *model, M3D_INDEX actionid, M3D_INDEX frameid, m3dtr_t *skeleton);
593m3db_t *m3d_pose(m3d_t *model, M3D_INDEX actionid, uint32_t msec);
595/* private prototypes used by both importer and exporter */
596char *_m3d_safestr(char *in, int morelines);
598/*** C implementation ***/
599#ifdef M3D_IMPLEMENTATION
600#if !defined(M3D_NOIMPORTER) || defined(M3D_EXPORTER)
601/* material property definitions */
602static m3dpd_t m3d_propertytypes[] = {
603 M3D_PROPERTYDEF(m3dpf_color, m3dp_Kd, "Kd"), /* diffuse color */
604 M3D_PROPERTYDEF(m3dpf_color, m3dp_Ka, "Ka"), /* ambient color */
605 M3D_PROPERTYDEF(m3dpf_color, m3dp_Ks, "Ks"), /* specular color */
606 M3D_PROPERTYDEF(m3dpf_float, m3dp_Ns, "Ns"), /* specular exponent */
607 M3D_PROPERTYDEF(m3dpf_color, m3dp_Ke, "Ke"), /* emissive (emitting light of this color) */
608 M3D_PROPERTYDEF(m3dpf_color, m3dp_Tf, "Tf"), /* transmission color */
609 M3D_PROPERTYDEF(m3dpf_float, m3dp_Km, "Km"), /* bump strength */
610 M3D_PROPERTYDEF(m3dpf_float, m3dp_d, "d"), /* dissolve (transparency) */
611 M3D_PROPERTYDEF(m3dpf_uint8, m3dp_il, "il"), /* illumination model (informational, ignored by PBR-shaders) */
613 M3D_PROPERTYDEF(m3dpf_float, m3dp_Pr, "Pr"), /* roughness */
614 M3D_PROPERTYDEF(m3dpf_float, m3dp_Pm, "Pm"), /* metallic, also reflection */
615 M3D_PROPERTYDEF(m3dpf_float, m3dp_Ps, "Ps"), /* sheen */
616 M3D_PROPERTYDEF(m3dpf_float, m3dp_Ni, "Ni"), /* index of refraction (optical density) */
617 M3D_PROPERTYDEF(m3dpf_float, m3dp_Nt, "Nt"), /* thickness of face in millimeter, for printing */
619 /* aliases, note that "map_*" aliases are handled automatically */
620 M3D_PROPERTYDEF(m3dpf_map, m3dp_map_Km, "bump"),
621 M3D_PROPERTYDEF(m3dpf_map, m3dp_map_N, "map_N"),/* as normal map has no scalar version, it's counterpart is 'il' */
622 M3D_PROPERTYDEF(m3dpf_map, m3dp_map_Pm, "refl")
623};
624/* shape command definitions. if more commands start with the same string, the longer must come first */
625static m3dcd_t m3d_commandtypes[] = {
626 /* technical */
627 M3D_CMDDEF(m3dc_use, "use", 1, m3dcp_mi_t, 0, 0, 0, 0, 0, 0, 0),
628 M3D_CMDDEF(m3dc_inc, "inc", 3, m3dcp_hi_t, m3dcp_vi_t, m3dcp_qi_t, m3dcp_vi_t, 0, 0, 0, 0),
629 M3D_CMDDEF(m3dc_mesh, "mesh", 1, m3dcp_fi_t, m3dcp_fi_t, m3dcp_vi_t, m3dcp_qi_t, m3dcp_vi_t, 0, 0, 0),
630 /* approximations */
631 M3D_CMDDEF(m3dc_div, "div", 1, m3dcp_vc_t, 0, 0, 0, 0, 0, 0, 0),
632 M3D_CMDDEF(m3dc_sub, "sub", 2, m3dcp_vc_t, m3dcp_vc_t, 0, 0, 0, 0, 0, 0),
633 M3D_CMDDEF(m3dc_len, "len", 1, m3dcp_vc_t, 0, 0, 0, 0, 0, 0, 0),
634 M3D_CMDDEF(m3dc_dist, "dist", 2, m3dcp_vc_t, m3dcp_vc_t, 0, 0, 0, 0, 0, 0),
635 /* modifiers */
636 M3D_CMDDEF(m3dc_degu, "degu", 1, m3dcp_i1_t, 0, 0, 0, 0, 0, 0, 0),
637 M3D_CMDDEF(m3dc_deg, "deg", 2, m3dcp_i1_t, m3dcp_i1_t, 0, 0, 0, 0, 0, 0),
638 M3D_CMDDEF(m3dc_rangeu, "rangeu", 1, m3dcp_ti_t, 0, 0, 0, 0, 0, 0, 0),
639 M3D_CMDDEF(m3dc_range, "range", 2, m3dcp_ti_t, m3dcp_ti_t, 0, 0, 0, 0, 0, 0),
640 M3D_CMDDEF(m3dc_paru, "paru", 2, m3dcp_va_t, m3dcp_vc_t, 0, 0, 0, 0, 0, 0),
641 M3D_CMDDEF(m3dc_parv, "parv", 2, m3dcp_va_t, m3dcp_vc_t, 0, 0, 0, 0, 0, 0),
642 M3D_CMDDEF(m3dc_trim, "trim", 3, m3dcp_va_t, m3dcp_ti_t, m3dcp_i2_t, 0, 0, 0, 0, 0),
643 M3D_CMDDEF(m3dc_hole, "hole", 3, m3dcp_va_t, m3dcp_ti_t, m3dcp_i2_t, 0, 0, 0, 0, 0),
644 M3D_CMDDEF(m3dc_scrv, "scrv", 3, m3dcp_va_t, m3dcp_ti_t, m3dcp_i2_t, 0, 0, 0, 0, 0),
645 M3D_CMDDEF(m3dc_sp, "sp", 2, m3dcp_va_t, m3dcp_vi_t, 0, 0, 0, 0, 0, 0),
646 /* helper curves */
647 M3D_CMDDEF(m3dc_bez1, "bez1", 2, m3dcp_va_t, m3dcp_vi_t, 0, 0, 0, 0, 0, 0),
648 M3D_CMDDEF(m3dc_bsp1, "bsp1", 2, m3dcp_va_t, m3dcp_vi_t, 0, 0, 0, 0, 0, 0),
649 M3D_CMDDEF(m3dc_bez2, "bez2", 2, m3dcp_va_t, m3dcp_vi_t, 0, 0, 0, 0, 0, 0),
650 M3D_CMDDEF(m3dc_bsp2, "bsp2", 2, m3dcp_va_t, m3dcp_vi_t, 0, 0, 0, 0, 0, 0),
651 /* surfaces */
652 M3D_CMDDEF(m3dc_bezun, "bezun", 4, m3dcp_va_t, m3dcp_vi_t, m3dcp_ti_t, m3dcp_vi_t, 0, 0, 0, 0),
653 M3D_CMDDEF(m3dc_bezu, "bezu", 3, m3dcp_va_t, m3dcp_vi_t, m3dcp_ti_t, 0, 0, 0, 0, 0),
654 M3D_CMDDEF(m3dc_bezn, "bezn", 3, m3dcp_va_t, m3dcp_vi_t, m3dcp_vi_t, 0, 0, 0, 0, 0),
655 M3D_CMDDEF(m3dc_bez, "bez", 2, m3dcp_va_t, m3dcp_vi_t, 0, 0, 0, 0, 0, 0),
656 M3D_CMDDEF(m3dc_nurbsun, "nurbsun", 4, m3dcp_va_t, m3dcp_vi_t, m3dcp_ti_t, m3dcp_vi_t, 0, 0, 0, 0),
657 M3D_CMDDEF(m3dc_nurbsu, "nurbsu", 3, m3dcp_va_t, m3dcp_vi_t, m3dcp_ti_t, 0, 0, 0, 0, 0),
658 M3D_CMDDEF(m3dc_nurbsn, "nurbsn", 3, m3dcp_va_t, m3dcp_vi_t, m3dcp_vi_t, 0, 0, 0, 0, 0),
659 M3D_CMDDEF(m3dc_nurbs, "nurbs", 2, m3dcp_va_t, m3dcp_vi_t, 0, 0, 0, 0, 0, 0),
660 M3D_CMDDEF(m3dc_conn, "conn", 6, m3dcp_i2_t, m3dcp_ti_t, m3dcp_i2_t, m3dcp_i2_t, m3dcp_ti_t, m3dcp_i2_t, 0, 0),
661 /* geometrical */
662 M3D_CMDDEF(m3dc_line, "line", 2, m3dcp_va_t, m3dcp_vi_t, 0, 0, 0, 0, 0, 0),
663 M3D_CMDDEF(m3dc_polygon, "polygon", 2, m3dcp_va_t, m3dcp_vi_t, 0, 0, 0, 0, 0, 0),
664 M3D_CMDDEF(m3dc_circle, "circle", 3, m3dcp_vi_t, m3dcp_qi_t, m3dcp_vc_t, 0, 0, 0, 0, 0),
665 M3D_CMDDEF(m3dc_cylinder,"cylinder",6, m3dcp_vi_t, m3dcp_qi_t, m3dcp_vc_t, m3dcp_vi_t, m3dcp_qi_t, m3dcp_vc_t, 0, 0),
666 M3D_CMDDEF(m3dc_shpere, "shpere", 2, m3dcp_vi_t, m3dcp_vc_t, 0, 0, 0, 0, 0, 0),
667 M3D_CMDDEF(m3dc_torus, "torus", 4, m3dcp_vi_t, m3dcp_qi_t, m3dcp_vc_t, m3dcp_vc_t, 0, 0, 0, 0),
668 M3D_CMDDEF(m3dc_cone, "cone", 3, m3dcp_vi_t, m3dcp_vi_t, m3dcp_vi_t, 0, 0, 0, 0, 0),
669 M3D_CMDDEF(m3dc_cube, "cube", 3, m3dcp_vi_t, m3dcp_vi_t, m3dcp_vi_t, 0, 0, 0, 0, 0)
670};
671#endif
673#include <stdlib.h>
674#include <string.h>
676#if !defined(M3D_NOIMPORTER) && !defined(STBI_INCLUDE_STB_IMAGE_H)
677/* PNG decompressor from
679 stb_image - v2.23 - public domain image loader - http://nothings.org/stb_image.h
680*/
681static const char *_m3dstbi__g_failure_reason;
683enum
684{
685 STBI_default = 0,
687 STBI_grey = 1,
688 STBI_grey_alpha = 2,
689 STBI_rgb = 3,
690 STBI_rgb_alpha = 4
691};
693enum
694{
695 STBI__SCAN_load=0,
696 STBI__SCAN_type,
697 STBI__SCAN_header
698};
700typedef unsigned short _m3dstbi_us;
702typedef uint16_t _m3dstbi__uint16;
703typedef int16_t _m3dstbi__int16;
704typedef uint32_t _m3dstbi__uint32;
705typedef int32_t _m3dstbi__int32;
707typedef struct
708{
709 _m3dstbi__uint32 img_x, img_y;
710 int img_n, img_out_n;
712 void *io_user_data;
714 int read_from_callbacks;
715 int buflen;
716 unsigned char buffer_start[128];
718 unsigned char *img_buffer, *img_buffer_end;
719 unsigned char *img_buffer_original, *img_buffer_original_end;
720} _m3dstbi__context;
722typedef struct
723{
724 int bits_per_channel;
725 int num_channels;
726 int channel_order;
727} _m3dstbi__result_info;
729#define STBI_ASSERT(v)
730#define STBI_NOTUSED(v) (void)sizeof(v)
731#define STBI__BYTECAST(x) ((unsigned char) ((x) & 255))
732#define STBI_MALLOC(sz) M3D_MALLOC(sz)
733#define STBI_REALLOC(p,newsz) M3D_REALLOC(p,newsz)
734#define STBI_FREE(p) M3D_FREE(p)
735#define STBI_REALLOC_SIZED(p,oldsz,newsz) STBI_REALLOC(p,newsz)
737_inline static unsigned char _m3dstbi__get8(_m3dstbi__context *s)
738{
739 if (s->img_buffer < s->img_buffer_end)
740 return *s->img_buffer++;
741 return 0;
742}
744_inline static int _m3dstbi__at_eof(_m3dstbi__context *s)
745{
746 return s->img_buffer >= s->img_buffer_end;
747}
749static void _m3dstbi__skip(_m3dstbi__context *s, int n)
750{
751 if (n < 0) {
752 s->img_buffer = s->img_buffer_end;
753 return;
754 }
755 s->img_buffer += n;
756}
758static int _m3dstbi__getn(_m3dstbi__context *s, unsigned char *buffer, int n)
759{
760 if (s->img_buffer+n <= s->img_buffer_end) {
761 memcpy(buffer, s->img_buffer, n);
762 s->img_buffer += n;
763 return 1;
764 } else
765 return 0;
766}
768static int _m3dstbi__get16be(_m3dstbi__context *s)
769{
770 int z = _m3dstbi__get8(s);
771 return (z << 8) + _m3dstbi__get8(s);
772}
774static _m3dstbi__uint32 _m3dstbi__get32be(_m3dstbi__context *s)
775{
776 _m3dstbi__uint32 z = _m3dstbi__get16be(s);
777 return (z << 16) + _m3dstbi__get16be(s);
778}
780#define _m3dstbi__err(x,y) _m3dstbi__errstr(y)
781static int _m3dstbi__errstr(const char *str)
782{
783 _m3dstbi__g_failure_reason = str;
784 return 0;
785}
787_inline static void *_m3dstbi__malloc(size_t size)
788{
789 return STBI_MALLOC(size);
790}
792static int _m3dstbi__addsizes_valid(int a, int b)
793{
794 if (b < 0) return 0;
795 return a <= 2147483647 - b;
796}
798static int _m3dstbi__mul2sizes_valid(int a, int b)
799{
800 if (a < 0 || b < 0) return 0;
801 if (b == 0) return 1;
802 return a <= 2147483647/b;
803}
805static int _m3dstbi__mad2sizes_valid(int a, int b, int add)
806{
807 return _m3dstbi__mul2sizes_valid(a, b) && _m3dstbi__addsizes_valid(a*b, add);
808}
810static int _m3dstbi__mad3sizes_valid(int a, int b, int c, int add)
811{
812 return _m3dstbi__mul2sizes_valid(a, b) && _m3dstbi__mul2sizes_valid(a*b, c) &&
813 _m3dstbi__addsizes_valid(a*b*c, add);
814}
816static void *_m3dstbi__malloc_mad2(int a, int b, int add)
817{
818 if (!_m3dstbi__mad2sizes_valid(a, b, add)) return NULL;
819 return _m3dstbi__malloc(a*b + add);
820}
822static void *_m3dstbi__malloc_mad3(int a, int b, int c, int add)
823{
824 if (!_m3dstbi__mad3sizes_valid(a, b, c, add)) return NULL;
825 return _m3dstbi__malloc(a*b*c + add);
826}
828static unsigned char _m3dstbi__compute_y(int r, int g, int b)
829{
830 return (unsigned char) (((r*77) + (g*150) + (29*b)) >> 8);
831}
833static unsigned char *_m3dstbi__convert_format(unsigned char *data, int img_n, int req_comp, unsigned int x, unsigned int y)
834{
835 int i,j;
836 unsigned char *good;
838 if (req_comp == img_n) return data;
839 STBI_ASSERT(req_comp >= 1 && req_comp <= 4);
841 good = (unsigned char *) _m3dstbi__malloc_mad3(req_comp, x, y, 0);
842 if (good == NULL) {
843 STBI_FREE(data);
844 _m3dstbi__err("outofmem", "Out of memory");
845 return NULL;
846 }
848 for (j=0; j < (int) y; ++j) {
849 unsigned char *src = data + j * x * img_n ;
850 unsigned char *dest = good + j * x * req_comp;
852 #define STBI__COMBO(a,b) ((a)*8+(b))
853 #define STBI__CASE(a,b) case STBI__COMBO(a,b): for(i=x-1; i >= 0; --i, src += a, dest += b)
854 switch (STBI__COMBO(img_n, req_comp)) {
855 STBI__CASE(1,2) { dest[0]=src[0], dest[1]=255; } break;
856 STBI__CASE(1,3) { dest[0]=dest[1]=dest[2]=src[0]; } break;
857 STBI__CASE(1,4) { dest[0]=dest[1]=dest[2]=src[0], dest[3]=255; } break;
858 STBI__CASE(2,1) { dest[0]=src[0]; } break;
859 STBI__CASE(2,3) { dest[0]=dest[1]=dest[2]=src[0]; } break;
860 STBI__CASE(2,4) { dest[0]=dest[1]=dest[2]=src[0], dest[3]=src[1]; } break;
861 STBI__CASE(3,4) { dest[0]=src[0],dest[1]=src[1],dest[2]=src[2],dest[3]=255; } break;
862 STBI__CASE(3,1) { dest[0]=_m3dstbi__compute_y(src[0],src[1],src[2]); } break;
863 STBI__CASE(3,2) { dest[0]=_m3dstbi__compute_y(src[0],src[1],src[2]), dest[1] = 255; } break;
864 STBI__CASE(4,1) { dest[0]=_m3dstbi__compute_y(src[0],src[1],src[2]); } break;
865 STBI__CASE(4,2) { dest[0]=_m3dstbi__compute_y(src[0],src[1],src[2]), dest[1] = src[3]; } break;
866 STBI__CASE(4,3) { dest[0]=src[0],dest[1]=src[1],dest[2]=src[2]; } break;
867 default: STBI_ASSERT(0);
868 }
869 #undef STBI__CASE
870 }
872 STBI_FREE(data);
873 return good;
874}
876static _m3dstbi__uint16 _m3dstbi__compute_y_16(int r, int g, int b)
877{
878 return (_m3dstbi__uint16) (((r*77) + (g*150) + (29*b)) >> 8);
879}
881static _m3dstbi__uint16 *_m3dstbi__convert_format16(_m3dstbi__uint16 *data, int img_n, int req_comp, unsigned int x, unsigned int y)
882{
883 int i,j;
884 _m3dstbi__uint16 *good;
886 if (req_comp == img_n) return data;
887 STBI_ASSERT(req_comp >= 1 && req_comp <= 4);
889 good = (_m3dstbi__uint16 *) _m3dstbi__malloc(req_comp * x * y * 2);
890 if (good == NULL) {
891 STBI_FREE(data);
892 _m3dstbi__err("outofmem", "Out of memory");
893 return NULL;
894 }
896 for (j=0; j < (int) y; ++j) {
897 _m3dstbi__uint16 *src = data + j * x * img_n ;
898 _m3dstbi__uint16 *dest = good + j * x * req_comp;
900 #define STBI__COMBO(a,b) ((a)*8+(b))
901 #define STBI__CASE(a,b) case STBI__COMBO(a,b): for(i=x-1; i >= 0; --i, src += a, dest += b)
902 switch (STBI__COMBO(img_n, req_comp)) {
903 STBI__CASE(1,2) { dest[0]=src[0], dest[1]=0xffff; } break;
904 STBI__CASE(1,3) { dest[0]=dest[1]=dest[2]=src[0]; } break;
905 STBI__CASE(1,4) { dest[0]=dest[1]=dest[2]=src[0], dest[3]=0xffff; } break;
906 STBI__CASE(2,1) { dest[0]=src[0]; } break;
907 STBI__CASE(2,3) { dest[0]=dest[1]=dest[2]=src[0]; } break;
908 STBI__CASE(2,4) { dest[0]=dest[1]=dest[2]=src[0], dest[3]=src[1]; } break;
909 STBI__CASE(3,4) { dest[0]=src[0],dest[1]=src[1],dest[2]=src[2],dest[3]=0xffff; } break;
910 STBI__CASE(3,1) { dest[0]=_m3dstbi__compute_y_16(src[0],src[1],src[2]); } break;
911 STBI__CASE(3,2) { dest[0]=_m3dstbi__compute_y_16(src[0],src[1],src[2]), dest[1] = 0xffff; } break;
912 STBI__CASE(4,1) { dest[0]=_m3dstbi__compute_y_16(src[0],src[1],src[2]); } break;
913 STBI__CASE(4,2) { dest[0]=_m3dstbi__compute_y_16(src[0],src[1],src[2]), dest[1] = src[3]; } break;
914 STBI__CASE(4,3) { dest[0]=src[0],dest[1]=src[1],dest[2]=src[2]; } break;
915 default: STBI_ASSERT(0);
916 }
917 #undef STBI__CASE
918 }
920 STBI_FREE(data);
921 return good;
922}
924#define STBI__ZFAST_BITS 9
925#define STBI__ZFAST_MASK ((1 << STBI__ZFAST_BITS) - 1)
927typedef struct
928{
929 _m3dstbi__uint16 fast[1 << STBI__ZFAST_BITS];
930 _m3dstbi__uint16 firstcode[16];
931 int maxcode[17];
932 _m3dstbi__uint16 firstsymbol[16];
933 unsigned char size[288];
934 _m3dstbi__uint16 value[288];
935} _m3dstbi__zhuffman;
937_inline static int _m3dstbi__bitreverse16(int n)
938{
939 n = ((n & 0xAAAA) >> 1) | ((n & 0x5555) << 1);
940 n = ((n & 0xCCCC) >> 2) | ((n & 0x3333) << 2);
941 n = ((n & 0xF0F0) >> 4) | ((n & 0x0F0F) << 4);
942 n = ((n & 0xFF00) >> 8) | ((n & 0x00FF) << 8);
943 return n;
944}
946_inline static int _m3dstbi__bit_reverse(int v, int bits)
947{
948 STBI_ASSERT(bits <= 16);
949 return _m3dstbi__bitreverse16(v) >> (16-bits);
950}
952static int _m3dstbi__zbuild_huffman(_m3dstbi__zhuffman *z, unsigned char *sizelist, int num)
953{
954 int i,k=0;
955 int code, next_code[16], sizes[17];
957 memset(sizes, 0, sizeof(sizes));
958 memset(z->fast, 0, sizeof(z->fast));
959 for (i=0; i < num; ++i)
960 ++sizes[sizelist[i]];
961 sizes[0] = 0;
962 for (i=1; i < 16; ++i)
963 if (sizes[i] > (1 << i))
964 return _m3dstbi__err("bad sizes", "Corrupt PNG");
965 code = 0;
966 for (i=1; i < 16; ++i) {
967 next_code[i] = code;
968 z->firstcode[i] = (_m3dstbi__uint16) code;
969 z->firstsymbol[i] = (_m3dstbi__uint16) k;
970 code = (code + sizes[i]);
971 if (sizes[i])
972 if (code-1 >= (1 << i)) return _m3dstbi__err("bad codelengths","Corrupt PNG");
973 z->maxcode[i] = code << (16-i);
974 code <<= 1;
975 k += sizes[i];
976 }
977 z->maxcode[16] = 0x10000;
978 for (i=0; i < num; ++i) {
979 int s = sizelist[i];
980 if (s) {
981 int c = next_code[s] - z->firstcode[s] + z->firstsymbol[s];
982 _m3dstbi__uint16 fastv = (_m3dstbi__uint16) ((s << 9) | i);
983 z->size [c] = (unsigned char ) s;
984 z->value[c] = (_m3dstbi__uint16) i;
985 if (s <= STBI__ZFAST_BITS) {
986 int j = _m3dstbi__bit_reverse(next_code[s],s);
987 while (j < (1 << STBI__ZFAST_BITS)) {
988 z->fast[j] = fastv;
989 j += (1 << s);
990 }
991 }
992 ++next_code[s];
993 }
994 }
995 return 1;
996}
998typedef struct
999{
1000 unsigned char *zbuffer, *zbuffer_end;
1001 int num_bits;
1002 _m3dstbi__uint32 code_buffer;
1004 char *zout;
1005 char *zout_start;
1006 char *zout_end;
1007 int z_expandable;
1009 _m3dstbi__zhuffman z_length, z_distance;
1010} _m3dstbi__zbuf;
1012_inline static unsigned char _m3dstbi__zget8(_m3dstbi__zbuf *z)
1013{
1014 if (z->zbuffer >= z->zbuffer_end) return 0;
1015 return *z->zbuffer++;
1016}
1018static void _m3dstbi__fill_bits(_m3dstbi__zbuf *z)
1019{
1020 do {
1021 STBI_ASSERT(z->code_buffer < (1U << z->num_bits));
1022 z->code_buffer |= (unsigned int) _m3dstbi__zget8(z) << z->num_bits;
1023 z->num_bits += 8;
1024 } while (z->num_bits <= 24);
1025}
1027_inline static unsigned int _m3dstbi__zreceive(_m3dstbi__zbuf *z, int n)
1028{
1029 unsigned int k;
1030 if (z->num_bits < n) _m3dstbi__fill_bits(z);
1031 k = z->code_buffer & ((1 << n) - 1);
1032 z->code_buffer >>= n;
1033 z->num_bits -= n;
1034 return k;
1035}
1037static int _m3dstbi__zhuffman_decode_slowpath(_m3dstbi__zbuf *a, _m3dstbi__zhuffman *z)
1038{
1039 int b,s,k;
1040 k = _m3dstbi__bit_reverse(a->code_buffer, 16);
1041 for (s=STBI__ZFAST_BITS+1; ; ++s)
1042 if (k < z->maxcode[s])
1043 break;
1044 if (s == 16) return -1;
1045 b = (k >> (16-s)) - z->firstcode[s] + z->firstsymbol[s];
1046 STBI_ASSERT(z->size[b] == s);
1047 a->code_buffer >>= s;
1048 a->num_bits -= s;
1049 return z->value[b];
1050}
1052_inline static int _m3dstbi__zhuffman_decode(_m3dstbi__zbuf *a, _m3dstbi__zhuffman *z)
1053{
1054 int b,s;
1055 if (a->num_bits < 16) _m3dstbi__fill_bits(a);
1056 b = z->fast[a->code_buffer & STBI__ZFAST_MASK];
1057 if (b) {
1058 s = b >> 9;
1059 a->code_buffer >>= s;
1060 a->num_bits -= s;
1061 return b & 511;
1062 }
1063 return _m3dstbi__zhuffman_decode_slowpath(a, z);
1064}
1066static int _m3dstbi__zexpand(_m3dstbi__zbuf *z, char *zout, int n)
1067{
1068 char *q;
1069 int cur, limit, old_limit;
1070 z->zout = zout;
1071 if (!z->z_expandable) return _m3dstbi__err("output buffer limit","Corrupt PNG");
1072 cur = (int) (z->zout - z->zout_start);
1073 limit = old_limit = (int) (z->zout_end - z->zout_start);
1074 while (cur + n > limit)
1075 limit *= 2;
1076 q = (char *) STBI_REALLOC_SIZED(z->zout_start, old_limit, limit);
1077 STBI_NOTUSED(old_limit);
1078 if (q == NULL) return _m3dstbi__err("outofmem", "Out of memory");
1079 z->zout_start = q;
1080 z->zout = q + cur;
1081 z->zout_end = q + limit;
1082 return 1;
1083}
1085static int _m3dstbi__zlength_base[31] = {
1086 3,4,5,6,7,8,9,10,11,13,
1087 15,17,19,23,27,31,35,43,51,59,
1088 67,83,99,115,131,163,195,227,258,0,0 };
1090static int _m3dstbi__zlength_extra[31]=
1091{ 0,0,0,0,0,0,0,0,1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,4,5,5,5,5,0,0,0 };
1093static int _m3dstbi__zdist_base[32] = { 1,2,3,4,5,7,9,13,17,25,33,49,65,97,129,193,
1094257,385,513,769,1025,1537,2049,3073,4097,6145,8193,12289,16385,24577,0,0};
1096static int _m3dstbi__zdist_extra[32] =
1097{ 0,0,0,0,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13};
1099static int _m3dstbi__parse_huffman_block(_m3dstbi__zbuf *a)
1100{
1101 char *zout = a->zout;
1102 for(;;) {
1103 int z = _m3dstbi__zhuffman_decode(a, &a->z_length);
1104 if (z < 256) {
1105 if (z < 0) return _m3dstbi__err("bad huffman code","Corrupt PNG");
1106 if (zout >= a->zout_end) {
1107 if (!_m3dstbi__zexpand(a, zout, 1)) return 0;
1108 zout = a->zout;
1109 }
1110 *zout++ = (char) z;
1111 } else {
1112 unsigned char *p;
1113 int len,dist;
1114 if (z == 256) {
1115 a->zout = zout;
1116 return 1;
1117 }
1118 z -= 257;
1119 len = _m3dstbi__zlength_base[z];
1120 if (_m3dstbi__zlength_extra[z]) len += _m3dstbi__zreceive(a, _m3dstbi__zlength_extra[z]);
1121 z = _m3dstbi__zhuffman_decode(a, &a->z_distance);
1122 if (z < 0) return _m3dstbi__err("bad huffman code","Corrupt PNG");
1123 dist = _m3dstbi__zdist_base[z];
1124 if (_m3dstbi__zdist_extra[z]) dist += _m3dstbi__zreceive(a, _m3dstbi__zdist_extra[z]);
1125 if (zout - a->zout_start < dist) return _m3dstbi__err("bad dist","Corrupt PNG");
1126 if (zout + len > a->zout_end) {
1127 if (!_m3dstbi__zexpand(a, zout, len)) return 0;
1128 zout = a->zout;
1129 }
1130 p = (unsigned char *) (zout - dist);
1131 if (dist == 1) {
1132 unsigned char v = *p;
1133 if (len) { do *zout++ = v; while (--len); }
1134 } else {
1135 if (len) { do *zout++ = *p++; while (--len); }
1136 }
1137 }
1138 }
1139}
1141static int _m3dstbi__compute_huffman_codes(_m3dstbi__zbuf *a)
1142{
1143 static unsigned char length_dezigzag[19] = { 16,17,18,0,8,7,9,6,10,5,11,4,12,3,13,2,14,1,15 };
1144 _m3dstbi__zhuffman z_codelength;
1145 unsigned char lencodes[286+32+137];
1146 unsigned char codelength_sizes[19];
1147 int i,n;
1149 int hlit = _m3dstbi__zreceive(a,5) + 257;
1150 int hdist = _m3dstbi__zreceive(a,5) + 1;
1151 int hclen = _m3dstbi__zreceive(a,4) + 4;
1152 int ntot = hlit + hdist;
1154 memset(codelength_sizes, 0, sizeof(codelength_sizes));
1155 for (i=0; i < hclen; ++i) {
1156 int s = _m3dstbi__zreceive(a,3);
1157 codelength_sizes[length_dezigzag[i]] = (unsigned char) s;
1158 }
1159 if (!_m3dstbi__zbuild_huffman(&z_codelength, codelength_sizes, 19)) return 0;
1161 n = 0;
1162 while (n < ntot) {
1163 int c = _m3dstbi__zhuffman_decode(a, &z_codelength);
1164 if (c < 0 || c >= 19) return _m3dstbi__err("bad codelengths", "Corrupt PNG");
1165 if (c < 16)
1166 lencodes[n++] = (unsigned char) c;
1167 else {
1168 unsigned char fill = 0;
1169 if (c == 16) {
1170 c = _m3dstbi__zreceive(a,2)+3;
1171 if (n == 0) return _m3dstbi__err("bad codelengths", "Corrupt PNG");
1172 fill = lencodes[n-1];
1173 } else if (c == 17)
1174 c = _m3dstbi__zreceive(a,3)+3;
1175 else {
1176 STBI_ASSERT(c == 18);
1177 c = _m3dstbi__zreceive(a,7)+11;
1178 }
1179 if (ntot - n < c) return _m3dstbi__err("bad codelengths", "Corrupt PNG");
1180 memset(lencodes+n, fill, c);
1181 n += c;
1182 }
1183 }
1184 if (n != ntot) return _m3dstbi__err("bad codelengths","Corrupt PNG");
1185 if (!_m3dstbi__zbuild_huffman(&a->z_length, lencodes, hlit)) return 0;
1186 if (!_m3dstbi__zbuild_huffman(&a->z_distance, lencodes+hlit, hdist)) return 0;
1187 return 1;
1188}
1190_inline static int _m3dstbi__parse_uncompressed_block(_m3dstbi__zbuf *a)
1191{
1192 unsigned char header[4];
1193 int len,nlen,k;
1194 if (a->num_bits & 7)
1195 _m3dstbi__zreceive(a, a->num_bits & 7);
1196 k = 0;
1197 while (a->num_bits > 0) {
1198 header[k++] = (unsigned char) (a->code_buffer & 255);
1199 a->code_buffer >>= 8;
1200 a->num_bits -= 8;
1201 }
1202 STBI_ASSERT(a->num_bits == 0);
1203 while (k < 4)
1204 header[k++] = _m3dstbi__zget8(a);
1205 len = header[1] * 256 + header[0];
1206 nlen = header[3] * 256 + header[2];
1207 if (nlen != (len ^ 0xffff)) return _m3dstbi__err("zlib corrupt","Corrupt PNG");
1208 if (a->zbuffer + len > a->zbuffer_end) return _m3dstbi__err("read past buffer","Corrupt PNG");
1209 if (a->zout + len > a->zout_end)
1210 if (!_m3dstbi__zexpand(a, a->zout, len)) return 0;
1211 memcpy(a->zout, a->zbuffer, len);
1212 a->zbuffer += len;
1213 a->zout += len;
1214 return 1;
1215}
1217static int _m3dstbi__parse_zlib_header(_m3dstbi__zbuf *a)
1218{
1219 int cmf = _m3dstbi__zget8(a);
1220 int cm = cmf & 15;
1221 /* int cinfo = cmf >> 4; */
1222 int flg = _m3dstbi__zget8(a);
1223 if ((cmf*256+flg) % 31 != 0) return _m3dstbi__err("bad zlib header","Corrupt PNG");
1224 if (flg & 32) return _m3dstbi__err("no preset dict","Corrupt PNG");
1225 if (cm != 8) return _m3dstbi__err("bad compression","Corrupt PNG");
1226 return 1;
1227}
1229static unsigned char _m3dstbi__zdefault_length[288], _m3dstbi__zdefault_distance[32];
1230static void _m3dstbi__init_zdefaults(void)
1231{
1232 int i;
1233 for (i=0; i <= 143; ++i) _m3dstbi__zdefault_length[i] = 8;
1234 for ( ; i <= 255; ++i) _m3dstbi__zdefault_length[i] = 9;
1235 for ( ; i <= 279; ++i) _m3dstbi__zdefault_length[i] = 7;
1236 for ( ; i <= 287; ++i) _m3dstbi__zdefault_length[i] = 8;
1238 for (i=0; i <= 31; ++i) _m3dstbi__zdefault_distance[i] = 5;
1239}
1241static int _m3dstbi__parse_zlib(_m3dstbi__zbuf *a, int parse_header)
1242{
1243 int final, type;
1244 if (parse_header)
1245 if (!_m3dstbi__parse_zlib_header(a)) return 0;
1246 a->num_bits = 0;
1247 a->code_buffer = 0;
1248 do {
1249 final = _m3dstbi__zreceive(a,1);
1250 type = _m3dstbi__zreceive(a,2);
1251 if (type == 0) {
1252 if (!_m3dstbi__parse_uncompressed_block(a)) return 0;
1253 } else if (type == 3) {
1254 return 0;
1255 } else {
1256 if (type == 1) {
1257 if (!_m3dstbi__zbuild_huffman(&a->z_length , _m3dstbi__zdefault_length , 288)) return 0;
1258 if (!_m3dstbi__zbuild_huffman(&a->z_distance, _m3dstbi__zdefault_distance, 32)) return 0;
1259 } else {
1260 if (!_m3dstbi__compute_huffman_codes(a)) return 0;
1261 }
1262 if (!_m3dstbi__parse_huffman_block(a)) return 0;
1263 }
1264 } while (!final);
1265 return 1;
1266}
1268static int _m3dstbi__do_zlib(_m3dstbi__zbuf *a, char *obuf, int olen, int exp, int parse_header)
1269{
1270 a->zout_start = obuf;
1271 a->zout = obuf;
1272 a->zout_end = obuf + olen;
1273 a->z_expandable = exp;
1274 _m3dstbi__init_zdefaults();
1275 return _m3dstbi__parse_zlib(a, parse_header);
1276}
1278char *_m3dstbi_zlib_decode_malloc_guesssize_headerflag(const char *buffer, int len, int initial_size, int *outlen, int parse_header)
1279{
1280 _m3dstbi__zbuf a;
1281 char *p = (char *) _m3dstbi__malloc(initial_size);
1282 if (p == NULL) return NULL;
1283 a.zbuffer = (unsigned char *) buffer;
1284 a.zbuffer_end = (unsigned char *) buffer + len;
1285 if (_m3dstbi__do_zlib(&a, p, initial_size, 1, parse_header)) {
1286 if (outlen) *outlen = (int) (a.zout - a.zout_start);
1287 return a.zout_start;
1288 } else {
1289 STBI_FREE(a.zout_start);
1290 return NULL;
1291 }
1292}
1294typedef struct
1295{
1296 _m3dstbi__uint32 length;
1297 _m3dstbi__uint32 type;
1298} _m3dstbi__pngchunk;
1300static _m3dstbi__pngchunk _m3dstbi__get_chunk_header(_m3dstbi__context *s)
1301{
1302 _m3dstbi__pngchunk c;
1303 c.length = _m3dstbi__get32be(s);
1304 c.type = _m3dstbi__get32be(s);
1305 return c;
1306}
1308_inline static int _m3dstbi__check_png_header(_m3dstbi__context *s)
1309{
1310 static unsigned char png_sig[8] = { 137,80,78,71,13,10,26,10 };
1311 int i;
1312 for (i=0; i < 8; ++i)
1313 if (_m3dstbi__get8(s) != png_sig[i]) return _m3dstbi__err("bad png sig","Not a PNG");
1314 return 1;
1315}
1317typedef struct
1318{
1319 _m3dstbi__context *s;
1320 unsigned char *idata, *expanded, *out;
1321 int depth;
1322} _m3dstbi__png;
1325enum {
1326 STBI__F_none=0,
1327 STBI__F_sub=1,
1328 STBI__F_up=2,
1329 STBI__F_avg=3,
1330 STBI__F_paeth=4,
1331 STBI__F_avg_first,
1332 STBI__F_paeth_first
1333};
1335static unsigned char first_row_filter[5] =
1336{
1337 STBI__F_none,
1338 STBI__F_sub,
1339 STBI__F_none,
1340 STBI__F_avg_first,
1341 STBI__F_paeth_first
1342};
1344static int _m3dstbi__paeth(int a, int b, int c)
1345{
1346 int p = a + b - c;
1347 int pa = abs(p-a);
1348 int pb = abs(p-b);
1349 int pc = abs(p-c);
1350 if (pa <= pb && pa <= pc) return a;
1351 if (pb <= pc) return b;
1352 return c;
1353}
1355static unsigned char _m3dstbi__depth_scale_table[9] = { 0, 0xff, 0x55, 0, 0x11, 0,0,0, 0x01 };
1357static int _m3dstbi__create_png_image_raw(_m3dstbi__png *a, unsigned char *raw, _m3dstbi__uint32 raw_len, int out_n, _m3dstbi__uint32 x, _m3dstbi__uint32 y, int depth, int color)
1358{
1359 int bytes = (depth == 16? 2 : 1);
1360 _m3dstbi__context *s = a->s;
1361 _m3dstbi__uint32 i,j,stride = x*out_n*bytes;
1362 _m3dstbi__uint32 img_len, img_width_bytes;
1363 int k;
1364 int img_n = s->img_n;
1366 int output_bytes = out_n*bytes;
1367 int filter_bytes = img_n*bytes;
1368 int width = x;
1370 STBI_ASSERT(out_n == s->img_n || out_n == s->img_n+1);
1371 a->out = (unsigned char *) _m3dstbi__malloc_mad3(x, y, output_bytes, 0);
1372 if (!a->out) return _m3dstbi__err("outofmem", "Out of memory");
1374 if (!_m3dstbi__mad3sizes_valid(img_n, x, depth, 7)) return _m3dstbi__err("too large", "Corrupt PNG");
1375 img_width_bytes = (((img_n * x * depth) + 7) >> 3);
1376 img_len = (img_width_bytes + 1) * y;
1377 if (s->img_x == x && s->img_y == y) {
1378 if (raw_len != img_len) return _m3dstbi__err("not enough pixels","Corrupt PNG");
1379 } else {
1380 if (raw_len < img_len) return _m3dstbi__err("not enough pixels","Corrupt PNG");
1381 }
1383 for (j=0; j < y; ++j) {
1384 unsigned char *cur = a->out + stride*j;
1385 unsigned char *prior = cur - stride;
1386 int filter = *raw++;
1388 if (filter > 4)
1389 return _m3dstbi__err("invalid filter","Corrupt PNG");
1391 if (depth < 8) {
1392 STBI_ASSERT(img_width_bytes <= x);
1393 cur += x*out_n - img_width_bytes;
1394 filter_bytes = 1;
1395 width = img_width_bytes;
1396 }
1397 prior = cur - stride;
1399 if (j == 0) filter = first_row_filter[filter];
1401 for (k=0; k < filter_bytes; ++k) {
1402 switch (filter) {
1403 case STBI__F_none : cur[k] = raw[k]; break;
1404 case STBI__F_sub : cur[k] = raw[k]; break;
1405 case STBI__F_up : cur[k] = STBI__BYTECAST(raw[k] + prior[k]); break;
1406 case STBI__F_avg : cur[k] = STBI__BYTECAST(raw[k] + (prior[k]>>1)); break;
1407 case STBI__F_paeth : cur[k] = STBI__BYTECAST(raw[k] + _m3dstbi__paeth(0,prior[k],0)); break;
1408 case STBI__F_avg_first : cur[k] = raw[k]; break;
1409 case STBI__F_paeth_first: cur[k] = raw[k]; break;
1410 }
1411 }
1413 if (depth == 8) {
1414 if (img_n != out_n)
1415 cur[img_n] = 255;
1416 raw += img_n;
1417 cur += out_n;
1418 prior += out_n;
1419 } else if (depth == 16) {
1420 if (img_n != out_n) {
1421 cur[filter_bytes] = 255;
1422 cur[filter_bytes+1] = 255;
1423 }
1424 raw += filter_bytes;
1425 cur += output_bytes;
1426 prior += output_bytes;
1427 } else {
1428 raw += 1;
1429 cur += 1;
1430 prior += 1;
1431 }
1433 if (depth < 8 || img_n == out_n) {
1434 int nk = (width - 1)*filter_bytes;
1435 #define STBI__CASE(f) \
1436 case f: \
1437 for (k=0; k < nk; ++k)
1438 switch (filter) {
1439 case STBI__F_none: memcpy(cur, raw, nk); break;
1440 STBI__CASE(STBI__F_sub) { cur[k] = STBI__BYTECAST(raw[k] + cur[k-filter_bytes]); } break;
1441 STBI__CASE(STBI__F_up) { cur[k] = STBI__BYTECAST(raw[k] + prior[k]); } break;
1442 STBI__CASE(STBI__F_avg) { cur[k] = STBI__BYTECAST(raw[k] + ((prior[k] + cur[k-filter_bytes])>>1)); } break;
1443 STBI__CASE(STBI__F_paeth) { cur[k] = STBI__BYTECAST(raw[k] + _m3dstbi__paeth(cur[k-filter_bytes],prior[k],prior[k-filter_bytes])); } break;
1444 STBI__CASE(STBI__F_avg_first) { cur[k] = STBI__BYTECAST(raw[k] + (cur[k-filter_bytes] >> 1)); } break;
1445 STBI__CASE(STBI__F_paeth_first) { cur[k] = STBI__BYTECAST(raw[k] + _m3dstbi__paeth(cur[k-filter_bytes],0,0)); } break;
1446 }
1447 #undef STBI__CASE
1448 raw += nk;
1449 } else {
1450 STBI_ASSERT(img_n+1 == out_n);
1451 #define STBI__CASE(f) \
1452 case f: \
1453 for (i=x-1; i >= 1; --i, cur[filter_bytes]=255,raw+=filter_bytes,cur+=output_bytes,prior+=output_bytes) \
1454 for (k=0; k < filter_bytes; ++k)
1455 switch (filter) {
1456 STBI__CASE(STBI__F_none) { cur[k] = raw[k]; } break;
1457 STBI__CASE(STBI__F_sub) { cur[k] = STBI__BYTECAST(raw[k] + cur[k- output_bytes]); } break;
1458 STBI__CASE(STBI__F_up) { cur[k] = STBI__BYTECAST(raw[k] + prior[k]); } break;
1459 STBI__CASE(STBI__F_avg) { cur[k] = STBI__BYTECAST(raw[k] + ((prior[k] + cur[k- output_bytes])>>1)); } break;
1460 STBI__CASE(STBI__F_paeth) { cur[k] = STBI__BYTECAST(raw[k] + _m3dstbi__paeth(cur[k- output_bytes],prior[k],prior[k- output_bytes])); } break;
1461 STBI__CASE(STBI__F_avg_first) { cur[k] = STBI__BYTECAST(raw[k] + (cur[k- output_bytes] >> 1)); } break;
1462 STBI__CASE(STBI__F_paeth_first) { cur[k] = STBI__BYTECAST(raw[k] + _m3dstbi__paeth(cur[k- output_bytes],0,0)); } break;
1463 }
1464 #undef STBI__CASE
1466 if (depth == 16) {
1467 cur = a->out + stride*j;
1468 for (i=0; i < x; ++i,cur+=output_bytes) {
1469 cur[filter_bytes+1] = 255;
1470 }
1471 }
1472 }
1473 }
1475 if (depth < 8) {
1476 for (j=0; j < y; ++j) {
1477 unsigned char *cur = a->out + stride*j;
1478 unsigned char *in = a->out + stride*j + x*out_n - img_width_bytes;
1479 unsigned char scale = (color == 0) ? _m3dstbi__depth_scale_table[depth] : 1;
1481 if (depth == 4) {
1482 for (k=x*img_n; k >= 2; k-=2, ++in) {
1483 *cur++ = scale * ((*in >> 4) );
1484 *cur++ = scale * ((*in ) & 0x0f);
1485 }
1486 if (k > 0) *cur++ = scale * ((*in >> 4) );
1487 } else if (depth == 2) {
1488 for (k=x*img_n; k >= 4; k-=4, ++in) {
1489 *cur++ = scale * ((*in >> 6) );
1490 *cur++ = scale * ((*in >> 4) & 0x03);
1491 *cur++ = scale * ((*in >> 2) & 0x03);
1492 *cur++ = scale * ((*in ) & 0x03);
1493 }
1494 if (k > 0) *cur++ = scale * ((*in >> 6) );
1495 if (k > 1) *cur++ = scale * ((*in >> 4) & 0x03);
1496 if (k > 2) *cur++ = scale * ((*in >> 2) & 0x03);
1497 } else if (depth == 1) {
1498 for (k=x*img_n; k >= 8; k-=8, ++in) {
1499 *cur++ = scale * ((*in >> 7) );
1500 *cur++ = scale * ((*in >> 6) & 0x01);
1501 *cur++ = scale * ((*in >> 5) & 0x01);
1502 *cur++ = scale * ((*in >> 4) & 0x01);
1503 *cur++ = scale * ((*in >> 3) & 0x01);
1504 *cur++ = scale * ((*in >> 2) & 0x01);
1505 *cur++ = scale * ((*in >> 1) & 0x01);
1506 *cur++ = scale * ((*in ) & 0x01);
1507 }
1508 if (k > 0) *cur++ = scale * ((*in >> 7) );
1509 if (k > 1) *cur++ = scale * ((*in >> 6) & 0x01);
1510 if (k > 2) *cur++ = scale * ((*in >> 5) & 0x01);
1511 if (k > 3) *cur++ = scale * ((*in >> 4) & 0x01);
1512 if (k > 4) *cur++ = scale * ((*in >> 3) & 0x01);
1513 if (k > 5) *cur++ = scale * ((*in >> 2) & 0x01);
1514 if (k > 6) *cur++ = scale * ((*in >> 1) & 0x01);
1515 }
1516 if (img_n != out_n) {
1517 int q;
1518 cur = a->out + stride*j;
1519 if (img_n == 1) {
1520 for (q=x-1; q >= 0; --q) {
1521 cur[q*2+1] = 255;
1522 cur[q*2+0] = cur[q];
1523 }
1524 } else {
1525 STBI_ASSERT(img_n == 3);
1526 for (q=x-1; q >= 0; --q) {
1527 cur[q*4+3] = 255;
1528 cur[q*4+2] = cur[q*3+2];
1529 cur[q*4+1] = cur[q*3+1];
1530 cur[q*4+0] = cur[q*3+0];
1531 }
1532 }
1533 }
1534 }
1535 } else if (depth == 16) {
1536 unsigned char *cur = a->out;
1537 _m3dstbi__uint16 *cur16 = (_m3dstbi__uint16*)cur;
1539 for(i=0; i < x*y*out_n; ++i,cur16++,cur+=2) {
1540 *cur16 = (cur[0] << 8) | cur[1];
1541 }
1542 }
1544 return 1;
1545}
1547static int _m3dstbi__create_png_image(_m3dstbi__png *a, unsigned char *image_data, _m3dstbi__uint32 image_data_len, int out_n, int depth, int color, int interlaced)
1548{
1549 int bytes = (depth == 16 ? 2 : 1);
1550 int out_bytes = out_n * bytes;
1551 unsigned char *final;
1552 int p;
1553 if (!interlaced)
1554 return _m3dstbi__create_png_image_raw(a, image_data, image_data_len, out_n, a->s->img_x, a->s->img_y, depth, color);
1556 final = (unsigned char *) _m3dstbi__malloc_mad3(a->s->img_x, a->s->img_y, out_bytes, 0);
1557 for (p=0; p < 7; ++p) {
1558 int xorig[] = { 0,4,0,2,0,1,0 };
1559 int yorig[] = { 0,0,4,0,2,0,1 };
1560 int xspc[] = { 8,8,4,4,2,2,1 };
1561 int yspc[] = { 8,8,8,4,4,2,2 };
1562 int i,j,x,y;
1563 x = (a->s->img_x - xorig[p] + xspc[p]-1) / xspc[p];
1564 y = (a->s->img_y - yorig[p] + yspc[p]-1) / yspc[p];
1565 if (x && y) {
1566 _m3dstbi__uint32 img_len = ((((a->s->img_n * x * depth) + 7) >> 3) + 1) * y;
1567 if (!_m3dstbi__create_png_image_raw(a, image_data, image_data_len, out_n, x, y, depth, color)) {
1568 STBI_FREE(final);
1569 return 0;
1570 }
1571 for (j=0; j < y; ++j) {
1572 for (i=0; i < x; ++i) {
1573 int out_y = j*yspc[p]+yorig[p];
1574 int out_x = i*xspc[p]+xorig[p];
1575 memcpy(final + out_y*a->s->img_x*out_bytes + out_x*out_bytes,
1576 a->out + (j*x+i)*out_bytes, out_bytes);
1577 }
1578 }
1579 STBI_FREE(a->out);
1580 image_data += img_len;
1581 image_data_len -= img_len;
1582 }
1583 }
1584 a->out = final;
1586 return 1;
1587}
1589static int _m3dstbi__compute_transparency(_m3dstbi__png *z, unsigned char tc[3], int out_n)
1590{
1591 _m3dstbi__context *s = z->s;
1592 _m3dstbi__uint32 i, pixel_count = s->img_x * s->img_y;
1593 unsigned char *p = z->out;
1595 STBI_ASSERT(out_n == 2 || out_n == 4);
1597 if (out_n == 2) {
1598 for (i=0; i < pixel_count; ++i) {
1599 p[1] = (p[0] == tc[0] ? 0 : 255);
1600 p += 2;
1601 }
1602 } else {
1603 for (i=0; i < pixel_count; ++i) {
1604 if (p[0] == tc[0] && p[1] == tc[1] && p[2] == tc[2])
1605 p[3] = 0;
1606 p += 4;
1607 }
1608 }
1609 return 1;
1610}
1612static int _m3dstbi__compute_transparency16(_m3dstbi__png *z, _m3dstbi__uint16 tc[3], int out_n)
1613{
1614 _m3dstbi__context *s = z->s;
1615 _m3dstbi__uint32 i, pixel_count = s->img_x * s->img_y;
1616 _m3dstbi__uint16 *p = (_m3dstbi__uint16*) z->out;
1618 STBI_ASSERT(out_n == 2 || out_n == 4);
1620 if (out_n == 2) {
1621 for (i = 0; i < pixel_count; ++i) {
1622 p[1] = (p[0] == tc[0] ? 0 : 65535);
1623 p += 2;
1624 }
1625 } else {
1626 for (i = 0; i < pixel_count; ++i) {
1627 if (p[0] == tc[0] && p[1] == tc[1] && p[2] == tc[2])
1628 p[3] = 0;
1629 p += 4;
1630 }
1631 }
1632 return 1;
1633}
1635static int _m3dstbi__expand_png_palette(_m3dstbi__png *a, unsigned char *palette, int len, int pal_img_n)
1636{
1637 _m3dstbi__uint32 i, pixel_count = a->s->img_x * a->s->img_y;
1638 unsigned char *p, *temp_out, *orig = a->out;
1640 p = (unsigned char *) _m3dstbi__malloc_mad2(pixel_count, pal_img_n, 0);
1641 if (p == NULL) return _m3dstbi__err("outofmem", "Out of memory");
1643 temp_out = p;
1645 if (pal_img_n == 3) {
1646 for (i=0; i < pixel_count; ++i) {
1647 int n = orig[i]*4;
1648 p[0] = palette[n ];
1649 p[1] = palette[n+1];
1650 p[2] = palette[n+2];
1651 p += 3;
1652 }
1653 } else {
1654 for (i=0; i < pixel_count; ++i) {
1655 int n = orig[i]*4;
1656 p[0] = palette[n ];
1657 p[1] = palette[n+1];
1658 p[2] = palette[n+2];
1659 p[3] = palette[n+3];
1660 p += 4;
1661 }
1662 }
1663 STBI_FREE(a->out);
1664 a->out = temp_out;
1666 STBI_NOTUSED(len);
1668 return 1;
1669}
1671#define STBI__PNG_TYPE(a,b,c,d) (((unsigned) (a) << 24) + ((unsigned) (b) << 16) + ((unsigned) (c) << 8) + (unsigned) (d))
1673static int _m3dstbi__parse_png_file(_m3dstbi__png *z, int scan, int req_comp)
1674{
1675 unsigned char palette[1024], pal_img_n=0;
1676 unsigned char has_trans=0, tc[3];
1677 _m3dstbi__uint16 tc16[3];
1678 _m3dstbi__uint32 ioff=0, idata_limit=0, i, pal_len=0;
1679 int first=1,k,interlace=0, color=0;
1680 _m3dstbi__context *s = z->s;
1682 z->expanded = NULL;
1683 z->idata = NULL;
1684 z->out = NULL;
1686 if (!_m3dstbi__check_png_header(s)) return 0;
1688 if (scan == STBI__SCAN_type) return 1;
1690 for (;;) {
1691 _m3dstbi__pngchunk c = _m3dstbi__get_chunk_header(s);
1692 switch (c.type) {
1693 case STBI__PNG_TYPE('C','g','B','I'):
1694 _m3dstbi__skip(s, c.length);
1695 break;
1696 case STBI__PNG_TYPE('I','H','D','R'): {
1697 int comp,filter;
1698 if (!first) return _m3dstbi__err("multiple IHDR","Corrupt PNG");
1699 first = 0;
1700 if (c.length != 13) return _m3dstbi__err("bad IHDR len","Corrupt PNG");
1701 s->img_x = _m3dstbi__get32be(s); if (s->img_x > (1 << 24)) return _m3dstbi__err("too large","Very large image (corrupt?)");
1702 s->img_y = _m3dstbi__get32be(s); if (s->img_y > (1 << 24)) return _m3dstbi__err("too large","Very large image (corrupt?)");
1703 z->depth = _m3dstbi__get8(s); if (z->depth != 1 && z->depth != 2 && z->depth != 4 && z->depth != 8 && z->depth != 16) return _m3dstbi__err("1/2/4/8/16-bit only","PNG not supported: 1/2/4/8/16-bit only");
1704 color = _m3dstbi__get8(s); if (color > 6) return _m3dstbi__err("bad ctype","Corrupt PNG");
1705 if (color == 3 && z->depth == 16) return _m3dstbi__err("bad ctype","Corrupt PNG");
1706 if (color == 3) pal_img_n = 3; else if (color & 1) return _m3dstbi__err("bad ctype","Corrupt PNG");
1707 comp = _m3dstbi__get8(s); if (comp) return _m3dstbi__err("bad comp method","Corrupt PNG");
1708 filter= _m3dstbi__get8(s); if (filter) return _m3dstbi__err("bad filter method","Corrupt PNG");
1709 interlace = _m3dstbi__get8(s); if (interlace>1) return _m3dstbi__err("bad interlace method","Corrupt PNG");
1710 if (!s->img_x || !s->img_y) return _m3dstbi__err("0-pixel image","Corrupt PNG");
1711 if (!pal_img_n) {
1712 s->img_n = (color & 2 ? 3 : 1) + (color & 4 ? 1 : 0);
1713 if ((1 << 30) / s->img_x / s->img_n < s->img_y) return _m3dstbi__err("too large", "Image too large to decode");
1714 if (scan == STBI__SCAN_header) return 1;
1715 } else {
1716 s->img_n = 1;
1717 if ((1 << 30) / s->img_x / 4 < s->img_y) return _m3dstbi__err("too large","Corrupt PNG");
1718 }
1719 break;
1720 }
1722 case STBI__PNG_TYPE('P','L','T','E'): {
1723 if (first) return _m3dstbi__err("first not IHDR", "Corrupt PNG");
1724 if (c.length > 256*3) return _m3dstbi__err("invalid PLTE","Corrupt PNG");
1725 pal_len = c.length / 3;
1726 if (pal_len * 3 != c.length) return _m3dstbi__err("invalid PLTE","Corrupt PNG");
1727 for (i=0; i < pal_len; ++i) {
1728 palette[i*4+0] = _m3dstbi__get8(s);
1729 palette[i*4+1] = _m3dstbi__get8(s);
1730 palette[i*4+2] = _m3dstbi__get8(s);
1731 palette[i*4+3] = 255;
1732 }
1733 break;
1734 }
1736 case STBI__PNG_TYPE('t','R','N','S'): {
1737 if (first) return _m3dstbi__err("first not IHDR", "Corrupt PNG");
1738 if (z->idata) return _m3dstbi__err("tRNS after IDAT","Corrupt PNG");
1739 if (pal_img_n) {
1740 if (scan == STBI__SCAN_header) { s->img_n = 4; return 1; }
1741 if (pal_len == 0) return _m3dstbi__err("tRNS before PLTE","Corrupt PNG");
1742 if (c.length > pal_len) return _m3dstbi__err("bad tRNS len","Corrupt PNG");
1743 pal_img_n = 4;
1744 for (i=0; i < c.length; ++i)
1745 palette[i*4+3] = _m3dstbi__get8(s);
1746 } else {
1747 if (!(s->img_n & 1)) return _m3dstbi__err("tRNS with alpha","Corrupt PNG");
1748 if (c.length != (_m3dstbi__uint32) s->img_n*2) return _m3dstbi__err("bad tRNS len","Corrupt PNG");
1749 has_trans = 1;
1750 if (z->depth == 16) {
1751 for (k = 0; k < s->img_n; ++k) tc16[k] = (_m3dstbi__uint16)_m3dstbi__get16be(s);
1752 } else {
1753 for (k = 0; k < s->img_n; ++k) tc[k] = (unsigned char)(_m3dstbi__get16be(s) & 255) * _m3dstbi__depth_scale_table[z->depth];
1754 }
1755 }
1756 break;
1757 }
1759 case STBI__PNG_TYPE('I','D','A','T'): {
1760 if (first) return _m3dstbi__err("first not IHDR", "Corrupt PNG");
1761 if (pal_img_n && !pal_len) return _m3dstbi__err("no PLTE","Corrupt PNG");
1762 if (scan == STBI__SCAN_header) { s->img_n = pal_img_n; return 1; }
1763 if ((int)(ioff + c.length) < (int)ioff) return 0;
1764 if (ioff + c.length > idata_limit) {
1765 _m3dstbi__uint32 idata_limit_old = idata_limit;
1766 unsigned char *p;
1767 if (idata_limit == 0) idata_limit = c.length > 4096 ? c.length : 4096;
1768 while (ioff + c.length > idata_limit)
1769 idata_limit *= 2;
1770 STBI_NOTUSED(idata_limit_old);
1771 p = (unsigned char *) STBI_REALLOC_SIZED(z->idata, idata_limit_old, idata_limit); if (p == NULL) return _m3dstbi__err("outofmem", "Out of memory");
1772 z->idata = p;
1773 }
1774 if (!_m3dstbi__getn(s, z->idata+ioff,c.length)) return _m3dstbi__err("outofdata","Corrupt PNG");
1775 ioff += c.length;
1776 break;
1777 }
1779 case STBI__PNG_TYPE('I','E','N','D'): {
1780 _m3dstbi__uint32 raw_len, bpl;
1781 if (first) return _m3dstbi__err("first not IHDR", "Corrupt PNG");
1782 if (scan != STBI__SCAN_load) return 1;
1783 if (z->idata == NULL) return _m3dstbi__err("no IDAT","Corrupt PNG");
1784 bpl = (s->img_x * z->depth + 7) / 8;
1785 raw_len = bpl * s->img_y * s->img_n /* pixels */ + s->img_y /* filter mode per row */;
1786 z->expanded = (unsigned char *) _m3dstbi_zlib_decode_malloc_guesssize_headerflag((char *) z->idata, ioff, raw_len, (int *) &raw_len, 1);
1787 if (z->expanded == NULL) return 0;
1788 STBI_FREE(z->idata); z->idata = NULL;
1789 if ((req_comp == s->img_n+1 && req_comp != 3 && !pal_img_n) || has_trans)
1790 s->img_out_n = s->img_n+1;
1791 else
1792 s->img_out_n = s->img_n;
1793 if (!_m3dstbi__create_png_image(z, z->expanded, raw_len, s->img_out_n, z->depth, color, interlace)) return 0;
1794 if (has_trans) {
1795 if (z->depth == 16) {
1796 if (!_m3dstbi__compute_transparency16(z, tc16, s->img_out_n)) return 0;
1797 } else {
1798 if (!_m3dstbi__compute_transparency(z, tc, s->img_out_n)) return 0;
1799 }
1800 }
1801 if (pal_img_n) {
1802 s->img_n = pal_img_n;
1803 s->img_out_n = pal_img_n;
1804 if (req_comp >= 3) s->img_out_n = req_comp;
1805 if (!_m3dstbi__expand_png_palette(z, palette, pal_len, s->img_out_n))
1806 return 0;
1807 } else if (has_trans) {
1808 ++s->img_n;
1809 }
1810 STBI_FREE(z->expanded); z->expanded = NULL;
1811 return 1;
1812 }
1814 default:
1815 if (first) return _m3dstbi__err("first not IHDR", "Corrupt PNG");
1816 if ((c.type & (1 << 29)) == 0) {
1817 return _m3dstbi__err("invalid_chunk", "PNG not supported: unknown PNG chunk type");
1818 }
1819 _m3dstbi__skip(s, c.length);
1820 break;
1821 }
1822 _m3dstbi__get32be(s);
1823 }
1824}
1826static void *_m3dstbi__do_png(_m3dstbi__png *p, int *x, int *y, int *n, int req_comp, _m3dstbi__result_info *ri)
1827{
1828 void *result=NULL;
1829 if (req_comp < 0 || req_comp > 4) { _m3dstbi__err("bad req_comp", "Internal error"); return NULL; }
1830 if (_m3dstbi__parse_png_file(p, STBI__SCAN_load, req_comp)) {
1831 if (p->depth < 8)
1832 ri->bits_per_channel = 8;
1833 else
1834 ri->bits_per_channel = p->depth;
1835 result = p->out;
1836 p->out = NULL;
1837 if (req_comp && req_comp != p->s->img_out_n) {
1838 if (ri->bits_per_channel == 8)
1839 result = _m3dstbi__convert_format((unsigned char *) result, p->s->img_out_n, req_comp, p->s->img_x, p->s->img_y);
1840 else
1841 result = _m3dstbi__convert_format16((_m3dstbi__uint16 *) result, p->s->img_out_n, req_comp, p->s->img_x, p->s->img_y);
1842 p->s->img_out_n = req_comp;
1843 if (result == NULL) return result;
1844 }
1845 *x = p->s->img_x;
1846 *y = p->s->img_y;
1847 if (n) *n = p->s->img_n;
1848 }
1849 STBI_FREE(p->out); p->out = NULL;
1850 STBI_FREE(p->expanded); p->expanded = NULL;
1851 STBI_FREE(p->idata); p->idata = NULL;
1853 return result;
1854}
1856static void *_m3dstbi__png_load(_m3dstbi__context *s, int *x, int *y, int *comp, int req_comp, _m3dstbi__result_info *ri)
1857{
1858 _m3dstbi__png p;
1859 p.s = s;
1860 return _m3dstbi__do_png(&p, x,y,comp,req_comp, ri);
1861}
1862#define stbi__context _m3dstbi__context
1863#define stbi__result_info _m3dstbi__result_info
1864#define stbi__png_load _m3dstbi__png_load
1865#define stbi_zlib_decode_malloc_guesssize_headerflag _m3dstbi_zlib_decode_malloc_guesssize_headerflag
1866#endif
1867#if !defined(M3D_NOIMPORTER) && defined(STBI_INCLUDE_STB_IMAGE_H) && !defined(STB_IMAGE_IMPLEMENTATION)
1868#error "stb_image.h included without STB_IMAGE_IMPLEMENTATION. Sorry, we need some stuff defined inside the ifguard for proper integration"
1869#endif
1871#if defined(M3D_EXPORTER) && !defined(INCLUDE_STB_IMAGE_WRITE_H)
1872/* zlib_compressor from
1874 stb_image_write - v1.13 - public domain - http://nothings.org/stb/stb_image_write.h
1875*/
1876typedef unsigned char _m3dstbiw__uc;
1877typedef unsigned short _m3dstbiw__us;
1879typedef uint16_t _m3dstbiw__uint16;
1880typedef int16_t _m3dstbiw__int16;
1881typedef uint32_t _m3dstbiw__uint32;
1882typedef int32_t _m3dstbiw__int32;
1884#define STBIW_MALLOC(s) M3D_MALLOC(s)
1885#define STBIW_REALLOC(p,ns) M3D_REALLOC(p,ns)
1886#define STBIW_REALLOC_SIZED(p,oldsz,newsz) STBIW_REALLOC(p,newsz)
1887#define STBIW_FREE M3D_FREE
1888#define STBIW_MEMMOVE memmove
1889#define STBIW_UCHAR (uint8_t)
1890#define STBIW_ASSERT(x)
1891#define _m3dstbiw___sbraw(a) ((int *) (a) - 2)
1892#define _m3dstbiw___sbm(a) _m3dstbiw___sbraw(a)[0]
1893#define _m3dstbiw___sbn(a) _m3dstbiw___sbraw(a)[1]
1895#define _m3dstbiw___sbneedgrow(a,n) ((a)==0 || _m3dstbiw___sbn(a)+n >= _m3dstbiw___sbm(a))
1896#define _m3dstbiw___sbmaybegrow(a,n) (_m3dstbiw___sbneedgrow(a,(n)) ? _m3dstbiw___sbgrow(a,n) : 0)
1897#define _m3dstbiw___sbgrow(a,n) _m3dstbiw___sbgrowf((void **) &(a), (n), sizeof(*(a)))
1899#define _m3dstbiw___sbpush(a, v) (_m3dstbiw___sbmaybegrow(a,1), (a)[_m3dstbiw___sbn(a)++] = (v))
1900#define _m3dstbiw___sbcount(a) ((a) ? _m3dstbiw___sbn(a) : 0)
1901#define _m3dstbiw___sbfree(a) ((a) ? STBIW_FREE(_m3dstbiw___sbraw(a)),0 : 0)
1903static void *_m3dstbiw___sbgrowf(void **arr, int increment, int itemsize)
1904{
1905 int m = *arr ? 2*_m3dstbiw___sbm(*arr)+increment : increment+1;
1906 void *p = STBIW_REALLOC_SIZED(*arr ? _m3dstbiw___sbraw(*arr) : 0, *arr ? (_m3dstbiw___sbm(*arr)*itemsize + sizeof(int)*2) : 0, itemsize * m + sizeof(int)*2);
1907 STBIW_ASSERT(p);
1908 if (p) {
1909 if (!*arr) ((int *) p)[1] = 0;
1910 *arr = (void *) ((int *) p + 2);
1911 _m3dstbiw___sbm(*arr) = m;
1912 }
1913 return *arr;
1914}
1916static unsigned char *_m3dstbiw___zlib_flushf(unsigned char *data, unsigned int *bitbuffer, int *bitcount)
1917{
1918 while (*bitcount >= 8) {
1919 _m3dstbiw___sbpush(data, STBIW_UCHAR(*bitbuffer));
1920 *bitbuffer >>= 8;
1921 *bitcount -= 8;
1922 }
1923 return data;
1924}
1926static int _m3dstbiw___zlib_bitrev(int code, int codebits)
1927{
1928 int res=0;
1929 while (codebits--) {
1930 res = (res << 1) | (code & 1);
1931 code >>= 1;
1932 }
1933 return res;
1934}
1936static unsigned int _m3dstbiw___zlib_countm(unsigned char *a, unsigned char *b, int limit)
1937{
1938 int i;
1939 for (i=0; i < limit && i < 258; ++i)
1940 if (a[i] != b[i]) break;
1941 return i;
1942}
1944static unsigned int _m3dstbiw___zhash(unsigned char *data)
1945{
1946 _m3dstbiw__uint32 hash = data[0] + (data[1] << 8) + (data[2] << 16);
1947 hash ^= hash << 3;
1948 hash += hash >> 5;
1949 hash ^= hash << 4;
1950 hash += hash >> 17;
1951 hash ^= hash << 25;
1952 hash += hash >> 6;
1953 return hash;
1954}
1956#define _m3dstbiw___zlib_flush() (out = _m3dstbiw___zlib_flushf(out, &bitbuf, &bitcount))
1957#define _m3dstbiw___zlib_add(code,codebits) \
1958 (bitbuf |= (code) << bitcount, bitcount += (codebits), _m3dstbiw___zlib_flush())
1959#define _m3dstbiw___zlib_huffa(b,c) _m3dstbiw___zlib_add(_m3dstbiw___zlib_bitrev(b,c),c)
1960#define _m3dstbiw___zlib_huff1(n) _m3dstbiw___zlib_huffa(0x30 + (n), 8)
1961#define _m3dstbiw___zlib_huff2(n) _m3dstbiw___zlib_huffa(0x190 + (n)-144, 9)
1962#define _m3dstbiw___zlib_huff3(n) _m3dstbiw___zlib_huffa(0 + (n)-256,7)
1963#define _m3dstbiw___zlib_huff4(n) _m3dstbiw___zlib_huffa(0xc0 + (n)-280,8)
1964#define _m3dstbiw___zlib_huff(n) ((n) <= 143 ? _m3dstbiw___zlib_huff1(n) : (n) <= 255 ? _m3dstbiw___zlib_huff2(n) : (n) <= 279 ? _m3dstbiw___zlib_huff3(n) : _m3dstbiw___zlib_huff4(n))
1965#define _m3dstbiw___zlib_huffb(n) ((n) <= 143 ? _m3dstbiw___zlib_huff1(n) : _m3dstbiw___zlib_huff2(n))
1967#define _m3dstbiw___ZHASH 16384
1969unsigned char * _m3dstbi_zlib_compress(unsigned char *data, int data_len, int *out_len, int quality)
1970{
1971 static unsigned short lengthc[] = { 3,4,5,6,7,8,9,10,11,13,15,17,19,23,27,31,35,43,51,59,67,83,99,115,131,163,195,227,258, 259 };
1972 static unsigned char lengtheb[]= { 0,0,0,0,0,0,0, 0, 1, 1, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 0 };
1973 static unsigned short distc[] = { 1,2,3,4,5,7,9,13,17,25,33,49,65,97,129,193,257,385,513,769,1025,1537,2049,3073,4097,6145,8193,12289,16385,24577, 32768 };
1974 static unsigned char disteb[] = { 0,0,0,0,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13 };
1975 unsigned int bitbuf=0;
1976 int i,j, bitcount=0;
1977 unsigned char *out = NULL;
1978 unsigned char ***hash_table = (unsigned char***) STBIW_MALLOC(_m3dstbiw___ZHASH * sizeof(char**));
1979 if (hash_table == NULL)
1980 return NULL;
1981 if (quality < 5) quality = 5;
1983 _m3dstbiw___sbpush(out, 0x78);
1984 _m3dstbiw___sbpush(out, 0x5e);
1985 _m3dstbiw___zlib_add(1,1);
1986 _m3dstbiw___zlib_add(1,2);
1988 for (i=0; i < _m3dstbiw___ZHASH; ++i)
1989 hash_table[i] = NULL;
1991 i=0;
1992 while (i < data_len-3) {
1993 int h = _m3dstbiw___zhash(data+i)&(_m3dstbiw___ZHASH-1), best=3;
1994 unsigned char *bestloc = 0;
1995 unsigned char **hlist = hash_table[h];
1996 int n = _m3dstbiw___sbcount(hlist);
1997 for (j=0; j < n; ++j) {
1998 if (hlist[j]-data > i-32768) {
1999 int d = _m3dstbiw___zlib_countm(hlist[j], data+i, data_len-i);
2000 if (d >= best) best=d,bestloc=hlist[j];
2001 }
2002 }
2003 if (hash_table[h] && _m3dstbiw___sbn(hash_table[h]) == 2*quality) {
2004 STBIW_MEMMOVE(hash_table[h], hash_table[h]+quality, sizeof(hash_table[h][0])*quality);
2005 _m3dstbiw___sbn(hash_table[h]) = quality;
2006 }
2007 _m3dstbiw___sbpush(hash_table[h],data+i);
2009 if (bestloc) {
2010 h = _m3dstbiw___zhash(data+i+1)&(_m3dstbiw___ZHASH-1);
2011 hlist = hash_table[h];
2012 n = _m3dstbiw___sbcount(hlist);
2013 for (j=0; j < n; ++j) {
2014 if (hlist[j]-data > i-32767) {
2015 int e = _m3dstbiw___zlib_countm(hlist[j], data+i+1, data_len-i-1);
2016 if (e > best) {
2017 bestloc = NULL;
2018 break;
2019 }
2020 }
2021 }
2022 }
2024 if (bestloc) {
2025 int d = (int) (data+i - bestloc);
2026 STBIW_ASSERT(d <= 32767 && best <= 258);
2027 for (j=0; best > lengthc[j+1]-1; ++j);
2028 _m3dstbiw___zlib_huff(j+257);
2029 if (lengtheb[j]) _m3dstbiw___zlib_add(best - lengthc[j], lengtheb[j]);
2030 for (j=0; d > distc[j+1]-1; ++j);
2031 _m3dstbiw___zlib_add(_m3dstbiw___zlib_bitrev(j,5),5);
2032 if (disteb[j]) _m3dstbiw___zlib_add(d - distc[j], disteb[j]);
2033 i += best;
2034 } else {
2035 _m3dstbiw___zlib_huffb(data[i]);
2036 ++i;
2037 }
2038 }
2039 for (;i < data_len; ++i)
2040 _m3dstbiw___zlib_huffb(data[i]);
2041 _m3dstbiw___zlib_huff(256);
2042 while (bitcount)
2043 _m3dstbiw___zlib_add(0,1);
2045 for (i=0; i < _m3dstbiw___ZHASH; ++i)
2046 (void) _m3dstbiw___sbfree(hash_table[i]);
2047 STBIW_FREE(hash_table);
2049 {
2050 unsigned int s1=1, s2=0;
2051 int blocklen = (int) (data_len % 5552);
2052 j=0;
2053 while (j < data_len) {
2054 for (i=0; i < blocklen; ++i) s1 += data[j+i], s2 += s1;
2055 s1 %= 65521, s2 %= 65521;
2056 j += blocklen;
2057 blocklen = 5552;
2058 }
2059 _m3dstbiw___sbpush(out, STBIW_UCHAR(s2 >> 8));
2060 _m3dstbiw___sbpush(out, STBIW_UCHAR(s2));
2061 _m3dstbiw___sbpush(out, STBIW_UCHAR(s1 >> 8));
2062 _m3dstbiw___sbpush(out, STBIW_UCHAR(s1));
2063 }
2064 *out_len = _m3dstbiw___sbn(out);
2065 STBIW_MEMMOVE(_m3dstbiw___sbraw(out), out, *out_len);
2066 return (unsigned char *) _m3dstbiw___sbraw(out);
2067}
2068#define stbi_zlib_compress _m3dstbi_zlib_compress
2069#else
2070unsigned char * _m3dstbi_zlib_compress(unsigned char *data, int data_len, int *out_len, int quality);
2071#endif
2073#define M3D_CHUNKMAGIC(m, a,b,c,d) ((m)[0]==(a) && (m)[1]==(b) && (m)[2]==(c) && (m)[3]==(d))
2075#ifdef M3D_ASCII
2076#include <stdio.h> /* get sprintf */
2077#include <locale.h> /* sprintf and strtod cares about number locale */
2078#endif
2079#ifdef M3D_PROFILING
2080#include <sys/time.h>
2081#endif
2083#if !defined(M3D_NOIMPORTER) && defined(M3D_ASCII)
2084/* helper functions for the ASCII parser */
2085static char *_m3d_findarg(char *s) {
2086 while(s && *s && *s != ' ' && *s != '\t' && *s != '\r' && *s != '\n') s++;
2087 while(s && *s && (*s == ' ' || *s == '\t')) s++;
2088 return s;
2089}
2090static char *_m3d_findnl(char *s) {
2091 while(s && *s && *s != '\r' && *s != '\n') s++;
2092 if(*s == '\r') s++;
2093 if(*s == '\n') s++;
2094 return s;
2095}
2096static char *_m3d_gethex(char *s, uint32_t *ret)
2097{
2098 if(*s == '#') s++;
2099 *ret = 0;
2100 for(; *s; s++) {
2101 if(*s >= '0' && *s <= '9') { *ret <<= 4; *ret += (uint32_t)(*s-'0'); }
2102 else if(*s >= 'a' && *s <= 'f') { *ret <<= 4; *ret += (uint32_t)(*s-'a'+10); }
2103 else if(*s >= 'A' && *s <= 'F') { *ret <<= 4; *ret += (uint32_t)(*s-'A'+10); }
2104 else break;
2105 }
2106 return _m3d_findarg(s);
2107}
2108static char *_m3d_getint(char *s, uint32_t *ret)
2109{
2110 char *e = s;
2111 if(!s || !*s || *s == '\r' || *s == '\n') return s;
2112 for(; *e >= '0' && *e <= '9'; e++);
2113 *ret = atoi(s);
2114 return e;
2115}
2116static char *_m3d_getfloat(char *s, M3D_FLOAT *ret)
2117{
2118 char *e = s;
2119 if(!s || !*s || *s == '\r' || *s == '\n') return s;
2120 for(; *e == '-' || *e == '+' || *e == '.' || (*e >= '0' && *e <= '9') || *e == 'e' || *e == 'E'; e++);
2121 *ret = (M3D_FLOAT)strtod(s, NULL);
2122 return _m3d_findarg(e);
2123}
2124#endif
2125#if !defined(M3D_NODUP) && (!defined(M3D_NOIMPORTER) || defined(M3D_ASCII) || defined(M3D_EXPORTER))
2126/* helper function to create safe strings */
2127char *_m3d_safestr(char *in, int morelines)
2128{
2129 char *out, *o, *i = in;
2130 int l;
2131 if(!in || !*in) {
2132 out = (char*)M3D_MALLOC(1);
2133 if(!out) return NULL;
2134 out[0] =0;
2135 } else {
2136 for(o = in, l = 0; *o && ((morelines & 1) || (*o != '\r' && *o != '\n')) && l < 256; o++, l++);
2137 out = o = (char*)M3D_MALLOC(l+1);
2138 if(!out) return NULL;
2139 while(*i == ' ' || *i == '\t' || *i == '\r' || (morelines && *i == '\n')) i++;
2140 for(; *i && (morelines || (*i != '\r' && *i != '\n')); i++) {
2141 if(*i == '\r') continue;
2142 if(*i == '\n') {
2143 if(morelines >= 3 && o > out && *(o-1) == '\n') break;
2144 if(i > in && *(i-1) == '\n') continue;
2145 if(morelines & 1) {
2146 if(morelines == 1) *o++ = '\r';
2147 *o++ = '\n';
2148 } else
2149 break;
2150 } else
2151 if(*i == ' ' || *i == '\t') {
2152 *o++ = morelines? ' ' : '_';
2153 } else
2154 *o++ = !morelines && (*i == '/' || *i == '\\') ? '_' : *i;
2155 }
2156 for(; o > out && (*(o-1) == ' ' || *(o-1) == '\t' || *(o-1) == '\r' || *(o-1) == '\n'); o--);
2157 *o = 0;
2158 out = (char*)M3D_REALLOC(out, (uintptr_t)o - (uintptr_t)out + 1);
2159 }
2160 return out;
2161}
2162#endif
2163#ifndef M3D_NOIMPORTER
2164/* helper function to load and decode/generate a texture */
2165M3D_INDEX _m3d_gettx(m3d_t *model, m3dread_t readfilecb, m3dfree_t freecb, char *fn)
2166{
2167 unsigned int i, len = 0;
2168 unsigned char *buff = NULL;
2169 char *fn2;
2170 unsigned int w, h;
2171 stbi__context s;
2172 stbi__result_info ri;
2174 /* failsafe */
2175 if(!fn || !*fn) return M3D_UNDEF;
2176 /* do we have loaded this texture already? */
2177 for(i = 0; i < model->numtexture; i++)
2178 if(!strcmp(fn, model->texture[i].name)) return i;
2179 /* see if it's inlined in the model */
2180 if(model->inlined) {
2181 for(i = 0; i < model->numinlined; i++)
2182 if(!strcmp(fn, model->inlined[i].name)) {
2183 buff = model->inlined[i].data;
2184 len = model->inlined[i].length;
2185 freecb = NULL;
2186 break;
2187 }
2188 }
2189 /* try to load from external source */
2190 if(!buff && readfilecb) {
2191 i = (unsigned int)strlen(fn);
2192 if(i < 5 || fn[i - 4] != '.') {
2193 fn2 = (char*)M3D_MALLOC(i + 5);
2194 if(!fn2) { model->errcode = M3D_ERR_ALLOC; return M3D_UNDEF; }
2195 memcpy(fn2, fn, i);
2196 memcpy(fn2+i, ".png", 5);
2197 buff = (*readfilecb)(fn2, &len);
2198 M3D_FREE(fn2);
2199 }
2200 if(!buff) {
2201 buff = (*readfilecb)(fn, &len);
2202 if(!buff) return M3D_UNDEF;
2203 }
2204 }
2205 /* add to textures array */
2206 i = model->numtexture++;
2207 model->texture = (m3dtx_t*)M3D_REALLOC(model->texture, model->numtexture * sizeof(m3dtx_t));
2208 if(!model->texture) {
2209 if(buff && freecb) (*freecb)(buff);
2210 model->errcode = M3D_ERR_ALLOC;
2211 return M3D_UNDEF;
2212 }
2213 model->texture[i].name = fn;
2214 model->texture[i].w = model->texture[i].h = 0; model->texture[i].d = NULL;
2215 if(buff) {
2216 if(buff[0] == 0x89 && buff[1] == 'P' && buff[2] == 'N' && buff[3] == 'G') {
2217 s.read_from_callbacks = 0;
2218 s.img_buffer = s.img_buffer_original = (unsigned char *) buff;
2219 s.img_buffer_end = s.img_buffer_original_end = (unsigned char *) buff+len;
2220 /* don't use model->texture[i].w directly, it's a uint16_t */
2221 w = h = len = 0;
2222 ri.bits_per_channel = 8;
2223 model->texture[i].d = (uint8_t*)stbi__png_load(&s, (int*)&w, (int*)&h, (int*)&len, 0, &ri);
2224 model->texture[i].w = w;
2225 model->texture[i].h = h;
2226 model->texture[i].f = (uint8_t)len;
2227 } else {
2228#ifdef M3D_TX_INTERP
2229 if((model->errcode = M3D_TX_INTERP(fn, buff, len, &model->texture[i])) != M3D_SUCCESS) {
2230 M3D_LOG("Unable to generate texture");
2231 M3D_LOG(fn);
2232 }
2233#else
2234 M3D_LOG("Unimplemented interpreter");
2235 M3D_LOG(fn);
2236#endif
2237 }
2238 if(freecb) (*freecb)(buff);
2239 }
2240 if(!model->texture[i].d)
2241 model->errcode = M3D_ERR_UNKIMG;
2242 return i;
2243}
2245/* helper function to load and generate a procedural surface */
2246void _m3d_getpr(m3d_t *model, _unused m3dread_t readfilecb, _unused m3dfree_t freecb, _unused char *fn)
2247{
2248#ifdef M3D_PR_INTERP
2249 unsigned int i, len = 0;
2250 unsigned char *buff = readfilecb && fn && *fn ? (*readfilecb)(fn, &len) : NULL;
2252 if(!buff && fn && *fn && model->inlined) {
2253 for(i = 0; i < model->numinlined; i++)
2254 if(!strcmp(fn, model->inlined[i].name)) {
2255 buff = model->inlined[i].data;
2256 len = model->inlined[i].length;
2257 freecb = NULL;
2258 break;
2259 }
2260 }
2261 if(!buff || !len || (model->errcode = M3D_PR_INTERP(fn, buff, len, model)) != M3D_SUCCESS) {
2262 M3D_LOG("Unable to generate procedural surface");
2263 M3D_LOG(fn);
2264 model->errcode = M3D_ERR_UNKIMG;
2265 }
2266 if(freecb && buff) (*freecb)(buff);
2267#else
2268 (void)readfilecb;
2269 (void)freecb;
2270 (void)fn;
2271 M3D_LOG("Unimplemented interpreter");
2272 M3D_LOG(fn);
2273 model->errcode = M3D_ERR_UNIMPL;
2274#endif
2275}
2276/* helpers to read indices from data stream */
2277#define M3D_GETSTR(x) do{offs=0;data=_m3d_getidx(data,model->si_s,&offs);x=offs?((char*)model->raw+16+offs):NULL;}while(0)
2278_inline static unsigned char *_m3d_getidx(unsigned char *data, char type, M3D_INDEX *idx)
2279{
2280 switch(type) {
2281 case 1: *idx = data[0] > 253 ? (int8_t)data[0] : data[0]; data++; break;
2282 case 2: *idx = *((uint16_t*)data) > 65533 ? *((int16_t*)data) : *((uint16_t*)data); data += 2; break;
2283 case 4: *idx = *((int32_t*)data); data += 4; break;
2284 }
2285 return data;
2286}
2288#ifndef M3D_NOANIMATION
2289/* multiply 4 x 4 matrices. Do not use float *r[16] as argument, because some compilers misinterpret that as
2290 * 16 pointers each pointing to a float, but we need a single pointer to 16 floats. */
2291void _m3d_mul(M3D_FLOAT *r, M3D_FLOAT *a, M3D_FLOAT *b)
2292{
2293 r[ 0] = b[ 0] * a[ 0] + b[ 4] * a[ 1] + b[ 8] * a[ 2] + b[12] * a[ 3];
2294 r[ 1] = b[ 1] * a[ 0] + b[ 5] * a[ 1] + b[ 9] * a[ 2] + b[13] * a[ 3];
2295 r[ 2] = b[ 2] * a[ 0] + b[ 6] * a[ 1] + b[10] * a[ 2] + b[14] * a[ 3];
2296 r[ 3] = b[ 3] * a[ 0] + b[ 7] * a[ 1] + b[11] * a[ 2] + b[15] * a[ 3];
2297 r[ 4] = b[ 0] * a[ 4] + b[ 4] * a[ 5] + b[ 8] * a[ 6] + b[12] * a[ 7];
2298 r[ 5] = b[ 1] * a[ 4] + b[ 5] * a[ 5] + b[ 9] * a[ 6] + b[13] * a[ 7];
2299 r[ 6] = b[ 2] * a[ 4] + b[ 6] * a[ 5] + b[10] * a[ 6] + b[14] * a[ 7];
2300 r[ 7] = b[ 3] * a[ 4] + b[ 7] * a[ 5] + b[11] * a[ 6] + b[15] * a[ 7];
2301 r[ 8] = b[ 0] * a[ 8] + b[ 4] * a[ 9] + b[ 8] * a[10] + b[12] * a[11];
2302 r[ 9] = b[ 1] * a[ 8] + b[ 5] * a[ 9] + b[ 9] * a[10] + b[13] * a[11];
2303 r[10] = b[ 2] * a[ 8] + b[ 6] * a[ 9] + b[10] * a[10] + b[14] * a[11];
2304 r[11] = b[ 3] * a[ 8] + b[ 7] * a[ 9] + b[11] * a[10] + b[15] * a[11];
2305 r[12] = b[ 0] * a[12] + b[ 4] * a[13] + b[ 8] * a[14] + b[12] * a[15];
2306 r[13] = b[ 1] * a[12] + b[ 5] * a[13] + b[ 9] * a[14] + b[13] * a[15];
2307 r[14] = b[ 2] * a[12] + b[ 6] * a[13] + b[10] * a[14] + b[14] * a[15];
2308 r[15] = b[ 3] * a[12] + b[ 7] * a[13] + b[11] * a[14] + b[15] * a[15];
2309}
2310/* calculate 4 x 4 matrix inverse */
2311void _m3d_inv(M3D_FLOAT *m)
2312{
2313 M3D_FLOAT r[16];
2314 M3D_FLOAT det =
2315 m[ 0]*m[ 5]*m[10]*m[15] - m[ 0]*m[ 5]*m[11]*m[14] + m[ 0]*m[ 6]*m[11]*m[13] - m[ 0]*m[ 6]*m[ 9]*m[15]
2316 + m[ 0]*m[ 7]*m[ 9]*m[14] - m[ 0]*m[ 7]*m[10]*m[13] - m[ 1]*m[ 6]*m[11]*m[12] + m[ 1]*m[ 6]*m[ 8]*m[15]
2317 - m[ 1]*m[ 7]*m[ 8]*m[14] + m[ 1]*m[ 7]*m[10]*m[12] - m[ 1]*m[ 4]*m[10]*m[15] + m[ 1]*m[ 4]*m[11]*m[14]
2318 + m[ 2]*m[ 7]*m[ 8]*m[13] - m[ 2]*m[ 7]*m[ 9]*m[12] + m[ 2]*m[ 4]*m[ 9]*m[15] - m[ 2]*m[ 4]*m[11]*m[13]
2319 + m[ 2]*m[ 5]*m[11]*m[12] - m[ 2]*m[ 5]*m[ 8]*m[15] - m[ 3]*m[ 4]*m[ 9]*m[14] + m[ 3]*m[ 4]*m[10]*m[13]
2320 - m[ 3]*m[ 5]*m[10]*m[12] + m[ 3]*m[ 5]*m[ 8]*m[14] - m[ 3]*m[ 6]*m[ 8]*m[13] + m[ 3]*m[ 6]*m[ 9]*m[12];
2321 if(det == (M3D_FLOAT)0.0 || det == (M3D_FLOAT)-0.0) det = (M3D_FLOAT)1.0; else det = (M3D_FLOAT)1.0 / det;
2322 r[ 0] = det *(m[ 5]*(m[10]*m[15] - m[11]*m[14]) + m[ 6]*(m[11]*m[13] - m[ 9]*m[15]) + m[ 7]*(m[ 9]*m[14] - m[10]*m[13]));
2323 r[ 1] = -det*(m[ 1]*(m[10]*m[15] - m[11]*m[14]) + m[ 2]*(m[11]*m[13] - m[ 9]*m[15]) + m[ 3]*(m[ 9]*m[14] - m[10]*m[13]));
2324 r[ 2] = det *(m[ 1]*(m[ 6]*m[15] - m[ 7]*m[14]) + m[ 2]*(m[ 7]*m[13] - m[ 5]*m[15]) + m[ 3]*(m[ 5]*m[14] - m[ 6]*m[13]));
2325 r[ 3] = -det*(m[ 1]*(m[ 6]*m[11] - m[ 7]*m[10]) + m[ 2]*(m[ 7]*m[ 9] - m[ 5]*m[11]) + m[ 3]*(m[ 5]*m[10] - m[ 6]*m[ 9]));
2326 r[ 4] = -det*(m[ 4]*(m[10]*m[15] - m[11]*m[14]) + m[ 6]*(m[11]*m[12] - m[ 8]*m[15]) + m[ 7]*(m[ 8]*m[14] - m[10]*m[12]));
2327 r[ 5] = det *(m[ 0]*(m[10]*m[15] - m[11]*m[14]) + m[ 2]*(m[11]*m[12] - m[ 8]*m[15]) + m[ 3]*(m[ 8]*m[14] - m[10]*m[12]));
2328 r[ 6] = -det*(m[ 0]*(m[ 6]*m[15] - m[ 7]*m[14]) + m[ 2]*(m[ 7]*m[12] - m[ 4]*m[15]) + m[ 3]*(m[ 4]*m[14] - m[ 6]*m[12]));
2329 r[ 7] = det *(m[ 0]*(m[ 6]*m[11] - m[ 7]*m[10]) + m[ 2]*(m[ 7]*m[ 8] - m[ 4]*m[11]) + m[ 3]*(m[ 4]*m[10] - m[ 6]*m[ 8]));
2330 r[ 8] = det *(m[ 4]*(m[ 9]*m[15] - m[11]*m[13]) + m[ 5]*(m[11]*m[12] - m[ 8]*m[15]) + m[ 7]*(m[ 8]*m[13] - m[ 9]*m[12]));
2331 r[ 9] = -det*(m[ 0]*(m[ 9]*m[15] - m[11]*m[13]) + m[ 1]*(m[11]*m[12] - m[ 8]*m[15]) + m[ 3]*(m[ 8]*m[13] - m[ 9]*m[12]));
2332 r[10] = det *(m[ 0]*(m[ 5]*m[15] - m[ 7]*m[13]) + m[ 1]*(m[ 7]*m[12] - m[ 4]*m[15]) + m[ 3]*(m[ 4]*m[13] - m[ 5]*m[12]));
2333 r[11] = -det*(m[ 0]*(m[ 5]*m[11] - m[ 7]*m[ 9]) + m[ 1]*(m[ 7]*m[ 8] - m[ 4]*m[11]) + m[ 3]*(m[ 4]*m[ 9] - m[ 5]*m[ 8]));
2334 r[12] = -det*(m[ 4]*(m[ 9]*m[14] - m[10]*m[13]) + m[ 5]*(m[10]*m[12] - m[ 8]*m[14]) + m[ 6]*(m[ 8]*m[13] - m[ 9]*m[12]));
2335 r[13] = det *(m[ 0]*(m[ 9]*m[14] - m[10]*m[13]) + m[ 1]*(m[10]*m[12] - m[ 8]*m[14]) + m[ 2]*(m[ 8]*m[13] - m[ 9]*m[12]));
2336 r[14] = -det*(m[ 0]*(m[ 5]*m[14] - m[ 6]*m[13]) + m[ 1]*(m[ 6]*m[12] - m[ 4]*m[14]) + m[ 2]*(m[ 4]*m[13] - m[ 5]*m[12]));
2337 r[15] = det *(m[ 0]*(m[ 5]*m[10] - m[ 6]*m[ 9]) + m[ 1]*(m[ 6]*m[ 8] - m[ 4]*m[10]) + m[ 2]*(m[ 4]*m[ 9] - m[ 5]*m[ 8]));
2338 memcpy(m, &r, sizeof(r));
2339}
2340/* compose a coloumn major 4 x 4 matrix from vec3 position and vec4 orientation/rotation quaternion */
2341void _m3d_mat(M3D_FLOAT *r, m3dv_t *p, m3dv_t *q)
2342{
2343 if(q->x == (M3D_FLOAT)0.0 && q->y == (M3D_FLOAT)0.0 && q->z >=(M3D_FLOAT) 0.7071065 && q->z <= (M3D_FLOAT)0.7071075 &&
2344 q->w == (M3D_FLOAT)0.0) {
2345 r[ 1] = r[ 2] = r[ 4] = r[ 6] = r[ 8] = r[ 9] = (M3D_FLOAT)0.0;
2346 r[ 0] = r[ 5] = r[10] = (M3D_FLOAT)-1.0;
2347 } else {
2348 r[ 0] = 1 - 2 * (q->y * q->y + q->z * q->z); if(r[ 0]>-M3D_EPSILON && r[ 0]<M3D_EPSILON) r[ 0]=(M3D_FLOAT)0.0;
2349 r[ 1] = 2 * (q->x * q->y - q->z * q->w); if(r[ 1]>-M3D_EPSILON && r[ 1]<M3D_EPSILON) r[ 1]=(M3D_FLOAT)0.0;
2350 r[ 2] = 2 * (q->x * q->z + q->y * q->w); if(r[ 2]>-M3D_EPSILON && r[ 2]<M3D_EPSILON) r[ 2]=(M3D_FLOAT)0.0;
2351 r[ 4] = 2 * (q->x * q->y + q->z * q->w); if(r[ 4]>-M3D_EPSILON && r[ 4]<M3D_EPSILON) r[ 4]=(M3D_FLOAT)0.0;
2352 r[ 5] = 1 - 2 * (q->x * q->x + q->z * q->z); if(r[ 5]>-M3D_EPSILON && r[ 5]<M3D_EPSILON) r[ 5]=(M3D_FLOAT)0.0;
2353 r[ 6] = 2 * (q->y * q->z - q->x * q->w); if(r[ 6]>-M3D_EPSILON && r[ 6]<M3D_EPSILON) r[ 6]=(M3D_FLOAT)0.0;
2354 r[ 8] = 2 * (q->x * q->z - q->y * q->w); if(r[ 8]>-M3D_EPSILON && r[ 8]<M3D_EPSILON) r[ 8]=(M3D_FLOAT)0.0;
2355 r[ 9] = 2 * (q->y * q->z + q->x * q->w); if(r[ 9]>-M3D_EPSILON && r[ 9]<M3D_EPSILON) r[ 9]=(M3D_FLOAT)0.0;
2356 r[10] = 1 - 2 * (q->x * q->x + q->y * q->y); if(r[10]>-M3D_EPSILON && r[10]<M3D_EPSILON) r[10]=(M3D_FLOAT)0.0;
2357 }
2358 r[ 3] = p->x; r[ 7] = p->y; r[11] = p->z;
2359 r[12] = 0; r[13] = 0; r[14] = 0; r[15] = 1;
2360}
2361#endif
2362#if !defined(M3D_NOANIMATION) || !defined(M3D_NONORMALS)
2363/* portable fast inverse square root calculation. returns 1/sqrt(x) */
2364static M3D_FLOAT _m3d_rsq(M3D_FLOAT x)
2365{
2366#ifdef M3D_DOUBLE
2367 return ((M3D_FLOAT)15.0/(M3D_FLOAT)8.0) + ((M3D_FLOAT)-5.0/(M3D_FLOAT)4.0)*x + ((M3D_FLOAT)3.0/(M3D_FLOAT)8.0)*x*x;
2368#else
2369 /* John Carmack's */
2370 float x2 = x * 0.5f;
2371 uint32_t *i = (uint32_t*)&x;
2372 *i = (0x5f3759df - (*i >> 1));
2373 return x * (1.5f - (x2 * x * x));
2374#endif
2375}
2376#endif
2378/**
2379 * Function to decode a Model 3D into in-memory format
2380 */
2381m3d_t *m3d_load(unsigned char *data, m3dread_t readfilecb, m3dfree_t freecb, m3d_t *mtllib)
2382{
2383 unsigned char *end, *chunk, *buff, weights[8];
2384 unsigned int i, j, k, l, n, am, len = 0, reclen, offs;
2385#ifndef M3D_NOVOXELS
2386 int32_t min_x, min_y, min_z, max_x, max_y, max_z, sx, sy, sz, x, y, z;
2387 M3D_INDEX edge[8], enorm;
2388#endif
2389 char *name, *lang;
2390 float f;
2391 m3d_t *model;
2392 M3D_INDEX mi;
2393#ifdef M3D_VERTEXMAX
2394 M3D_INDEX pi;
2395#endif
2396 M3D_FLOAT w;
2397 m3dcd_t *cd;
2398 m3dtx_t *tx;
2399 m3dh_t *h;
2400 m3dm_t *m;
2401 m3da_t *a;
2402 m3di_t *t;
2403#ifndef M3D_NONORMALS
2404 char neednorm = 0;
2405 m3dv_t *norm = NULL, *v0, *v1, *v2, va, vb;
2406#endif
2407#ifndef M3D_NOANIMATION
2408 M3D_FLOAT r[16];
2409#endif
2410#if !defined(M3D_NOWEIGHTS) || !defined(M3D_NOANIMATION)
2411 m3db_t *b;
2412#endif
2413#ifndef M3D_NOWEIGHTS
2414 m3ds_t *sk;
2415#endif
2416#ifdef M3D_ASCII
2417 m3ds_t s;
2418 M3D_INDEX bi[M3D_BONEMAXLEVEL+1], level;
2419 const char *ol;
2420 char *ptr, *pe, *fn;
2421#endif
2422#ifdef M3D_PROFILING
2423 struct timeval tv0, tv1, tvd;
2424 gettimeofday(&tv0, NULL);
2425#endif
2427 if(!data || (!M3D_CHUNKMAGIC(data, '3','D','M','O')
2428#ifdef M3D_ASCII
2429 && !M3D_CHUNKMAGIC(data, '3','d','m','o')
2430#endif
2431 )) return NULL;
2432 model = (m3d_t*)M3D_MALLOC(sizeof(m3d_t));
2433 if(!model) {
2434 M3D_LOG("Out of memory");
2435 return NULL;
2436 }
2437 memset(model, 0, sizeof(m3d_t));
2439 if(mtllib) {
2440 model->nummaterial = mtllib->nummaterial;
2441 model->material = mtllib->material;
2442 model->numtexture = mtllib->numtexture;
2443 model->texture = mtllib->texture;
2444 model->flags |= M3D_FLG_MTLLIB;
2445 }
2446#ifdef M3D_ASCII
2447 /* ASCII variant? */
2448 if(M3D_CHUNKMAGIC(data, '3','d','m','o')) {
2449 model->errcode = M3D_ERR_BADFILE;
2450 model->flags |= M3D_FLG_FREESTR;
2451 model->raw = (m3dhdr_t*)data;
2452 ptr = (char*)data;
2453 ol = setlocale(LC_NUMERIC, NULL);
2454 setlocale(LC_NUMERIC, "C");
2455 /* parse header. Don't use sscanf, that's incredibly slow */
2456 ptr = _m3d_findarg(ptr);
2457 if(!*ptr || *ptr == '\r' || *ptr == '\n') goto asciiend;
2458 pe = _m3d_findnl(ptr);
2459 model->scale = (float)strtod(ptr, NULL); ptr = pe;
2460 if(model->scale <= (M3D_FLOAT)0.0) model->scale = (M3D_FLOAT)1.0;
2461 model->name = _m3d_safestr(ptr, 2); ptr = _m3d_findnl(ptr);
2462 if(!*ptr) goto asciiend;
2463 model->license = _m3d_safestr(ptr, 2); ptr = _m3d_findnl(ptr);
2464 if(!*ptr) goto asciiend;
2465 model->author = _m3d_safestr(ptr, 2); ptr = _m3d_findnl(ptr);
2466 if(!*ptr) goto asciiend;
2467 if(*ptr != '\r' && *ptr != '\n')
2468 model->desc = _m3d_safestr(ptr, 3);
2469 while(*ptr) {
2470 while(*ptr && *ptr!='\n') ptr++;
2471 ptr++; if(*ptr=='\r') ptr++;
2472 if(*ptr == '\n') break;
2473 }
2475 /* the main chunk reader loop */
2476 while(*ptr) {
2477 while(*ptr && (*ptr == '\r' || *ptr == '\n')) ptr++;
2478 if(!*ptr || (ptr[0]=='E' && ptr[1]=='n' && ptr[2]=='d')) break;
2479 /* make sure there's at least one data row */
2480 pe = ptr; ptr = _m3d_findnl(ptr);
2481 if(!*ptr || *ptr == '\r' || *ptr == '\n') goto asciiend;
2482 /* Preview chunk */
2483 if(!memcmp(pe, "Preview", 7)) {
2484 if(readfilecb) {
2485 pe = _m3d_safestr(ptr, 0);
2486 if(!pe || !*pe) goto asciiend;
2487 model->preview.data = (*readfilecb)(pe, &model->preview.length);
2488 M3D_FREE(pe);
2489 }
2490 while(*ptr && *ptr != '\r' && *ptr != '\n')
2491 ptr = _m3d_findnl(ptr);
2492 } else
2493 /* texture map chunk */
2494 if(!memcmp(pe, "Textmap", 7)) {
2495 if(model->tmap) { M3D_LOG("More texture map chunks, should be unique"); goto asciiend; }
2496 while(*ptr && *ptr != '\r' && *ptr != '\n') {
2497 i = model->numtmap++;
2498 model->tmap = (m3dti_t*)M3D_REALLOC(model->tmap, model->numtmap * sizeof(m3dti_t));
2499 if(!model->tmap) goto memerr;
2500 ptr = _m3d_getfloat(ptr, &model->tmap[i].u);
2501 if(!*ptr || *ptr == '\r' || *ptr == '\n') goto asciiend;
2502 _m3d_getfloat(ptr, &model->tmap[i].v);
2503 ptr = _m3d_findnl(ptr);
2504 }
2505 } else
2506 /* vertex chunk */
2507 if(!memcmp(pe, "Vertex", 6)) {
2508 if(model->vertex) { M3D_LOG("More vertex chunks, should be unique"); goto asciiend; }
2509 while(*ptr && *ptr != '\r' && *ptr != '\n') {
2510 i = model->numvertex++;
2511 model->vertex = (m3dv_t*)M3D_REALLOC(model->vertex, model->numvertex * sizeof(m3dv_t));
2512 if(!model->vertex) goto memerr;
2513 memset(&model->vertex[i], 0, sizeof(m3dv_t));
2514 model->vertex[i].skinid = M3D_UNDEF;
2515 model->vertex[i].color = 0;
2516 model->vertex[i].w = (M3D_FLOAT)1.0;
2517 ptr = _m3d_getfloat(ptr, &model->vertex[i].x);
2518 if(!*ptr || *ptr == '\r' || *ptr == '\n') goto asciiend;
2519 ptr = _m3d_getfloat(ptr, &model->vertex[i].y);
2520 if(!*ptr || *ptr == '\r' || *ptr == '\n') goto asciiend;
2521 ptr = _m3d_getfloat(ptr, &model->vertex[i].z);
2522 if(!*ptr || *ptr == '\r' || *ptr == '\n') goto asciiend;
2523 ptr = _m3d_getfloat(ptr, &model->vertex[i].w);
2524 if(!*ptr) goto asciiend;
2525 if(*ptr == '#') {
2526 ptr = _m3d_gethex(ptr, &model->vertex[i].color);
2527 if(!*ptr) goto asciiend;
2528 }
2529 /* parse skin */
2530 memset(&s, 0, sizeof(m3ds_t));
2531 for(j = 0, w = (M3D_FLOAT)0.0; j < M3D_NUMBONE && *ptr && *ptr != '\r' && *ptr != '\n'; j++) {
2532 ptr = _m3d_findarg(ptr);
2533 if(!*ptr || *ptr == '\r' || *ptr == '\n') goto asciiend;
2534 ptr = _m3d_getint(ptr, &k);
2535 s.boneid[j] = (M3D_INDEX)k;
2536 if(*ptr == ':') {
2537 ptr++;
2538 ptr = _m3d_getfloat(ptr, &s.weight[j]);
2539 w += s.weight[j];
2540 } else if(!j)
2541 s.weight[j] = (M3D_FLOAT)1.0;
2542 if(!*ptr) goto asciiend;
2543 }
2544 if(s.boneid[0] != M3D_UNDEF && s.weight[0] > (M3D_FLOAT)0.0) {
2545 if(w != (M3D_FLOAT)1.0 && w != (M3D_FLOAT)0.0)
2546 for(j = 0; j < M3D_NUMBONE && s.weight[j] > (M3D_FLOAT)0.0; j++)
2547 s.weight[j] /= w;
2548 k = M3D_NOTDEFINED;
2549 if(model->skin) {
2550 for(j = 0; j < model->numskin; j++)
2551 if(!memcmp(&model->skin[j], &s, sizeof(m3ds_t))) { k = j; break; }
2552 }
2553 if(k == M3D_NOTDEFINED) {
2554 k = model->numskin++;
2555 model->skin = (m3ds_t*)M3D_REALLOC(model->skin, model->numskin * sizeof(m3ds_t));
2556 if(!model->skin) goto memerr;
2557 memcpy(&model->skin[k], &s, sizeof(m3ds_t));
2558 }
2559 model->vertex[i].skinid = (M3D_INDEX)k;
2560 }
2561 ptr = _m3d_findnl(ptr);
2562 }
2563 } else
2564 /* Skeleton, bone hierarchy */
2565 if(!memcmp(pe, "Bones", 5)) {
2566 if(model->bone) { M3D_LOG("More bones chunks, should be unique"); goto asciiend; }
2567 bi[0] = M3D_UNDEF;
2568 while(*ptr && *ptr != '\r' && *ptr != '\n') {
2569 i = model->numbone++;
2570 model->bone = (m3db_t*)M3D_REALLOC(model->bone, model->numbone * sizeof(m3db_t));
2571 if(!model->bone) goto memerr;
2572 for(level = 0; *ptr == '/'; ptr++, level++);
2573 if(level > M3D_BONEMAXLEVEL || !*ptr || *ptr == '\r' || *ptr == '\n') goto asciiend;
2574 bi[level+1] = i;
2575 model->bone[i].numweight = 0;
2576 model->bone[i].weight = NULL;
2577 model->bone[i].parent = bi[level];
2578 ptr = _m3d_getint(ptr, &k);
2579 ptr = _m3d_findarg(ptr);
2580 if(!*ptr || *ptr == '\r' || *ptr == '\n') goto asciiend;
2581 model->bone[i].pos = (M3D_INDEX)k;
2582 ptr = _m3d_getint(ptr, &k);
2583 ptr = _m3d_findarg(ptr);
2584 if(!*ptr || *ptr == '\r' || *ptr == '\n') goto asciiend;
2585 model->bone[i].ori = (M3D_INDEX)k;
2586 model->vertex[k].skinid = M3D_INDEXMAX;
2587 pe = _m3d_safestr(ptr, 0);
2588 if(!pe || !*pe) goto asciiend;
2589 model->bone[i].name = pe;
2590 ptr = _m3d_findnl(ptr);
2591 }
2592 } else
2593 /* material chunk */
2594 if(!memcmp(pe, "Material", 8)) {
2595 pe = _m3d_findarg(pe);
2596 if(!*pe || *pe == '\r' || *pe == '\n') goto asciiend;
2597 pe = _m3d_safestr(pe, 0);
2598 if(!pe || !*pe) goto asciiend;
2599 for(i = 0; i < model->nummaterial; i++)
2600 if(!strcmp(pe, model->material[i].name)) {
2601 M3D_LOG("Multiple definitions for material");
2602 M3D_LOG(pe);
2603 M3D_FREE(pe);
2604 pe = NULL;
2605 while(*ptr && *ptr != '\r' && *ptr != '\n') ptr = _m3d_findnl(ptr);
2606 break;
2607 }
2608 if(!pe) continue;
2609 i = model->nummaterial++;
2610 if(model->flags & M3D_FLG_MTLLIB) {
2611 m = model->material;
2612 model->material = (m3dm_t*)M3D_MALLOC(model->nummaterial * sizeof(m3dm_t));
2613 if(!model->material) goto memerr;
2614 memcpy(model->material, m, (model->nummaterial - 1) * sizeof(m3dm_t));
2615 if(model->texture) {
2616 tx = model->texture;
2617 model->texture = (m3dtx_t*)M3D_MALLOC(model->numtexture * sizeof(m3dtx_t));
2618 if(!model->texture) goto memerr;
2619 memcpy(model->texture, tx, model->numtexture * sizeof(m3dm_t));
2620 }
2621 model->flags &= ~M3D_FLG_MTLLIB;
2622 } else {
2623 model->material = (m3dm_t*)M3D_REALLOC(model->material, model->nummaterial * sizeof(m3dm_t));
2624 if(!model->material) goto memerr;
2625 }
2626 m = &model->material[i];
2627 m->name = pe;
2628 m->numprop = 0;
2629 m->prop = NULL;
2630 while(*ptr && *ptr != '\r' && *ptr != '\n') {
2631 k = n = 256;
2632 if(*ptr == 'm' && *(ptr+1) == 'a' && *(ptr+2) == 'p' && *(ptr+3) == '_') {
2633 k = m3dpf_map;
2634 ptr += 4;
2635 }
2636 for(j = 0; j < sizeof(m3d_propertytypes)/sizeof(m3d_propertytypes[0]); j++)
2637 if(!memcmp(ptr, m3d_propertytypes[j].key, strlen(m3d_propertytypes[j].key))) {
2638 n = m3d_propertytypes[j].id;
2639 if(k != m3dpf_map) k = m3d_propertytypes[j].format;
2640 break;
2641 }
2642 if(n != 256 && k != 256) {
2643 ptr = _m3d_findarg(ptr);
2644 if(!*ptr || *ptr == '\r' || *ptr == '\n') goto asciiend;
2645 j = m->numprop++;
2646 m->prop = (m3dp_t*)M3D_REALLOC(m->prop, m->numprop * sizeof(m3dp_t));
2647 if(!m->prop) goto memerr;
2648 m->prop[j].type = n + (k == m3dpf_map && n < 128 ? 128 : 0);
2649 switch(k) {
2650 case m3dpf_color: ptr = _m3d_gethex(ptr, &m->prop[j].value.color); break;
2651 case m3dpf_uint8:
2652 case m3dpf_uint16:
2653 case m3dpf_uint32: ptr = _m3d_getint(ptr, &m->prop[j].value.num); break;
2654 case m3dpf_float: ptr = _m3d_getfloat(ptr, &m->prop[j].value.fnum); break;
2655 case m3dpf_map:
2656 pe = _m3d_safestr(ptr, 0);
2657 if(!pe || !*pe) goto asciiend;
2658 m->prop[j].value.textureid = _m3d_gettx(model, readfilecb, freecb, pe);
2659 if(model->errcode == M3D_ERR_ALLOC) { M3D_FREE(pe); goto memerr; }
2660 /* this error code only returned if readfilecb was specified */
2661 if(m->prop[j].value.textureid == M3D_UNDEF) {
2662 M3D_LOG("Texture not found");
2663 M3D_LOG(pe);
2664 m->numprop--;
2665 }
2666 M3D_FREE(pe);
2667 break;
2668 }
2669 } else {
2670 M3D_LOG("Unknown material property in");
2671 M3D_LOG(m->name);
2672 model->errcode = M3D_ERR_UNKPROP;
2673 }
2674 ptr = _m3d_findnl(ptr);
2675 }
2676 if(!m->numprop) model->nummaterial--;
2677 } else
2678 /* procedural */
2679 if(!memcmp(pe, "Procedural", 10)) {
2680 pe = _m3d_safestr(ptr, 0);
2681 _m3d_getpr(model, readfilecb, freecb, pe);
2682 M3D_FREE(pe);
2683 while(*ptr && *ptr != '\r' && *ptr != '\n') ptr = _m3d_findnl(ptr);
2684 } else
2685 /* mesh */
2686 if(!memcmp(pe, "Mesh", 4)) {
2687 mi = M3D_UNDEF;
2688#ifdef M3D_VERTEXMAX
2689 pi = M3D_UNDEF;
2690#endif
2691 while(*ptr && *ptr != '\r' && *ptr != '\n') {
2692 if(*ptr == 'u') {
2693 ptr = _m3d_findarg(ptr);
2694 if(!*ptr) goto asciiend;
2695 mi = M3D_UNDEF;
2696 if(*ptr != '\r' && *ptr != '\n') {
2697 pe = _m3d_safestr(ptr, 0);
2698 if(!pe || !*pe) goto asciiend;
2699 for(j = 0; j < model->nummaterial; j++)
2700 if(!strcmp(pe, model->material[j].name)) { mi = (M3D_INDEX)j; break; }
2701 if(mi == M3D_UNDEF && !(model->flags & M3D_FLG_MTLLIB)) {
2702 mi = model->nummaterial++;
2703 model->material = (m3dm_t*)M3D_REALLOC(model->material, model->nummaterial * sizeof(m3dm_t));
2704 if(!model->material) goto memerr;
2705 model->material[mi].name = pe;
2706 model->material[mi].numprop = 1;
2707 model->material[mi].prop = NULL;
2708 } else
2709 M3D_FREE(pe);
2710 }
2711 } else
2712 if(*ptr == 'p') {
2713 ptr = _m3d_findarg(ptr);
2714 if(!*ptr) goto asciiend;
2715#ifdef M3D_VERTEXMAX
2716 pi = M3D_UNDEF;
2717 if(*ptr != '\r' && *ptr != '\n') {
2718 pe = _m3d_safestr(ptr, 0);
2719 if(!pe || !*pe) goto asciiend;
2720 for(j = 0; j < model->numparam; j++)
2721 if(!strcmp(pe, model->param[j].name)) { pi = (M3D_INDEX)j; break; }
2722 if(pi == M3D_UNDEF) {
2723 pi = model->numparam++;
2724 model->param = (m3dvi_t*)M3D_REALLOC(model->param, model->numparam * sizeof(m3dvi_t));
2725 if(!model->param) goto memerr;
2726 model->param[pi].name = pe;
2727 model->param[pi].count = 0;
2728 } else
2729 M3D_FREE(pe);
2730 }
2731#endif
2732 } else {
2733 i = model->numface++;
2734 model->face = (m3df_t*)M3D_REALLOC(model->face, model->numface * sizeof(m3df_t));
2735 if(!model->face) goto memerr;
2736 memset(&model->face[i], 255, sizeof(m3df_t)); /* set all index to -1 by default */
2737 model->face[i].materialid = mi;
2738#ifdef M3D_VERTEXMAX
2739 model->face[i].paramid = pi;
2740#endif
2741 /* hardcoded triangles. */
2742 for(j = 0; j < 3; j++) {
2743 /* vertex */
2744 ptr = _m3d_getint(ptr, &k);
2745 model->face[i].vertex[j] = (M3D_INDEX)k;
2746 if(!*ptr) goto asciiend;
2747 if(*ptr == '/') {
2748 ptr++;
2749 if(*ptr != '/') {
2750 /* texcoord */
2751 ptr = _m3d_getint(ptr, &k);
2752 model->face[i].texcoord[j] = (M3D_INDEX)k;
2753 if(!*ptr) goto asciiend;
2754 }
2755 if(*ptr == '/') {
2756 ptr++;
2757 /* normal */
2758 ptr = _m3d_getint(ptr, &k);
2759 model->face[i].normal[j] = (M3D_INDEX)k;
2760 if(!*ptr) goto asciiend;
2761 }
2762 if(*ptr == '/') {
2763 ptr++;
2764 /* maximum */
2765 ptr = _m3d_getint(ptr, &k);
2766#ifdef M3D_VERTEXMAX
2767 model->face[i].vertmax[j] = (M3D_INDEX)k;
2768#endif
2769 if(!*ptr) goto asciiend;
2770 }
2771 }
2772#ifndef M3D_NONORMALS
2773 if(model->face[i].normal[j] == M3D_UNDEF) neednorm = 1;
2774#endif
2775 ptr = _m3d_findarg(ptr);
2776 }
2777 }
2778 ptr = _m3d_findnl(ptr);
2779 }
2780 } else
2781 /* voxel types chunk */
2782 if(!memcmp(pe, "VoxTypes", 8) || !memcmp(pe, "Voxtypes", 8)) {
2783 if(model->voxtype) { M3D_LOG("More voxel types chunks, should be unique"); goto asciiend; }
2784 while(*ptr && *ptr != '\r' && *ptr != '\n') {
2785 i = model->numvoxtype++;
2786 model->voxtype = (m3dvt_t*)M3D_REALLOC(model->voxtype, model->numvoxtype * sizeof(m3dvt_t));
2787 if(!model->voxtype) goto memerr;
2788 memset(&model->voxtype[i], 0, sizeof(m3dvt_t));
2789 model->voxtype[i].materialid = M3D_UNDEF;
2790 model->voxtype[i].skinid = M3D_UNDEF;
2791 ptr = _m3d_gethex(ptr, &model->voxtype[i].color);
2792 if(!*ptr) goto asciiend;
2793 if(*ptr == '/') {
2794 ptr = _m3d_gethex(ptr, &k);
2795 model->voxtype[i].rotation = k;
2796 if(!*ptr) goto asciiend;
2797 if(*ptr == '/') {
2798 ptr = _m3d_gethex(ptr, &k);
2799 model->voxtype[i].voxshape = k;
2800 if(!*ptr) goto asciiend;
2801 }
2802 }
2803 while(*ptr == ' ' || *ptr == '\t') ptr++;
2804 if(*ptr == '\r' || *ptr == '\n') { ptr = _m3d_findnl(ptr); continue; }
2805 /* name */
2806 if(*ptr != '-') {
2807 pe = _m3d_safestr(ptr, 0);
2808 if(!pe || !*pe) goto asciiend;
2809 model->voxtype[i].name = pe;
2810 for(j = 0; j < model->nummaterial; j++)
2811 if(!strcmp(pe, model->material[j].name)) { model->voxtype[i].materialid = (M3D_INDEX)j; break; }
2812 }
2813 ptr = _m3d_findarg(ptr);
2814 /* parse skin */
2815 memset(&s, 0, sizeof(m3ds_t));
2816 for(j = 0, w = (M3D_FLOAT)0.0; j < M3D_NUMBONE && *ptr && *ptr != '{' && *ptr != '\r' && *ptr != '\n'; j++) {
2817 ptr = _m3d_getint(ptr, &k);
2818 s.boneid[j] = (M3D_INDEX)k;
2819 if(*ptr == ':') {
2820 ptr++;
2821 ptr = _m3d_getfloat(ptr, &s.weight[j]);
2822 w += s.weight[j];
2823 } else if(!j)
2824 s.weight[j] = (M3D_FLOAT)1.0;
2825 if(!*ptr) goto asciiend;
2826 ptr = _m3d_findarg(ptr);
2827 }
2828 if(s.boneid[0] != M3D_UNDEF && s.weight[0] > (M3D_FLOAT)0.0) {
2829 if(w != (M3D_FLOAT)1.0 && w != (M3D_FLOAT)0.0)
2830 for(j = 0; j < M3D_NUMBONE && s.weight[j] > (M3D_FLOAT)0.0; j++)
2831 s.weight[j] /= w;
2832 k = M3D_NOTDEFINED;
2833 if(model->skin) {
2834 for(j = 0; j < model->numskin; j++)
2835 if(!memcmp(&model->skin[j], &s, sizeof(m3ds_t))) { k = j; break; }
2836 }
2837 if(k == M3D_NOTDEFINED) {
2838 k = model->numskin++;
2839 model->skin = (m3ds_t*)M3D_REALLOC(model->skin, model->numskin * sizeof(m3ds_t));
2840 if(!model->skin) goto memerr;
2841 memcpy(&model->skin[k], &s, sizeof(m3ds_t));
2842 }
2843 model->voxtype[i].skinid = (M3D_INDEX)k;
2844 }
2845 /* parse item list */
2846 if(*ptr == '{') {
2847 while(*ptr == '{' || *ptr == ' ' || *ptr == '\t') ptr++;
2848 while(*ptr && *ptr != '}' && *ptr != '\r' && *ptr != '\n') {
2849 ptr = _m3d_getint(ptr, &k);
2850 ptr = _m3d_findarg(ptr);
2851 if(!*ptr || *ptr == '}' || *ptr == '\r' || *ptr == '\n') goto asciiend;
2852 pe = _m3d_safestr(ptr, 0);
2853 if(!pe || !*pe) goto asciiend;
2854 ptr = _m3d_findarg(ptr);
2855 j = model->voxtype[i].numitem++;
2856 model->voxtype[i].item = (m3dvi_t*)M3D_REALLOC(model->voxtype[i].item,
2857 model->voxtype[i].numitem * sizeof(m3dvi_t));
2858 if(!model->voxtype[i].item) goto memerr;
2859 model->voxtype[i].item[j].count = k;
2860 model->voxtype[i].item[j].name = pe;
2861 }
2862 if(*ptr != '}') goto asciiend;
2863 }
2864 ptr = _m3d_findnl(ptr);
2865 }
2866 } else
2867 /* voxel data */
2868 if(!memcmp(pe, "Voxel", 5)) {
2869 if(!model->voxtype) { M3D_LOG("No voxel type chunk before voxel data"); goto asciiend; }
2870 pe = _m3d_findarg(pe);
2871 if(!*pe) goto asciiend;
2872 if(*pe == '\r' || *pe == '\n') pe = NULL;
2873 else pe = _m3d_safestr(pe, 0);
2874 i = model->numvoxel++;
2875 model->voxel = (m3dvx_t*)M3D_REALLOC(model->voxel, model->numvoxel * sizeof(m3dvx_t));
2876 if(!model->voxel) goto memerr;
2877 memset(&model->voxel[i], 0, sizeof(m3dvx_t));
2878 model->voxel[i].name = pe;
2879 k = l = 0;
2880 while(*ptr && *ptr != '\r' && *ptr != '\n') {
2881 switch(*ptr) {
2882 case 'u':
2883 ptr = _m3d_findarg(ptr);
2884 if(!*ptr || *ptr == '\r' || *ptr == '\n') goto asciiend;
2885 ptr = _m3d_getint(ptr, &n);
2886 model->voxel[i].uncertain = ((n > 0 && n < 256 ? n : 0) * 255) / 100;
2887 ptr = _m3d_findarg(ptr);
2888 if(*ptr && *ptr != '\r' && *ptr != '\n') {
2889 ptr = _m3d_getint(ptr, &n);
2890 model->voxel[i].groupid = n > 0 && n < 256 ? n : 0;
2891 }
2892 break;
2893 case 'p':
2894 ptr = _m3d_findarg(ptr);
2895 if(!*ptr || *ptr == '\r' || *ptr == '\n') goto asciiend;
2896 ptr = _m3d_getint(ptr, &n);
2897 model->voxel[i].x = n;
2898 ptr = _m3d_findarg(ptr);
2899 if(!*ptr || *ptr == '\r' || *ptr == '\n') goto asciiend;
2900 ptr = _m3d_getint(ptr, &n);
2901 model->voxel[i].y = n;
2902 ptr = _m3d_findarg(ptr);
2903 if(!*ptr || *ptr == '\r' || *ptr == '\n') goto asciiend;
2904 ptr = _m3d_getint(ptr, &n);
2905 model->voxel[i].z = n;
2906 break;
2907 case 'd':
2908 ptr = _m3d_findarg(ptr);
2909 if(!*ptr || *ptr == '\r' || *ptr == '\n') goto asciiend;
2910 ptr = _m3d_getint(ptr, &n);
2911 model->voxel[i].w = n;
2912 ptr = _m3d_findarg(ptr);
2913 if(!*ptr || *ptr == '\r' || *ptr == '\n') goto asciiend;
2914 ptr = _m3d_getint(ptr, &n);
2915 model->voxel[i].h = n;
2916 ptr = _m3d_findarg(ptr);
2917 if(!*ptr || *ptr == '\r' || *ptr == '\n') goto asciiend;
2918 ptr = _m3d_getint(ptr, &n);
2919 model->voxel[i].d = n;
2920 break;
2921 case 'l':
2922 if(model->voxel[i].data) { l++; k = 0; }
2923 else {
2924 if(!model->voxel[i].w || !model->voxel[i].h || !model->voxel[i].d) {
2925 M3D_LOG("No voxel dimension before layer data");
2926 goto asciiend;
2927 }
2928 model->voxel[i].data = (M3D_VOXEL*)M3D_MALLOC(
2929 model->voxel[i].w * model->voxel[i].h * model->voxel[i].d * sizeof(M3D_VOXEL));
2930 if(!model->voxel[i].data) goto memerr;
2931 }
2932 break;
2933 default:
2934 if(!model->voxel[i].data || l >= model->voxel[i].h || k >= model->voxel[i].d) {
2935 M3D_LOG("Missing voxel attributes or out of bound data");
2936 goto asciiend;
2937 }
2938 for(n = l * model->voxel[i].w * model->voxel[i].d + k * model->voxel[i].w;
2939 j < model->voxel[i].w && *ptr && *ptr != '\r' && *ptr != '\n'; j++) {
2940 ptr = _m3d_getint(ptr, &am);
2941 if(am >= model->numvoxtype) goto asciiend;
2942 model->voxel[i].data[n + j] = am;
2943 }
2944 k++;
2945 break;
2946 }
2947 ptr = _m3d_findnl(ptr);
2948 }
2949 } else
2950 /* mathematical shape */
2951 if(!memcmp(pe, "Shape", 5)) {
2952 pe = _m3d_findarg(pe);
2953 if(!*pe || *pe == '\r' || *pe == '\n') goto asciiend;
2954 pe = _m3d_safestr(pe, 0);
2955 if(!pe || !*pe) goto asciiend;
2956 i = model->numshape++;
2957 model->shape = (m3dh_t*)M3D_REALLOC(model->shape, model->numshape * sizeof(m3ds_t));
2958 if(!model->shape) goto memerr;
2959 h = &model->shape[i];
2960 h->name = pe;
2961 h->group = M3D_UNDEF;
2962 h->numcmd = 0;
2963 h->cmd = NULL;
2964 while(*ptr && *ptr != '\r' && *ptr != '\n') {
2965 if(!memcmp(ptr, "group", 5)) {
2966 ptr = _m3d_findarg(ptr);
2967 ptr = _m3d_getint(ptr, &h->group);
2968 ptr = _m3d_findnl(ptr);
2969 if(h->group != M3D_UNDEF && h->group >= model->numbone) {
2970 M3D_LOG("Unknown bone id as shape group in shape");
2971 M3D_LOG(pe);
2972 h->group = M3D_UNDEF;
2973 model->errcode = M3D_ERR_SHPE;
2974 }
2975 continue;
2976 }
2977 for(cd = NULL, k = 0; k < (unsigned int)(sizeof(m3d_commandtypes)/sizeof(m3d_commandtypes[0])); k++) {
2978 j = (unsigned int)strlen(m3d_commandtypes[k].key);
2979 if(!memcmp(ptr, m3d_commandtypes[k].key, j) && (ptr[j] == ' ' || ptr[j] == '\r' || ptr[j] == '\n'))
2980 { cd = &m3d_commandtypes[k]; break; }
2981 }
2982 if(cd) {
2983 j = h->numcmd++;
2984 h->cmd = (m3dc_t*)M3D_REALLOC(h->cmd, h->numcmd * sizeof(m3dc_t));
2985 if(!h->cmd) goto memerr;
2986 h->cmd[j].type = k;
2987 h->cmd[j].arg = (uint32_t*)M3D_MALLOC(cd->p * sizeof(uint32_t));
2988 if(!h->cmd[j].arg) goto memerr;
2989 memset(h->cmd[j].arg, 0, cd->p * sizeof(uint32_t));
2990 for(k = n = 0, l = cd->p; k < l; k++) {
2991 ptr = _m3d_findarg(ptr);
2992 if(!*ptr) goto asciiend;
2993 if(*ptr == '[') {
2994 ptr = _m3d_findarg(ptr + 1);
2995 if(!*ptr) goto asciiend;
2996 }
2997 if(*ptr == ']' || *ptr == '\r' || *ptr == '\n') break;
2998 switch(cd->a[((k - n) % (cd->p - n)) + n]) {
2999 case m3dcp_mi_t:
3000 mi = M3D_UNDEF;
3001 if(*ptr != '\r' && *ptr != '\n') {
3002 pe = _m3d_safestr(ptr, 0);
3003 if(!pe || !*pe) goto asciiend;
3004 for(n = 0; n < model->nummaterial; n++)
3005 if(!strcmp(pe, model->material[n].name)) { mi = (M3D_INDEX)n; break; }
3006 if(mi == M3D_UNDEF && !(model->flags & M3D_FLG_MTLLIB)) {
3007 mi = model->nummaterial++;
3008 model->material = (m3dm_t*)M3D_REALLOC(model->material,
3009 model->nummaterial * sizeof(m3dm_t));
3010 if(!model->material) goto memerr;
3011 model->material[mi].name = pe;
3012 model->material[mi].numprop = 1;
3013 model->material[mi].prop = NULL;
3014 } else
3015 M3D_FREE(pe);
3016 }
3017 h->cmd[j].arg[k] = mi;
3018 break;
3019 case m3dcp_vc_t:
3020#ifdef M3D_DOUBLE
3021 _m3d_getfloat(ptr, &w); f = w;
3022 memcpy(&h->cmd[j].arg[k], &f, 4);
3023#else
3024 _m3d_getfloat(ptr, (float*)&h->cmd[j].arg[k]);
3025#endif
3026 break;
3027 case m3dcp_va_t:
3028 ptr = _m3d_getint(ptr, &h->cmd[j].arg[k]);
3029 n = k + 1; l += (h->cmd[j].arg[k] - 1) * (cd->p - k - 1);
3030 h->cmd[j].arg = (uint32_t*)M3D_REALLOC(h->cmd[j].arg, l * sizeof(uint32_t));
3031 if(!h->cmd[j].arg) goto memerr;
3032 memset(&h->cmd[j].arg[k + 1], 0, (l - k - 1) * sizeof(uint32_t));
3033 break;
3034 case m3dcp_qi_t:
3035 ptr = _m3d_getint(ptr, &h->cmd[j].arg[k]);
3036 model->vertex[h->cmd[i].arg[k]].skinid = M3D_INDEXMAX;
3037 break;
3038 default:
3039 ptr = _m3d_getint(ptr, &h->cmd[j].arg[k]);
3040 break;
3041 }
3042 }
3043 } else {
3044 M3D_LOG("Unknown shape command in");
3045 M3D_LOG(h->name);
3046 model->errcode = M3D_ERR_UNKCMD;
3047 }
3048 ptr = _m3d_findnl(ptr);
3049 }
3050 if(!h->numcmd) model->numshape--;
3051 } else
3052 /* annotation labels */
3053 if(!memcmp(pe, "Labels", 6)) {
3054 pe = _m3d_findarg(pe);
3055 if(!*pe) goto asciiend;
3056 if(*pe == '\r' || *pe == '\n') pe = NULL;
3057 else pe = _m3d_safestr(pe, 0);
3058 k = 0; fn = NULL;
3059 while(*ptr && *ptr != '\r' && *ptr != '\n') {
3060 if(*ptr == 'c') {
3061 ptr = _m3d_findarg(ptr);
3062 if(!*pe || *pe == '\r' || *pe == '\n') goto asciiend;
3063 ptr = _m3d_gethex(ptr, &k);
3064 } else
3065 if(*ptr == 'l') {
3066 ptr = _m3d_findarg(ptr);
3067 if(!*pe || *pe == '\r' || *pe == '\n') goto asciiend;
3068 fn = _m3d_safestr(ptr, 2);
3069 } else {
3070 i = model->numlabel++;
3071 model->label = (m3dl_t*)M3D_REALLOC(model->label, model->numlabel * sizeof(m3dl_t));
3072 if(!model->label) goto memerr;
3073 model->label[i].name = pe;
3074 model->label[i].lang = fn;
3075 model->label[i].color = k;
3076 ptr = _m3d_getint(ptr, &j);
3077 model->label[i].vertexid = (M3D_INDEX)j;
3078 ptr = _m3d_findarg(ptr);
3079 if(!*pe || *pe == '\r' || *pe == '\n') goto asciiend;
3080 model->label[i].text = _m3d_safestr(ptr, 2);
3081 }
3082 ptr = _m3d_findnl(ptr);
3083 }
3084 } else
3085 /* action */
3086 if(!memcmp(pe, "Action", 6)) {
3087 pe = _m3d_findarg(pe);
3088 if(!*pe || *pe == '\r' || *pe == '\n') goto asciiend;
3089 pe = _m3d_getint(pe, &k);
3090 pe = _m3d_findarg(pe);
3091 if(!*pe || *pe == '\r' || *pe == '\n') goto asciiend;
3092 pe = _m3d_safestr(pe, 0);
3093 if(!pe || !*pe) goto asciiend;
3094 i = model->numaction++;
3095 model->action = (m3da_t*)M3D_REALLOC(model->action, model->numaction * sizeof(m3da_t));
3096 if(!model->action) goto memerr;
3097 a = &model->action[i];
3098 a->name = pe;
3099 a->durationmsec = k;
3100 /* skip the first frame marker as there's always at least one frame */
3101 a->numframe = 1;
3102 a->frame = (m3dfr_t*)M3D_MALLOC(sizeof(m3dfr_t));
3103 if(!a->frame) goto memerr;
3104 a->frame[0].msec = 0;
3105 a->frame[0].numtransform = 0;
3106 a->frame[0].transform = NULL;
3107 i = 0;
3108 if(*ptr == 'f')
3109 ptr = _m3d_findnl(ptr);
3110 while(*ptr && *ptr != '\r' && *ptr != '\n') {
3111 if(*ptr == 'f') {
3112 i = a->numframe++;
3113 a->frame = (m3dfr_t*)M3D_REALLOC(a->frame, a->numframe * sizeof(m3dfr_t));
3114 if(!a->frame) goto memerr;
3115 ptr = _m3d_findarg(ptr);
3116 ptr = _m3d_getint(ptr, &a->frame[i].msec);
3117 a->frame[i].numtransform = 0;
3118 a->frame[i].transform = NULL;
3119 } else {
3120 j = a->frame[i].numtransform++;
3121 a->frame[i].transform = (m3dtr_t*)M3D_REALLOC(a->frame[i].transform,
3122 a->frame[i].numtransform * sizeof(m3dtr_t));
3123 if(!a->frame[i].transform) goto memerr;
3124 ptr = _m3d_getint(ptr, &k);
3125 ptr = _m3d_findarg(ptr);
3126 if(!*ptr || *ptr == '\r' || *ptr == '\n') goto asciiend;
3127 a->frame[i].transform[j].boneid = (M3D_INDEX)k;
3128 ptr = _m3d_getint(ptr, &k);
3129 ptr = _m3d_findarg(ptr);
3130 if(!*ptr || *ptr == '\r' || *ptr == '\n') goto asciiend;
3131 a->frame[i].transform[j].pos = (M3D_INDEX)k;
3132 ptr = _m3d_getint(ptr, &k);
3133 if(!*ptr || *ptr == '\r' || *ptr == '\n') goto asciiend;
3134 a->frame[i].transform[j].ori = (M3D_INDEX)k;
3135 model->vertex[k].skinid = M3D_INDEXMAX;
3136 }
3137 ptr = _m3d_findnl(ptr);
3138 }
3139 } else
3140 /* inlined assets chunk */
3141 if(!memcmp(pe, "Assets", 6)) {
3142 while(*ptr && *ptr != '\r' && *ptr != '\n') {
3143 if(readfilecb) {
3144 pe = _m3d_safestr(ptr, 2);
3145 if(!pe || !*pe) goto asciiend;
3146 i = model->numinlined++;
3147 model->inlined = (m3di_t*)M3D_REALLOC(model->inlined, model->numinlined * sizeof(m3di_t));
3148 if(!model->inlined) goto memerr;
3149 t = &model->inlined[i];
3150 model->inlined[i].data = (*readfilecb)(pe, &model->inlined[i].length);
3151 if(model->inlined[i].data) {
3152 fn = strrchr(pe, '.');
3153 if(fn && (fn[1] == 'p' || fn[1] == 'P') && (fn[2] == 'n' || fn[2] == 'N') &&
3154 (fn[3] == 'g' || fn[3] == 'G')) *fn = 0;
3155 fn = strrchr(pe, '/');
3156 if(!fn) fn = strrchr(pe, '\\');
3157 if(!fn) fn = pe; else fn++;
3158 model->inlined[i].name = _m3d_safestr(fn, 0);
3159 } else
3160 model->numinlined--;
3161 M3D_FREE(pe);
3162 }
3163 ptr = _m3d_findnl(ptr);
3164 }
3165 } else
3166 /* extra chunks */
3167 if(!memcmp(pe, "Extra", 5)) {
3168 pe = _m3d_findarg(pe);
3169 if(!*pe || *pe == '\r' || *pe == '\n') goto asciiend;
3170 buff = (unsigned char*)_m3d_findnl(ptr);
3171 k = ((uint32_t)((uintptr_t)buff - (uintptr_t)ptr) / 3) + 1;
3172 i = model->numextra++;
3173 model->extra = (m3dchunk_t**)M3D_REALLOC(model->extra, model->numextra * sizeof(m3dchunk_t*));
3174 if(!model->extra) goto memerr;
3175 model->extra[i] = (m3dchunk_t*)M3D_MALLOC(k + sizeof(m3dchunk_t));
3176 if(!model->extra[i]) goto memerr;
3177 memcpy(&model->extra[i]->magic, pe, 4);
3178 model->extra[i]->length = sizeof(m3dchunk_t);
3179 pe = (char*)model->extra[i] + sizeof(m3dchunk_t);
3180 while(*ptr && *ptr != '\r' && *ptr != '\n') {
3181 ptr = _m3d_gethex(ptr, &k);
3182 *pe++ = (uint8_t)k;
3183 model->extra[i]->length++;
3184 }
3185 } else
3186 goto asciiend;
3187 }
3188 model->errcode = M3D_SUCCESS;
3189asciiend:
3190 setlocale(LC_NUMERIC, ol);
3191 goto postprocess;
3192 }
3193#endif
3194 /* Binary variant */
3195 len = ((m3dhdr_t*)data)->length - 8;
3196 data += 8;
3197 if(M3D_CHUNKMAGIC(data, 'P','R','V','W')) {
3198 /* optional preview chunk */
3199 model->preview.length = ((m3dchunk_t*)data)->length;
3200 model->preview.data = data + sizeof(m3dchunk_t);
3201 data += model->preview.length;
3202 len -= model->preview.length;
3203 }
3204 if(!M3D_CHUNKMAGIC(data, 'H','E','A','D')) {
3205 buff = (unsigned char *)stbi_zlib_decode_malloc_guesssize_headerflag((const char*)data, len, 4096, (int*)&len, 1);
3206 if(!buff || !len || !M3D_CHUNKMAGIC(buff, 'H','E','A','D')) {
3207 if(buff) M3D_FREE(buff);
3208 M3D_FREE(model);
3209 return NULL;
3210 }
3211 buff = (unsigned char*)M3D_REALLOC(buff, len);
3212 model->flags |= M3D_FLG_FREERAW; /* mark that we have to free the raw buffer */
3213 data = buff;
3214#ifdef M3D_PROFILING
3215 gettimeofday(&tv1, NULL);
3216 tvd.tv_sec = tv1.tv_sec - tv0.tv_sec;
3217 tvd.tv_usec = tv1.tv_usec - tv0.tv_usec;
3218 if(tvd.tv_usec < 0) { tvd.tv_sec--; tvd.tv_usec += 1000000L; }
3219 printf(" Deflate model %ld.%06ld sec\n", tvd.tv_sec, tvd.tv_usec);
3220 memcpy(&tv0, &tv1, sizeof(struct timeval));
3221#endif
3222 }
3223 model->raw = (m3dhdr_t*)data;
3224 end = data + len;
3226 /* parse header */
3227 data += sizeof(m3dhdr_t);
3228 M3D_LOG((char*)data);
3229 model->name = (char*)data;
3230 for(; data < end && *data; data++) {}; data++;
3231 model->license = (char*)data;
3232 for(; data < end && *data; data++) {}; data++;
3233 model->author = (char*)data;
3234 for(; data < end && *data; data++) {}; data++;
3235 model->desc = (char*)data;
3236 chunk = (unsigned char*)model->raw + model->raw->length;
3237 model->scale = (M3D_FLOAT)model->raw->scale;
3238 if(model->scale <= (M3D_FLOAT)0.0) model->scale = (M3D_FLOAT)1.0;
3239 model->vc_s = 1 << ((model->raw->types >> 0) & 3); /* vertex coordinate size */
3240 model->vi_s = 1 << ((model->raw->types >> 2) & 3); /* vertex index size */
3241 model->si_s = 1 << ((model->raw->types >> 4) & 3); /* string offset size */
3242 model->ci_s = 1 << ((model->raw->types >> 6) & 3); /* color index size */
3243 model->ti_s = 1 << ((model->raw->types >> 8) & 3); /* tmap index size */
3244 model->bi_s = 1 << ((model->raw->types >>10) & 3); /* bone index size */
3245 model->nb_s = 1 << ((model->raw->types >>12) & 3); /* number of bones per vertex */
3246 model->sk_s = 1 << ((model->raw->types >>14) & 3); /* skin index size */
3247 model->fc_s = 1 << ((model->raw->types >>16) & 3); /* frame counter size */
3248 model->hi_s = 1 << ((model->raw->types >>18) & 3); /* shape index size */
3249 model->fi_s = 1 << ((model->raw->types >>20) & 3); /* face index size */
3250 model->vd_s = 1 << ((model->raw->types >>22) & 3); /* voxel dimension size */
3251 model->vp_s = 1 << ((model->raw->types >>24) & 3); /* voxel pixel size */
3252 if(model->ci_s == 8) model->ci_s = 0; /* optional indices */
3253 if(model->ti_s == 8) model->ti_s = 0;
3254 if(model->bi_s == 8) model->bi_s = 0;
3255 if(model->sk_s == 8) model->sk_s = 0;
3256 if(model->fc_s == 8) model->fc_s = 0;
3257 if(model->hi_s == 8) model->hi_s = 0;
3258 if(model->fi_s == 8) model->fi_s = 0;
3260 /* variable limit checks */
3261 if(sizeof(M3D_FLOAT) == 4 && model->vc_s > 4) {
3262 M3D_LOG("Double precision coordinates not supported, truncating to float...");
3263 model->errcode = M3D_ERR_TRUNC;
3264 }
3265 if((sizeof(M3D_INDEX) == 2 && (model->vi_s > 2 || model->si_s > 2 || model->ci_s > 2 || model->ti_s > 2 ||
3266 model->bi_s > 2 || model->sk_s > 2 || model->fc_s > 2 || model->hi_s > 2 || model->fi_s > 2)) ||
3267 (sizeof(M3D_VOXEL) < (size_t)model->vp_s && model->vp_s != 8)) {
3268 M3D_LOG("32 bit indices not supported, unable to load model");
3269 M3D_FREE(model);
3270 return NULL;
3271 }
3272 if(model->vi_s > 4 || model->si_s > 4 || model->vp_s == 4) {
3273 M3D_LOG("Invalid index size, unable to load model");
3274 M3D_FREE(model);
3275 return NULL;
3276 }
3277 if(!M3D_CHUNKMAGIC(end - 4, 'O','M','D','3')) {
3278 M3D_LOG("Missing end chunk");
3279 M3D_FREE(model);
3280 return NULL;
3281 }
3282 if(model->nb_s > M3D_NUMBONE) {
3283 M3D_LOG("Model has more bones per vertex than what importer was configured to support");
3284 model->errcode = M3D_ERR_TRUNC;
3285 }
3287 /* look for inlined assets in advance, material and procedural chunks may need them */
3288 buff = chunk;
3289 while(buff < end && !M3D_CHUNKMAGIC(buff, 'O','M','D','3')) {
3290 data = buff;
3291 len = ((m3dchunk_t*)data)->length;
3292 buff += len;
3293 if(len < sizeof(m3dchunk_t) || buff >= end) {
3294 M3D_LOG("Invalid chunk size");
3295 break;
3296 }
3297 len -= sizeof(m3dchunk_t) + model->si_s;
3299 /* inlined assets */
3300 if(M3D_CHUNKMAGIC(data, 'A','S','E','T') && len > 0) {
3301 M3D_LOG("Inlined asset");
3302 i = model->numinlined++;
3303 model->inlined = (m3di_t*)M3D_REALLOC(model->inlined, model->numinlined * sizeof(m3di_t));
3304 if(!model->inlined) {
3305memerr: M3D_LOG("Out of memory");
3306 model->errcode = M3D_ERR_ALLOC;
3307 return model;
3308 }
3309 data += sizeof(m3dchunk_t);
3310 t = &model->inlined[i];
3311 M3D_GETSTR(t->name);
3312 M3D_LOG(t->name);
3313 t->data = (uint8_t*)data;
3314 t->length = len;
3315 }
3316 }
3318 /* parse chunks */
3319 while(chunk < end && !M3D_CHUNKMAGIC(chunk, 'O','M','D','3')) {
3320 data = chunk;
3321 len = ((m3dchunk_t*)chunk)->length;
3322 chunk += len;
3323 if(len < sizeof(m3dchunk_t) || chunk >= end) {
3324 M3D_LOG("Invalid chunk size");
3325 break;
3326 }
3327 len -= sizeof(m3dchunk_t);
3329 /* color map */
3330 if(M3D_CHUNKMAGIC(data, 'C','M','A','P')) {
3331 M3D_LOG("Color map");
3332 if(model->cmap) { M3D_LOG("More color map chunks, should be unique"); model->errcode = M3D_ERR_CMAP; continue; }
3333 if(!model->ci_s) { M3D_LOG("Color map chunk, shouldn't be any"); model->errcode = M3D_ERR_CMAP; continue; }
3334 model->numcmap = len / sizeof(uint32_t);
3335 model->cmap = (uint32_t*)(data + sizeof(m3dchunk_t));
3336 } else
3337 /* texture map */
3338 if(M3D_CHUNKMAGIC(data, 'T','M','A','P')) {
3339 M3D_LOG("Texture map");
3340 if(model->tmap) { M3D_LOG("More texture map chunks, should be unique"); model->errcode = M3D_ERR_TMAP; continue; }
3341 if(!model->ti_s) { M3D_LOG("Texture map chunk, shouldn't be any"); model->errcode = M3D_ERR_TMAP; continue; }
3342 reclen = model->vc_s + model->vc_s;
3343 model->numtmap = len / reclen;
3344 model->tmap = (m3dti_t*)M3D_MALLOC(model->numtmap * sizeof(m3dti_t));
3345 if(!model->tmap) goto memerr;
3346 for(i = 0, data += sizeof(m3dchunk_t); data < chunk; i++) {
3347 switch(model->vc_s) {
3348 case 1:
3349 model->tmap[i].u = (M3D_FLOAT)((uint8_t)data[0]) / (M3D_FLOAT)255.0;
3350 model->tmap[i].v = (M3D_FLOAT)((uint8_t)data[1]) / (M3D_FLOAT)255.0;
3351 break;
3352 case 2:
3353 model->tmap[i].u = (M3D_FLOAT)(*((uint16_t*)(data+0))) / (M3D_FLOAT)65535.0;
3354 model->tmap[i].v = (M3D_FLOAT)(*((uint16_t*)(data+2))) / (M3D_FLOAT)65535.0;
3355 break;
3356 case 4:
3357 model->tmap[i].u = (M3D_FLOAT)(*((float*)(data+0)));
3358 model->tmap[i].v = (M3D_FLOAT)(*((float*)(data+4)));
3359 break;
3360 case 8:
3361 model->tmap[i].u = (M3D_FLOAT)(*((double*)(data+0)));
3362 model->tmap[i].v = (M3D_FLOAT)(*((double*)(data+8)));
3363 break;
3364 }
3365 data += reclen;
3366 }
3367 } else
3368 /* vertex list */
3369 if(M3D_CHUNKMAGIC(data, 'V','R','T','S')) {
3370 M3D_LOG("Vertex list");
3371 if(model->vertex) { M3D_LOG("More vertex chunks, should be unique"); model->errcode = M3D_ERR_VRTS; continue; }
3372 if(model->ci_s && model->ci_s < 4 && !model->cmap) model->errcode = M3D_ERR_CMAP;
3373 reclen = model->ci_s + model->sk_s + 4 * model->vc_s;
3374 model->numvertex = len / reclen;
3375 model->vertex = (m3dv_t*)M3D_MALLOC(model->numvertex * sizeof(m3dv_t));
3376 if(!model->vertex) goto memerr;
3377 memset(model->vertex, 0, model->numvertex * sizeof(m3dv_t));
3378 for(i = 0, data += sizeof(m3dchunk_t); data < chunk && i < model->numvertex; i++) {
3379 switch(model->vc_s) {
3380 case 1:
3381 model->vertex[i].x = (M3D_FLOAT)((int8_t)data[0]) / (M3D_FLOAT)127.0;
3382 model->vertex[i].y = (M3D_FLOAT)((int8_t)data[1]) / (M3D_FLOAT)127.0;
3383 model->vertex[i].z = (M3D_FLOAT)((int8_t)data[2]) / (M3D_FLOAT)127.0;
3384 model->vertex[i].w = (M3D_FLOAT)((int8_t)data[3]) / (M3D_FLOAT)127.0;
3385 data += 4;
3386 break;
3387 case 2:
3388 model->vertex[i].x = (M3D_FLOAT)(*((int16_t*)(data+0))) / (M3D_FLOAT)32767.0;
3389 model->vertex[i].y = (M3D_FLOAT)(*((int16_t*)(data+2))) / (M3D_FLOAT)32767.0;
3390 model->vertex[i].z = (M3D_FLOAT)(*((int16_t*)(data+4))) / (M3D_FLOAT)32767.0;
3391 model->vertex[i].w = (M3D_FLOAT)(*((int16_t*)(data+6))) / (M3D_FLOAT)32767.0;
3392 data += 8;
3393 break;
3394 case 4:
3395 model->vertex[i].x = (M3D_FLOAT)(*((float*)(data+0)));
3396 model->vertex[i].y = (M3D_FLOAT)(*((float*)(data+4)));
3397 model->vertex[i].z = (M3D_FLOAT)(*((float*)(data+8)));
3398 model->vertex[i].w = (M3D_FLOAT)(*((float*)(data+12)));
3399 data += 16;
3400 break;
3401 case 8:
3402 model->vertex[i].x = (M3D_FLOAT)(*((double*)(data+0)));
3403 model->vertex[i].y = (M3D_FLOAT)(*((double*)(data+8)));
3404 model->vertex[i].z = (M3D_FLOAT)(*((double*)(data+16)));
3405 model->vertex[i].w = (M3D_FLOAT)(*((double*)(data+24)));
3406 data += 32;
3407 break;
3408 }
3409 switch(model->ci_s) {
3410 case 1: model->vertex[i].color = model->cmap ? model->cmap[data[0]] : 0; data++; break;
3411 case 2: model->vertex[i].color = model->cmap ? model->cmap[*((uint16_t*)data)] : 0; data += 2; break;
3412 case 4: model->vertex[i].color = *((uint32_t*)data); data += 4; break;
3413 /* case 8: break; */
3414 }
3415 model->vertex[i].skinid = M3D_UNDEF;
3416 data = _m3d_getidx(data, model->sk_s, &model->vertex[i].skinid);
3417 }
3418 } else
3419 /* skeleton: bone hierarchy and skin */
3420 if(M3D_CHUNKMAGIC(data, 'B','O','N','E')) {
3421 M3D_LOG("Skeleton");
3422 if(model->bone) { M3D_LOG("More bone chunks, should be unique"); model->errcode = M3D_ERR_BONE; continue; }
3423 if(!model->bi_s) { M3D_LOG("Bone chunk, shouldn't be any"); model->errcode=M3D_ERR_BONE; continue; }
3424 if(!model->vertex) { M3D_LOG("No vertex chunk before bones"); model->errcode = M3D_ERR_VRTS; break; }
3425 data += sizeof(m3dchunk_t);
3426 model->numbone = 0;
3427 data = _m3d_getidx(data, model->bi_s, &model->numbone);
3428 if(model->numbone) {
3429 model->bone = (m3db_t*)M3D_MALLOC(model->numbone * sizeof(m3db_t));
3430 if(!model->bone) goto memerr;
3431 }
3432 model->numskin = 0;
3433 data = _m3d_getidx(data, model->sk_s, &model->numskin);
3434 /* read bone hierarchy */
3435 for(i = 0; data < chunk && i < model->numbone; i++) {
3436 data = _m3d_getidx(data, model->bi_s, &model->bone[i].parent);
3437 M3D_GETSTR(model->bone[i].name);
3438 data = _m3d_getidx(data, model->vi_s, &model->bone[i].pos);
3439 data = _m3d_getidx(data, model->vi_s, &model->bone[i].ori);
3440 model->bone[i].numweight = 0;
3441 model->bone[i].weight = NULL;
3442 }
3443 if(i != model->numbone) { M3D_LOG("Truncated bone chunk"); model->numbone = i; model->numskin = 0; model->errcode = M3D_ERR_BONE; }
3444 /* read skin definitions */
3445 if(model->numskin) {
3446 model->skin = (m3ds_t*)M3D_MALLOC(model->numskin * sizeof(m3ds_t));
3447 if(!model->skin) goto memerr;
3448 for(i = 0; data < chunk && i < model->numskin; i++) {
3449 for(j = 0; j < M3D_NUMBONE; j++) {
3450 model->skin[i].boneid[j] = M3D_UNDEF;
3451 model->skin[i].weight[j] = (M3D_FLOAT)0.0;
3452 }
3453 memset(&weights, 0, sizeof(weights));
3454 if(model->nb_s == 1) weights[0] = 255;
3455 else {
3456 memcpy(&weights, data, model->nb_s);
3457 data += model->nb_s;
3458 }
3459 for(j = 0, w = (M3D_FLOAT)0.0; j < (unsigned int)model->nb_s; j++) {
3460 if(weights[j]) {
3461 if(j >= M3D_NUMBONE)
3462 data += model->bi_s;
3463 else {
3464 model->skin[i].weight[j] = (M3D_FLOAT)(weights[j]) / (M3D_FLOAT)255.0;
3465 w += model->skin[i].weight[j];
3466 data = _m3d_getidx(data, model->bi_s, &model->skin[i].boneid[j]);
3467 }
3468 }
3469 }
3470 /* this can occur if model has more bones than what the importer is configured to handle */
3471 if(w != (M3D_FLOAT)1.0 && w != (M3D_FLOAT)0.0) {
3472 for(j = 0; j < M3D_NUMBONE; j++)
3473 model->skin[i].weight[j] /= w;
3474 }
3475 }
3476 if(i != model->numskin) { M3D_LOG("Truncated skin in bone chunk"); model->numskin = i; model->errcode = M3D_ERR_BONE; }
3477 }
3478 } else
3479 /* material */
3480 if(M3D_CHUNKMAGIC(data, 'M','T','R','L')) {
3481 data += sizeof(m3dchunk_t);
3482 M3D_GETSTR(name);
3483 M3D_LOG("Material");
3484 M3D_LOG(name);
3485 if(model->ci_s < 4 && !model->numcmap) model->errcode = M3D_ERR_CMAP;
3486 for(i = 0; i < model->nummaterial; i++)
3487 if(!strcmp(name, model->material[i].name)) {
3488 model->errcode = M3D_ERR_MTRL;
3489 M3D_LOG("Multiple definitions for material");
3490 M3D_LOG(name);
3491 name = NULL;
3492 break;
3493 }
3494 if(name) {
3495 i = model->nummaterial++;
3496 if(model->flags & M3D_FLG_MTLLIB) {
3497 m = model->material;
3498 model->material = (m3dm_t*)M3D_MALLOC(model->nummaterial * sizeof(m3dm_t));
3499 if(!model->material) goto memerr;
3500 memcpy(model->material, m, (model->nummaterial - 1) * sizeof(m3dm_t));
3501 if(model->texture) {
3502 tx = model->texture;
3503 model->texture = (m3dtx_t*)M3D_MALLOC(model->numtexture * sizeof(m3dtx_t));
3504 if(!model->texture) goto memerr;
3505 memcpy(model->texture, tx, model->numtexture * sizeof(m3dm_t));
3506 }
3507 model->flags &= ~M3D_FLG_MTLLIB;
3508 } else {
3509 model->material = (m3dm_t*)M3D_REALLOC(model->material, model->nummaterial * sizeof(m3dm_t));
3510 if(!model->material) goto memerr;
3511 }
3512 m = &model->material[i];
3513 m->numprop = 0;
3514 m->name = name;
3515 m->prop = (m3dp_t*)M3D_MALLOC((len / 2) * sizeof(m3dp_t));
3516 if(!m->prop) goto memerr;
3517 while(data < chunk) {
3518 i = m->numprop++;
3519 m->prop[i].type = *data++;
3520 m->prop[i].value.num = 0;
3521 if(m->prop[i].type >= 128)
3522 k = m3dpf_map;
3523 else {
3524 for(k = 256, j = 0; j < sizeof(m3d_propertytypes)/sizeof(m3d_propertytypes[0]); j++)
3525 if(m->prop[i].type == m3d_propertytypes[j].id) { k = m3d_propertytypes[j].format; break; }
3526 }
3527 switch(k) {
3528 case m3dpf_color:
3529 switch(model->ci_s) {
3530 case 1: m->prop[i].value.color = model->cmap ? model->cmap[data[0]] : 0; data++; break;
3531 case 2: m->prop[i].value.color = model->cmap ? model->cmap[*((uint16_t*)data)] : 0; data += 2; break;
3532 case 4: m->prop[i].value.color = *((uint32_t*)data); data += 4; break;
3533 }
3534 break;
3536 case m3dpf_uint8: m->prop[i].value.num = *data++; break;
3537 case m3dpf_uint16:m->prop[i].value.num = *((uint16_t*)data); data += 2; break;
3538 case m3dpf_uint32:m->prop[i].value.num = *((uint32_t*)data); data += 4; break;
3539 case m3dpf_float: m->prop[i].value.fnum = *((float*)data); data += 4; break;
3541 case m3dpf_map:
3542 M3D_GETSTR(name);
3543 m->prop[i].value.textureid = _m3d_gettx(model, readfilecb, freecb, name);
3544 if(model->errcode == M3D_ERR_ALLOC) goto memerr;
3545 /* this error code only returned if readfilecb was specified */
3546 if(m->prop[i].value.textureid == M3D_UNDEF) {
3547 M3D_LOG("Texture not found");
3548 M3D_LOG(m->name);
3549 m->numprop--;
3550 }
3551 break;
3553 default:
3554 M3D_LOG("Unknown material property in");
3555 M3D_LOG(m->name);
3556 model->errcode = M3D_ERR_UNKPROP;
3557 data = chunk;
3558 break;
3559 }
3560 }
3561 m->prop = (m3dp_t*)M3D_REALLOC(m->prop, m->numprop * sizeof(m3dp_t));
3562 if(!m->prop) goto memerr;
3563 }
3564 } else
3565 /* face */
3566 if(M3D_CHUNKMAGIC(data, 'P','R','O','C')) {
3567 /* procedural surface */
3568 M3D_GETSTR(name);
3569 M3D_LOG("Procedural surface");
3570 M3D_LOG(name);
3571 _m3d_getpr(model, readfilecb, freecb, name);
3572 } else
3573 if(M3D_CHUNKMAGIC(data, 'M','E','S','H')) {
3574 M3D_LOG("Mesh data");
3575 if(!model->vertex) { M3D_LOG("No vertex chunk before mesh"); model->errcode = M3D_ERR_VRTS; }
3576 /* mesh */
3577 data += sizeof(m3dchunk_t);
3578 mi = M3D_UNDEF;
3579#ifdef M3D_VERTEXMAX
3580 pi = M3D_UNDEF;
3581#endif
3582 am = model->numface;
3583 while(data < chunk) {
3584 k = *data++;
3585 n = k >> 4;
3586 k &= 15;
3587 if(!n) {
3588 if(!k) {
3589 /* use material */
3590 mi = M3D_UNDEF;
3591 M3D_GETSTR(name);
3592 if(name) {
3593 for(j = 0; j < model->nummaterial; j++)
3594 if(!strcmp(name, model->material[j].name)) {
3595 mi = (M3D_INDEX)j;
3596 break;
3597 }
3598 if(mi == M3D_UNDEF) model->errcode = M3D_ERR_MTRL;
3599 }
3600 } else {
3601 /* use parameter */
3602 M3D_GETSTR(name);
3603#ifdef M3D_VERTEXMAX
3604 pi = M3D_UNDEF;
3605 if(name) {
3606 for(j = 0; j < model->numparam; j++)
3607 if(!strcmp(name, model->param[j].name)) {
3608 pi = (M3D_INDEX)j;
3609 break;
3610 }
3611 if(pi == M3D_UNDEF) {
3612 pi = model->numparam++;
3613 model->param = (m3dvi_t*)M3D_REALLOC(model->param, model->numparam * sizeof(m3dvi_t));
3614 if(!model->param) goto memerr;
3615 model->param[pi].name = name;
3616 model->param[pi].count = 0;
3617 }
3618 }
3619#endif
3620 }
3621 continue;
3622 }
3623 if(n != 3) { M3D_LOG("Only triangle mesh supported for now"); model->errcode = M3D_ERR_UNKMESH; return model; }
3624 i = model->numface++;
3625 if(model->numface > am) {
3626 am = model->numface + 4095;
3627 model->face = (m3df_t*)M3D_REALLOC(model->face, am * sizeof(m3df_t));
3628 if(!model->face) goto memerr;
3629 }
3630 memset(&model->face[i], 255, sizeof(m3df_t)); /* set all index to -1 by default */
3631 model->face[i].materialid = mi;
3632#ifdef M3D_VERTEXMAX
3633 model->face[i].paramid = pi;
3634#endif
3635 for(j = 0; data < chunk && j < n; j++) {
3636 /* vertex */
3637 data = _m3d_getidx(data, model->vi_s, &model->face[i].vertex[j]);
3638 /* texcoord */
3639 if(k & 1)
3640 data = _m3d_getidx(data, model->ti_s, &model->face[i].texcoord[j]);
3641 /* normal */
3642 if(k & 2)
3643 data = _m3d_getidx(data, model->vi_s, &model->face[i].normal[j]);
3644#ifndef M3D_NONORMALS
3645 if(model->face[i].normal[j] == M3D_UNDEF) neednorm = 1;
3646#endif
3647 /* maximum */
3648 if(k & 4)
3649#ifdef M3D_VERTEXMAX
3650 data = _m3d_getidx(data, model->vi_s, &model->face[i].vertmax[j]);
3651#else
3652 data += model->vi_s;
3653#endif
3654 }
3655 if(j != n) { M3D_LOG("Invalid mesh"); model->numface = 0; model->errcode = M3D_ERR_UNKMESH; return model; }
3656 }
3657 model->face = (m3df_t*)M3D_REALLOC(model->face, model->numface * sizeof(m3df_t));
3658 } else
3659 if(M3D_CHUNKMAGIC(data, 'V','O','X','T')) {
3660 /* voxel types */
3661 M3D_LOG("Voxel types list");
3662 if(model->voxtype) { M3D_LOG("More voxel type chunks, should be unique"); model->errcode = M3D_ERR_VOXT; continue; }
3663 if(model->ci_s && model->ci_s < 4 && !model->cmap) model->errcode = M3D_ERR_CMAP;
3664 reclen = model->ci_s + model->si_s + 3 + model->sk_s;
3665 k = len / reclen;
3666 model->voxtype = (m3dvt_t*)M3D_MALLOC(k * sizeof(m3dvt_t));
3667 if(!model->voxtype) goto memerr;
3668 memset(model->voxtype, 0, k * sizeof(m3dvt_t));
3669 model->numvoxtype = 0;
3670 for(i = 0, data += sizeof(m3dchunk_t); data < chunk && i < k; i++) {
3671 switch(model->ci_s) {
3672 case 1: model->voxtype[i].color = model->cmap ? model->cmap[data[0]] : 0; data++; break;
3673 case 2: model->voxtype[i].color = model->cmap ? model->cmap[*((uint16_t*)data)] : 0; data += 2; break;
3674 case 4: model->voxtype[i].color = *((uint32_t*)data); data += 4; break;
3675 /* case 8: break; */
3676 }
3677 M3D_GETSTR(name);
3678 model->voxtype[i].materialid = M3D_UNDEF;
3679 if(name) {
3680 model->voxtype[i].name = name;
3681/*
3682 for(j = 0; j < model->nummaterial; j++)
3683 if(!strcmp(name, model->material[j].name)) {
3684 model->voxtype[i].materialid = (M3D_INDEX)j;
3685 break;
3686 }
3687*/
3688 }
3689 j = *data++;
3690 model->voxtype[i].rotation = j & 0xBF;
3691 model->voxtype[i].voxshape = ((j & 0x40) << 2) | *data++;
3692 model->voxtype[i].numitem = *data++;
3693 model->voxtype[i].skinid = M3D_UNDEF;
3694 data = _m3d_getidx(data, model->sk_s, &model->voxtype[i].skinid);
3695 if(model->voxtype[i].numitem) {
3696 model->voxtype[i].item = (m3dvi_t*)M3D_MALLOC(model->voxtype[i].numitem * sizeof(m3dvi_t));
3697 if(!model->voxtype[i].item) goto memerr;
3698 memset(model->voxtype[i].item, 0, model->voxtype[i].numitem * sizeof(m3dvi_t));
3699 for(j = 0; j < model->voxtype[i].numitem; j++) {
3700 model->voxtype[i].item[j].count = *data++;
3701 model->voxtype[i].item[j].count |= (*data++) << 8;
3702 M3D_GETSTR(model->voxtype[i].item[j].name);
3703 }
3704 }
3705 }
3706 model->numvoxtype = i;
3707 if(k != model->numvoxtype) {
3708 model->voxtype = (m3dvt_t*)M3D_REALLOC(model->voxtype, model->numvoxtype * sizeof(m3dvt_t));
3709 if(!model->voxtype) goto memerr;
3710 }
3711 } else
3712 if(M3D_CHUNKMAGIC(data, 'V','O','X','D')) {
3713 /* voxel data */
3714 data += sizeof(m3dchunk_t);
3715 M3D_GETSTR(name);
3716 M3D_LOG("Voxel Data Layer");
3717 M3D_LOG(name);
3718 if(model->vd_s > 4 || model->vp_s > 2) { M3D_LOG("No voxel index size"); model->errcode = M3D_ERR_UNKVOX; continue; }
3719 if(!model->voxtype) { M3D_LOG("No voxel type chunk before voxel data"); model->errcode = M3D_ERR_VOXT; }
3720 i = model->numvoxel++;
3721 model->voxel = (m3dvx_t*)M3D_REALLOC(model->voxel, model->numvoxel * sizeof(m3dvx_t));
3722 if(!model->voxel) goto memerr;
3723 memset(&model->voxel[i], 0, sizeof(m3dvx_t));
3724 model->voxel[i].name = name;
3725 switch(model->vd_s) {
3726 case 1:
3727 model->voxel[i].x = (int32_t)((int8_t)data[0]);
3728 model->voxel[i].y = (int32_t)((int8_t)data[1]);
3729 model->voxel[i].z = (int32_t)((int8_t)data[2]);
3730 model->voxel[i].w = (uint32_t)(data[3]);
3731 model->voxel[i].h = (uint32_t)(data[4]);
3732 model->voxel[i].d = (uint32_t)(data[5]);
3733 data += 6;
3734 break;
3735 case 2:
3736 model->voxel[i].x = (int32_t)(*((int16_t*)(data+0)));
3737 model->voxel[i].y = (int32_t)(*((int16_t*)(data+2)));
3738 model->voxel[i].z = (int32_t)(*((int16_t*)(data+4)));
3739 model->voxel[i].w = (uint32_t)(*((uint16_t*)(data+6)));
3740 model->voxel[i].h = (uint32_t)(*((uint16_t*)(data+8)));
3741 model->voxel[i].d = (uint32_t)(*((uint16_t*)(data+10)));
3742 data += 12;
3743 break;
3744 case 4:
3745 model->voxel[i].x = *((int32_t*)(data+0));
3746 model->voxel[i].y = *((int32_t*)(data+4));
3747 model->voxel[i].z = *((int32_t*)(data+8));
3748 model->voxel[i].w = *((uint32_t*)(data+12));
3749 model->voxel[i].h = *((uint32_t*)(data+16));
3750 model->voxel[i].d = *((uint32_t*)(data+20));
3751 data += 24;
3752 break;
3753 }
3754 model->voxel[i].uncertain = *data++;
3755 model->voxel[i].groupid = *data++;
3756 k = model->voxel[i].w * model->voxel[i].h * model->voxel[i].d;
3757 model->voxel[i].data = (M3D_VOXEL*)M3D_MALLOC(k * sizeof(M3D_VOXEL));
3758 if(!model->voxel[i].data) goto memerr;
3759 memset(model->voxel[i].data, 0xff, k * sizeof(M3D_VOXEL));
3760 for(j = 0; data < chunk && j < k;) {
3761 l = ((*data++) & 0x7F) + 1;
3762 if(data[-1] & 0x80) {
3763 data = _m3d_getidx(data, model->vp_s, &mi);
3764 while(l-- && j < k) model->voxel[i].data[j++] = (M3D_VOXEL)mi;
3765 } else
3766 while(l-- && j < k) {
3767 data = _m3d_getidx(data, model->vp_s, &mi);
3768 model->voxel[i].data[j++] = (M3D_VOXEL)mi;
3769 }
3770 }
3771 } else
3772 if(M3D_CHUNKMAGIC(data, 'S','H','P','E')) {
3773 /* mathematical shape */
3774 data += sizeof(m3dchunk_t);
3775 M3D_GETSTR(name);
3776 M3D_LOG("Mathematical Shape");
3777 M3D_LOG(name);
3778 i = model->numshape++;
3779 model->shape = (m3dh_t*)M3D_REALLOC(model->shape, model->numshape * sizeof(m3dh_t));
3780 if(!model->shape) goto memerr;
3781 h = &model->shape[i];
3782 h->numcmd = 0;
3783 h->cmd = NULL;
3784 h->name = name;
3785 h->group = M3D_UNDEF;
3786 data = _m3d_getidx(data, model->bi_s, &h->group);
3787 if(h->group != M3D_UNDEF && h->group >= model->numbone) {
3788 M3D_LOG("Unknown bone id as shape group in shape");
3789 M3D_LOG(name);
3790 h->group = M3D_UNDEF;
3791 model->errcode = M3D_ERR_SHPE;
3792 }
3793 while(data < chunk) {
3794 i = h->numcmd++;
3795 h->cmd = (m3dc_t*)M3D_REALLOC(h->cmd, h->numcmd * sizeof(m3dc_t));
3796 if(!h->cmd) goto memerr;
3797 h->cmd[i].type = *data++;
3798 if(h->cmd[i].type & 0x80) {
3799 h->cmd[i].type &= 0x7F;
3800 h->cmd[i].type |= (*data++ << 7);
3801 }
3802 if(h->cmd[i].type >= (unsigned int)(sizeof(m3d_commandtypes)/sizeof(m3d_commandtypes[0]))) {
3803 M3D_LOG("Unknown shape command in");
3804 M3D_LOG(h->name);
3805 model->errcode = M3D_ERR_UNKCMD;
3806 break;
3807 }
3808 cd = &m3d_commandtypes[h->cmd[i].type];
3809 h->cmd[i].arg = (uint32_t*)M3D_MALLOC(cd->p * sizeof(uint32_t));
3810 if(!h->cmd[i].arg) goto memerr;
3811 memset(h->cmd[i].arg, 0, cd->p * sizeof(uint32_t));
3812 for(k = n = 0, l = cd->p; k < l; k++)
3813 switch(cd->a[((k - n) % (cd->p - n)) + n]) {
3814 case m3dcp_mi_t:
3815 h->cmd[i].arg[k] = M3D_NOTDEFINED;
3816 M3D_GETSTR(name);
3817 if(name) {
3818 for(n = 0; n < model->nummaterial; n++)
3819 if(!strcmp(name, model->material[n].name)) {
3820 h->cmd[i].arg[k] = n;
3821 break;
3822 }
3823 if(h->cmd[i].arg[k] == M3D_NOTDEFINED) model->errcode = M3D_ERR_MTRL;
3824 }
3825 break;
3826 case m3dcp_vc_t:
3827 f = 0.0f;
3828 switch(model->vc_s) {
3829 case 1: f = (float)((int8_t)data[0]) / 127; break;
3830 case 2: f = (float)(*((int16_t*)(data+0))) / 32767; break;
3831 case 4: f = (float)(*((float*)(data+0))); break;
3832 case 8: f = (float)(*((double*)(data+0))); break;
3833 }
3834 memcpy(&h->cmd[i].arg[k], &f, 4);
3835 data += model->vc_s;
3836 break;
3837 case m3dcp_hi_t: data = _m3d_getidx(data, model->hi_s, &h->cmd[i].arg[k]); break;
3838 case m3dcp_fi_t: data = _m3d_getidx(data, model->fi_s, &h->cmd[i].arg[k]); break;
3839 case m3dcp_ti_t: data = _m3d_getidx(data, model->ti_s, &h->cmd[i].arg[k]); break;
3840 case m3dcp_qi_t:
3841 case m3dcp_vi_t: data = _m3d_getidx(data, model->vi_s, &h->cmd[i].arg[k]); break;
3842 case m3dcp_i1_t: data = _m3d_getidx(data, 1, &h->cmd[i].arg[k]); break;
3843 case m3dcp_i2_t: data = _m3d_getidx(data, 2, &h->cmd[i].arg[k]); break;
3844 case m3dcp_i4_t: data = _m3d_getidx(data, 4, &h->cmd[i].arg[k]); break;
3845 case m3dcp_va_t: data = _m3d_getidx(data, 4, &h->cmd[i].arg[k]);
3846 n = k + 1; l += (h->cmd[i].arg[k] - 1) * (cd->p - k - 1);
3847 h->cmd[i].arg = (uint32_t*)M3D_REALLOC(h->cmd[i].arg, l * sizeof(uint32_t));
3848 if(!h->cmd[i].arg) goto memerr;
3849 memset(&h->cmd[i].arg[k + 1], 0, (l - k - 1) * sizeof(uint32_t));
3850 break;
3851 }
3852 }
3853 } else
3854 /* annotation label list */
3855 if(M3D_CHUNKMAGIC(data, 'L','B','L','S')) {
3856 data += sizeof(m3dchunk_t);
3857 M3D_GETSTR(name);
3858 M3D_GETSTR(lang);
3859 M3D_LOG("Label list");
3860 if(name) { M3D_LOG(name); }
3861 if(lang) { M3D_LOG(lang); }
3862 if(model->ci_s && model->ci_s < 4 && !model->cmap) model->errcode = M3D_ERR_CMAP;
3863 k = 0;
3864 switch(model->ci_s) {
3865 case 1: k = model->cmap ? model->cmap[data[0]] : 0; data++; break;
3866 case 2: k = model->cmap ? model->cmap[*((uint16_t*)data)] : 0; data += 2; break;
3867 case 4: k = *((uint32_t*)data); data += 4; break;
3868 /* case 8: break; */
3869 }
3870 reclen = model->vi_s + model->si_s;
3871 i = model->numlabel; model->numlabel += len / reclen;
3872 model->label = (m3dl_t*)M3D_REALLOC(model->label, model->numlabel * sizeof(m3dl_t));
3873 if(!model->label) goto memerr;
3874 memset(&model->label[i], 0, (model->numlabel - i) * sizeof(m3dl_t));
3875 for(; data < chunk && i < model->numlabel; i++) {
3876 model->label[i].name = name;
3877 model->label[i].lang = lang;
3878 model->label[i].color = k;
3879 data = _m3d_getidx(data, model->vi_s, &model->label[i].vertexid);
3880 M3D_GETSTR(model->label[i].text);
3881 }
3882 } else
3883 /* action */
3884 if(M3D_CHUNKMAGIC(data, 'A','C','T','N')) {
3885 M3D_LOG("Action");
3886 i = model->numaction++;
3887 model->action = (m3da_t*)M3D_REALLOC(model->action, model->numaction * sizeof(m3da_t));
3888 if(!model->action) goto memerr;
3889 a = &model->action[i];
3890 data += sizeof(m3dchunk_t);
3891 M3D_GETSTR(a->name);
3892 M3D_LOG(a->name);
3893 a->numframe = *((uint16_t*)data); data += 2;
3894 if(a->numframe < 1) {
3895 model->numaction--;
3896 } else {
3897 a->durationmsec = *((uint32_t*)data); data += 4;
3898 a->frame = (m3dfr_t*)M3D_MALLOC(a->numframe * sizeof(m3dfr_t));
3899 if(!a->frame) goto memerr;
3900 for(i = 0; data < chunk && i < a->numframe; i++) {
3901 a->frame[i].msec = *((uint32_t*)data); data += 4;
3902 a->frame[i].numtransform = 0; a->frame[i].transform = NULL;
3903 data = _m3d_getidx(data, model->fc_s, &a->frame[i].numtransform);
3904 if(a->frame[i].numtransform > 0) {
3905 a->frame[i].transform = (m3dtr_t*)M3D_MALLOC(a->frame[i].numtransform * sizeof(m3dtr_t));
3906 for(j = 0; j < a->frame[i].numtransform; j++) {
3907 data = _m3d_getidx(data, model->bi_s, &a->frame[i].transform[j].boneid);
3908 data = _m3d_getidx(data, model->vi_s, &a->frame[i].transform[j].pos);
3909 data = _m3d_getidx(data, model->vi_s, &a->frame[i].transform[j].ori);
3910 }
3911 }
3912 }
3913 }
3914 } else {
3915 i = model->numextra++;
3916 model->extra = (m3dchunk_t**)M3D_REALLOC(model->extra, model->numextra * sizeof(m3dchunk_t*));
3917 if(!model->extra) goto memerr;
3918 model->extra[i] = (m3dchunk_t*)data;
3919 }
3920 }
3921 /* calculate normals, normalize skin weights, create bone/vertex cross-references and calculate transform matrices */
3922#ifdef M3D_ASCII
3923postprocess:
3924#endif
3925 if(model) {
3926 M3D_LOG("Post-process");
3927#ifdef M3D_PROFILING
3928 gettimeofday(&tv1, NULL);
3929 tvd.tv_sec = tv1.tv_sec - tv0.tv_sec;
3930 tvd.tv_usec = tv1.tv_usec - tv0.tv_usec;
3931 if(tvd.tv_usec < 0) { tvd.tv_sec--; tvd.tv_usec += 1000000L; }
3932 printf(" Parsing chunks %ld.%06ld sec\n", tvd.tv_sec, tvd.tv_usec);
3933#endif
3934#ifndef M3D_NOVOXELS
3935 if(model->numvoxel && model->voxel) {
3936 M3D_LOG("Converting voxels into vertices and mesh");
3937 /* add normals */
3938 enorm = model->numvertex; model->numvertex += 6;
3939 model->vertex = (m3dv_t*)M3D_REALLOC(model->vertex, model->numvertex * sizeof(m3dv_t));
3940 if(!model->vertex) goto memerr;
3941 memset(&model->vertex[enorm], 0, 6 * sizeof(m3dv_t));
3942 for(l = 0; l < 6; l++)
3943 model->vertex[enorm+l].skinid = M3D_UNDEF;
3944 model->vertex[enorm+0].y = (M3D_FLOAT)-1.0;
3945 model->vertex[enorm+1].z = (M3D_FLOAT)-1.0;
3946 model->vertex[enorm+2].x = (M3D_FLOAT)-1.0;
3947 model->vertex[enorm+3].y = (M3D_FLOAT)1.0;
3948 model->vertex[enorm+4].z = (M3D_FLOAT)1.0;
3949 model->vertex[enorm+5].x = (M3D_FLOAT)1.0;
3950 /* this is a fast, not so memory efficient version, only basic face culling used */
3951 min_x = min_y = min_z = 2147483647L;
3952 max_x = max_y = max_z = -2147483647L;
3953 for(i = 0; i < model->numvoxel; i++) {
3954 if(model->voxel[i].x + (int32_t)model->voxel[i].w > max_x) max_x = model->voxel[i].x + (int32_t)model->voxel[i].w;
3955 if(model->voxel[i].x < min_x) min_x = model->voxel[i].x;
3956 if(model->voxel[i].y + (int32_t)model->voxel[i].h > max_y) max_y = model->voxel[i].y + (int32_t)model->voxel[i].h;
3957 if(model->voxel[i].y < min_y) min_y = model->voxel[i].y;
3958 if(model->voxel[i].z + (int32_t)model->voxel[i].d > max_z) max_z = model->voxel[i].z + (int32_t)model->voxel[i].d;
3959 if(model->voxel[i].z < min_z) min_z = model->voxel[i].z;
3960 }
3961 i = (-min_x > max_x ? -min_x : max_x);
3962 j = (-min_y > max_y ? -min_y : max_y);
3963 k = (-min_z > max_z ? -min_z : max_z);
3964 if(j > i) i = j;
3965 if(k > i) i = k;
3966 if(i <= 1) i = 1;
3967 w = (M3D_FLOAT)1.0 / (M3D_FLOAT)i;
3968 if(i >= 254) model->vc_s = 2;
3969 if(i >= 65534) model->vc_s = 4;
3970 for(i = 0; i < model->numvoxel; i++) {
3971 sx = model->voxel[i].w; sz = model->voxel[i].d; sy = model->voxel[i].h;
3972 for(y = 0, j = 0; y < sy; y++)
3973 for(z = 0; z < sz; z++)
3974 for(x = 0; x < sx; x++, j++)
3975 if(model->voxel[i].data[j] < model->numvoxtype) {
3976 k = 0;
3977 /* 16__32 ____
3978 * /| /| /|2 /|
3979 *64_128 | /_8_/ 32
3980 * | 1_|_2 |4|_|_|
3981 * |/ |/ |/ 1|/
3982 * 4___8 |16_| */
3983 k = n = am = 0;
3984 if(!y || model->voxel[i].data[j - sx*sz] >= model->numvoxtype) { n++; am |= 1; k |= 1|2|4|8; }
3985 if(!z || model->voxel[i].data[j - sx] >= model->numvoxtype) { n++; am |= 2; k |= 1|2|16|32; }
3986 if(!x || model->voxel[i].data[j - 1] >= model->numvoxtype) { n++; am |= 4; k |= 1|4|16|64; }
3987 if(y == sy-1 || model->voxel[i].data[j + sx*sz] >= model->numvoxtype) { n++; am |= 8; k |= 16|32|64|128; }
3988 if(z == sz-1 || model->voxel[i].data[j + sx] >= model->numvoxtype) { n++; am |= 16; k |= 4|8|64|128; }
3989 if(x == sx-1 || model->voxel[i].data[j + 1] >= model->numvoxtype) { n++; am |= 32; k |= 2|8|32|128; }
3990 if(k) {
3991 memset(edge, 255, sizeof(edge));
3992 for(l = 0, len = 1, reclen = model->numvertex; l < 8; l++, len <<= 1)
3993 if(k & len) edge[l] = model->numvertex++;
3994 model->vertex = (m3dv_t*)M3D_REALLOC(model->vertex, model->numvertex * sizeof(m3dv_t));
3995 if(!model->vertex) goto memerr;
3996 memset(&model->vertex[reclen], 0, (model->numvertex-reclen) * sizeof(m3dv_t));
3997 for(l = reclen; l < model->numvertex; l++) {
3998 model->vertex[l].skinid = model->voxtype[model->voxel[i].data[j]].skinid;
3999 model->vertex[l].color = model->voxtype[model->voxel[i].data[j]].color;
4000 }
4001 l = reclen;
4002 if(k & 1) {
4003 model->vertex[l].x = (model->voxel[i].x + x) * w;
4004 model->vertex[l].y = (model->voxel[i].y + y) * w;
4005 model->vertex[l].z = (model->voxel[i].z + z) * w;
4006 l++;
4007 }
4008 if(k & 2) {
4009 model->vertex[l].x = (model->voxel[i].x + x + 1) * w;
4010 model->vertex[l].y = (model->voxel[i].y + y) * w;
4011 model->vertex[l].z = (model->voxel[i].z + z) * w;
4012 l++;
4013 }
4014 if(k & 4) {
4015 model->vertex[l].x = (model->voxel[i].x + x) * w;
4016 model->vertex[l].y = (model->voxel[i].y + y) * w;
4017 model->vertex[l].z = (model->voxel[i].z + z + 1) * w;
4018 l++;
4019 }
4020 if(k & 8) {
4021 model->vertex[l].x = (model->voxel[i].x + x + 1) * w;
4022 model->vertex[l].y = (model->voxel[i].y + y) * w;
4023 model->vertex[l].z = (model->voxel[i].z + z + 1) * w;
4024 l++;
4025 }
4026 if(k & 16) {
4027 model->vertex[l].x = (model->voxel[i].x + x) * w;
4028 model->vertex[l].y = (model->voxel[i].y + y + 1) * w;
4029 model->vertex[l].z = (model->voxel[i].z + z) * w;
4030 l++;
4031 }
4032 if(k & 32) {
4033 model->vertex[l].x = (model->voxel[i].x + x + 1) * w;
4034 model->vertex[l].y = (model->voxel[i].y + y + 1) * w;
4035 model->vertex[l].z = (model->voxel[i].z + z) * w;
4036 l++;
4037 }
4038 if(k & 64) {
4039 model->vertex[l].x = (model->voxel[i].x + x) * w;
4040 model->vertex[l].y = (model->voxel[i].y + y + 1) * w;
4041 model->vertex[l].z = (model->voxel[i].z + z + 1) * w;
4042 l++;
4043 }
4044 if(k & 128) {
4045 model->vertex[l].x = (model->voxel[i].x + x + 1) * w;
4046 model->vertex[l].y = (model->voxel[i].y + y + 1) * w;
4047 model->vertex[l].z = (model->voxel[i].z + z + 1) * w;
4048 l++;
4049 }
4050 n <<= 1;
4051 l = model->numface; model->numface += n;
4052 model->face = (m3df_t*)M3D_REALLOC(model->face, model->numface * sizeof(m3df_t));
4053 if(!model->face) goto memerr;
4054 memset(&model->face[l], 255, n * sizeof(m3df_t));
4055 for(reclen = l; reclen < model->numface; reclen++)
4056 model->face[reclen].materialid = model->voxtype[model->voxel[i].data[j]].materialid;
4057 if(am & 1) { /* bottom */
4058 model->face[l].vertex[0] = edge[0]; model->face[l].vertex[1] = edge[1]; model->face[l].vertex[2] = edge[2];
4059 model->face[l+1].vertex[0] = edge[2]; model->face[l+1].vertex[1] = edge[1]; model->face[l+1].vertex[2] = edge[3];
4060 model->face[l].normal[0] = model->face[l].normal[1] = model->face[l].normal[2] =
4061 model->face[l+1].normal[0] = model->face[l+1].normal[1] = model->face[l+1].normal[2] = enorm;
4062 l += 2;
4063 }
4064 if(am & 2) { /* north */
4065 model->face[l].vertex[0] = edge[0]; model->face[l].vertex[1] = edge[4]; model->face[l].vertex[2] = edge[1];
4066 model->face[l+1].vertex[0] = edge[1]; model->face[l+1].vertex[1] = edge[4]; model->face[l+1].vertex[2] = edge[5];
4067 model->face[l].normal[0] = model->face[l].normal[1] = model->face[l].normal[2] =
4068 model->face[l+1].normal[0] = model->face[l+1].normal[1] = model->face[l+1].normal[2] = enorm+1;
4069 l += 2;
4070 }
4071 if(am & 4) { /* west */
4072 model->face[l].vertex[0] = edge[0]; model->face[l].vertex[1] = edge[2]; model->face[l].vertex[2] = edge[4];
4073 model->face[l+1].vertex[0] = edge[2]; model->face[l+1].vertex[1] = edge[6]; model->face[l+1].vertex[2] = edge[4];
4074 model->face[l].normal[0] = model->face[l].normal[1] = model->face[l].normal[2] =
4075 model->face[l+1].normal[0] = model->face[l+1].normal[1] = model->face[l+1].normal[2] = enorm+2;
4076 l += 2;
4077 }
4078 if(am & 8) { /* top */
4079 model->face[l].vertex[0] = edge[4]; model->face[l].vertex[1] = edge[6]; model->face[l].vertex[2] = edge[5];
4080 model->face[l+1].vertex[0] = edge[5]; model->face[l+1].vertex[1] = edge[6]; model->face[l+1].vertex[2] = edge[7];
4081 model->face[l].normal[0] = model->face[l].normal[1] = model->face[l].normal[2] =
4082 model->face[l+1].normal[0] = model->face[l+1].normal[1] = model->face[l+1].normal[2] = enorm+3;
4083 l += 2;
4084 }
4085 if(am & 16) { /* south */
4086 model->face[l].vertex[0] = edge[2]; model->face[l].vertex[1] = edge[7]; model->face[l].vertex[2] = edge[6];
4087 model->face[l+1].vertex[0] = edge[7]; model->face[l+1].vertex[1] = edge[2]; model->face[l+1].vertex[2] = edge[3];
4088 model->face[l].normal[0] = model->face[l].normal[1] = model->face[l].normal[2] =
4089 model->face[l+1].normal[0] = model->face[l+1].normal[1] = model->face[l+1].normal[2] = enorm+4;
4090 l += 2;
4091 }
4092 if(am & 32) { /* east */
4093 model->face[l].vertex[0] = edge[1]; model->face[l].vertex[1] = edge[5]; model->face[l].vertex[2] = edge[7];
4094 model->face[l+1].vertex[0] = edge[1]; model->face[l+1].vertex[1] = edge[7]; model->face[l+1].vertex[2] = edge[3];
4095 model->face[l].normal[0] = model->face[l].normal[1] = model->face[l].normal[2] =
4096 model->face[l+1].normal[0] = model->face[l+1].normal[1] = model->face[l+1].normal[2] = enorm+5;
4097 l += 2;
4098 }
4099 }
4100 }
4101 }
4102 }
4103#endif
4104#ifndef M3D_NONORMALS
4105 if(model->numface && model->face && neednorm) {
4106 /* if they are missing, calculate triangle normals into a temporary buffer */
4107 norm = (m3dv_t*)M3D_MALLOC(model->numface * sizeof(m3dv_t));
4108 if(!norm) goto memerr;
4109 for(i = 0, n = model->numvertex; i < model->numface; i++)
4110 if(model->face[i].normal[0] == M3D_UNDEF) {
4111 v0 = &model->vertex[model->face[i].vertex[0]];
4112 v1 = &model->vertex[model->face[i].vertex[1]];
4113 v2 = &model->vertex[model->face[i].vertex[2]];
4114 va.x = v1->x - v0->x; va.y = v1->y - v0->y; va.z = v1->z - v0->z;
4115 vb.x = v2->x - v0->x; vb.y = v2->y - v0->y; vb.z = v2->z - v0->z;
4116 v0 = &norm[i];
4117 v0->x = (va.y * vb.z) - (va.z * vb.y);
4118 v0->y = (va.z * vb.x) - (va.x * vb.z);
4119 v0->z = (va.x * vb.y) - (va.y * vb.x);
4120 w = _m3d_rsq((v0->x * v0->x) + (v0->y * v0->y) + (v0->z * v0->z));
4121 v0->x *= w; v0->y *= w; v0->z *= w;
4122 model->face[i].normal[0] = model->face[i].vertex[0] + n;
4123 model->face[i].normal[1] = model->face[i].vertex[1] + n;
4124 model->face[i].normal[2] = model->face[i].vertex[2] + n;
4125 }
4126 /* this is the fast way, we don't care if a normal is repeated in model->vertex */
4127 M3D_LOG("Generating normals");
4128 model->flags |= M3D_FLG_GENNORM;
4129 model->numvertex <<= 1;
4130 model->vertex = (m3dv_t*)M3D_REALLOC(model->vertex, model->numvertex * sizeof(m3dv_t));
4131 if(!model->vertex) goto memerr;
4132 memset(&model->vertex[n], 0, n * sizeof(m3dv_t));
4133 for(i = 0; i < model->numface; i++)
4134 for(j = 0; j < 3; j++) {
4135 v0 = &model->vertex[model->face[i].vertex[j] + n];
4136 v0->x += norm[i].x;
4137 v0->y += norm[i].y;
4138 v0->z += norm[i].z;
4139 }
4140 /* for each vertex, take the average of the temporary normals and use that */
4141 for(i = 0, v0 = &model->vertex[n]; i < n; i++, v0++) {
4142 w = _m3d_rsq((v0->x * v0->x) + (v0->y * v0->y) + (v0->z * v0->z));
4143 v0->x *= w; v0->y *= w; v0->z *= w;
4144 v0->skinid = M3D_UNDEF;
4145 }
4146 M3D_FREE(norm);
4147 }
4148#endif
4149 if(model->numbone && model->bone && model->numskin && model->skin && model->numvertex && model->vertex) {
4150#ifndef M3D_NOWEIGHTS
4151 M3D_LOG("Generating weight cross-reference");
4152 for(i = 0; i < model->numvertex; i++) {
4153 if(model->vertex[i].skinid < model->numskin) {
4154 sk = &model->skin[model->vertex[i].skinid];
4155 w = (M3D_FLOAT)0.0;
4156 for(j = 0; j < M3D_NUMBONE && sk->boneid[j] != M3D_UNDEF && sk->weight[j] > (M3D_FLOAT)0.0; j++)
4157 w += sk->weight[j];
4158 for(j = 0; j < M3D_NUMBONE && sk->boneid[j] != M3D_UNDEF && sk->weight[j] > (M3D_FLOAT)0.0; j++) {
4159 sk->weight[j] /= w;
4160 b = &model->bone[sk->boneid[j]];
4161 k = b->numweight++;
4162 b->weight = (m3dw_t*)M3D_REALLOC(b->weight, b->numweight * sizeof(m3da_t));
4163 if(!b->weight) goto memerr;
4164 b->weight[k].vertexid = i;
4165 b->weight[k].weight = sk->weight[j];
4166 }
4167 }
4168 }
4169#endif
4170#ifndef M3D_NOANIMATION
4171 M3D_LOG("Calculating bone transformation matrices");
4172 for(i = 0; i < model->numbone; i++) {
4173 b = &model->bone[i];
4174 if(model->bone[i].parent == M3D_UNDEF) {
4175 _m3d_mat((M3D_FLOAT*)&b->mat4, &model->vertex[b->pos], &model->vertex[b->ori]);
4176 } else {
4177 _m3d_mat((M3D_FLOAT*)&r, &model->vertex[b->pos], &model->vertex[b->ori]);
4178 _m3d_mul((M3D_FLOAT*)&b->mat4, (M3D_FLOAT*)&model->bone[b->parent].mat4, (M3D_FLOAT*)&r);
4179 }
4180 }
4181 for(i = 0; i < model->numbone; i++)
4182 _m3d_inv((M3D_FLOAT*)&model->bone[i].mat4);
4183#endif
4184 }
4185#ifdef M3D_PROFILING
4186 gettimeofday(&tv0, NULL);
4187 tvd.tv_sec = tv0.tv_sec - tv1.tv_sec;
4188 tvd.tv_usec = tv0.tv_usec - tv1.tv_usec;
4189 if(tvd.tv_usec < 0) { tvd.tv_sec--; tvd.tv_usec += 1000000L; }
4190 printf(" Post-process %ld.%06ld sec\n", tvd.tv_sec, tvd.tv_usec);
4191#endif
4192 }
4193 return model;
4194}
4196/**
4197 * Calculates skeletons for animation frames, returns a working copy (should be freed after use)
4198 */
4199m3dtr_t *m3d_frame(m3d_t *model, M3D_INDEX actionid, M3D_INDEX frameid, m3dtr_t *skeleton)
4200{
4201 unsigned int i;
4202 M3D_INDEX s = frameid;
4203 m3dfr_t *fr;
4205 if(!model || !model->numbone || !model->bone || (actionid != M3D_UNDEF && (!model->action ||
4206 actionid >= model->numaction || frameid >= model->action[actionid].numframe))) {
4207 model->errcode = M3D_ERR_UNKFRAME;
4208 return skeleton;
4209 }
4210 model->errcode = M3D_SUCCESS;
4211 if(!skeleton) {
4212 skeleton = (m3dtr_t*)M3D_MALLOC(model->numbone * sizeof(m3dtr_t));
4213 if(!skeleton) {
4214 model->errcode = M3D_ERR_ALLOC;
4215 return NULL;
4216 }
4217 goto gen;
4218 }
4219 if(actionid == M3D_UNDEF || !frameid) {
4220gen: s = 0;
4221 for(i = 0; i < model->numbone; i++) {
4222 skeleton[i].boneid = i;
4223 skeleton[i].pos = model->bone[i].pos;
4224 skeleton[i].ori = model->bone[i].ori;
4225 }
4226 }
4227 if(actionid < model->numaction && (frameid || !model->action[actionid].frame[0].msec)) {
4228 for(; s <= frameid; s++) {
4229 fr = &model->action[actionid].frame[s];
4230 for(i = 0; i < fr->numtransform; i++) {
4231 skeleton[fr->transform[i].boneid].pos = fr->transform[i].pos;
4232 skeleton[fr->transform[i].boneid].ori = fr->transform[i].ori;
4233 }
4234 }
4235 }
4236 return skeleton;
4237}
4239#ifndef M3D_NOANIMATION
4240/**
4241 * Returns interpolated animation-pose, a working copy (should be freed after use)
4242 */
4243m3db_t *m3d_pose(m3d_t *model, M3D_INDEX actionid, uint32_t msec)
4244{
4245 unsigned int i, j, l;
4246 M3D_FLOAT r[16], t, c, d, s;
4247 m3db_t *ret;
4248 m3dv_t *v, *p, *f;
4249 m3dtr_t *tmp;
4250 m3dfr_t *fr;
4252 if(!model || !model->numbone || !model->bone) {
4253 model->errcode = M3D_ERR_UNKFRAME;
4254 return NULL;
4255 }
4256 ret = (m3db_t*)M3D_MALLOC(model->numbone * sizeof(m3db_t));
4257 if(!ret) {
4258 model->errcode = M3D_ERR_ALLOC;
4259 return NULL;
4260 }
4261 memcpy(ret, model->bone, model->numbone * sizeof(m3db_t));
4262 for(i = 0; i < model->numbone; i++)
4263 _m3d_inv((M3D_FLOAT*)&ret[i].mat4);
4264 if(!model->action || actionid >= model->numaction) {
4265 model->errcode = M3D_ERR_UNKFRAME;
4266 return ret;
4267 }
4268 msec %= model->action[actionid].durationmsec;
4269 model->errcode = M3D_SUCCESS;
4270 fr = &model->action[actionid].frame[0];
4271 for(j = l = 0; j < model->action[actionid].numframe && model->action[actionid].frame[j].msec <= msec; j++) {
4272 fr = &model->action[actionid].frame[j];
4273 l = fr->msec;
4274 for(i = 0; i < fr->numtransform; i++) {
4275 ret[fr->transform[i].boneid].pos = fr->transform[i].pos;
4276 ret[fr->transform[i].boneid].ori = fr->transform[i].ori;
4277 }
4278 }
4279 if(l != msec) {
4280 model->vertex = (m3dv_t*)M3D_REALLOC(model->vertex, (model->numvertex + 2 * model->numbone) * sizeof(m3dv_t));
4281 if(!model->vertex) {
4282 free(ret);
4283 model->errcode = M3D_ERR_ALLOC;
4284 return NULL;
4285 }
4286 tmp = (m3dtr_t*)M3D_MALLOC(model->numbone * sizeof(m3dtr_t));
4287 if(tmp) {
4288 for(i = 0; i < model->numbone; i++) {
4289 tmp[i].pos = ret[i].pos;
4290 tmp[i].ori = ret[i].ori;
4291 }
4292 fr = &model->action[actionid].frame[j % model->action[actionid].numframe];
4293 t = l >= fr->msec ? (M3D_FLOAT)1.0 : (M3D_FLOAT)(msec - l) / (M3D_FLOAT)(fr->msec - l);
4294 for(i = 0; i < fr->numtransform; i++) {
4295 tmp[fr->transform[i].boneid].pos = fr->transform[i].pos;
4296 tmp[fr->transform[i].boneid].ori = fr->transform[i].ori;
4297 }
4298 for(i = 0, j = model->numvertex; i < model->numbone; i++) {
4299 /* interpolation of position */
4300 if(ret[i].pos != tmp[i].pos) {
4301 p = &model->vertex[ret[i].pos];
4302 f = &model->vertex[tmp[i].pos];
4303 v = &model->vertex[j];
4304 v->x = p->x + t * (f->x - p->x);
4305 v->y = p->y + t * (f->y - p->y);
4306 v->z = p->z + t * (f->z - p->z);
4307 ret[i].pos = j++;
4308 }
4309 /* interpolation of orientation */
4310 if(ret[i].ori != tmp[i].ori) {
4311 p = &model->vertex[ret[i].ori];
4312 f = &model->vertex[tmp[i].ori];
4313 v = &model->vertex[j];
4314 d = p->w * f->w + p->x * f->x + p->y * f->y + p->z * f->z;
4315 if(d < 0) { d = -d; s = (M3D_FLOAT)-1.0; } else s = (M3D_FLOAT)1.0;
4316#if 0
4317 /* don't use SLERP, requires two more variables, libm linkage and it is slow (but nice) */
4318 a = (M3D_FLOAT)1.0 - t; b = t;
4319 if(d < (M3D_FLOAT)0.999999) { c = acosf(d); b = 1 / sinf(c); a = sinf(a * c) * b; b *= sinf(t * c) * s; }
4320 v->x = p->x * a + f->x * b;
4321 v->y = p->y * a + f->y * b;
4322 v->z = p->z * a + f->z * b;
4323 v->w = p->w * a + f->w * b;
4324#else
4325 /* approximated NLERP, original approximation by Arseny Kapoulkine, heavily optimized by me */
4326 c = t - (M3D_FLOAT)0.5; t += t * c * (t - (M3D_FLOAT)1.0) * (((M3D_FLOAT)1.0904 + d * ((M3D_FLOAT)-3.2452 +
4327 d * ((M3D_FLOAT)3.55645 - d * (M3D_FLOAT)1.43519))) * c * c + ((M3D_FLOAT)0.848013 + d *
4328 ((M3D_FLOAT)-1.06021 + d * (M3D_FLOAT)0.215638)));
4329 v->x = p->x + t * (s * f->x - p->x);
4330 v->y = p->y + t * (s * f->y - p->y);
4331 v->z = p->z + t * (s * f->z - p->z);
4332 v->w = p->w + t * (s * f->w - p->w);
4333 d = _m3d_rsq(v->w * v->w + v->x * v->x + v->y * v->y + v->z * v->z);
4334 v->x *= d; v->y *= d; v->z *= d; v->w *= d;
4335#endif
4336 ret[i].ori = j++;
4337 }
4338 }
4339 M3D_FREE(tmp);
4340 }
4341 }
4342 for(i = 0; i < model->numbone; i++) {
4343 if(ret[i].parent == M3D_UNDEF) {
4344 _m3d_mat((M3D_FLOAT*)&ret[i].mat4, &model->vertex[ret[i].pos], &model->vertex[ret[i].ori]);
4345 } else {
4346 _m3d_mat((M3D_FLOAT*)&r, &model->vertex[ret[i].pos], &model->vertex[ret[i].ori]);
4347 _m3d_mul((M3D_FLOAT*)&ret[i].mat4, (M3D_FLOAT*)&ret[ret[i].parent].mat4, (M3D_FLOAT*)&r);
4348 }
4349 }
4350 return ret;
4351}
4353#endif /* M3D_NOANIMATION */
4355#endif /* M3D_IMPLEMENTATION */
4357#if !defined(M3D_NODUP) && (!defined(M3D_NOIMPORTER) || defined(M3D_EXPORTER))
4358/**
4359 * Free the in-memory model
4360 */
4361void m3d_free(m3d_t *model)
4362{
4363 unsigned int i, j;
4365 if(!model) return;
4366#ifdef M3D_ASCII
4367 /* if model imported from ASCII, we have to free all strings as well */
4368 if(model->flags & M3D_FLG_FREESTR) {
4369 if(model->name) M3D_FREE(model->name);
4370 if(model->license) M3D_FREE(model->license);
4371 if(model->author) M3D_FREE(model->author);
4372 if(model->desc) M3D_FREE(model->desc);
4373 if(model->bone)
4374 for(i = 0; i < model->numbone; i++)
4375 if(model->bone[i].name)
4376 M3D_FREE(model->bone[i].name);
4377 if(model->shape)
4378 for(i = 0; i < model->numshape; i++)
4379 if(model->shape[i].name)
4380 M3D_FREE(model->shape[i].name);
4381 if(model->numvoxtype)
4382 for(i = 0; i < model->numvoxtype; i++) {
4383 if(model->voxtype[i].name)
4384 M3D_FREE(model->voxtype[i].name);
4385 for(j = 0; j < model->voxtype[i].numitem; j++)
4386 if(model->voxtype[i].item[j].name)
4387 M3D_FREE(model->voxtype[i].item[j].name);
4388 }
4389 if(model->numvoxel)
4390 for(i = 0; i < model->numvoxel; i++)
4391 if(model->voxel[i].name)
4392 M3D_FREE(model->voxel[i].name);
4393 if(model->material)
4394 for(i = 0; i < model->nummaterial; i++)
4395 if(model->material[i].name)
4396 M3D_FREE(model->material[i].name);
4397 if(model->action)
4398 for(i = 0; i < model->numaction; i++)
4399 if(model->action[i].name)
4400 M3D_FREE(model->action[i].name);
4401 if(model->texture)
4402 for(i = 0; i < model->numtexture; i++)
4403 if(model->texture[i].name)
4404 M3D_FREE(model->texture[i].name);
4405 if(model->inlined)
4406 for(i = 0; i < model->numinlined; i++) {
4407 if(model->inlined[i].name)
4408 M3D_FREE(model->inlined[i].name);
4409 if(model->inlined[i].data)
4410 M3D_FREE(model->inlined[i].data);
4411 }
4412 if(model->extra)
4413 for(i = 0; i < model->numextra; i++)
4414 if(model->extra[i])
4415 M3D_FREE(model->extra[i]);
4416 if(model->label)
4417 for(i = 0; i < model->numlabel; i++) {
4418 if(model->label[i].name) {
4419 for(j = i + 1; j < model->numlabel; j++)
4420 if(model->label[j].name == model->label[i].name)
4421 model->label[j].name = NULL;
4422 M3D_FREE(model->label[i].name);
4423 }
4424 if(model->label[i].lang) {
4425 for(j = i + 1; j < model->numlabel; j++)
4426 if(model->label[j].lang == model->label[i].lang)
4427 model->label[j].lang = NULL;
4428 M3D_FREE(model->label[i].lang);
4429 }
4430 if(model->label[i].text)
4431 M3D_FREE(model->label[i].text);
4432 }
4433 if(model->preview.data)
4434 M3D_FREE(model->preview.data);
4435 }
4436#endif
4437 if(model->flags & M3D_FLG_FREERAW) M3D_FREE(model->raw);
4439 if(model->tmap) M3D_FREE(model->tmap);
4440 if(model->bone) {
4441 for(i = 0; i < model->numbone; i++)
4442 if(model->bone[i].weight)
4443 M3D_FREE(model->bone[i].weight);
4444 M3D_FREE(model->bone);
4445 }
4446 if(model->skin) M3D_FREE(model->skin);
4447 if(model->vertex) M3D_FREE(model->vertex);
4448 if(model->face) M3D_FREE(model->face);
4449 if(model->voxtype) {
4450 for(i = 0; i < model->numvoxtype; i++)
4451 if(model->voxtype[i].item)
4452 M3D_FREE(model->voxtype[i].item);
4453 M3D_FREE(model->voxtype);
4454 }
4455 if(model->voxel) {
4456 for(i = 0; i < model->numvoxel; i++)
4457 if(model->voxel[i].data)
4458 M3D_FREE(model->voxel[i].data);
4459 M3D_FREE(model->voxel);
4460 }
4461 if(model->shape) {
4462 for(i = 0; i < model->numshape; i++) {
4463 if(model->shape[i].cmd) {
4464 for(j = 0; j < model->shape[i].numcmd; j++)
4465 if(model->shape[i].cmd[j].arg) M3D_FREE(model->shape[i].cmd[j].arg);
4466 M3D_FREE(model->shape[i].cmd);
4467 }
4468 }
4469 M3D_FREE(model->shape);
4470 }
4471 if(model->material && !(model->flags & M3D_FLG_MTLLIB)) {
4472 for(i = 0; i < model->nummaterial; i++)
4473 if(model->material[i].prop) M3D_FREE(model->material[i].prop);
4474 M3D_FREE(model->material);
4475 }
4476 if(model->texture) {
4477 for(i = 0; i < model->numtexture; i++)
4478 if(model->texture[i].d) M3D_FREE(model->texture[i].d);
4479 M3D_FREE(model->texture);
4480 }
4481 if(model->action) {
4482 for(i = 0; i < model->numaction; i++) {
4483 if(model->action[i].frame) {
4484 for(j = 0; j < model->action[i].numframe; j++)
4485 if(model->action[i].frame[j].transform) M3D_FREE(model->action[i].frame[j].transform);
4486 M3D_FREE(model->action[i].frame);
4487 }
4488 }
4489 M3D_FREE(model->action);
4490 }
4491 if(model->label) M3D_FREE(model->label);
4492 if(model->inlined) M3D_FREE(model->inlined);
4493 if(model->extra) M3D_FREE(model->extra);
4494 free(model);
4495}
4496#endif
4498#ifdef M3D_EXPORTER
4499typedef struct {
4500 char *str;
4501 uint32_t offs;
4502} m3dstr_t;
4504typedef struct {
4505 m3dti_t data;
4506 M3D_INDEX oldidx;
4507 M3D_INDEX newidx;
4508} m3dtisave_t;
4510typedef struct {
4511 m3dv_t data;
4512 M3D_INDEX oldidx;
4513 M3D_INDEX newidx;
4514 unsigned char norm;
4515} m3dvsave_t;
4517typedef struct {
4518 m3ds_t data;
4519 M3D_INDEX oldidx;
4520 M3D_INDEX newidx;
4521} m3dssave_t;
4523typedef struct {
4524 m3df_t data;
4525 int group;
4526 uint8_t opacity;
4527} m3dfsave_t;
4529/* create unique list of strings */
4530static m3dstr_t *_m3d_addstr(m3dstr_t *str, uint32_t *numstr, char *s)
4531{
4532 uint32_t i;
4533 if(!s || !*s) return str;
4534 if(str) {
4535 for(i = 0; i < *numstr; i++)
4536 if(str[i].str == s || !strcmp(str[i].str, s)) return str;
4537 }
4538 str = (m3dstr_t*)M3D_REALLOC(str, ((*numstr) + 1) * sizeof(m3dstr_t));
4539 str[*numstr].str = s;
4540 str[*numstr].offs = 0;
4541 (*numstr)++;
4542 return str;
4543}
4545/* add strings to header */
4546m3dhdr_t *_m3d_addhdr(m3dhdr_t *h, m3dstr_t *s)
4547{
4548 int i;
4549 char *safe = _m3d_safestr(s->str, 0);
4550 i = (int)strlen(safe);
4551 h = (m3dhdr_t*)M3D_REALLOC(h, h->length + i+1);
4552 if(!h) { M3D_FREE(safe); return NULL; }
4553 memcpy((uint8_t*)h + h->length, safe, i+1);
4554 s->offs = h->length - 16;
4555 h->length += i+1;
4556 M3D_FREE(safe);
4557 return h;
4558}
4560/* return offset of string */
4561static uint32_t _m3d_stridx(m3dstr_t *str, uint32_t numstr, char *s)
4562{
4563 uint32_t i;
4564 char *safe;
4565 if(!s || !*s) return 0;
4566 if(str) {
4567 safe = _m3d_safestr(s, 0);
4568 if(!safe) return 0;
4569 if(!*safe) {
4570 free(safe);
4571 return 0;
4572 }
4573 for(i = 0; i < numstr; i++)
4574 if(!strcmp(str[i].str, s)) {
4575 free(safe);
4576 return str[i].offs;
4577 }
4578 free(safe);
4579 }
4580 return 0;
4581}
4583/* compare to faces by their material */
4584static int _m3d_facecmp(const void *a, const void *b) {
4585 const m3dfsave_t *A = (const m3dfsave_t*)a, *B = (const m3dfsave_t*)b;
4586 return A->group != B->group ? A->group - B->group : (A->opacity != B->opacity ? (int)B->opacity - (int)A->opacity :
4587 (int)A->data.materialid - (int)B->data.materialid);
4588}
4589/* compare face groups */
4590static int _m3d_grpcmp(const void *a, const void *b) { return *((uint32_t*)a) - *((uint32_t*)b); }
4591/* compare UVs */
4592static int _m3d_ticmp(const void *a, const void *b) { return memcmp(a, b, sizeof(m3dti_t)); }
4593/* compare skin groups */
4594static int _m3d_skincmp(const void *a, const void *b) { return memcmp(a, b, sizeof(m3ds_t)); }
4595/* compare vertices */
4596static int _m3d_vrtxcmp(const void *a, const void *b) {
4597 int c = memcmp(a, b, 3 * sizeof(M3D_FLOAT));
4598 if(c) return c;
4599 c = ((m3dvsave_t*)a)->norm - ((m3dvsave_t*)b)->norm;
4600 if(c) return c;
4601 return memcmp(a, b, sizeof(m3dv_t));
4602}
4603/* compare labels */
4604static _inline int _m3d_strcmp(char *a, char *b)
4605{
4606 if(a == NULL && b != NULL) return -1;
4607 if(a != NULL && b == NULL) return 1;
4608 if(a == NULL && b == NULL) return 0;
4609 return strcmp(a, b);
4610}
4611static int _m3d_lblcmp(const void *a, const void *b) {
4612 const m3dl_t *A = (const m3dl_t*)a, *B = (const m3dl_t*)b;
4613 int c = _m3d_strcmp(A->lang, B->lang);
4614 if(!c) c = _m3d_strcmp(A->name, B->name);
4615 if(!c) c = _m3d_strcmp(A->text, B->text);
4616 return c;
4617}
4618/* compare two colors by HSV value */
4619_inline static int _m3d_cmapcmp(const void *a, const void *b)
4620{
4621 uint8_t *A = (uint8_t*)a, *B = (uint8_t*)b;
4622 _register int m, vA, vB;
4623 /* get HSV value for A */
4624 m = A[2] < A[1]? A[2] : A[1]; if(A[0] < m) m = A[0];
4625 vA = A[2] > A[1]? A[2] : A[1]; if(A[0] > vA) vA = A[0];
4626 /* get HSV value for B */
4627 m = B[2] < B[1]? B[2] : B[1]; if(B[0] < m) m = B[0];
4628 vB = B[2] > B[1]? B[2] : B[1]; if(B[0] > vB) vB = B[0];
4629 return vA - vB;
4630}
4632/* create sorted list of colors */
4633static uint32_t *_m3d_addcmap(uint32_t *cmap, uint32_t *numcmap, uint32_t color)
4634{
4635 uint32_t i;
4636 if(cmap) {
4637 for(i = 0; i < *numcmap; i++)
4638 if(cmap[i] == color) return cmap;
4639 }
4640 cmap = (uint32_t*)M3D_REALLOC(cmap, ((*numcmap) + 1) * sizeof(uint32_t));
4641 for(i = 0; i < *numcmap && _m3d_cmapcmp(&color, &cmap[i]) > 0; i++);
4642 if(i < *numcmap) memmove(&cmap[i+1], &cmap[i], ((*numcmap) - i)*sizeof(uint32_t));
4643 cmap[i] = color;
4644 (*numcmap)++;
4645 return cmap;
4646}
4648/* look up a color and return its index */
4649static uint32_t _m3d_cmapidx(uint32_t *cmap, uint32_t numcmap, uint32_t color)
4650{
4651 uint32_t i;
4652 if(numcmap >= 65536)
4653 return color;
4654 for(i = 0; i < numcmap; i++)
4655 if(cmap[i] == color) return i;
4656 return 0;
4657}
4659/* add index to output */
4660static unsigned char *_m3d_addidx(unsigned char *out, char type, uint32_t idx) {
4661 switch(type) {
4662 case 1: *out++ = (uint8_t)(idx); break;
4663 case 2: *((uint16_t*)out) = (uint16_t)(idx); out += 2; break;
4664 case 4: *((uint32_t*)out) = (uint32_t)(idx); out += 4; break;
4665 /* case 0: case 8: break; */
4666 }
4667 return out;
4668}
4670/* round a vertex position */
4671static void _m3d_round(int quality, m3dv_t *src, m3dv_t *dst)
4672{
4673 _register int t;
4674 /* copy additional attributes */
4675 if(src != dst) memcpy(dst, src, sizeof(m3dv_t));
4676 /* round according to quality */
4677 switch(quality) {
4678 case M3D_EXP_INT8:
4679 t = (int)(src->x * 127 + (src->x >= 0 ? (M3D_FLOAT)0.5 : (M3D_FLOAT)-0.5)); dst->x = (M3D_FLOAT)t / (M3D_FLOAT)127.0;
4680 t = (int)(src->y * 127 + (src->y >= 0 ? (M3D_FLOAT)0.5 : (M3D_FLOAT)-0.5)); dst->y = (M3D_FLOAT)t / (M3D_FLOAT)127.0;
4681 t = (int)(src->z * 127 + (src->z >= 0 ? (M3D_FLOAT)0.5 : (M3D_FLOAT)-0.5)); dst->z = (M3D_FLOAT)t / (M3D_FLOAT)127.0;
4682 t = (int)(src->w * 127 + (src->w >= 0 ? (M3D_FLOAT)0.5 : (M3D_FLOAT)-0.5)); dst->w = (M3D_FLOAT)t / (M3D_FLOAT)127.0;
4683 break;
4684 case M3D_EXP_INT16:
4685 t = (int)(src->x * 32767 + (src->x >= 0 ? (M3D_FLOAT)0.5 : (M3D_FLOAT)-0.5)); dst->x = (M3D_FLOAT)t / (M3D_FLOAT)32767.0;
4686 t = (int)(src->y * 32767 + (src->y >= 0 ? (M3D_FLOAT)0.5 : (M3D_FLOAT)-0.5)); dst->y = (M3D_FLOAT)t / (M3D_FLOAT)32767.0;
4687 t = (int)(src->z * 32767 + (src->z >= 0 ? (M3D_FLOAT)0.5 : (M3D_FLOAT)-0.5)); dst->z = (M3D_FLOAT)t / (M3D_FLOAT)32767.0;
4688 t = (int)(src->w * 32767 + (src->w >= 0 ? (M3D_FLOAT)0.5 : (M3D_FLOAT)-0.5)); dst->w = (M3D_FLOAT)t / (M3D_FLOAT)32767.0;
4689 break;
4690 }
4691 if(dst->x == (M3D_FLOAT)-0.0) dst->x = (M3D_FLOAT)0.0;
4692 if(dst->y == (M3D_FLOAT)-0.0) dst->y = (M3D_FLOAT)0.0;
4693 if(dst->z == (M3D_FLOAT)-0.0) dst->z = (M3D_FLOAT)0.0;
4694 if(dst->w == (M3D_FLOAT)-0.0) dst->w = (M3D_FLOAT)0.0;
4695}
4697#ifdef M3D_ASCII
4698/* add a bone to ascii output */
4699static char *_m3d_prtbone(char *ptr, m3db_t *bone, M3D_INDEX numbone, M3D_INDEX parent, uint32_t level, M3D_INDEX *vrtxidx)
4700{
4701 uint32_t i, j;
4702 char *sn;
4704 if(level > M3D_BONEMAXLEVEL || !bone) return ptr;
4705 for(i = 0; i < numbone; i++) {
4706 if(bone[i].parent == parent) {
4707 for(j = 0; j < level; j++) *ptr++ = '/';
4708 sn = _m3d_safestr(bone[i].name, 0);
4709 ptr += sprintf(ptr, "%d %d %s\r\n", vrtxidx[bone[i].pos], vrtxidx[bone[i].ori], sn);
4710 M3D_FREE(sn);
4711 ptr = _m3d_prtbone(ptr, bone, numbone, i, level + 1, vrtxidx);
4712 }
4713 }
4714 return ptr;
4715}
4716#endif
4718/**
4719 * Function to encode an in-memory model into on storage Model 3D format
4720 */
4721unsigned char *m3d_save(m3d_t *model, int quality, int flags, unsigned int *size)
4722{
4723#ifdef M3D_ASCII
4724 const char *ol;
4725 char *ptr;
4726#endif
4727 char vc_s, vi_s, si_s, ci_s, ti_s, bi_s, nb_s, sk_s, fc_s, hi_s, fi_s, vd_s, vp_s;
4728 char *sn = NULL, *sl = NULL, *sa = NULL, *sd = NULL;
4729 unsigned char *out = NULL, *z = NULL, weights[M3D_NUMBONE < 8 ? 8 : M3D_NUMBONE], *norm = NULL;
4730 unsigned int i, j, k, l, n, o, len, chunklen, *length;
4731 int maxvox = 0, minvox = 0;
4732 M3D_FLOAT scale = (M3D_FLOAT)0.0, min_x, max_x, min_y, max_y, min_z, max_z, mw;
4733 M3D_INDEX last, *vrtxidx = NULL, *mtrlidx = NULL, *tmapidx = NULL, *skinidx = NULL;
4734#ifdef M3D_VERTEXMAX
4735 M3D_INDEX lastp;
4736#endif
4737 uint32_t idx, numcmap = 0, *cmap = NULL, numvrtx = 0, maxvrtx = 0, numtmap = 0, maxtmap = 0, numproc = 0;
4738 uint32_t numskin = 0, maxskin = 0, numstr = 0, maxt = 0, maxbone = 0, numgrp = 0, maxgrp = 0, *grpidx = NULL;
4739 uint8_t *opa = NULL;
4740 m3dcd_t *cd;
4741 m3dc_t *cmd;
4742 m3dstr_t *str = NULL;
4743 m3dvsave_t *vrtx = NULL, vertex;
4744 m3dtisave_t *tmap = NULL, tcoord;
4745 m3dssave_t *skin = NULL, sk;
4746 m3dfsave_t *face = NULL;
4747 m3dhdr_t *h = NULL;
4748 m3dm_t *m;
4749 m3da_t *a;
4751 if(!model) {
4752 if(size) *size = 0;
4753 return NULL;
4754 }
4755 model->errcode = M3D_SUCCESS;
4756#ifdef M3D_ASCII
4757 if(flags & M3D_EXP_ASCII) quality = M3D_EXP_DOUBLE;
4758#endif
4759 vrtxidx = (M3D_INDEX*)M3D_MALLOC(model->numvertex * sizeof(M3D_INDEX));
4760 if(!vrtxidx) goto memerr;
4761 memset(vrtxidx, 255, model->numvertex * sizeof(M3D_INDEX));
4762 if(model->numvertex && !(flags & M3D_EXP_NONORMAL)){
4763 norm = (unsigned char*)M3D_MALLOC(model->numvertex * sizeof(unsigned char));
4764 if(!norm) goto memerr;
4765 memset(norm, 0, model->numvertex * sizeof(unsigned char));
4766 }
4767 if(model->nummaterial && !(flags & M3D_EXP_NOMATERIAL)) {
4768 mtrlidx = (M3D_INDEX*)M3D_MALLOC(model->nummaterial * sizeof(M3D_INDEX));
4769 if(!mtrlidx) goto memerr;
4770 memset(mtrlidx, 255, model->nummaterial * sizeof(M3D_INDEX));
4771 opa = (uint8_t*)M3D_MALLOC(model->nummaterial * 2 * sizeof(M3D_INDEX));
4772 if(!opa) goto memerr;
4773 memset(opa, 255, model->nummaterial * 2 * sizeof(M3D_INDEX));
4774 }
4775 if(model->numtmap && !(flags & M3D_EXP_NOTXTCRD)) {
4776 tmapidx = (M3D_INDEX*)M3D_MALLOC(model->numtmap * sizeof(M3D_INDEX));
4777 if(!tmapidx) goto memerr;
4778 memset(tmapidx, 255, model->numtmap * sizeof(M3D_INDEX));
4779 }
4780 /** collect array elements that are actually referenced **/
4781 if(!(flags & M3D_EXP_NOFACE)) {
4782 /* face */
4783 if(model->numface && model->face) {
4784 M3D_LOG("Processing mesh face");
4785 face = (m3dfsave_t*)M3D_MALLOC(model->numface * sizeof(m3dfsave_t));
4786 if(!face) goto memerr;
4787 for(i = 0; i < model->numface; i++) {
4788 memcpy(&face[i].data, &model->face[i], sizeof(m3df_t));
4789 face[i].group = 0;
4790 face[i].opacity = 255;
4791 if(!(flags & M3D_EXP_NOMATERIAL) && model->face[i].materialid < model->nummaterial) {
4792 if(model->material[model->face[i].materialid].numprop) {
4793 mtrlidx[model->face[i].materialid] = 0;
4794 if(opa[model->face[i].materialid * 2]) {
4795 m = &model->material[model->face[i].materialid];
4796 for(j = 0; j < m->numprop; j++)
4797 if(m->prop[j].type == m3dp_Kd) {
4798 opa[model->face[i].materialid * 2 + 1] = ((uint8_t*)&m->prop[j].value.color)[3];
4799 break;
4800 }
4801 for(j = 0; j < m->numprop; j++)
4802 if(m->prop[j].type == m3dp_d) {
4803 opa[model->face[i].materialid * 2 + 1] = (uint8_t)(m->prop[j].value.fnum * 255);
4804 break;
4805 }
4806 opa[model->face[i].materialid * 2] = 0;
4807 }
4808 face[i].opacity = opa[model->face[i].materialid * 2 + 1];
4809 } else
4810 face[i].data.materialid = M3D_UNDEF;
4811 }
4812 for(j = 0; j < 3; j++) {
4813 k = model->face[i].vertex[j];
4814 if(k < model->numvertex)
4815 vrtxidx[k] = 0;
4816 if(!(flags & M3D_EXP_NOCMAP)) {
4817 cmap = _m3d_addcmap(cmap, &numcmap, model->vertex[k].color);
4818 if(!cmap) goto memerr;
4819 }
4820 k = model->face[i].normal[j];
4821 if(k < model->numvertex && !(flags & M3D_EXP_NONORMAL)) {
4822 vrtxidx[k] = 0;
4823 norm[k] = 1;
4824 }
4825 k = model->face[i].texcoord[j];
4826 if(k < model->numtmap && !(flags & M3D_EXP_NOTXTCRD))
4827 tmapidx[k] = 0;
4828#ifdef M3D_VERTEXMAX
4829 k = model->face[i].vertmax[j];
4830 if(k < model->numvertex && !(flags & M3D_EXP_NOVRTMAX))
4831 vrtxidx[k] = 0;
4832#endif
4833 }
4834 /* convert from CW to CCW */
4835 if(flags & M3D_EXP_IDOSUCK) {
4836 j = face[i].data.vertex[1];
4837 face[i].data.vertex[1] = face[i].data.vertex[2];
4838 face[i].data.vertex[2] = j;
4839 j = face[i].data.normal[1];
4840 face[i].data.normal[1] = face[i].data.normal[2];
4841 face[i].data.normal[2] = j;
4842 j = face[i].data.texcoord[1];
4843 face[i].data.texcoord[1] = face[i].data.texcoord[2];
4844 face[i].data.texcoord[2] = j;
4845#ifdef M3D_VERTEXMAX
4846 j = face[i].data.vertmax[1];
4847 face[i].data.vertmax[1] = face[i].data.vertmax[2];
4848 face[i].data.vertmax[2] = j;
4849#endif
4850 }
4851 }
4852 }
4853 if((model->numvoxtype && model->voxtype) || (model->numvoxel && model->voxel)) {
4854 M3D_LOG("Processing voxel face");
4855 for(i = 0; i < model->numvoxtype; i++) {
4856 str = _m3d_addstr(str, &numstr, model->voxtype[i].name);
4857 if(model->voxtype[i].name && !str) goto memerr;
4858 if(!(flags & M3D_EXP_NOCMAP)) {
4859 cmap = _m3d_addcmap(cmap, &numcmap, model->voxtype[i].color);
4860 if(!cmap) goto memerr;
4861 }
4862 for(j = 0; j < model->voxtype[i].numitem; j++) {
4863 str = _m3d_addstr(str, &numstr, model->voxtype[i].item[j].name);
4864 if(model->voxtype[i].item[j].name && !str) goto memerr;
4865 }
4866 }
4867 for(i = 0; i < model->numvoxel; i++) {
4868 str = _m3d_addstr(str, &numstr, model->voxel[i].name);
4869 if(model->voxel[i].name && !str) goto memerr;
4870 if(model->voxel[i].x < minvox) minvox = model->voxel[i].x;
4871 if(model->voxel[i].x + (int)model->voxel[i].w > maxvox) maxvox = model->voxel[i].x + model->voxel[i].w;
4872 if(model->voxel[i].y < minvox) minvox = model->voxel[i].y;
4873 if(model->voxel[i].y + (int)model->voxel[i].h > maxvox) maxvox = model->voxel[i].y + model->voxel[i].h;
4874 if(model->voxel[i].z < minvox) minvox = model->voxel[i].z;
4875 if(model->voxel[i].z + (int)model->voxel[i].d > maxvox) maxvox = model->voxel[i].z + model->voxel[i].d;
4876 }
4877 }
4878 if(model->numshape && model->shape) {
4879 M3D_LOG("Processing shape face");
4880 for(i = 0; i < model->numshape; i++) {
4881 if(!model->shape[i].numcmd) continue;
4882 str = _m3d_addstr(str, &numstr, model->shape[i].name);
4883 if(model->shape[i].name && !str) goto memerr;
4884 for(j = 0; j < model->shape[i].numcmd; j++) {
4885 cmd = &model->shape[i].cmd[j];
4886 if(cmd->type >= (unsigned int)(sizeof(m3d_commandtypes)/sizeof(m3d_commandtypes[0])) || !cmd->arg)
4887 continue;
4888 if(cmd->type == m3dc_mesh) {
4889 if(numgrp + 2 < maxgrp) {
4890 maxgrp += 1024;
4891 grpidx = (uint32_t*)realloc(grpidx, maxgrp * sizeof(uint32_t));
4892 if(!grpidx) goto memerr;
4893 if(!numgrp) {
4894 grpidx[0] = 0;
4895 grpidx[1] = model->numface;
4896 numgrp += 2;
4897 }
4898 }
4899 grpidx[numgrp + 0] = cmd->arg[0];
4900 grpidx[numgrp + 1] = cmd->arg[0] + cmd->arg[1];
4901 numgrp += 2;
4902 }
4903 cd = &m3d_commandtypes[cmd->type];
4904 for(k = n = 0, l = cd->p; k < l; k++)
4905 switch(cd->a[((k - n) % (cd->p - n)) + n]) {
4906 case m3dcp_mi_t:
4907 if(!(flags & M3D_EXP_NOMATERIAL) && cmd->arg[k] < model->nummaterial)
4908 mtrlidx[cmd->arg[k]] = 0;
4909 break;
4910 case m3dcp_ti_t:
4911 if(!(flags & M3D_EXP_NOTXTCRD) && cmd->arg[k] < model->numtmap)
4912 tmapidx[cmd->arg[k]] = 0;
4913 break;
4914 case m3dcp_qi_t:
4915 case m3dcp_vi_t:
4916 if(cmd->arg[k] < model->numvertex)
4917 vrtxidx[cmd->arg[k]] = 0;
4918 break;
4919 case m3dcp_va_t:
4920 n = k + 1; l += (cmd->arg[k] - 1) * (cd->p - k - 1);
4921 break;
4922 }
4923 }
4924 }
4925 }
4926 if(model->numface && face) {
4927 if(numgrp && grpidx) {
4928 qsort(grpidx, numgrp, sizeof(uint32_t), _m3d_grpcmp);
4929 for(i = j = 0; i < model->numface && j < numgrp; i++) {
4930 while(j < numgrp && grpidx[j] < i) j++;
4931 face[i].group = j;
4932 }
4933 }
4934 qsort(face, model->numface, sizeof(m3dfsave_t), _m3d_facecmp);
4935 }
4936 if(grpidx) { M3D_FREE(grpidx); grpidx = NULL; }
4937 if(model->numlabel && model->label) {
4938 M3D_LOG("Processing annotation labels");
4939 for(i = 0; i < model->numlabel; i++) {
4940 str = _m3d_addstr(str, &numstr, model->label[i].name);
4941 str = _m3d_addstr(str, &numstr, model->label[i].lang);
4942 str = _m3d_addstr(str, &numstr, model->label[i].text);
4943 if(!(flags & M3D_EXP_NOCMAP)) {
4944 cmap = _m3d_addcmap(cmap, &numcmap, model->label[i].color);
4945 if(!cmap) goto memerr;
4946 }
4947 if(model->label[i].vertexid < model->numvertex)
4948 vrtxidx[model->label[i].vertexid] = 0;
4949 }
4950 qsort(model->label, model->numlabel, sizeof(m3dl_t), _m3d_lblcmp);
4951 }
4952 } else if(!(flags & M3D_EXP_NOMATERIAL)) {
4953 /* without a face, simply add all materials, because it can be an mtllib */
4954 for(i = 0; i < model->nummaterial; i++)
4955 mtrlidx[i] = i;
4956 }
4957 /* bind-pose skeleton */
4958 if(model->numbone && model->bone && !(flags & M3D_EXP_NOBONE)) {
4959 M3D_LOG("Processing bones");
4960 for(i = 0; i < model->numbone; i++) {
4961 str = _m3d_addstr(str, &numstr, model->bone[i].name);
4962 if(!str) goto memerr;
4963 k = model->bone[i].pos;
4964 if(k < model->numvertex)
4965 vrtxidx[k] = 0;
4966 k = model->bone[i].ori;
4967 if(k < model->numvertex)
4968 vrtxidx[k] = 0;
4969 }
4970 }
4971 /* actions, animated skeleton poses */
4972 if(model->numaction && model->action && !(flags & M3D_EXP_NOACTION)) {
4973 M3D_LOG("Processing action list");
4974 for(j = 0; j < model->numaction; j++) {
4975 a = &model->action[j];
4976 str = _m3d_addstr(str, &numstr, a->name);
4977 if(!str) goto memerr;
4978 if(a->numframe > 65535) a->numframe = 65535;
4979 for(i = 0; i < a->numframe; i++) {
4980 for(l = 0; l < a->frame[i].numtransform; l++) {
4981 k = a->frame[i].transform[l].pos;
4982 if(k < model->numvertex)
4983 vrtxidx[k] = 0;
4984 k = a->frame[i].transform[l].ori;
4985 if(k < model->numvertex)
4986 vrtxidx[k] = 0;
4987 }
4988 if(l > maxt) maxt = l;
4989 }
4990 }
4991 }
4992 /* add colors to color map and texture names to string table */
4993 if(!(flags & M3D_EXP_NOMATERIAL)) {
4994 M3D_LOG("Processing materials");
4995 for(i = k = 0; i < model->nummaterial; i++) {
4996 if(mtrlidx[i] == M3D_UNDEF || !model->material[i].numprop) continue;
4997 mtrlidx[i] = k++;
4998 m = &model->material[i];
4999 str = _m3d_addstr(str, &numstr, m->name);
5000 if(!str) goto memerr;
5001 if(m->prop)
5002 for(j = 0; j < m->numprop; j++) {
5003 if(!(flags & M3D_EXP_NOCMAP) && m->prop[j].type < 128) {
5004 for(l = 0; l < sizeof(m3d_propertytypes)/sizeof(m3d_propertytypes[0]); l++) {
5005 if(m->prop[j].type == m3d_propertytypes[l].id && m3d_propertytypes[l].format == m3dpf_color) {
5006 ((uint8_t*)&m->prop[j].value.color)[3] = opa[i * 2 + 1];
5007 cmap = _m3d_addcmap(cmap, &numcmap, m->prop[j].value.color);
5008 if(!cmap) goto memerr;
5009 break;
5010 }
5011 }
5012 }
5013 if(m->prop[j].type >= 128 && m->prop[j].value.textureid < model->numtexture &&
5014 model->texture[m->prop[j].value.textureid].name) {
5015 str = _m3d_addstr(str, &numstr, model->texture[m->prop[j].value.textureid].name);
5016 if(!str) goto memerr;
5017 }
5018 }
5019 }
5020 }
5021 /* if there's only one black color, don't store it */
5022 if(numcmap == 1 && cmap && !cmap[0]) numcmap = 0;
5024 /** compress lists **/
5025 if(model->numtmap && !(flags & M3D_EXP_NOTXTCRD)) {
5026 M3D_LOG("Compressing tmap");
5027 tmap = (m3dtisave_t*)M3D_MALLOC(model->numtmap * sizeof(m3dtisave_t));
5028 if(!tmap) goto memerr;
5029 for(i = 0; i < model->numtmap; i++) {
5030 if(tmapidx[i] == M3D_UNDEF) continue;
5031 switch(quality) {
5032 case M3D_EXP_INT8:
5033 l = (unsigned int)(model->tmap[i].u * 255); tcoord.data.u = (M3D_FLOAT)l / (M3D_FLOAT)255.0;
5034 l = (unsigned int)(model->tmap[i].v * 255); tcoord.data.v = (M3D_FLOAT)l / (M3D_FLOAT)255.0;
5035 break;
5036 case M3D_EXP_INT16:
5037 l = (unsigned int)(model->tmap[i].u * 65535); tcoord.data.u = (M3D_FLOAT)l / (M3D_FLOAT)65535.0;
5038 l = (unsigned int)(model->tmap[i].v * 65535); tcoord.data.v = (M3D_FLOAT)l / (M3D_FLOAT)65535.0;
5039 break;
5040 default:
5041 tcoord.data.u = model->tmap[i].u;
5042 tcoord.data.v = model->tmap[i].v;
5043 break;
5044 }
5045 if(flags & M3D_EXP_FLIPTXTCRD)
5046 tcoord.data.v = (M3D_FLOAT)1.0 - tcoord.data.v;
5047 tcoord.oldidx = i;
5048 memcpy(&tmap[numtmap++], &tcoord, sizeof(m3dtisave_t));
5049 }
5050 if(numtmap) {
5051 qsort(tmap, numtmap, sizeof(m3dtisave_t), _m3d_ticmp);
5052 memcpy(&tcoord.data, &tmap[0], sizeof(m3dti_t));
5053 for(i = 0; i < numtmap; i++) {
5054 if(memcmp(&tcoord.data, &tmap[i].data, sizeof(m3dti_t))) {
5055 memcpy(&tcoord.data, &tmap[i].data, sizeof(m3dti_t));
5056 maxtmap++;
5057 }
5058 tmap[i].newidx = maxtmap;
5059 tmapidx[tmap[i].oldidx] = maxtmap;
5060 }
5061 maxtmap++;
5062 }
5063 }
5064 if(model->numskin && model->skin && !(flags & M3D_EXP_NOBONE)) {
5065 M3D_LOG("Compressing skin");
5066 skinidx = (M3D_INDEX*)M3D_MALLOC(model->numskin * sizeof(M3D_INDEX));
5067 if(!skinidx) goto memerr;
5068 skin = (m3dssave_t*)M3D_MALLOC(model->numskin * sizeof(m3dssave_t));
5069 if(!skin) goto memerr;
5070 memset(skinidx, 255, model->numskin * sizeof(M3D_INDEX));
5071 for(i = 0; i < model->numvertex; i++) {
5072 if(vrtxidx[i] != M3D_UNDEF && model->vertex[i].skinid < model->numskin)
5073 skinidx[model->vertex[i].skinid] = 0;
5074 }
5075 for(i = 0; i < model->numskin; i++) {
5076 if(skinidx[i] == M3D_UNDEF) continue;
5077 memset(&sk, 0, sizeof(m3dssave_t));
5078 for(j = 0, min_x = (M3D_FLOAT)0.0; j < M3D_NUMBONE && model->skin[i].boneid[j] != M3D_UNDEF; j++) {
5079 sk.data.boneid[j] = model->skin[i].boneid[j];
5080 sk.data.weight[j] = model->skin[i].weight[j] > (M3D_FLOAT)0.0 ? model->skin[i].weight[j] : (M3D_FLOAT)0.01;
5081 min_x += sk.data.weight[j];
5082 }
5083 if(j > maxbone) maxbone = j;
5084 if(min_x != (M3D_FLOAT)1.0 && min_x != (M3D_FLOAT)0.0)
5085 for(j = 0; j < M3D_NUMBONE && sk.data.weight[j] > (M3D_FLOAT)0.0; j++)
5086 sk.data.weight[j] /= min_x;
5087 sk.oldidx = i;
5088 memcpy(&skin[numskin++], &sk, sizeof(m3dssave_t));
5089 }
5090 if(numskin) {
5091 qsort(skin, numskin, sizeof(m3dssave_t), _m3d_skincmp);
5092 memcpy(&sk.data, &skin[0].data, sizeof(m3ds_t));
5093 for(i = 0; i < numskin; i++) {
5094 if(memcmp(&sk.data, &skin[i].data, sizeof(m3ds_t))) {
5095 memcpy(&sk.data, &skin[i].data, sizeof(m3ds_t));
5096 maxskin++;
5097 }
5098 skin[i].newidx = maxskin;
5099 skinidx[skin[i].oldidx] = maxskin;
5100 }
5101 maxskin++;
5102 }
5103 }
5105 M3D_LOG("Compressing vertex list");
5106 min_x = min_y = min_z = (M3D_FLOAT)1e10;
5107 max_x = max_y = max_z = (M3D_FLOAT)-1e10;
5108 if(vrtxidx) {
5109 vrtx = (m3dvsave_t*)M3D_MALLOC(model->numvertex * sizeof(m3dvsave_t));
5110 if(!vrtx) goto memerr;
5111 for(i = numvrtx = 0; i < model->numvertex; i++) {
5112 if(vrtxidx[i] == M3D_UNDEF) continue;
5113 _m3d_round(quality, &model->vertex[i], &vertex.data);
5114 vertex.norm = norm ? norm[i] : 0;
5115 if(vertex.data.skinid != M3D_INDEXMAX && !vertex.norm) {
5116 vertex.data.skinid = vertex.data.skinid != M3D_UNDEF && skinidx ? skinidx[vertex.data.skinid] : M3D_UNDEF;
5117 if(vertex.data.x > max_x) max_x = vertex.data.x;
5118 if(vertex.data.x < min_x) min_x = vertex.data.x;
5119 if(vertex.data.y > max_y) max_y = vertex.data.y;
5120 if(vertex.data.y < min_y) min_y = vertex.data.y;
5121 if(vertex.data.z > max_z) max_z = vertex.data.z;
5122 if(vertex.data.z < min_z) min_z = vertex.data.z;
5123 }
5124#ifdef M3D_VERTEXTYPE
5125 vertex.data.type = 0;
5126#endif
5127 vertex.oldidx = i;
5128 memcpy(&vrtx[numvrtx++], &vertex, sizeof(m3dvsave_t));
5129 }
5130 if(numvrtx) {
5131 qsort(vrtx, numvrtx, sizeof(m3dvsave_t), _m3d_vrtxcmp);
5132 memcpy(&vertex.data, &vrtx[0].data, sizeof(m3dv_t));
5133 for(i = 0; i < numvrtx; i++) {
5134 if(memcmp(&vertex.data, &vrtx[i].data, vrtx[i].norm ? 3 * sizeof(M3D_FLOAT) : sizeof(m3dv_t))) {
5135 memcpy(&vertex.data, &vrtx[i].data, sizeof(m3dv_t));
5136 maxvrtx++;
5137 }
5138 vrtx[i].newidx = maxvrtx;
5139 vrtxidx[vrtx[i].oldidx] = maxvrtx;
5140 }
5141 maxvrtx++;
5142 }
5143 }
5144 if(norm) { M3D_FREE(norm); norm = NULL; }
5146 /* normalize to bounding cube */
5147 if(numvrtx && !(flags & M3D_EXP_NORECALC)) {
5148 M3D_LOG("Normalizing coordinates");
5149 if(min_x < (M3D_FLOAT)0.0) min_x = -min_x;
5150 if(max_x < (M3D_FLOAT)0.0) max_x = -max_x;
5151 if(min_y < (M3D_FLOAT)0.0) min_y = -min_y;
5152 if(max_y < (M3D_FLOAT)0.0) max_y = -max_y;
5153 if(min_z < (M3D_FLOAT)0.0) min_z = -min_z;
5154 if(max_z < (M3D_FLOAT)0.0) max_z = -max_z;
5155 scale = min_x;
5156 if(max_x > scale) scale = max_x;
5157 if(min_y > scale) scale = min_y;
5158 if(max_y > scale) scale = max_y;
5159 if(min_z > scale) scale = min_z;
5160 if(max_z > scale) scale = max_z;
5161 if(scale <= (M3D_FLOAT)0.0) scale = (M3D_FLOAT)1.0;
5162 if(scale != (M3D_FLOAT)1.0) {
5163 for(i = 0; i < numvrtx; i++) {
5164 if(vrtx[i].data.skinid == M3D_INDEXMAX) continue;
5165 vrtx[i].data.x /= scale;
5166 vrtx[i].data.y /= scale;
5167 vrtx[i].data.z /= scale;
5168 }
5169 }
5170 }
5171 if(model->scale > (M3D_FLOAT)0.0) scale = model->scale;
5172 if(scale <= (M3D_FLOAT)0.0) scale = (M3D_FLOAT)1.0;
5174 /* meta info */
5175 sn = _m3d_safestr(model->name && *model->name ? model->name : (char*)"(noname)", 2);
5176 sl = _m3d_safestr(model->license ? model->license : (char*)"MIT", 2);
5177 sa = _m3d_safestr(model->author ? model->author : getenv("LOGNAME"), 2);
5178 if(!sn || !sl || !sa) {
5179memerr: if(vrtxidx) M3D_FREE(vrtxidx);
5180 if(mtrlidx) M3D_FREE(mtrlidx);
5181 if(tmapidx) M3D_FREE(tmapidx);
5182 if(skinidx) M3D_FREE(skinidx);
5183 if(grpidx) M3D_FREE(grpidx);
5184 if(norm) M3D_FREE(norm);
5185 if(face) M3D_FREE(face);
5186 if(cmap) M3D_FREE(cmap);
5187 if(tmap) M3D_FREE(tmap);
5188 if(skin) M3D_FREE(skin);
5189 if(str) M3D_FREE(str);
5190 if(vrtx) M3D_FREE(vrtx);
5191 if(sn) M3D_FREE(sn);
5192 if(sl) M3D_FREE(sl);
5193 if(sa) M3D_FREE(sa);
5194 if(sd) M3D_FREE(sd);
5195 if(out) M3D_FREE(out);
5196 if(opa) free(opa);
5197 if(h) M3D_FREE(h);
5198 M3D_LOG("Out of memory");
5199 model->errcode = M3D_ERR_ALLOC;
5200 return NULL;
5201 }
5203 M3D_LOG("Serializing model");
5204#ifdef M3D_ASCII
5205 if(flags & M3D_EXP_ASCII) {
5206 /* use CRLF to make model creators on Win happy... */
5207 sd = _m3d_safestr(model->desc, 1);
5208 if(!sd) goto memerr;
5209 ol = setlocale(LC_NUMERIC, NULL);
5210 setlocale(LC_NUMERIC, "C");
5211 /* header */
5212 len = 64 + (unsigned int)(strlen(sn) + strlen(sl) + strlen(sa) + strlen(sd));
5213 out = (unsigned char*)M3D_MALLOC(len);
5214 if(!out) { setlocale(LC_NUMERIC, ol); goto memerr; }
5215 ptr = (char*)out;
5216 ptr += sprintf(ptr, "3dmodel %g\r\n%s\r\n%s\r\n%s\r\n%s\r\n\r\n", scale,
5217 sn, sl, sa, sd);
5218 M3D_FREE(sl); M3D_FREE(sa); M3D_FREE(sd);
5219 sl = sa = sd = NULL;
5220 /* preview chunk */
5221 if(model->preview.data && model->preview.length) {
5222 sl = _m3d_safestr(sn, 0);
5223 if(sl) {
5224/* gcc thinks that "ptr is used after free", well, gcc is simply wrong. */
5225#ifdef __GNUC__
5226#pragma GCC diagnostic push
5227#pragma GCC diagnostic ignored "-Wuse-after-free"
5228#endif
5229 ptr -= (uintptr_t)out; len = (unsigned int)((uintptr_t)ptr + (uintptr_t)20 + strlen(sl));
5230 out = (unsigned char*)M3D_REALLOC(out, len); ptr += (uintptr_t)out;
5231#ifdef __GNUC__
5232#pragma GCC diagnostic pop
5233#endif
5234 if(!out) { setlocale(LC_NUMERIC, ol); goto memerr; }
5235 ptr += sprintf(ptr, "Preview\r\n%s.png\r\n\r\n", sl);
5236 M3D_FREE(sl); sl = NULL;
5237 }
5238 }
5239 M3D_FREE(sn); sn = NULL;
5240 /* texture map */
5241 if(numtmap && tmap && !(flags & M3D_EXP_NOTXTCRD) && !(flags & M3D_EXP_NOFACE)) {
5242/* interestingly gcc does not complain about "ptr is used after free" here, although the code is 100% the same */
5243 ptr -= (uintptr_t)out; len = (unsigned int)((uintptr_t)ptr + (uintptr_t)(maxtmap * 32) + (uintptr_t)12);
5244 out = (unsigned char*)M3D_REALLOC(out, len); ptr += (uintptr_t)out;
5245 if(!out) { setlocale(LC_NUMERIC, ol); goto memerr; }
5246 ptr += sprintf(ptr, "Textmap\r\n");
5247 last = M3D_UNDEF;
5248 for(i = 0; i < numtmap; i++) {
5249 if(tmap[i].newidx == last) continue;
5250 last = tmap[i].newidx;
5251 ptr += sprintf(ptr, "%g %g\r\n", tmap[i].data.u, tmap[i].data.v);
5252 }
5253 ptr += sprintf(ptr, "\r\n");
5254 }
5255 /* vertex chunk */
5256 if(numvrtx && vrtx && !(flags & M3D_EXP_NOFACE)) {
5257 ptr -= (uintptr_t)out; len = (unsigned int)((uintptr_t)ptr + (uintptr_t)(maxvrtx * 128) + (uintptr_t)10);
5258 out = (unsigned char*)M3D_REALLOC(out, len); ptr += (uintptr_t)out;
5259 if(!out) { setlocale(LC_NUMERIC, ol); goto memerr; }
5260 ptr += sprintf(ptr, "Vertex\r\n");
5261 last = M3D_UNDEF;
5262 for(i = 0; i < numvrtx; i++) {
5263 if(vrtx[i].newidx == last) continue;
5264 last = vrtx[i].newidx;
5265 ptr += sprintf(ptr, "%g %g %g %g", vrtx[i].data.x, vrtx[i].data.y, vrtx[i].data.z, vrtx[i].data.w);
5266 if(!(flags & M3D_EXP_NOCMAP) && vrtx[i].data.color)
5267 ptr += sprintf(ptr, " #%08x", vrtx[i].data.color);
5268 if(!(flags & M3D_EXP_NOBONE) && model->numbone && maxskin && vrtx[i].data.skinid < M3D_INDEXMAX) {
5269 if(skin[vrtx[i].data.skinid].data.weight[0] == (M3D_FLOAT)1.0)
5270 ptr += sprintf(ptr, " %d", skin[vrtx[i].data.skinid].data.boneid[0]);
5271 else
5272 for(j = 0; j < M3D_NUMBONE && skin[vrtx[i].data.skinid].data.boneid[j] != M3D_UNDEF &&
5273 skin[vrtx[i].data.skinid].data.weight[j] > (M3D_FLOAT)0.0; j++)
5274 ptr += sprintf(ptr, " %d:%g", skin[vrtx[i].data.skinid].data.boneid[j],
5275 skin[vrtx[i].data.skinid].data.weight[j]);
5276 }
5277 ptr += sprintf(ptr, "\r\n");
5278 }
5279 ptr += sprintf(ptr, "\r\n");
5280 }
5281 /* bones chunk */
5282 if(model->numbone && model->bone && !(flags & M3D_EXP_NOBONE)) {
5283 ptr -= (uintptr_t)out; len = (unsigned int)((uintptr_t)ptr + (uintptr_t)9);
5284 for(i = 0; i < model->numbone; i++) {
5285 len += (unsigned int)strlen(model->bone[i].name) + 128;
5286 }
5287 out = (unsigned char*)M3D_REALLOC(out, len); ptr += (uintptr_t)out;
5288 if(!out) { setlocale(LC_NUMERIC, ol); goto memerr; }
5289 ptr += sprintf(ptr, "Bones\r\n");
5290 ptr = _m3d_prtbone(ptr, model->bone, model->numbone, M3D_UNDEF, 0, vrtxidx);
5291 ptr += sprintf(ptr, "\r\n");
5292 }
5293 /* materials */
5294 if(model->nummaterial && !(flags & M3D_EXP_NOMATERIAL)) {
5295 for(j = 0; j < model->nummaterial; j++) {
5296 if(mtrlidx[j] == M3D_UNDEF || !model->material[j].numprop || !model->material[j].prop) continue;
5297 m = &model->material[j];
5298 sn = _m3d_safestr(m->name, 0);
5299 if(!sn) { setlocale(LC_NUMERIC, ol); goto memerr; }
5300 ptr -= (uintptr_t)out; len = (unsigned int)((uintptr_t)ptr + (uintptr_t)strlen(sn) + (uintptr_t)12);
5301 for(i = 0; i < m->numprop; i++) {
5302 if(m->prop[i].type < 128)
5303 len += 32;
5304 else if(m->prop[i].value.textureid < model->numtexture && model->texture[m->prop[i].value.textureid].name)
5305 len += (unsigned int)strlen(model->texture[m->prop[i].value.textureid].name) + 16;
5306 }
5307 out = (unsigned char*)M3D_REALLOC(out, len); ptr += (uintptr_t)out;
5308 if(!out) { setlocale(LC_NUMERIC, ol); goto memerr; }
5309 ptr += sprintf(ptr, "Material %s\r\n", sn);
5310 M3D_FREE(sn); sn = NULL;
5311 for(i = 0; i < m->numprop; i++) {
5312 k = 256;
5313 if(m->prop[i].type >= 128) {
5314 for(l = 0; l < sizeof(m3d_propertytypes)/sizeof(m3d_propertytypes[0]); l++)
5315 if(m->prop[i].type == m3d_propertytypes[l].id) {
5316 sn = m3d_propertytypes[l].key;
5317 break;
5318 }
5319 if(!sn)
5320 for(l = 0; l < sizeof(m3d_propertytypes)/sizeof(m3d_propertytypes[0]); l++)
5321 if(m->prop[i].type - 128 == m3d_propertytypes[l].id) {
5322 sn = m3d_propertytypes[l].key;
5323 break;
5324 }
5325 k = sn ? m3dpf_map : 256;
5326 } else {
5327 for(l = 0; l < sizeof(m3d_propertytypes)/sizeof(m3d_propertytypes[0]); l++)
5328 if(m->prop[i].type == m3d_propertytypes[l].id) {
5329 sn = m3d_propertytypes[l].key;
5330 k = m3d_propertytypes[l].format;
5331 break;
5332 }
5333 }
5334 switch(k) {
5335 case m3dpf_color: ptr += sprintf(ptr, "%s #%08x\r\n", sn, m->prop[i].value.color); break;
5336 case m3dpf_uint8:
5337 case m3dpf_uint16:
5338 case m3dpf_uint32: ptr += sprintf(ptr, "%s %d\r\n", sn, m->prop[i].value.num); break;
5339 case m3dpf_float: ptr += sprintf(ptr, "%s %g\r\n", sn, m->prop[i].value.fnum); break;
5340 case m3dpf_map:
5341 if(m->prop[i].value.textureid < model->numtexture &&
5342 model->texture[m->prop[i].value.textureid].name) {
5343 sl = _m3d_safestr(model->texture[m->prop[i].value.textureid].name, 0);
5344 if(!sl) { setlocale(LC_NUMERIC, ol); goto memerr; }
5345 if(*sl)
5346 ptr += sprintf(ptr, "map_%s %s\r\n", sn, sl);
5347 M3D_FREE(sn); M3D_FREE(sl); sl = NULL;
5348 }
5349 break;
5350 }
5351 sn = NULL;
5352 }
5353 ptr += sprintf(ptr, "\r\n");
5354 }
5355 }
5356 /* procedural face */
5357 if(model->numinlined && model->inlined && !(flags & M3D_EXP_NOFACE)) {
5358 /* all inlined assets which are not textures should be procedural surfaces */
5359 for(j = 0; j < model->numinlined; j++) {
5360 if(!model->inlined[j].name || !*model->inlined[j].name || !model->inlined[j].length || !model->inlined[j].data ||
5361 (model->inlined[j].data[1] == 'P' && model->inlined[j].data[2] == 'N' && model->inlined[j].data[3] == 'G'))
5362 continue;
5363 for(i = k = 0; i < model->numtexture; i++) {
5364 if(!strcmp(model->inlined[j].name, model->texture[i].name)) { k = 1; break; }
5365 }
5366 if(k) continue;
5367 sn = _m3d_safestr(model->inlined[j].name, 0);
5368 if(!sn) { setlocale(LC_NUMERIC, ol); goto memerr; }
5369 ptr -= (uintptr_t)out; len = (unsigned int)((uintptr_t)ptr + (uintptr_t)strlen(sn) + (uintptr_t)18);
5370 out = (unsigned char*)M3D_REALLOC(out, len); ptr += (uintptr_t)out;
5371 if(!out) { setlocale(LC_NUMERIC, ol); goto memerr; }
5372 ptr += sprintf(ptr, "Procedural\r\n%s\r\n\r\n", sn);
5373 M3D_FREE(sn); sn = NULL;
5374 }
5375 }
5376 /* mesh face */
5377 if(model->numface && face && !(flags & M3D_EXP_NOFACE)) {
5378 ptr -= (uintptr_t)out; len = (unsigned int)((uintptr_t)ptr + (uintptr_t)(model->numface * 128) + (uintptr_t)6);
5379 last = M3D_UNDEF;
5380#ifdef M3D_VERTEXMAX
5381 lastp = M3D_UNDEF;
5382#endif
5383 if(!(flags & M3D_EXP_NOMATERIAL))
5384 for(i = 0; i < model->numface; i++) {
5385 j = face[i].data.materialid < model->nummaterial ? face[i].data.materialid : M3D_UNDEF;
5386 if(j != last) {
5387 last = j;
5388 if(last < model->nummaterial)
5389 len += (unsigned int)strlen(model->material[last].name);
5390 len += 6;
5391 }
5392#ifdef M3D_VERTEXMAX
5393 j = face[i].data.paramid < model->numparam ? face[i].data.paramid : M3D_UNDEF;
5394 if(j != lastp) {
5395 lastp = j;
5396 if(lastp < model->numparam)
5397 len += (unsigned int)strlen(model->param[lastp].name);
5398 len += 6;
5399 }
5400#endif
5401 }
5402 out = (unsigned char*)M3D_REALLOC(out, len); ptr += (uintptr_t)out;
5403 if(!out) { setlocale(LC_NUMERIC, ol); goto memerr; }
5404 ptr += sprintf(ptr, "Mesh\r\n");
5405 last = M3D_UNDEF;
5406#ifdef M3D_VERTEXMAX
5407 lastp = M3D_UNDEF;
5408#endif
5409 for(i = 0; i < model->numface; i++) {
5410 j = face[i].data.materialid < model->nummaterial ? face[i].data.materialid : M3D_UNDEF;
5411 if(!(flags & M3D_EXP_NOMATERIAL) && j != last) {
5412 last = j;
5413 if(last < model->nummaterial) {
5414 sn = _m3d_safestr(model->material[last].name, 0);
5415 if(!sn) { setlocale(LC_NUMERIC, ol); goto memerr; }
5416 ptr += sprintf(ptr, "use %s\r\n", sn);
5417 M3D_FREE(sn); sn = NULL;
5418 } else
5419 ptr += sprintf(ptr, "use\r\n");
5420 }
5421#ifdef M3D_VERTEXMAX
5422 j = face[i].data.paramid < model->numparam ? face[i].data.paramid : M3D_UNDEF;
5423 if(!(flags & M3D_EXP_NOVRTMAX) && j != lastp) {
5424 lastp = j;
5425 if(lastp < model->numparam) {
5426 sn = _m3d_safestr(model->param[lastp].name, 0);
5427 if(!sn) { setlocale(LC_NUMERIC, ol); goto memerr; }
5428 ptr += sprintf(ptr, "par %s\r\n", sn);
5429 M3D_FREE(sn); sn = NULL;
5430 } else
5431 ptr += sprintf(ptr, "par\r\n");
5432 }
5433#endif
5434 /* hardcoded triangles. Should be repeated as many times as the number of edges in polygon */
5435 for(j = 0; j < 3; j++) {
5436 ptr += sprintf(ptr, "%s%d", j?" ":"", vrtxidx[face[i].data.vertex[j]]);
5437 k = l = M3D_NOTDEFINED;
5438 if(!(flags & M3D_EXP_NOTXTCRD) && (face[i].data.texcoord[j] != M3D_UNDEF) &&
5439 (tmapidx[face[i].data.texcoord[j]] != M3D_UNDEF)) {
5440 k = tmapidx[face[i].data.texcoord[j]];
5441 ptr += sprintf(ptr, "/%d", k);
5442 }
5443 if(!(flags & M3D_EXP_NONORMAL) && (face[i].data.normal[j] != M3D_UNDEF)) {
5444 l = vrtxidx[face[i].data.normal[j]];
5445 ptr += sprintf(ptr, "%s/%d", k == M3D_NOTDEFINED? "/" : "", l);
5446 }
5447#ifdef M3D_VERTEXMAX
5448 if(!(flags & M3D_EXP_NOVRTMAX) && (face[i].data.vertmax[j] != M3D_UNDEF)) {
5449 ptr += sprintf(ptr, "%s%s/%d", k == M3D_NOTDEFINED? "/" : "", l == M3D_NOTDEFINED? "/" : "",
5450 vrtxidx[face[i].data.vertmax[j]]);
5451 }
5452#endif
5453 }
5454 ptr += sprintf(ptr, "\r\n");
5455 }
5456 ptr += sprintf(ptr, "\r\n");
5457 }
5458 /* voxel face */
5459 if(model->numvoxtype && model->voxtype && !(flags & M3D_EXP_NOFACE)) {
5460 ptr -= (uintptr_t)out; len = (unsigned int)((uintptr_t)ptr + (uintptr_t)(model->numvoxtype * 128) + (uintptr_t)10);
5461 for(i = 0; i < model->numvoxtype; i++) {
5462 if(model->voxtype[i].name) len += (unsigned int)strlen(model->voxtype[i].name);
5463 for(j = 0; j < model->voxtype[i].numitem; j++)
5464 if(model->voxtype[i].item[j].name)
5465 len += (unsigned int)strlen(model->voxtype[i].item[j].name) + 6;
5466 }
5467 out = (unsigned char*)M3D_REALLOC(out, len); ptr += (uintptr_t)out;
5468 if(!out) { setlocale(LC_NUMERIC, ol); goto memerr; }
5469 ptr += sprintf(ptr, "VoxTypes\r\n");
5470 for(i = 0; i < model->numvoxtype; i++) {
5471 ptr += sprintf(ptr, "#%08x", model->voxtype[i].color);
5472 if(model->voxtype[i].rotation)
5473 ptr += sprintf(ptr, "/%02x", model->voxtype[i].rotation);
5474 if(model->voxtype[i].voxshape)
5475 ptr += sprintf(ptr, "%s/%03x", model->voxtype[i].rotation ? "" : "/", model->voxtype[i].voxshape);
5476 sn = _m3d_safestr(model->voxtype[i].name, 0);
5477 if(!sn) { setlocale(LC_NUMERIC, ol); goto memerr; }
5478 ptr += sprintf(ptr, " %s", sn && sn[0] ? sn : "-");
5479 M3D_FREE(sn); sn = NULL;
5480 if(!(flags & M3D_EXP_NOBONE) && model->numbone && maxskin && model->voxtype[i].skinid < M3D_INDEXMAX) {
5481 if(skin[skinidx[model->voxtype[i].skinid]].data.weight[0] == (M3D_FLOAT)1.0)
5482 ptr += sprintf(ptr, " %d", skin[skinidx[model->voxtype[i].skinid]].data.boneid[0]);
5483 else
5484 for(j = 0; j < M3D_NUMBONE && skin[skinidx[model->voxtype[i].skinid]].data.boneid[j] != M3D_UNDEF &&
5485 skin[skinidx[model->voxtype[i].skinid]].data.weight[j] > (M3D_FLOAT)0.0; j++)
5486 ptr += sprintf(ptr, " %d:%g", skin[skinidx[model->voxtype[i].skinid]].data.boneid[j],
5487 skin[skinidx[model->voxtype[i].skinid]].data.weight[j]);
5488 }
5489 if(model->voxtype[i].numitem && model->voxtype[i].item) {
5490 for(j = k = 0; j < model->voxtype[i].numitem; j++) {
5491 if(!model->voxtype[i].item[j].count || !model->voxtype[i].item[j].name ||
5492 !model->voxtype[i].item[j].name[0]) continue;
5493 if(!k) { ptr += sprintf(ptr, " {"); k = 1; }
5494 sn = _m3d_safestr(model->voxtype[i].item[j].name, 0);
5495 if(!sn) { setlocale(LC_NUMERIC, ol); goto memerr; }
5496 ptr += sprintf(ptr, " %d %s", model->voxtype[i].item[j].count, sn);
5497 M3D_FREE(sn); sn = NULL;
5498 }
5499 if(k) ptr += sprintf(ptr, " }");
5500 }
5501 while(ptr[-1] == '-' || ptr[-1] == ' ') ptr--;
5502 ptr += sprintf(ptr, "\r\n");
5503 }
5504 ptr += sprintf(ptr, "\r\n");
5505 }
5506 if(model->numvoxel && model->voxel && !(flags & M3D_EXP_NOFACE)) {
5507 for(i = 0; i < model->numvoxel; i++) {
5508 ptr -= (uintptr_t)out; len = (unsigned int)((uintptr_t)ptr + (uintptr_t)128);
5509 if(model->voxel[i].name) len += (unsigned int)strlen(model->voxel[i].name);
5510 len += model->voxel[i].h * ((model->voxel[i].w * 6 + 2) * model->voxel[i].d + 9);
5511 out = (unsigned char*)M3D_REALLOC(out, len); ptr += (uintptr_t)out;
5512 if(!out) { setlocale(LC_NUMERIC, ol); goto memerr; }
5513 ptr += sprintf(ptr, "Voxel");
5514 sn = _m3d_safestr(model->voxel[i].name, 0);
5515 if(!sn) { setlocale(LC_NUMERIC, ol); goto memerr; }
5516 if(sn && sn[0])
5517 ptr += sprintf(ptr, " %s", sn);
5518 M3D_FREE(sn); sn = NULL;
5519 ptr += sprintf(ptr, "\r\n");
5520 if(model->voxel[i].uncertain)
5521 ptr += sprintf(ptr, "uncertain %d %d\r\n", (model->voxel[i].uncertain * 100) / 255, model->voxel[i].groupid);
5522 if(model->voxel[i].x || model->voxel[i].y || model->voxel[i].z)
5523 ptr += sprintf(ptr, "pos %d %d %d\r\n", model->voxel[i].x, model->voxel[i].y, model->voxel[i].z);
5524 ptr += sprintf(ptr, "dim %d %d %d\r\n", model->voxel[i].w, model->voxel[i].h, model->voxel[i].d);
5525 for(j = n = 0; j < model->voxel[i].h; j++) {
5526 ptr += sprintf(ptr, "layer\r\n");
5527 for(k = 0; k < model->voxel[i].d; k++) {
5528 for(l = 0; l < model->voxel[i].w; l++, n++) {
5529 switch(model->voxel[i].data[n]) {
5530 case M3D_VOXCLEAR: *ptr++ = '-'; break;
5531 case M3D_VOXUNDEF: *ptr++ = '.'; break;
5532 default: ptr += sprintf(ptr, "%d", model->voxel[i].data[n]); break;
5533 }
5534 *ptr++ = ' ';
5535 }
5536 ptr--;
5537 ptr += sprintf(ptr, "\r\n");
5538 }
5539 }
5540 ptr += sprintf(ptr, "\r\n");
5541 }
5542 }
5543 /* mathematical shapes face */
5544 if(model->numshape && model->numshape && !(flags & M3D_EXP_NOFACE)) {
5545 for(j = 0; j < model->numshape; j++) {
5546 sn = _m3d_safestr(model->shape[j].name, 0);
5547 if(!sn) { setlocale(LC_NUMERIC, ol); goto memerr; }
5548 ptr -= (uintptr_t)out; len = (unsigned int)((uintptr_t)ptr + (uintptr_t)strlen(sn) + (uintptr_t)33);
5549 out = (unsigned char*)M3D_REALLOC(out, len); ptr += (uintptr_t)out;
5550 if(!out) { setlocale(LC_NUMERIC, ol); goto memerr; }
5551 ptr += sprintf(ptr, "Shape %s\r\n", sn);
5552 M3D_FREE(sn); sn = NULL;
5553 if(model->shape[j].group != M3D_UNDEF && !(flags & M3D_EXP_NOBONE))
5554 ptr += sprintf(ptr, "group %d\r\n", model->shape[j].group);
5555 for(i = 0; i < model->shape[j].numcmd; i++) {
5556 cmd = &model->shape[j].cmd[i];
5557 if(cmd->type >= (unsigned int)(sizeof(m3d_commandtypes)/sizeof(m3d_commandtypes[0])) || !cmd->arg)
5558 continue;
5559 cd = &m3d_commandtypes[cmd->type];
5560 ptr -= (uintptr_t)out; len = (unsigned int)((uintptr_t)ptr + (uintptr_t)strlen(cd->key) + (uintptr_t)3);
5561 for(k = 0; k < cd->p; k++)
5562 switch(cd->a[k]) {
5563 case m3dcp_mi_t: if(cmd->arg[k] != M3D_NOTDEFINED) { len += (unsigned int)strlen(model->material[cmd->arg[k]].name) + 1; } break;
5564 case m3dcp_va_t: len += cmd->arg[k] * (cd->p - k - 1) * 16; k = cd->p; break;
5565 default: len += 16; break;
5566 }
5567 out = (unsigned char*)M3D_REALLOC(out, len); ptr += (uintptr_t)out;
5568 if(!out) { setlocale(LC_NUMERIC, ol); goto memerr; }
5569 ptr += sprintf(ptr, "%s", cd->key);
5570 for(k = n = 0, l = cd->p; k < l; k++) {
5571 switch(cd->a[((k - n) % (cd->p - n)) + n]) {
5572 case m3dcp_mi_t:
5573 if(cmd->arg[k] != M3D_NOTDEFINED) {
5574 sn = _m3d_safestr(model->material[cmd->arg[k]].name, 0);
5575 if(!sn) { setlocale(LC_NUMERIC, ol); goto memerr; }
5576 ptr += sprintf(ptr, " %s", sn);
5577 M3D_FREE(sn); sn = NULL;
5578 }
5579 break;
5580 case m3dcp_vc_t: ptr += sprintf(ptr, " %g", *((float*)&cmd->arg[k])); break;
5581 case m3dcp_va_t: ptr += sprintf(ptr, " %d[", cmd->arg[k]);
5582 n = k + 1; l += (cmd->arg[k] - 1) * (cd->p - k - 1);
5583 break;
5584 default: ptr += sprintf(ptr, " %d", cmd->arg[k]); break;
5585 }
5586 }
5587 ptr += sprintf(ptr, "%s\r\n", l > cd->p ? " ]" : "");
5588 }
5589 ptr += sprintf(ptr, "\r\n");
5590 }
5591 }
5592 /* annotation labels */
5593 if(model->numlabel && model->label && !(flags & M3D_EXP_NOFACE)) {
5594 for(i = 0, j = 3, length = NULL; i < model->numlabel; i++) {
5595 if(model->label[i].name) j += (unsigned int)strlen(model->label[i].name);
5596 if(model->label[i].lang) j += (unsigned int)strlen(model->label[i].lang);
5597 if(model->label[i].text) j += (unsigned int)strlen(model->label[i].text);
5598 j += 40;
5599 }
5600 ptr -= (uintptr_t)out; len = (unsigned int)((uintptr_t)ptr + (uintptr_t)j);
5601 out = (unsigned char*)M3D_REALLOC(out, len); ptr += (uintptr_t)out;
5602 if(!out) { setlocale(LC_NUMERIC, ol); goto memerr; }
5603 for(i = 0; i < model->numlabel; i++) {
5604 if(!i || _m3d_strcmp(sl, model->label[i].lang) || _m3d_strcmp(sn, model->label[i].name)) {
5605 sl = model->label[i].lang;
5606 sn = model->label[i].name;
5607 sd = _m3d_safestr(sn, 0);
5608 if(!sd) { setlocale(LC_NUMERIC, ol); sn = sl = NULL; goto memerr; }
5609 if(i) ptr += sprintf(ptr, "\r\n");
5610 ptr += sprintf(ptr, "Labels %s\r\n", sd);
5611 M3D_FREE(sd); sd = NULL;
5612 if(model->label[i].color)
5613 ptr += sprintf(ptr, "color #0x%08x\r\n", model->label[i].color);
5614 if(sl && *sl) {
5615 sd = _m3d_safestr(sl, 0);
5616 if(!sd) { setlocale(LC_NUMERIC, ol); sn = sl = NULL; goto memerr; }
5617 ptr += sprintf(ptr, "lang %s\r\n", sd);
5618 M3D_FREE(sd); sd = NULL;
5619 }
5620 }
5621 sd = _m3d_safestr(model->label[i].text, 2);
5622 if(!sd) { setlocale(LC_NUMERIC, ol); sn = sl = NULL; goto memerr; }
5623 ptr += sprintf(ptr, "%d %s\r\n", model->label[i].vertexid, sd);
5624 M3D_FREE(sd); sd = NULL;
5625 }
5626 ptr += sprintf(ptr, "\r\n");
5627 sn = sl = NULL;
5628 }
5629 /* actions */
5630 if(model->numaction && model->action && !(flags & M3D_EXP_NOACTION)) {
5631 for(j = 0; j < model->numaction; j++) {
5632 a = &model->action[j];
5633 sn = _m3d_safestr(a->name, 0);
5634 if(!sn) { setlocale(LC_NUMERIC, ol); goto memerr; }
5635 ptr -= (uintptr_t)out; len = (unsigned int)((uintptr_t)ptr + (uintptr_t)strlen(sn) + (uintptr_t)48);
5636 for(i = 0; i < a->numframe; i++)
5637 len += a->frame[i].numtransform * 128 + 8;
5638 out = (unsigned char*)M3D_REALLOC(out, len); ptr += (uintptr_t)out;
5639 if(!out) { setlocale(LC_NUMERIC, ol); goto memerr; }
5640 ptr += sprintf(ptr, "Action %d %s\r\n", a->durationmsec, sn);
5641 M3D_FREE(sn); sn = NULL;
5642 for(i = 0; i < a->numframe; i++) {
5643 ptr += sprintf(ptr, "frame %d\r\n", a->frame[i].msec);
5644 for(k = 0; k < a->frame[i].numtransform; k++) {
5645 ptr += sprintf(ptr, "%d %d %d\r\n", a->frame[i].transform[k].boneid,
5646 vrtxidx[a->frame[i].transform[k].pos], vrtxidx[a->frame[i].transform[k].ori]);
5647 }
5648 }
5649 ptr += sprintf(ptr, "\r\n");
5650 }
5651 }
5652 /* inlined assets */
5653 if(model->numinlined && model->inlined) {
5654 for(i = j = 0; i < model->numinlined; i++)
5655 if(model->inlined[i].name)
5656 j += (unsigned int)strlen(model->inlined[i].name) + 6;
5657 if(j > 0) {
5658 ptr -= (uintptr_t)out; len = (unsigned int)((uintptr_t)ptr + (uintptr_t)j + (uintptr_t)16);
5659 out = (unsigned char*)M3D_REALLOC(out, len); ptr += (uintptr_t)out;
5660 if(!out) { setlocale(LC_NUMERIC, ol); goto memerr; }
5661 ptr += sprintf(ptr, "Assets\r\n");
5662 for(i = 0; i < model->numinlined; i++)
5663 if(model->inlined[i].name)
5664 ptr += sprintf(ptr, "%s%s\r\n", model->inlined[i].name, strrchr(model->inlined[i].name, '.') ? "" : ".png");
5665 ptr += sprintf(ptr, "\r\n");
5666 }
5667 }
5668 /* extra info */
5669 if(model->numextra && (flags & M3D_EXP_EXTRA)) {
5670 for(i = 0; i < model->numextra; i++) {
5671 if(model->extra[i]->length < 9) continue;
5672 ptr -= (uintptr_t)out; len = (unsigned int)((uintptr_t)ptr + (uintptr_t)17 + (uintptr_t)(model->extra[i]->length * 3));
5673 out = (unsigned char*)M3D_REALLOC(out, len); ptr += (uintptr_t)out;
5674 if(!out) { setlocale(LC_NUMERIC, ol); goto memerr; }
5675 ptr += sprintf(ptr, "Extra %c%c%c%c\r\n",
5676 model->extra[i]->magic[0] > ' ' ? model->extra[i]->magic[0] : '_',
5677 model->extra[i]->magic[1] > ' ' ? model->extra[i]->magic[1] : '_',
5678 model->extra[i]->magic[2] > ' ' ? model->extra[i]->magic[2] : '_',
5679 model->extra[i]->magic[3] > ' ' ? model->extra[i]->magic[3] : '_');
5680 for(j = 0; j < model->extra[i]->length; j++)
5681 ptr += sprintf(ptr, "%02x ", *((unsigned char *)model->extra + sizeof(m3dchunk_t) + j));
5682 ptr--;
5683 ptr += sprintf(ptr, "\r\n\r\n");
5684 }
5685 }
5686 setlocale(LC_NUMERIC, ol);
5687 len = (unsigned int)((uintptr_t)ptr - (uintptr_t)out);
5688 out = (unsigned char*)M3D_REALLOC(out, len + 1);
5689 if(!out) goto memerr;
5690 out[len] = 0;
5691 } else
5692#endif
5693 {
5694 /* stricly only use LF (newline) in binary */
5695 sd = _m3d_safestr(model->desc, 3);
5696 if(!sd) goto memerr;
5697 /* header */
5698 h = (m3dhdr_t*)M3D_MALLOC(sizeof(m3dhdr_t) + strlen(sn) + strlen(sl) + strlen(sa) + strlen(sd) + 4);
5699 if(!h) goto memerr;
5700 memcpy((uint8_t*)h, "HEAD", 4);
5701 h->length = sizeof(m3dhdr_t);
5702 h->scale = scale;
5703 i = (unsigned int)strlen(sn); memcpy((uint8_t*)h + h->length, sn, i+1); h->length += i+1; M3D_FREE(sn);
5704 i = (unsigned int)strlen(sl); memcpy((uint8_t*)h + h->length, sl, i+1); h->length += i+1; M3D_FREE(sl);
5705 i = (unsigned int)strlen(sa); memcpy((uint8_t*)h + h->length, sa, i+1); h->length += i+1; M3D_FREE(sa);
5706 i = (unsigned int)strlen(sd); memcpy((uint8_t*)h + h->length, sd, i+1); h->length += i+1; M3D_FREE(sd);
5707 sn = sl = sa = sd = NULL;
5708 if(model->inlined)
5709 for(i = 0; i < model->numinlined; i++) {
5710 if(model->inlined[i].name && *model->inlined[i].name && model->inlined[i].length > 0) {
5711 str = _m3d_addstr(str, &numstr, model->inlined[i].name);
5712 if(!str) goto memerr;
5713 }
5714 }
5715 if(str)
5716 for(i = 0; i < numstr; i++) {
5717 h = _m3d_addhdr(h, &str[i]);
5718 if(!h) goto memerr;
5719 }
5720 vc_s = quality == M3D_EXP_INT8? 1 : (quality == M3D_EXP_INT16? 2 : (quality == M3D_EXP_DOUBLE? 8 : 4));
5721 vi_s = maxvrtx < 254 ? 1 : (maxvrtx < 65534 ? 2 : 4);
5722 si_s = h->length - 16 < 254 ? 1 : (h->length - 16 < 65534 ? 2 : 4);
5723 ci_s = !numcmap || !cmap ? 0 : (numcmap < 254 ? 1 : (numcmap < 65534 ? 2 : 4));
5724 ti_s = !maxtmap || !tmap ? 0 : (maxtmap < 254 ? 1 : (maxtmap < 65534 ? 2 : 4));
5725 bi_s = !model->numbone || !model->bone || (flags & M3D_EXP_NOBONE)? 0 : (model->numbone < 254 ? 1 :
5726 (model->numbone < 65534 ? 2 : 4));
5727 nb_s = maxbone < 2 ? 1 : (maxbone == 2 ? 2 : (maxbone <= 4 ? 4 : 8));
5728 sk_s = !bi_s || !maxskin || !skin ? 0 : (maxskin < 254 ? 1 : (maxskin < 65534 ? 2 : 4));
5729 fc_s = maxt < 254 ? 1 : (maxt < 65534 ? 2 : 4);
5730 hi_s = !model->numshape || !model->shape || (flags & M3D_EXP_NOFACE)? 0 : (model->numshape < 254 ? 1 :
5731 (model->numshape < 65534 ? 2 : 4));
5732 fi_s = !model->numface || !model->face || (flags & M3D_EXP_NOFACE)? 0 : (model->numface < 254 ? 1 :
5733 (model->numface < 65534 ? 2 : 4));
5734 vd_s = !model->numvoxel || !model->voxel || (flags & M3D_EXP_NOFACE)? 0 : (minvox >= -128 && maxvox <= 127 ? 1 :
5735 (minvox >= -32768 && maxvox <= 32767 ? 2 : 4));
5736 vp_s = !model->numvoxtype || !model->voxtype || (flags & M3D_EXP_NOFACE)? 0 : (model->numvoxtype < 254 ? 1 :
5737 (model->numvoxtype < 65534 ? 2 : 4));
5738 h->types = (vc_s == 8 ? (3<<0) : (vc_s == 2 ? (1<<0) : (vc_s == 1 ? (0<<0) : (2<<0)))) |
5739 (vi_s == 2 ? (1<<2) : (vi_s == 1 ? (0<<2) : (2<<2))) |
5740 (si_s == 2 ? (1<<4) : (si_s == 1 ? (0<<4) : (2<<4))) |
5741 (ci_s == 2 ? (1<<6) : (ci_s == 1 ? (0<<6) : (ci_s == 4 ? (2<<6) : (3<<6)))) |
5742 (ti_s == 2 ? (1<<8) : (ti_s == 1 ? (0<<8) : (ti_s == 4 ? (2<<8) : (3<<8)))) |
5743 (bi_s == 2 ? (1<<10): (bi_s == 1 ? (0<<10): (bi_s == 4 ? (2<<10) : (3<<10)))) |
5744 (nb_s == 2 ? (1<<12): (nb_s == 1 ? (0<<12): (2<<12))) |
5745 (sk_s == 2 ? (1<<14): (sk_s == 1 ? (0<<14): (sk_s == 4 ? (2<<14) : (3<<14)))) |
5746 (fc_s == 2 ? (1<<16): (fc_s == 1 ? (0<<16): (2<<16))) |
5747 (hi_s == 2 ? (1<<18): (hi_s == 1 ? (0<<18): (hi_s == 4 ? (2<<18) : (3<<18)))) |
5748 (fi_s == 2 ? (1<<20): (fi_s == 1 ? (0<<20): (fi_s == 4 ? (2<<20) : (3<<20)))) |
5749 (vd_s == 2 ? (1<<22): (vd_s == 1 ? (0<<22): (vd_s == 4 ? (2<<22) : (3<<22)))) |
5750 (vp_s == 2 ? (1<<24): (vp_s == 1 ? (0<<24): (vp_s == 4 ? (2<<24) : (3<<24))));
5751 len = h->length;
5752 /* color map */
5753 if(numcmap && cmap && ci_s < 4 && !(flags & M3D_EXP_NOCMAP)) {
5754 chunklen = 8 + numcmap * sizeof(uint32_t);
5755 h = (m3dhdr_t*)M3D_REALLOC(h, len + chunklen);
5756 if(!h) goto memerr;
5757 memcpy((uint8_t*)h + len, "CMAP", 4);
5758 *((uint32_t*)((uint8_t*)h + len + 4)) = chunklen;
5759 memcpy((uint8_t*)h + len + 8, cmap, chunklen - 8);
5760 len += chunklen;
5761 } else numcmap = 0;
5762 /* texture map */
5763 if(numtmap && tmap && !(flags & M3D_EXP_NOTXTCRD) && !(flags & M3D_EXP_NOFACE)) {
5764 chunklen = 8 + maxtmap * vc_s * 2;
5765 h = (m3dhdr_t*)M3D_REALLOC(h, len + chunklen);
5766 if(!h) goto memerr;
5767 memcpy((uint8_t*)h + len, "TMAP", 4);
5768 length = (uint32_t*)((uint8_t*)h + len + 4);
5769 out = (uint8_t*)h + len + 8;
5770 last = M3D_UNDEF;
5771 for(i = 0; i < numtmap; i++) {
5772 if(tmap[i].newidx == last) continue;
5773 last = tmap[i].newidx;
5774 switch(vc_s) {
5775 case 1: *out++ = (uint8_t)(tmap[i].data.u * 255); *out++ = (uint8_t)(tmap[i].data.v * 255); break;
5776 case 2:
5777 *((uint16_t*)out) = (uint16_t)(tmap[i].data.u * 65535); out += 2;
5778 *((uint16_t*)out) = (uint16_t)(tmap[i].data.v * 65535); out += 2;
5779 break;
5780 case 4: *((float*)out) = tmap[i].data.u; out += 4; *((float*)out) = tmap[i].data.v; out += 4; break;
5781 case 8: *((double*)out) = tmap[i].data.u; out += 8; *((double*)out) = tmap[i].data.v; out += 8; break;
5782 }
5783 }
5784 *length = (uint32_t)((uintptr_t)out - (uintptr_t)((uint8_t*)h + len));
5785 out = NULL;
5786 len += *length;
5787 }
5788 /* vertex */
5789 if(numvrtx && vrtx) {
5790 chunklen = 8 + maxvrtx * (ci_s + sk_s + 4 * vc_s);
5791 h = (m3dhdr_t*)M3D_REALLOC(h, len + chunklen);
5792 if(!h) goto memerr;
5793 memcpy((uint8_t*)h + len, "VRTS", 4);
5794 length = (uint32_t*)((uint8_t*)h + len + 4);
5795 out = (uint8_t*)h + len + 8;
5796 last = M3D_UNDEF;
5797 for(i = 0; i < numvrtx; i++) {
5798 if(vrtx[i].newidx == last) continue;
5799 last = vrtx[i].newidx;
5800 switch(vc_s) {
5801 case 1:
5802 *out++ = (int8_t)(vrtx[i].data.x * 127);
5803 *out++ = (int8_t)(vrtx[i].data.y * 127);
5804 *out++ = (int8_t)(vrtx[i].data.z * 127);
5805 *out++ = (int8_t)(vrtx[i].data.w * 127);
5806 break;
5807 case 2:
5808 *((int16_t*)out) = (int16_t)(vrtx[i].data.x * 32767); out += 2;
5809 *((int16_t*)out) = (int16_t)(vrtx[i].data.y * 32767); out += 2;
5810 *((int16_t*)out) = (int16_t)(vrtx[i].data.z * 32767); out += 2;
5811 *((int16_t*)out) = (int16_t)(vrtx[i].data.w * 32767); out += 2;
5812 break;
5813 case 4:
5814 *((float*)out) = vrtx[i].data.x; out += 4;
5815 *((float*)out) = vrtx[i].data.y; out += 4;
5816 *((float*)out) = vrtx[i].data.z; out += 4;
5817 *((float*)out) = vrtx[i].data.w; out += 4;
5818 break;
5819 case 8:
5820 *((double*)out) = vrtx[i].data.x; out += 8;
5821 *((double*)out) = vrtx[i].data.y; out += 8;
5822 *((double*)out) = vrtx[i].data.z; out += 8;
5823 *((double*)out) = vrtx[i].data.w; out += 8;
5824 break;
5825 }
5826 idx = _m3d_cmapidx(cmap, numcmap, vrtx[i].data.color);
5827 switch(ci_s) {
5828 case 1: *out++ = (uint8_t)(idx); break;
5829 case 2: *((uint16_t*)out) = (uint16_t)(idx); out += 2; break;
5830 case 4: *((uint32_t*)out) = vrtx[i].data.color; out += 4; break;
5831 }
5832 out = _m3d_addidx(out, sk_s, vrtx[i].data.skinid);
5833 }
5834 *length = (uint32_t)((uintptr_t)out - (uintptr_t)((uint8_t*)h + len));
5835 out = NULL;
5836 len += *length;
5837 }
5838 /* bones chunk */
5839 if(model->numbone && model->bone && !(flags & M3D_EXP_NOBONE)) {
5840 i = 8 + bi_s + sk_s + model->numbone * (bi_s + si_s + 2*vi_s);
5841 chunklen = i + numskin * nb_s * (bi_s + 1);
5842 h = (m3dhdr_t*)M3D_REALLOC(h, len + chunklen);
5843 if(!h) goto memerr;
5844 memcpy((uint8_t*)h + len, "BONE", 4);
5845 length = (uint32_t*)((uint8_t*)h + len + 4);
5846 out = (uint8_t*)h + len + 8;
5847 out = _m3d_addidx(out, bi_s, model->numbone);
5848 out = _m3d_addidx(out, sk_s, maxskin);
5849 for(i = 0; i < model->numbone; i++) {
5850 out = _m3d_addidx(out, bi_s, model->bone[i].parent);
5851 out = _m3d_addidx(out, si_s, _m3d_stridx(str, numstr, model->bone[i].name));
5852 out = _m3d_addidx(out, vi_s, vrtxidx[model->bone[i].pos]);
5853 out = _m3d_addidx(out, vi_s, vrtxidx[model->bone[i].ori]);
5854 }
5855 if(numskin && skin && sk_s) {
5856 last = M3D_UNDEF;
5857 for(i = 0; i < numskin; i++) {
5858 if(skin[i].newidx == last) continue;
5859 last = skin[i].newidx;
5860 memset(&weights, 0, nb_s);
5861 for(j = k = l = 0, mw = 0.0; j < (uint32_t)nb_s && skin[i].data.boneid[j] != M3D_UNDEF &&
5862 skin[i].data.weight[j] > (M3D_FLOAT)0.0; j++) {
5863 if(mw < skin[i].data.weight[j]) { mw = skin[i].data.weight[j]; k = j; }
5864 weights[j] = (uint8_t)(skin[i].data.weight[j] * 255);
5865 if(!weights[j]) { weights[j]++; l--; }
5866 }
5867 weights[k] += l;
5868 switch(nb_s) {
5869 case 1: weights[0] = 255; break;
5870 case 2: memcpy(out, weights, 2); out += 2; break;
5871 case 4: memcpy(out, weights, 4); out += 4; break;
5872 case 8: memcpy(out, weights, 8); out += 8; break;
5873 }
5874 for(j = 0; j < (uint32_t)nb_s && skin[i].data.boneid[j] != M3D_UNDEF && weights[j]; j++) {
5875 out = _m3d_addidx(out, bi_s, skin[i].data.boneid[j]);
5876 *length += bi_s;
5877 }
5878 }
5879 }
5880 *length = (uint32_t)((uintptr_t)out - (uintptr_t)((uint8_t*)h + len));
5881 out = NULL;
5882 len += *length;
5883 }
5884 /* materials */
5885 if(model->nummaterial && !(flags & M3D_EXP_NOMATERIAL)) {
5886 for(j = 0; j < model->nummaterial; j++) {
5887 if(mtrlidx[j] == M3D_UNDEF || !model->material[j].numprop || !model->material[j].prop) continue;
5888 m = &model->material[j];
5889 chunklen = 12 + si_s + m->numprop * 5;
5890 h = (m3dhdr_t*)M3D_REALLOC(h, len + chunklen);
5891 if(!h) goto memerr;
5892 memcpy((uint8_t*)h + len, "MTRL", 4);
5893 length = (uint32_t*)((uint8_t*)h + len + 4);
5894 out = (uint8_t*)h + len + 8;
5895 out = _m3d_addidx(out, si_s, _m3d_stridx(str, numstr, m->name));
5896 for(i = 0; i < m->numprop; i++) {
5897 if(m->prop[i].type >= 128) {
5898 if(m->prop[i].value.textureid >= model->numtexture ||
5899 !model->texture[m->prop[i].value.textureid].name) continue;
5900 k = m3dpf_map;
5901 } else {
5902 for(k = 256, l = 0; l < sizeof(m3d_propertytypes)/sizeof(m3d_propertytypes[0]); l++)
5903 if(m->prop[i].type == m3d_propertytypes[l].id) { k = m3d_propertytypes[l].format; break; }
5904 }
5905 if(k == 256) continue;
5906 *out++ = m->prop[i].type;
5907 switch(k) {
5908 case m3dpf_color:
5909 if(!(flags & M3D_EXP_NOCMAP)) {
5910 idx = _m3d_cmapidx(cmap, numcmap, m->prop[i].value.color);
5911 switch(ci_s) {
5912 case 1: *out++ = (uint8_t)(idx); break;
5913 case 2: *((uint16_t*)out) = (uint16_t)(idx); out += 2; break;
5914 case 4: *((uint32_t*)out) = (uint32_t)(m->prop[i].value.color); out += 4; break;
5915 }
5916 } else out--;
5917 break;
5918 case m3dpf_uint8: *out++ = m->prop[i].value.num; break;
5919 case m3dpf_uint16: *((uint16_t*)out) = m->prop[i].value.num; out += 2; break;
5920 case m3dpf_uint32: *((uint32_t*)out) = m->prop[i].value.num; out += 4; break;
5921 case m3dpf_float: *((float*)out) = m->prop[i].value.fnum; out += 4; break;
5923 case m3dpf_map:
5924 idx = _m3d_stridx(str, numstr, model->texture[m->prop[i].value.textureid].name);
5925 out = _m3d_addidx(out, si_s, idx);
5926 break;
5927 }
5928 }
5929 *length = (uint32_t)((uintptr_t)out - (uintptr_t)((uint8_t*)h + len));
5930 len += *length;
5931 out = NULL;
5932 }
5933 }
5934 /* procedural face */
5935 if(model->numinlined && model->inlined && !(flags & M3D_EXP_NOFACE)) {
5936 /* all inlined assets which are not textures should be procedural surfaces */
5937 for(j = 0; j < model->numinlined; j++) {
5938 if(!model->inlined[j].name || !model->inlined[j].name[0] || model->inlined[j].length < 4 ||
5939 !model->inlined[j].data || (model->inlined[j].data[1] == 'P' && model->inlined[j].data[2] == 'N' &&
5940 model->inlined[j].data[3] == 'G'))
5941 continue;
5942 for(i = k = 0; i < model->numtexture; i++) {
5943 if(!strcmp(model->inlined[j].name, model->texture[i].name)) { k = 1; break; }
5944 }
5945 if(k) continue;
5946 numproc++;
5947 chunklen = 8 + si_s;
5948 h = (m3dhdr_t*)M3D_REALLOC(h, len + chunklen);
5949 if(!h) goto memerr;
5950 memcpy((uint8_t*)h + len, "PROC", 4);
5951 *((uint32_t*)((uint8_t*)h + len + 4)) = chunklen;
5952 out = (uint8_t*)h + len + 8;
5953 out = _m3d_addidx(out, si_s, _m3d_stridx(str, numstr, model->inlined[j].name));
5954 out = NULL;
5955 len += chunklen;
5956 }
5957 }
5958 /* mesh face */
5959 if(model->numface && face && !(flags & M3D_EXP_NOFACE)) {
5960 chunklen = 8 + si_s + model->numface * (9 * vi_s + 3 * ti_s + si_s + 1);
5961 h = (m3dhdr_t*)M3D_REALLOC(h, len + chunklen);
5962 if(!h) goto memerr;
5963 memcpy((uint8_t*)h + len, "MESH", 4);
5964 length = (uint32_t*)((uint8_t*)h + len + 4);
5965 out = (uint8_t*)h + len + 8;
5966 last = M3D_UNDEF;
5967#ifdef M3D_VERTEXMAX
5968 lastp = M3D_UNDEF;
5969#endif
5970 for(i = 0; i < model->numface; i++) {
5971 if(!(flags & M3D_EXP_NOMATERIAL) && face[i].data.materialid != last) {
5972 last = face[i].data.materialid;
5973 idx = last < model->nummaterial ? _m3d_stridx(str, numstr, model->material[last].name) : 0;
5974 *out++ = 0;
5975 out = _m3d_addidx(out, si_s, idx);
5976 }
5977#ifdef M3D_VERTEXMAX
5978 if(!(flags & M3D_EXP_NOVRTMAX) && face[i].data.paramid != lastp) {
5979 lastp = face[i].data.paramid;
5980 idx = lastp < model->numparam ? _m3d_stridx(str, numstr, model->param[lastp].name) : 0;
5981 *out++ = 0;
5982 out = _m3d_addidx(out, si_s, idx);
5983 }
5984#endif
5985 /* hardcoded triangles. */
5986 k = (3 << 4) |
5987 (((flags & M3D_EXP_NOTXTCRD) || !ti_s || face[i].data.texcoord[0] == M3D_UNDEF ||
5988 face[i].data.texcoord[1] == M3D_UNDEF || face[i].data.texcoord[2] == M3D_UNDEF) ? 0 : 1) |
5989 (((flags & M3D_EXP_NONORMAL) || face[i].data.normal[0] == M3D_UNDEF ||
5990 face[i].data.normal[1] == M3D_UNDEF || face[i].data.normal[2] == M3D_UNDEF) ? 0 : 2)
5991#ifdef M3D_VERTEXMAX
5992 | (((flags & M3D_EXP_NOVRTMAX) || face[i].data.vertmax[0] == M3D_UNDEF ||
5993 face[i].data.vertmax[1] == M3D_UNDEF || face[i].data.vertmax[2] == M3D_UNDEF) ? 0 : 4)
5994#endif
5995 ;
5996 *out++ = k;
5997 for(j = 0; j < 3; j++) {
5998 out = _m3d_addidx(out, vi_s, vrtxidx[face[i].data.vertex[j]]);
5999 if(k & 1)
6000 out = _m3d_addidx(out, ti_s, tmapidx[face[i].data.texcoord[j]]);
6001 if(k & 2)
6002 out = _m3d_addidx(out, vi_s, vrtxidx[face[i].data.normal[j]]);
6003#ifdef M3D_VERTEXMAX
6004 if(k & 4)
6005 out = _m3d_addidx(out, vi_s, vrtxidx[face[i].data.vertmax[j]]);
6006#endif
6007 }
6008 }
6009 *length = (uint32_t)((uintptr_t)out - (uintptr_t)((uint8_t*)h + len));
6010 len += *length;
6011 out = NULL;
6012 }
6013 /* voxel face */
6014 if(model->numvoxtype && model->voxtype && !(flags & M3D_EXP_NOFACE)) {
6015 chunklen = 8 + si_s + model->numvoxtype * (ci_s + si_s + 3 + sk_s);
6016 for(i = 0; i < model->numvoxtype; i++)
6017 chunklen += model->voxtype[i].numitem * (2 + si_s);
6018 h = (m3dhdr_t*)M3D_REALLOC(h, len + chunklen);
6019 if(!h) goto memerr;
6020 memcpy((uint8_t*)h + len, "VOXT", 4);
6021 length = (uint32_t*)((uint8_t*)h + len + 4);
6022 out = (uint8_t*)h + len + 8;
6023 for(i = 0; i < model->numvoxtype; i++) {
6024 if(!(flags & M3D_EXP_NOCMAP)) {
6025 idx = _m3d_cmapidx(cmap, numcmap, model->voxtype[i].color);
6026 switch(ci_s) {
6027 case 1: *out++ = (uint8_t)(idx); break;
6028 case 2: *((uint16_t*)out) = (uint16_t)(idx); out += 2; break;
6029 case 4: *((uint32_t*)out) = (uint32_t)(model->voxtype[i].color); out += 4; break;
6030 }
6031 }
6032 out = _m3d_addidx(out, si_s, _m3d_stridx(str, numstr, model->voxtype[i].name));
6033 *out++ = (model->voxtype[i].rotation & 0xBF) | (((model->voxtype[i].voxshape >> 8) & 1) << 6);
6034 *out++ = model->voxtype[i].voxshape;
6035 *out++ = model->voxtype[i].numitem;
6036 if(!(flags & M3D_EXP_NOBONE) && model->numbone && maxskin)
6037 out = _m3d_addidx(out, sk_s, skinidx[model->voxtype[i].skinid]);
6038 for(j = 0; j < model->voxtype[i].numitem; j++) {
6039 out = _m3d_addidx(out, 2, model->voxtype[i].item[j].count);
6040 out = _m3d_addidx(out, si_s, _m3d_stridx(str, numstr, model->voxtype[i].item[j].name));
6041 }
6042 }
6043 *length = (uint32_t)((uintptr_t)out - (uintptr_t)((uint8_t*)h + len));
6044 len += *length;
6045 out = NULL;
6046 }
6047 if(model->numvoxel && model->voxel && !(flags & M3D_EXP_NOFACE)) {
6048 for(j = 0; j < model->numvoxel; j++) {
6049 chunklen = 8 + si_s + 6 * vd_s + 2 + model->voxel[j].w * model->voxel[j].h * model->voxel[j].d * 3;
6050 h = (m3dhdr_t*)M3D_REALLOC(h, len + chunklen);
6051 if(!h) goto memerr;
6052 memcpy((uint8_t*)h + len, "VOXD", 4);
6053 length = (uint32_t*)((uint8_t*)h + len + 4);
6054 out = (uint8_t*)h + len + 8;
6055 out = _m3d_addidx(out, si_s, _m3d_stridx(str, numstr, model->voxel[j].name));
6056 out = _m3d_addidx(out, vd_s, model->voxel[j].x);
6057 out = _m3d_addidx(out, vd_s, model->voxel[j].y);
6058 out = _m3d_addidx(out, vd_s, model->voxel[j].z);
6059 out = _m3d_addidx(out, vd_s, model->voxel[j].w);
6060 out = _m3d_addidx(out, vd_s, model->voxel[j].h);
6061 out = _m3d_addidx(out, vd_s, model->voxel[j].d);
6062 *out++ = model->voxel[j].uncertain;
6063 *out++ = model->voxel[j].groupid;
6064 /* RLE compress voxel data */
6065 n = model->voxel[j].w * model->voxel[j].h * model->voxel[j].d;
6066 k = o = 0; out[o++] = 0;
6067 for(i = 0; i < n; i++) {
6068 for(l = 1; l < 128 && i + l < n && model->voxel[j].data[i] == model->voxel[j].data[i + l]; l++);
6069 if(l > 1) {
6070 l--;
6071 if(out[k]) { out[k]--; out[o++] = 0x80 | l; }
6072 else out[k] = 0x80 | l;
6073 switch(vp_s) {
6074 case 1: out[o++] = model->voxel[j].data[i]; break;
6075 default: *((uint16_t*)(out + o)) = model->voxel[j].data[i]; o += 2; break;
6076 }
6077 k = o; out[o++] = 0;
6078 i += l;
6079 continue;
6080 }
6081 out[k]++;
6082 switch(vp_s) {
6083 case 1: out[o++] = model->voxel[j].data[i]; break;
6084 default: *((uint16_t*)(out + o)) = model->voxel[j].data[i]; o += 2; break;
6085 }
6086 if(out[k] > 127) { out[k]--; k = o; out[o++] = 0; }
6087 }
6088 if(!(out[k] & 0x80)) { if(out[k]) out[k]--; else o--; }
6089 *length = (uint32_t)((uintptr_t)out + (uintptr_t)o - (uintptr_t)((uint8_t*)h + len));
6090 len += *length;
6091 out = NULL;
6092 }
6093 }
6094 /* mathematical shapes face */
6095 if(model->numshape && model->shape && !(flags & M3D_EXP_NOFACE)) {
6096 for(j = 0; j < model->numshape; j++) {
6097 chunklen = 12 + si_s + model->shape[j].numcmd * (M3D_CMDMAXARG + 1) * 4;
6098 h = (m3dhdr_t*)M3D_REALLOC(h, len + chunklen);
6099 if(!h) goto memerr;
6100 memcpy((uint8_t*)h + len, "SHPE", 4);
6101 length = (uint32_t*)((uint8_t*)h + len + 4);
6102 out = (uint8_t*)h + len + 8;
6103 out = _m3d_addidx(out, si_s, _m3d_stridx(str, numstr, model->shape[j].name));
6104 out = _m3d_addidx(out, bi_s, model->shape[j].group);
6105 for(i = 0; i < model->shape[j].numcmd; i++) {
6106 cmd = &model->shape[j].cmd[i];
6107 if(cmd->type >= (unsigned int)(sizeof(m3d_commandtypes)/sizeof(m3d_commandtypes[0])) || !cmd->arg)
6108 continue;
6109 cd = &m3d_commandtypes[cmd->type];
6110 *out++ = (cmd->type & 0x7F) | (cmd->type > 127 ? 0x80 : 0);
6111 if(cmd->type > 127) *out++ = (cmd->type >> 7) & 0xff;
6112 for(k = n = 0, l = cd->p; k < l; k++) {
6113 switch(cd->a[((k - n) % (cd->p - n)) + n]) {
6114 case m3dcp_mi_t:
6115 out = _m3d_addidx(out, si_s, cmd->arg[k] < model->nummaterial ?
6116 _m3d_stridx(str, numstr, model->material[cmd->arg[k]].name) : 0);
6117 break;
6118 case m3dcp_vc_t:
6119 min_x = *((float*)&cmd->arg[k]);
6120 switch(vc_s) {
6121 case 1: *out++ = (int8_t)(min_x * 127); break;
6122 case 2: *((int16_t*)out) = (int16_t)(min_x * 32767); out += 2; break;
6123 case 4: *((float*)out) = min_x; out += 4; break;
6124 case 8: *((double*)out) = min_x; out += 8; break;
6125 }
6126 break;
6127 case m3dcp_hi_t: out = _m3d_addidx(out, hi_s, cmd->arg[k]); break;
6128 case m3dcp_fi_t: out = _m3d_addidx(out, fi_s, cmd->arg[k]); break;
6129 case m3dcp_ti_t: out = _m3d_addidx(out, ti_s, cmd->arg[k]); break;
6130 case m3dcp_qi_t:
6131 case m3dcp_vi_t: out = _m3d_addidx(out, vi_s, cmd->arg[k]); break;
6132 case m3dcp_i1_t: out = _m3d_addidx(out, 1, cmd->arg[k]); break;
6133 case m3dcp_i2_t: out = _m3d_addidx(out, 2, cmd->arg[k]); break;
6134 case m3dcp_i4_t: out = _m3d_addidx(out, 4, cmd->arg[k]); break;
6135 case m3dcp_va_t: out = _m3d_addidx(out, 4, cmd->arg[k]);
6136 n = k + 1; l += (cmd->arg[k] - 1) * (cd->p - k - 1);
6137 break;
6138 }
6139 }
6140 }
6141 *length = (uint32_t)((uintptr_t)out - (uintptr_t)((uint8_t*)h + len));
6142 len += *length;
6143 out = NULL;
6144 }
6145 }
6146 /* annotation labels */
6147 if(model->numlabel && model->label) {
6148 for(i = 0, length = NULL; i < model->numlabel; i++) {
6149 if(!i || _m3d_strcmp(sl, model->label[i].lang) || _m3d_strcmp(sn, model->label[i].name)) {
6150 sl = model->label[i].lang;
6151 sn = model->label[i].name;
6152 if(length) {
6153 *length = (uint32_t)((uintptr_t)out - (uintptr_t)((uint8_t*)h + len));
6154 len += *length;
6155 }
6156 chunklen = 8 + 2 * si_s + ci_s + model->numlabel * (vi_s + si_s);
6157 h = (m3dhdr_t*)M3D_REALLOC(h, len + chunklen);
6158 if(!h) { sn = NULL; sl = NULL; goto memerr; }
6159 memcpy((uint8_t*)h + len, "LBLS", 4);
6160 length = (uint32_t*)((uint8_t*)h + len + 4);
6161 out = (uint8_t*)h + len + 8;
6162 out = _m3d_addidx(out, si_s, _m3d_stridx(str, numstr, model->label[l].name));
6163 out = _m3d_addidx(out, si_s, _m3d_stridx(str, numstr, model->label[l].lang));
6164 idx = _m3d_cmapidx(cmap, numcmap, model->label[i].color);
6165 switch(ci_s) {
6166 case 1: *out++ = (uint8_t)(idx); break;
6167 case 2: *((uint16_t*)out) = (uint16_t)(idx); out += 2; break;
6168 case 4: *((uint32_t*)out) = model->label[i].color; out += 4; break;
6169 }
6170 }
6171 out = _m3d_addidx(out, vi_s, vrtxidx[model->label[i].vertexid]);
6172 out = _m3d_addidx(out, si_s, _m3d_stridx(str, numstr, model->label[l].text));
6173 }
6174 if(length) {
6175 *length = (uint32_t)((uintptr_t)out - (uintptr_t)((uint8_t*)h + len));
6176 len += *length;
6177 }
6178 out = NULL;
6179 sn = sl = NULL;
6180 }
6181 /* actions */
6182 if(model->numaction && model->action && model->numbone && model->bone && !(flags & M3D_EXP_NOACTION)) {
6183 for(j = 0; j < model->numaction; j++) {
6184 a = &model->action[j];
6185 chunklen = 14 + si_s + a->numframe * (4 + fc_s + maxt * (bi_s + 2 * vi_s));
6186 h = (m3dhdr_t*)M3D_REALLOC(h, len + chunklen);
6187 if(!h) goto memerr;
6188 memcpy((uint8_t*)h + len, "ACTN", 4);
6189 length = (uint32_t*)((uint8_t*)h + len + 4);
6190 out = (uint8_t*)h + len + 8;
6191 out = _m3d_addidx(out, si_s, _m3d_stridx(str, numstr, a->name));
6192 *((uint16_t*)out) = (uint16_t)(a->numframe); out += 2;
6193 *((uint32_t*)out) = (uint32_t)(a->durationmsec); out += 4;
6194 for(i = 0; i < a->numframe; i++) {
6195 *((uint32_t*)out) = (uint32_t)(a->frame[i].msec); out += 4;
6196 out = _m3d_addidx(out, fc_s, a->frame[i].numtransform);
6197 for(k = 0; k < a->frame[i].numtransform; k++) {
6198 out = _m3d_addidx(out, bi_s, a->frame[i].transform[k].boneid);
6199 out = _m3d_addidx(out, vi_s, vrtxidx[a->frame[i].transform[k].pos]);
6200 out = _m3d_addidx(out, vi_s, vrtxidx[a->frame[i].transform[k].ori]);
6201 }
6202 }
6203 *length = (uint32_t)((uintptr_t)out - (uintptr_t)((uint8_t*)h + len));
6204 len += *length;
6205 out = NULL;
6206 }
6207 }
6208 /* inlined assets */
6209 if(model->numinlined && model->inlined && (numproc || (flags & M3D_EXP_INLINE))) {
6210 for(j = 0; j < model->numinlined; j++) {
6211 if(!model->inlined[j].name || !model->inlined[j].name[0] || model->inlined[j].length<4 || !model->inlined[j].data)
6212 continue;
6213 if(!(flags & M3D_EXP_INLINE)) {
6214 if(model->inlined[j].data[1] == 'P' && model->inlined[j].data[2] == 'N' && model->inlined[j].data[3] == 'G')
6215 continue;
6216 for(i = k = 0; i < model->numtexture; i++) {
6217 if(!strcmp(model->inlined[j].name, model->texture[i].name)) { k = 1; break; }
6218 }
6219 if(k) continue;
6220 }
6221 chunklen = 8 + si_s + model->inlined[j].length;
6222 h = (m3dhdr_t*)M3D_REALLOC(h, len + chunklen);
6223 if(!h) goto memerr;
6224 memcpy((uint8_t*)h + len, "ASET", 4);
6225 *((uint32_t*)((uint8_t*)h + len + 4)) = chunklen;
6226 out = (uint8_t*)h + len + 8;
6227 out = _m3d_addidx(out, si_s, _m3d_stridx(str, numstr, model->inlined[j].name));
6228 memcpy(out, model->inlined[j].data, model->inlined[j].length);
6229 out = NULL;
6230 len += chunklen;
6231 }
6232 }
6233 /* extra chunks */
6234 if(model->numextra && model->extra && (flags & M3D_EXP_EXTRA)) {
6235 for(j = 0; j < model->numextra; j++) {
6236 if(!model->extra[j] || model->extra[j]->length < 8)
6237 continue;
6238 chunklen = model->extra[j]->length;
6239 h = (m3dhdr_t*)M3D_REALLOC(h, len + chunklen);
6240 if(!h) goto memerr;
6241 memcpy((uint8_t*)h + len, model->extra[j], chunklen);
6242 len += chunklen;
6243 }
6244 }
6245 /* add end chunk */
6246 h = (m3dhdr_t*)M3D_REALLOC(h, len + 4);
6247 if(!h) goto memerr;
6248 memcpy((uint8_t*)h + len, "OMD3", 4);
6249 len += 4;
6250 /* zlib compress */
6251 if(!(flags & M3D_EXP_NOZLIB)) {
6252 M3D_LOG("Deflating chunks");
6253 z = stbi_zlib_compress((unsigned char *)h, len, (int*)&l, 9);
6254 if(z && l > 0 && l < len) { len = l; M3D_FREE(h); h = (m3dhdr_t*)z; }
6255 }
6256 /* add file header at the begining */
6257 len += 8;
6258 out = (unsigned char*)M3D_MALLOC(len);
6259 if(!out) goto memerr;
6260 memcpy(out, "3DMO", 4);
6261 *((uint32_t*)(out + 4)) = len;
6262 /* preview image chunk, must be the first if exists */
6263 if(model->preview.data && model->preview.length) {
6264 chunklen = 8 + model->preview.length;
6265 out = (unsigned char*)M3D_REALLOC(out, len + chunklen);
6266 if(!out) goto memerr;
6267 memcpy((uint8_t*)out + 8, "PRVW", 4);
6268 *((uint32_t*)((uint8_t*)out + 8 + 4)) = chunklen;
6269 memcpy((uint8_t*)out + 8 + 8, model->preview.data, model->preview.length);
6270 *((uint32_t*)(out + 4)) += chunklen;
6271 } else
6272 chunklen = 0;
6273 memcpy(out + 8 + chunklen, h, len - 8);
6274 }
6275 if(size) *size = out ? len : 0;
6276 if(vrtxidx) M3D_FREE(vrtxidx);
6277 if(mtrlidx) M3D_FREE(mtrlidx);
6278 if(tmapidx) M3D_FREE(tmapidx);
6279 if(skinidx) M3D_FREE(skinidx);
6280 if(norm) M3D_FREE(norm);
6281 if(face) M3D_FREE(face);
6282 if(cmap) M3D_FREE(cmap);
6283 if(tmap) M3D_FREE(tmap);
6284 if(skin) M3D_FREE(skin);
6285 if(str) M3D_FREE(str);
6286 if(vrtx) M3D_FREE(vrtx);
6287 if(opa) free(opa);
6288 if(h) M3D_FREE(h);
6289 return out;
6290}
6291#endif
6293#endif
6295#ifdef __cplusplus
6296}
6297#ifdef M3D_CPPWRAPPER
6298#include <vector>
6299#include <string>
6300#include <memory>
6302/*** C++ wrapper class ***/
6303namespace M3D {
6304#ifdef M3D_IMPLEMENTATION
6306 class Model {
6307 public:
6308 m3d_t *model;
6310 public:
6311 Model() {
6312 this->model = (m3d_t*)malloc(sizeof(m3d_t)); memset(this->model, 0, sizeof(m3d_t));
6313 }
6314 Model(_unused const std::string &data, _unused m3dread_t ReadFileCB,
6315 _unused m3dfree_t FreeCB, _unused M3D::Model mtllib) {
6316#ifndef M3D_NOIMPORTER
6317 this->model = m3d_load((unsigned char *)data.data(), ReadFileCB, FreeCB, mtllib.model);
6318#else
6319 Model();
6320#endif
6321 }
6322 Model(_unused const std::vector<unsigned char> data, _unused m3dread_t ReadFileCB,
6323 _unused m3dfree_t FreeCB, _unused M3D::Model mtllib) {
6324#ifndef M3D_NOIMPORTER
6325 this->model = m3d_load((unsigned char *)&data[0], ReadFileCB, FreeCB, mtllib.model);
6326#else
6327 Model();
6328#endif
6329 }
6330 Model(_unused const unsigned char *data, _unused m3dread_t ReadFileCB,
6331 _unused m3dfree_t FreeCB, _unused M3D::Model mtllib) {
6332#ifndef M3D_NOIMPORTER
6333 this->model = m3d_load((unsigned char*)data, ReadFileCB, FreeCB, mtllib.model);
6334#else
6335 Model();
6336#endif
6337 }
6338 ~Model() { m3d_free(this->model); }
6340 public:
6341 m3d_t *getCStruct() { return this->model; }
6342 std::string getName() { return std::string(this->model->name); }
6343 void setName(std::string name) { this->model->name = (char*)name.c_str(); }
6344 std::string getLicense() { return std::string(this->model->license); }
6345 void setLicense(std::string license) { this->model->license = (char*)license.c_str(); }
6346 std::string getAuthor() { return std::string(this->model->author); }
6347 void setAuthor(std::string author) { this->model->author = (char*)author.c_str(); }
6348 std::string getDescription() { return std::string(this->model->desc); }
6349 void setDescription(std::string desc) { this->model->desc = (char*)desc.c_str(); }
6350 float getScale() { return this->model->scale; }
6351 void setScale(float scale) { this->model->scale = scale; }
6352 std::vector<unsigned char> getPreview() { return this->model->preview.data ?
6353 std::vector<unsigned char>(this->model->preview.data, this->model->preview.data + this->model->preview.length) :
6354 std::vector<unsigned char>(); }
6355 std::vector<uint32_t> getColorMap() { return this->model->cmap ? std::vector<uint32_t>(this->model->cmap,
6356 this->model->cmap + this->model->numcmap) : std::vector<uint32_t>(); }
6357 std::vector<m3dti_t> getTextureMap() { return this->model->tmap ? std::vector<m3dti_t>(this->model->tmap,
6358 this->model->tmap + this->model->numtmap) : std::vector<m3dti_t>(); }
6359 std::vector<m3dtx_t> getTextures() { return this->model->texture ? std::vector<m3dtx_t>(this->model->texture,
6360 this->model->texture + this->model->numtexture) : std::vector<m3dtx_t>(); }
6361 std::string getTextureName(int idx) { return idx >= 0 && (unsigned int)idx < this->model->numtexture ?
6362 std::string(this->model->texture[idx].name) : nullptr; }
6363 std::vector<m3db_t> getBones() { return this->model->bone ? std::vector<m3db_t>(this->model->bone, this->model->bone +
6364 this->model->numbone) : std::vector<m3db_t>(); }
6365 std::string getBoneName(int idx) { return idx >= 0 && (unsigned int)idx < this->model->numbone ?
6366 std::string(this->model->bone[idx].name) : nullptr; }
6367 std::vector<m3dm_t> getMaterials() { return this->model->material ? std::vector<m3dm_t>(this->model->material,
6368 this->model->material + this->model->nummaterial) : std::vector<m3dm_t>(); }
6369 std::string getMaterialName(int idx) { return idx >= 0 && (unsigned int)idx < this->model->nummaterial ?
6370 std::string(this->model->material[idx].name) : nullptr; }
6371 int getMaterialPropertyInt(int idx, int type) {
6372 if (idx < 0 || (unsigned int)idx >= this->model->nummaterial || type < 0 || type >= 127 ||
6373 !this->model->material[idx].prop) return -1;
6374 for (int i = 0; i < this->model->material[idx].numprop; i++) {
6375 if (this->model->material[idx].prop[i].type == type)
6376 return this->model->material[idx].prop[i].value.num;
6377 }
6378 return -1;
6379 }
6380 uint32_t getMaterialPropertyColor(int idx, int type) { return this->getMaterialPropertyInt(idx, type); }
6381 float getMaterialPropertyFloat(int idx, int type) {
6382 if (idx < 0 || (unsigned int)idx >= this->model->nummaterial || type < 0 || type >= 127 ||
6383 !this->model->material[idx].prop) return -1.0f;
6384 for (int i = 0; i < this->model->material[idx].numprop; i++) {
6385 if (this->model->material[idx].prop[i].type == type)
6386 return this->model->material[idx].prop[i].value.fnum;
6387 }
6388 return -1.0f;
6389 }
6390 m3dtx_t* getMaterialPropertyMap(int idx, int type) {
6391 if (idx < 0 || (unsigned int)idx >= this->model->nummaterial || type < 128 || type > 255 ||
6392 !this->model->material[idx].prop) return nullptr;
6393 for (int i = 0; i < this->model->material[idx].numprop; i++) {
6394 if (this->model->material[idx].prop[i].type == type)
6395 return this->model->material[idx].prop[i].value.textureid < this->model->numtexture ?
6396 &this->model->texture[this->model->material[idx].prop[i].value.textureid] : nullptr;
6397 }
6398 return nullptr;
6399 }
6400 std::vector<m3dv_t> getVertices() { return this->model->vertex ? std::vector<m3dv_t>(this->model->vertex,
6401 this->model->vertex + this->model->numvertex) : std::vector<m3dv_t>(); }
6402 std::vector<m3df_t> getFace() { return this->model->face ? std::vector<m3df_t>(this->model->face, this->model->face +
6403 this->model->numface) : std::vector<m3df_t>(); }
6404 std::vector<m3dvt_t> getVoxelTypes() { return this->model->voxtype ? std::vector<m3dvt_t>(this->model->voxtype,
6405 this->model->voxtype + this->model->numvoxtype) : std::vector<m3dvt_t>(); }
6406 std::string getVoxelTypeName(int idx) { return idx >= 0 && (unsigned int)idx < this->model->numvoxtype &&
6407 this->model->voxtype[idx].name && this->model->voxtype[idx].name[0] ?
6408 std::string(this->model->voxtype[idx].name) : nullptr; }
6409 std::vector<m3dvi_t> getVoxelTypeItems(int idx) { return idx >= 0 && (unsigned int)idx < this->model->numvoxtype &&
6410 this->model->voxtype[idx].item ? std::vector<m3dvi_t>(this->model->voxtype[idx].item,
6411 this->model->voxtype[idx].item + this->model->voxtype[idx].numitem) : std::vector<m3dvi_t>(); }
6412 std::vector<m3dvx_t> getVoxelBlocks() { return this->model->voxel ? std::vector<m3dvx_t>(this->model->voxel,
6413 this->model->voxel + this->model->numvoxel) : std::vector<m3dvx_t>(); }
6414 std::string getVoxelBlockName(int idx) { return idx >= 0 && (unsigned int)idx < this->model->numvoxel &&
6415 this->model->voxel[idx].name && this->model->voxel[idx].name[0] ?
6416 std::string(this->model->voxel[idx].name) : nullptr; }
6417 std::vector<M3D_VOXEL> getVoxelBlockData(int idx) { return idx >= 0 && (unsigned int)idx < this->model->numvoxel &&
6418 this->model->voxel[idx].data ? std::vector<M3D_VOXEL>(this->model->voxel[idx].data,
6419 this->model->voxel[idx].data + this->model->voxel[idx].w*this->model->voxel[idx].h*this->model->voxel[idx].d) :
6420 std::vector<M3D_VOXEL>(); }
6421 std::vector<m3dh_t> getShape() { return this->model->shape ? std::vector<m3dh_t>(this->model->shape,
6422 this->model->shape + this->model->numshape) : std::vector<m3dh_t>(); }
6423 std::string getShapeName(int idx) { return idx >= 0 && (unsigned int)idx < this->model->numshape &&
6424 this->model->shape[idx].name && this->model->shape[idx].name[0] ?
6425 std::string(this->model->shape[idx].name) : nullptr; }
6426 unsigned int getShapeGroup(int idx) { return idx >= 0 && (unsigned int)idx < this->model->numshape ?
6427 this->model->shape[idx].group : 0xFFFFFFFF; }
6428 std::vector<m3dc_t> getShapeCommands(int idx) { return idx >= 0 && (unsigned int)idx < this->model->numshape &&
6429 this->model->shape[idx].cmd ? std::vector<m3dc_t>(this->model->shape[idx].cmd, this->model->shape[idx].cmd +
6430 this->model->shape[idx].numcmd) : std::vector<m3dc_t>(); }
6431 std::vector<m3dl_t> getAnnotationLabels() { return this->model->label ? std::vector<m3dl_t>(this->model->label,
6432 this->model->label + this->model->numlabel) : std::vector<m3dl_t>(); }
6433 std::vector<m3ds_t> getSkin() { return this->model->skin ? std::vector<m3ds_t>(this->model->skin, this->model->skin +
6434 this->model->numskin) : std::vector<m3ds_t>(); }
6435 std::vector<m3da_t> getActions() { return this->model->action ? std::vector<m3da_t>(this->model->action,
6436 this->model->action + this->model->numaction) : std::vector<m3da_t>(); }
6437 std::string getActionName(int aidx) { return aidx >= 0 && (unsigned int)aidx < this->model->numaction ?
6438 std::string(this->model->action[aidx].name) : nullptr; }
6439 unsigned int getActionDuration(int aidx) { return aidx >= 0 && (unsigned int)aidx < this->model->numaction ?
6440 this->model->action[aidx].durationmsec : 0; }
6441 std::vector<m3dfr_t> getActionFrames(int aidx) { return aidx >= 0 && (unsigned int)aidx < this->model->numaction ?
6442 std::vector<m3dfr_t>(this->model->action[aidx].frame, this->model->action[aidx].frame +
6443 this->model->action[aidx].numframe) : std::vector<m3dfr_t>(); }
6444 unsigned int getActionFrameTimestamp(int aidx, int fidx) { return aidx >= 0 && (unsigned int)aidx < this->model->numaction?
6445 (fidx >= 0 && (unsigned int)fidx < this->model->action[aidx].numframe ?
6446 this->model->action[aidx].frame[fidx].msec : 0) : 0; }
6447 std::vector<m3dtr_t> getActionFrameTransforms(int aidx, int fidx) {
6448 return aidx >= 0 && (unsigned int)aidx < this->model->numaction ? (
6449 fidx >= 0 && (unsigned int)fidx < this->model->action[aidx].numframe ?
6450 std::vector<m3dtr_t>(this->model->action[aidx].frame[fidx].transform,
6451 this->model->action[aidx].frame[fidx].transform + this->model->action[aidx].frame[fidx].numtransform) :
6452 std::vector<m3dtr_t>()) : std::vector<m3dtr_t>(); }
6453 std::vector<m3dtr_t> getActionFrame(int aidx, int fidx, std::vector<m3dtr_t> skeleton) {
6454 m3dtr_t *pose = m3d_frame(this->model, (unsigned int)aidx, (unsigned int)fidx,
6455 skeleton.size() ? &skeleton[0] : nullptr);
6456 return std::vector<m3dtr_t>(pose, pose + this->model->numbone); }
6457 std::vector<m3db_t> getActionPose(int aidx, unsigned int msec) {
6458 m3db_t *pose = m3d_pose(this->model, (unsigned int)aidx, (unsigned int)msec);
6459 return std::vector<m3db_t>(pose, pose + this->model->numbone); }
6460 std::vector<m3di_t> getInlinedAssets() { return this->model->inlined ? std::vector<m3di_t>(this->model->inlined,
6461 this->model->inlined + this->model->numinlined) : std::vector<m3di_t>(); }
6462 std::vector<std::unique_ptr<m3dchunk_t>> getExtras() { return this->model->extra ?
6463 std::vector<std::unique_ptr<m3dchunk_t>>(this->model->extra,
6464 this->model->extra + this->model->numextra) : std::vector<std::unique_ptr<m3dchunk_t>>(); }
6465 std::vector<unsigned char> Save(_unused int quality, _unused int flags) {
6466#ifdef M3D_EXPORTER
6467 unsigned int size;
6468 unsigned char *ptr = m3d_save(this->model, quality, flags, &size);
6469 return ptr && size ? std::vector<unsigned char>(ptr, ptr + size) : std::vector<unsigned char>();
6470#else
6471 return std::vector<unsigned char>();
6472#endif
6473 }
6474 };
6476#else
6477 class Model {
6478 private:
6479 m3d_t *model;
6481 public:
6482 Model(const std::string &data, m3dread_t ReadFileCB, m3dfree_t FreeCB);
6483 Model(const std::vector<unsigned char> data, m3dread_t ReadFileCB, m3dfree_t FreeCB);
6484 Model(const unsigned char *data, m3dread_t ReadFileCB, m3dfree_t FreeCB);
6485 Model();
6486 ~Model();
6488 public:
6489 m3d_t *getCStruct();
6490 std::string getName();
6491 void setName(std::string name);
6492 std::string getLicense();
6493 void setLicense(std::string license);
6494 std::string getAuthor();
6495 void setAuthor(std::string author);
6496 std::string getDescription();
6497 void setDescription(std::string desc);
6498 float getScale();
6499 void setScale(float scale);
6500 std::vector<unsigned char> getPreview();
6501 std::vector<uint32_t> getColorMap();
6502 std::vector<m3dti_t> getTextureMap();
6503 std::vector<m3dtx_t> getTextures();
6504 std::string getTextureName(int idx);
6505 std::vector<m3db_t> getBones();
6506 std::string getBoneName(int idx);
6507 std::vector<m3dm_t> getMaterials();
6508 std::string getMaterialName(int idx);
6509 int getMaterialPropertyInt(int idx, int type);
6510 uint32_t getMaterialPropertyColor(int idx, int type);
6511 float getMaterialPropertyFloat(int idx, int type);
6512 m3dtx_t* getMaterialPropertyMap(int idx, int type);
6513 std::vector<m3dv_t> getVertices();
6514 std::vector<m3df_t> getFace();
6515 std::vector<m3dvt_t> getVoxelTypes();
6516 std::string getVoxelTypeName(int idx);
6517 std::vector<m3dvi_t> getVoxelTypeItems(int idx);
6518 std::vector<m3dvx_t> getVoxelBlocks();
6519 std::string getVoxelBlockName(int idx);
6520 std::vector<M3D_VOXEL> getVoxelBlockData(int idx);
6521 std::vector<m3dh_t> getShape();
6522 std::string getShapeName(int idx);
6523 unsigned int getShapeGroup(int idx);
6524 std::vector<m3dc_t> getShapeCommands(int idx);
6525 std::vector<m3dl_t> getAnnotationLabels();
6526 std::vector<m3ds_t> getSkin();
6527 std::vector<m3da_t> getActions();
6528 std::string getActionName(int aidx);
6529 unsigned int getActionDuration(int aidx);
6530 std::vector<m3dfr_t> getActionFrames(int aidx);
6531 unsigned int getActionFrameTimestamp(int aidx, int fidx);
6532 std::vector<m3dtr_t> getActionFrameTransforms(int aidx, int fidx);
6533 std::vector<m3dtr_t> getActionFrame(int aidx, int fidx, std::vector<m3dtr_t> skeleton);
6534 std::vector<m3db_t> getActionPose(int aidx, unsigned int msec);
6535 std::vector<m3di_t> getInlinedAssets();
6536 std::vector<std::unique_ptr<m3dchunk_t>> getExtras();
6537 std::vector<unsigned char> Save(int quality, int flags);
6538 };
6540#endif /* impl */
6541}
6542#endif
6544#endif /* __cplusplus */
6546#endif
index : raylib-jai
Bindings from https://solarium.technology