debug function DM_debug_info / DM_debug_print, with access from python
[blender.git] / source / blender / blenkernel / intern / DerivedMesh.c
1 /*
2  * ***** BEGIN GPL LICENSE BLOCK *****
3  *
4  * This program is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU General Public License
6  * as published by the Free Software Foundation; either version 2
7  * of the License, or (at your option) any later version.
8  *
9  * This program is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12  * GNU General Public License for more details.
13  *
14  * You should have received a copy of the GNU General Public License
15  * along with this program; if not, write to the Free Software Foundation,
16  * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
17  *
18  * The Original Code is Copyright (C) 2005 Blender Foundation.
19  * All rights reserved.
20  *
21  * The Original Code is: all of this file.
22  *
23  * Contributor(s): none yet.
24  *
25  * ***** END GPL LICENSE BLOCK *****
26  */
27
28 /** \file blender/blenkernel/intern/DerivedMesh.c
29  *  \ingroup bke
30  */
31
32
33 #include <string.h>
34
35
36 #include "MEM_guardedalloc.h"
37
38 #include "DNA_cloth_types.h"
39 #include "DNA_key_types.h"
40 #include "DNA_meshdata_types.h"
41 #include "DNA_armature_types.h"
42 #include "DNA_object_types.h"
43 #include "DNA_scene_types.h" // N_T
44
45 #include "BLI_blenlib.h"
46 #include "BLI_editVert.h"
47 #include "BLI_math.h"
48 #include "BLI_memarena.h"
49 #include "BLI_pbvh.h"
50 #include "BLI_utildefines.h"
51 #include "BLI_linklist.h"
52
53 #include "BKE_cdderivedmesh.h"
54 #include "BKE_displist.h"
55 #include "BKE_key.h"
56 #include "BKE_modifier.h"
57 #include "BKE_mesh.h"
58 #include "BKE_object.h"
59 #include "BKE_paint.h"
60 #include "BKE_texture.h"
61 #include "BKE_multires.h"
62 #include "BKE_armature.h"
63 #include "BKE_deform.h"
64
65 #ifdef WITH_GAMEENGINE
66 #include "BKE_navmesh_conversion.h"
67 static DerivedMesh *navmesh_dm_createNavMeshForVisualization(DerivedMesh *dm);
68 #endif
69
70 #include "BLO_sys_types.h" // for intptr_t support
71
72 #include "GL/glew.h"
73
74 #include "GPU_buffers.h"
75 #include "GPU_draw.h"
76 #include "GPU_extensions.h"
77 #include "GPU_material.h"
78
79 extern GLubyte stipple_quarttone[128]; /* glutil.c, bad level data */
80
81 ///////////////////////////////////
82 ///////////////////////////////////
83
84 static MVert *dm_getVertArray(DerivedMesh *dm)
85 {
86         MVert *mvert = CustomData_get_layer(&dm->vertData, CD_MVERT);
87
88         if (!mvert) {
89                 mvert = CustomData_add_layer(&dm->vertData, CD_MVERT, CD_CALLOC, NULL,
90                         dm->getNumVerts(dm));
91                 CustomData_set_layer_flag(&dm->vertData, CD_MVERT, CD_FLAG_TEMPORARY);
92                 dm->copyVertArray(dm, mvert);
93         }
94
95         return mvert;
96 }
97
98 static MEdge *dm_getEdgeArray(DerivedMesh *dm)
99 {
100         MEdge *medge = CustomData_get_layer(&dm->edgeData, CD_MEDGE);
101
102         if (!medge) {
103                 medge = CustomData_add_layer(&dm->edgeData, CD_MEDGE, CD_CALLOC, NULL,
104                         dm->getNumEdges(dm));
105                 CustomData_set_layer_flag(&dm->edgeData, CD_MEDGE, CD_FLAG_TEMPORARY);
106                 dm->copyEdgeArray(dm, medge);
107         }
108
109         return medge;
110 }
111
112 static MFace *dm_getFaceArray(DerivedMesh *dm)
113 {
114         MFace *mface = CustomData_get_layer(&dm->faceData, CD_MFACE);
115
116         if (!mface) {
117                 mface = CustomData_add_layer(&dm->faceData, CD_MFACE, CD_CALLOC, NULL,
118                         dm->getNumFaces(dm));
119                 CustomData_set_layer_flag(&dm->faceData, CD_MFACE, CD_FLAG_TEMPORARY);
120                 dm->copyFaceArray(dm, mface);
121         }
122
123         return mface;
124 }
125
126 static MVert *dm_dupVertArray(DerivedMesh *dm)
127 {
128         MVert *tmp = MEM_callocN(sizeof(*tmp) * dm->getNumVerts(dm),
129                                                          "dm_dupVertArray tmp");
130
131         if(tmp) dm->copyVertArray(dm, tmp);
132
133         return tmp;
134 }
135
136 static MEdge *dm_dupEdgeArray(DerivedMesh *dm)
137 {
138         MEdge *tmp = MEM_callocN(sizeof(*tmp) * dm->getNumEdges(dm),
139                                                          "dm_dupEdgeArray tmp");
140
141         if(tmp) dm->copyEdgeArray(dm, tmp);
142
143         return tmp;
144 }
145
146 static MFace *dm_dupFaceArray(DerivedMesh *dm)
147 {
148         MFace *tmp = MEM_callocN(sizeof(*tmp) * dm->getNumFaces(dm),
149                                                          "dm_dupFaceArray tmp");
150
151         if(tmp) dm->copyFaceArray(dm, tmp);
152
153         return tmp;
154 }
155
156 void DM_init_funcs(DerivedMesh *dm)
157 {
158         /* default function implementations */
159         dm->getVertArray = dm_getVertArray;
160         dm->getEdgeArray = dm_getEdgeArray;
161         dm->getFaceArray = dm_getFaceArray;
162         dm->dupVertArray = dm_dupVertArray;
163         dm->dupEdgeArray = dm_dupEdgeArray;
164         dm->dupFaceArray = dm_dupFaceArray;
165
166         dm->getVertData = DM_get_vert_data;
167         dm->getEdgeData = DM_get_edge_data;
168         dm->getFaceData = DM_get_face_data;
169         dm->getVertDataArray = DM_get_vert_data_layer;
170         dm->getEdgeDataArray = DM_get_edge_data_layer;
171         dm->getFaceDataArray = DM_get_face_data_layer;
172
173         bvhcache_init(&dm->bvhCache);
174 }
175
176 void DM_init(DerivedMesh *dm, DerivedMeshType type,
177                          int numVerts, int numEdges, int numFaces)
178 {
179         dm->type = type;
180         dm->numVertData = numVerts;
181         dm->numEdgeData = numEdges;
182         dm->numFaceData = numFaces;
183
184         DM_init_funcs(dm);
185         
186         dm->needsFree = 1;
187         dm->auto_bump_scale = -1.0f;
188 }
189
190 void DM_from_template(DerivedMesh *dm, DerivedMesh *source, DerivedMeshType type,
191                                           int numVerts, int numEdges, int numFaces)
192 {
193         CustomData_copy(&source->vertData, &dm->vertData, CD_MASK_DERIVEDMESH,
194                                         CD_CALLOC, numVerts);
195         CustomData_copy(&source->edgeData, &dm->edgeData, CD_MASK_DERIVEDMESH,
196                                         CD_CALLOC, numEdges);
197         CustomData_copy(&source->faceData, &dm->faceData, CD_MASK_DERIVEDMESH,
198                                         CD_CALLOC, numFaces);
199
200         dm->type = type;
201         dm->numVertData = numVerts;
202         dm->numEdgeData = numEdges;
203         dm->numFaceData = numFaces;
204
205         DM_init_funcs(dm);
206
207         dm->needsFree = 1;
208 }
209
210 int DM_release(DerivedMesh *dm)
211 {
212         if (dm->needsFree) {
213                 bvhcache_free(&dm->bvhCache);
214                 GPU_drawobject_free( dm );
215                 CustomData_free(&dm->vertData, dm->numVertData);
216                 CustomData_free(&dm->edgeData, dm->numEdgeData);
217                 CustomData_free(&dm->faceData, dm->numFaceData);
218
219                 return 1;
220         }
221         else {
222                 CustomData_free_temporary(&dm->vertData, dm->numVertData);
223                 CustomData_free_temporary(&dm->edgeData, dm->numEdgeData);
224                 CustomData_free_temporary(&dm->faceData, dm->numFaceData);
225
226                 return 0;
227         }
228 }
229
230 void DM_to_mesh(DerivedMesh *dm, Mesh *me)
231 {
232         /* dm might depend on me, so we need to do everything with a local copy */
233         Mesh tmp = *me;
234         int totvert, totedge, totface;
235
236         memset(&tmp.vdata, 0, sizeof(tmp.vdata));
237         memset(&tmp.edata, 0, sizeof(tmp.edata));
238         memset(&tmp.fdata, 0, sizeof(tmp.fdata));
239
240         totvert = tmp.totvert = dm->getNumVerts(dm);
241         totedge = tmp.totedge = dm->getNumEdges(dm);
242         totface = tmp.totface = dm->getNumFaces(dm);
243
244         CustomData_copy(&dm->vertData, &tmp.vdata, CD_MASK_MESH, CD_DUPLICATE, totvert);
245         CustomData_copy(&dm->edgeData, &tmp.edata, CD_MASK_MESH, CD_DUPLICATE, totedge);
246         CustomData_copy(&dm->faceData, &tmp.fdata, CD_MASK_MESH, CD_DUPLICATE, totface);
247
248         /* not all DerivedMeshes store their verts/edges/faces in CustomData, so
249            we set them here in case they are missing */
250         if(!CustomData_has_layer(&tmp.vdata, CD_MVERT))
251                 CustomData_add_layer(&tmp.vdata, CD_MVERT, CD_ASSIGN, dm->dupVertArray(dm), totvert);
252         if(!CustomData_has_layer(&tmp.edata, CD_MEDGE))
253                 CustomData_add_layer(&tmp.edata, CD_MEDGE, CD_ASSIGN, dm->dupEdgeArray(dm), totedge);
254         if(!CustomData_has_layer(&tmp.fdata, CD_MFACE))
255                 CustomData_add_layer(&tmp.fdata, CD_MFACE, CD_ASSIGN, dm->dupFaceArray(dm), totface);
256
257         /* object had got displacement layer, should copy this layer to save sculpted data */
258         /* NOTE: maybe some other layers should be copied? nazgul */
259         if(CustomData_has_layer(&me->fdata, CD_MDISPS)) {
260                 if (totface == me->totface) {
261                         MDisps *mdisps = CustomData_get_layer(&me->fdata, CD_MDISPS);
262                         CustomData_add_layer(&tmp.fdata, CD_MDISPS, CD_DUPLICATE, mdisps, totface);
263                 }
264         }
265
266         mesh_update_customdata_pointers(&tmp);
267
268         CustomData_free(&me->vdata, me->totvert);
269         CustomData_free(&me->edata, me->totedge);
270         CustomData_free(&me->fdata, me->totface);
271
272         /* if the number of verts has changed, remove invalid data */
273         if(tmp.totvert != me->totvert) {
274                 if(tmp.key) tmp.key->id.us--;
275                 tmp.key = NULL;
276         }
277
278         *me = tmp;
279 }
280
281 void DM_to_meshkey(DerivedMesh *dm, Mesh *me, KeyBlock *kb)
282 {
283         int a, totvert = dm->getNumVerts(dm);
284         float *fp;
285         MVert *mvert;
286         
287         if(totvert==0 || me->totvert==0 || me->totvert!=totvert) return;
288         
289         if(kb->data) MEM_freeN(kb->data);
290         kb->data= MEM_callocN(me->key->elemsize*me->totvert, "kb->data");
291         kb->totelem= totvert;
292         
293         fp= kb->data;
294         mvert=dm->getVertDataArray(dm, CD_MVERT);
295         
296         for(a=0; a<kb->totelem; a++, fp+=3, mvert++) {
297                 copy_v3_v3(fp, mvert->co);
298         }
299 }
300
301 void DM_set_only_copy(DerivedMesh *dm, CustomDataMask mask)
302 {
303         CustomData_set_only_copy(&dm->vertData, mask);
304         CustomData_set_only_copy(&dm->edgeData, mask);
305         CustomData_set_only_copy(&dm->faceData, mask);
306 }
307
308 void DM_add_vert_layer(DerivedMesh *dm, int type, int alloctype, void *layer)
309 {
310         CustomData_add_layer(&dm->vertData, type, alloctype, layer, dm->numVertData);
311 }
312
313 void DM_add_edge_layer(DerivedMesh *dm, int type, int alloctype, void *layer)
314 {
315         CustomData_add_layer(&dm->edgeData, type, alloctype, layer, dm->numEdgeData);
316 }
317
318 void DM_add_face_layer(DerivedMesh *dm, int type, int alloctype, void *layer)
319 {
320         CustomData_add_layer(&dm->faceData, type, alloctype, layer, dm->numFaceData);
321 }
322
323 void *DM_get_vert_data(DerivedMesh *dm, int index, int type)
324 {
325         return CustomData_get(&dm->vertData, index, type);
326 }
327
328 void *DM_get_edge_data(DerivedMesh *dm, int index, int type)
329 {
330         return CustomData_get(&dm->edgeData, index, type);
331 }
332
333 void *DM_get_face_data(DerivedMesh *dm, int index, int type)
334 {
335         return CustomData_get(&dm->faceData, index, type);
336 }
337
338 void *DM_get_vert_data_layer(DerivedMesh *dm, int type)
339 {
340         if(type == CD_MVERT)
341                 return dm->getVertArray(dm);
342
343         return CustomData_get_layer(&dm->vertData, type);
344 }
345
346 void *DM_get_edge_data_layer(DerivedMesh *dm, int type)
347 {
348         if(type == CD_MEDGE)
349                 return dm->getEdgeArray(dm);
350
351         return CustomData_get_layer(&dm->edgeData, type);
352 }
353
354 void *DM_get_face_data_layer(DerivedMesh *dm, int type)
355 {
356         if(type == CD_MFACE)
357                 return dm->getFaceArray(dm);
358
359         return CustomData_get_layer(&dm->faceData, type);
360 }
361
362 void DM_set_vert_data(DerivedMesh *dm, int index, int type, void *data)
363 {
364         CustomData_set(&dm->vertData, index, type, data);
365 }
366
367 void DM_set_edge_data(DerivedMesh *dm, int index, int type, void *data)
368 {
369         CustomData_set(&dm->edgeData, index, type, data);
370 }
371
372 void DM_set_face_data(DerivedMesh *dm, int index, int type, void *data)
373 {
374         CustomData_set(&dm->faceData, index, type, data);
375 }
376
377 void DM_copy_vert_data(DerivedMesh *source, DerivedMesh *dest,
378                                            int source_index, int dest_index, int count)
379 {
380         CustomData_copy_data(&source->vertData, &dest->vertData,
381                                                  source_index, dest_index, count);
382 }
383
384 void DM_copy_edge_data(DerivedMesh *source, DerivedMesh *dest,
385                                            int source_index, int dest_index, int count)
386 {
387         CustomData_copy_data(&source->edgeData, &dest->edgeData,
388                                                  source_index, dest_index, count);
389 }
390
391 void DM_copy_face_data(DerivedMesh *source, DerivedMesh *dest,
392                                            int source_index, int dest_index, int count)
393 {
394         CustomData_copy_data(&source->faceData, &dest->faceData,
395                                                  source_index, dest_index, count);
396 }
397
398 void DM_free_vert_data(struct DerivedMesh *dm, int index, int count)
399 {
400         CustomData_free_elem(&dm->vertData, index, count);
401 }
402
403 void DM_free_edge_data(struct DerivedMesh *dm, int index, int count)
404 {
405         CustomData_free_elem(&dm->edgeData, index, count);
406 }
407
408 void DM_free_face_data(struct DerivedMesh *dm, int index, int count)
409 {
410         CustomData_free_elem(&dm->faceData, index, count);
411 }
412
413 void DM_interp_vert_data(DerivedMesh *source, DerivedMesh *dest,
414                                                  int *src_indices, float *weights,
415                                                  int count, int dest_index)
416 {
417         CustomData_interp(&source->vertData, &dest->vertData, src_indices,
418                                           weights, NULL, count, dest_index);
419 }
420
421 void DM_interp_edge_data(DerivedMesh *source, DerivedMesh *dest,
422                                                  int *src_indices,
423                                                  float *weights, EdgeVertWeight *vert_weights,
424                                                  int count, int dest_index)
425 {
426         CustomData_interp(&source->edgeData, &dest->edgeData, src_indices,
427                                           weights, (float*)vert_weights, count, dest_index);
428 }
429
430 void DM_interp_face_data(DerivedMesh *source, DerivedMesh *dest,
431                                                  int *src_indices,
432                                                  float *weights, FaceVertWeight *vert_weights,
433                                                  int count, int dest_index)
434 {
435         CustomData_interp(&source->faceData, &dest->faceData, src_indices,
436                                           weights, (float*)vert_weights, count, dest_index);
437 }
438
439 void DM_swap_face_data(DerivedMesh *dm, int index, const int *corner_indices)
440 {
441         CustomData_swap(&dm->faceData, index, corner_indices);
442 }
443
444 ///
445
446 DerivedMesh *mesh_create_derived(Mesh *me, Object *ob, float (*vertCos)[3])
447 {
448         DerivedMesh *dm = CDDM_from_mesh(me, ob);
449         
450         if(!dm)
451                 return NULL;
452         
453         if (vertCos)
454                 CDDM_apply_vert_coords(dm, vertCos);
455
456         CDDM_calc_normals(dm);
457
458         return dm;
459 }
460
461 DerivedMesh *mesh_create_derived_for_modifier(Scene *scene, Object *ob, ModifierData *md)
462 {
463         Mesh *me = ob->data;
464         ModifierTypeInfo *mti = modifierType_getInfo(md->type);
465         DerivedMesh *dm;
466
467         md->scene= scene;
468         
469         if (!(md->mode&eModifierMode_Realtime)) return NULL;
470         if (mti->isDisabled && mti->isDisabled(md, 0)) return NULL;
471
472         if (mti->type==eModifierTypeType_OnlyDeform) {
473                 int numVerts;
474                 float (*deformedVerts)[3] = mesh_getVertexCos(me, &numVerts);
475
476                 mti->deformVerts(md, ob, NULL, deformedVerts, numVerts, 0, 0);
477                 dm = mesh_create_derived(me, ob, deformedVerts);
478
479                 MEM_freeN(deformedVerts);
480         } else {
481                 DerivedMesh *tdm = mesh_create_derived(me, ob, NULL);
482                 dm = mti->applyModifier(md, ob, tdm, 0, 0);
483
484                 if(tdm != dm) tdm->release(tdm);
485         }
486
487         return dm;
488 }
489
490 static float *get_editmesh_orco_verts(EditMesh *em)
491 {
492         EditVert *eve;
493         float *orco;
494         int a, totvert;
495
496         /* these may not really be the orco's, but it's only for preview.
497          * could be solver better once, but isn't simple */
498
499         totvert= 0;
500         for(eve=em->verts.first; eve; eve=eve->next)
501                 totvert++;
502         
503         orco = MEM_mallocN(sizeof(float)*3*totvert, "EditMesh Orco");
504
505         for(a=0, eve=em->verts.first; eve; eve=eve->next, a+=3) {
506                 copy_v3_v3(orco+a, eve->co);
507         }
508         
509         return orco;
510 }
511
512 /* orco custom data layer */
513
514 static void *get_orco_coords_dm(Object *ob, EditMesh *em, int layer, int *free)
515 {
516         *free= 0;
517
518         if(layer == CD_ORCO) {
519                 /* get original coordinates */
520                 *free= 1;
521
522                 if(em)
523                         return (float(*)[3])get_editmesh_orco_verts(em);
524                 else
525                         return (float(*)[3])get_mesh_orco_verts(ob);
526         }
527         else if(layer == CD_CLOTH_ORCO) {
528                 /* apply shape key for cloth, this should really be solved
529                    by a more flexible customdata system, but not simple */
530                 if(!em) {
531                         ClothModifierData *clmd = (ClothModifierData *)modifiers_findByType(ob, eModifierType_Cloth);
532                         KeyBlock *kb= key_get_keyblock(ob_get_key(ob), clmd->sim_parms->shapekey_rest);
533
534                         if(kb->data)
535                                 return kb->data;
536                 }
537
538                 return NULL;
539         }
540
541         return NULL;
542 }
543
544 static DerivedMesh *create_orco_dm(Object *ob, Mesh *me, EditMesh *em, int layer)
545 {
546         DerivedMesh *dm;
547         float (*orco)[3];
548         int free;
549
550         if(em) dm= CDDM_from_editmesh(em, me);
551         else dm= CDDM_from_mesh(me, ob);
552
553         orco= get_orco_coords_dm(ob, em, layer, &free);
554
555         if(orco) {
556                 CDDM_apply_vert_coords(dm, orco);
557                 if(free) MEM_freeN(orco);
558         }
559
560         CDDM_calc_normals(dm);
561
562         return dm;
563 }
564
565 static void add_orco_dm(Object *ob, EditMesh *em, DerivedMesh *dm, DerivedMesh *orcodm, int layer)
566 {
567         float (*orco)[3], (*layerorco)[3];
568         int totvert, free;
569
570         totvert= dm->getNumVerts(dm);
571
572         if(orcodm) {
573                 orco= MEM_callocN(sizeof(float)*3*totvert, "dm orco");
574                 free= 1;
575
576                 if(orcodm->getNumVerts(orcodm) == totvert)
577                         orcodm->getVertCos(orcodm, orco);
578                 else
579                         dm->getVertCos(dm, orco);
580         }
581         else
582                 orco= get_orco_coords_dm(ob, em, layer, &free);
583
584         if(orco) {
585                 if(layer == CD_ORCO)
586                         transform_mesh_orco_verts(ob->data, orco, totvert, 0);
587
588                 if(!(layerorco = DM_get_vert_data_layer(dm, layer))) {
589                         DM_add_vert_layer(dm, layer, CD_CALLOC, NULL);
590                         layerorco = DM_get_vert_data_layer(dm, layer);
591                 }
592
593                 memcpy(layerorco, orco, sizeof(float)*3*totvert);
594                 if(free) MEM_freeN(orco);
595         }
596 }
597
598 /* weight paint colors */
599
600 /* Something of a hack, at the moment deal with weightpaint
601  * by tucking into colors during modifier eval, only in
602  * wpaint mode. Works ok but need to make sure recalc
603  * happens on enter/exit wpaint.
604  */
605
606 void weight_to_rgb(float r_rgb[3], const float weight)
607 {
608         const float blend= ((weight/2.0f)+0.5f);
609
610         if (weight<=0.25f){     // blue->cyan
611                 r_rgb[0]= 0.0f;
612                 r_rgb[1]= blend*weight*4.0f;
613                 r_rgb[2]= blend;
614         }
615         else if (weight<=0.50f){        // cyan->green
616                 r_rgb[0]= 0.0f;
617                 r_rgb[1]= blend;
618                 r_rgb[2]= blend*(1.0f-((weight-0.25f)*4.0f));
619         }
620         else if (weight <= 0.75f){      // green->yellow
621                 r_rgb[0]= blend * ((weight-0.50f)*4.0f);
622                 r_rgb[1]= blend;
623                 r_rgb[2]= 0.0f;
624         }
625         else if (weight <= 1.0f){ // yellow->red
626                 r_rgb[0]= blend;
627                 r_rgb[1]= blend * (1.0f-((weight-0.75f)*4.0f));
628                 r_rgb[2]= 0.0f;
629         }
630         else {
631                 /* exceptional value, unclamped or nan,
632                  * avoid uninitialized memory use */
633                 r_rgb[0]= 1.0f;
634                 r_rgb[1]= 0.0f;
635                 r_rgb[2]= 1.0f;
636         }
637 }
638
639 /* draw_flag's for calc_weightpaint_vert_color */
640 enum {
641         CALC_WP_MULTIPAINT= (1<<0),
642         CALC_WP_AUTO_NORMALIZE= (1<<1)
643 };
644
645 static void weightpaint_color(unsigned char r_col[4], ColorBand *coba, const float input)
646 {
647         float colf[4];
648
649         if(coba) do_colorband(coba, input, colf);
650         else     weight_to_rgb(colf, input);
651
652         r_col[3] = (unsigned char)(colf[0] * 255.0f);
653         r_col[2] = (unsigned char)(colf[1] * 255.0f);
654         r_col[1] = (unsigned char)(colf[2] * 255.0f);
655         r_col[0] = 255;
656 }
657
658
659 static void calc_weightpaint_vert_color(
660         unsigned char r_col[4],
661         MDeformVert *dv, ColorBand *coba,
662         const int defbase_tot, const int defbase_act,
663         const char *dg_flags,
664         const int selected, const int draw_flag)
665 {
666         float input = 0.0f;
667         
668         int make_black= FALSE;
669
670         if ((selected > 1) && (draw_flag & CALC_WP_MULTIPAINT)) {
671                 int was_a_nonzero= FALSE;
672                 unsigned int i;
673
674                 MDeformWeight *dw= dv->dw;
675                 for (i = dv->totweight; i != 0; i--, dw++) {
676                         /* in multipaint, get the average if auto normalize is inactive
677                          * get the sum if it is active */
678                         if (dw->def_nr < defbase_tot) {
679                                 if (dg_flags[dw->def_nr]) {
680                                         if (dw->weight) {
681                                                 input += dw->weight;
682                                                 was_a_nonzero= TRUE;
683                                         }
684                                 }
685                         }
686                 }
687
688                 /* make it black if the selected groups have no weight on a vertex */
689                 if (was_a_nonzero == FALSE) {
690                         make_black = TRUE;
691                 }
692                 else if ((draw_flag & CALC_WP_AUTO_NORMALIZE) == FALSE) {
693                         input /= selected; /* get the average */
694                 }
695         }
696         else {
697                 /* default, non tricky behavior */
698                 input= defvert_find_weight(dv, defbase_act);
699         }
700
701         if (make_black) { /* TODO, theme color */
702                 r_col[3] = 0;
703                 r_col[2] = 0;
704                 r_col[1] = 0;
705                 r_col[0] = 255;
706         }
707         else {
708                 CLAMP(input, 0.0f, 1.0f);
709                 weightpaint_color(r_col, coba, input);
710         }
711 }
712
713 static ColorBand *stored_cb= NULL;
714
715 void vDM_ColorBand_store(ColorBand *coba)
716 {
717         stored_cb= coba;
718 }
719
720 /* return an array of vertex weight colors, caller must free.
721  *
722  * note that we could save some memory and allocate RGB only but then we'd need to
723  * re-arrange the colors when copying to the face since MCol has odd ordering,
724  * so leave this as is - campbell */
725 static unsigned char *calc_weightpaint_vert_array(Object *ob, int const draw_flag, ColorBand *coba)
726 {
727         Mesh *me = ob->data;
728         unsigned char *wtcol_v = MEM_mallocN (sizeof(unsigned char) * me->totvert * 4, "weightmap_v");
729
730         if (me->dvert) {
731                 unsigned char *wc = wtcol_v;
732                 MDeformVert *dv= me->dvert;
733                 unsigned int i;
734
735                 /* varisbles for multipaint */
736                 const int defbase_tot = BLI_countlist(&ob->defbase);
737                 const int defbase_act = ob->actdef-1;
738                 char *dg_flags = MEM_mallocN(defbase_tot * sizeof(char), __func__);
739                 const int selected = get_selected_defgroups(ob, dg_flags, defbase_tot);
740                 /* const int unselected = defbase_tot - selected; */ /* UNUSED */
741
742                 for (i = me->totvert; i != 0; i--, wc += 4, dv++) {
743                         calc_weightpaint_vert_color(wc, dv, coba, defbase_tot, defbase_act, dg_flags, selected, draw_flag);
744                 }
745
746                 MEM_freeN(dg_flags);
747         }
748         else {
749                 int col_i;
750                 weightpaint_color((unsigned char *)&col_i, coba, 0.0f);
751                 fill_vn_i((int *)wtcol_v, me->totvert, col_i);
752         }
753
754         return wtcol_v;
755 }
756
757 static void add_weight_mcol_dm(Object *ob, DerivedMesh *dm, int const draw_flag)
758 {
759         ColorBand *coba= stored_cb;     /* warning, not a local var */
760
761         Mesh *me = ob->data;
762         unsigned char *wtcol_v = calc_weightpaint_vert_array(ob, draw_flag, coba);
763         unsigned char *wtcol_f = MEM_mallocN (sizeof(unsigned char) * me->totface*4*4, "weightmap_f");
764         unsigned char *wtcol_f_step = wtcol_f;
765
766         MFace *mf = me->mface;
767         int i;
768
769         for (i=0; i<me->totface; i++, mf++, wtcol_f_step += (4 * 4)) {
770 #if 0
771                 unsigned int fidx= mf->v4 ? 3:2;
772
773 #else   /* better zero out triangles 4th component. else valgrind complains when the buffer's copied */
774                 unsigned int fidx;
775                 if (mf->v4) {
776                         fidx = 3;
777                 }
778                 else {
779                         fidx = 2;
780                         *(int *)(&wtcol_f_step[3 * 4]) = 0;
781                 }
782 #endif
783
784                 do {
785                         copy_v4_v4_char((char *)&wtcol_f_step[fidx * 4],
786                                         (char *)&wtcol_v[4 * (*(&mf->v1 + fidx))]);
787                 } while (fidx--);
788         }
789
790         MEM_freeN(wtcol_v);
791
792         CustomData_add_layer(&dm->faceData, CD_WEIGHT_MCOL, CD_ASSIGN, wtcol_f, dm->numFaceData);
793 }
794
795 /* new value for useDeform -1  (hack for the gameengine):
796  * - apply only the modifier stack of the object, skipping the virtual modifiers,
797  * - don't apply the key
798  * - apply deform modifiers and input vertexco
799  */
800 static void mesh_calc_modifiers(Scene *scene, Object *ob, float (*inputVertexCos)[3],
801                                                                 DerivedMesh **deform_r, DerivedMesh **final_r,
802                                                                 int useRenderParams, int useDeform,
803                                                                 int needMapping, CustomDataMask dataMask, int index, int useCache)
804 {
805         Mesh *me = ob->data;
806         ModifierData *firstmd, *md;
807         LinkNode *datamasks, *curr;
808         CustomDataMask mask, nextmask, append_mask = 0;
809         float (*deformedVerts)[3] = NULL;
810         DerivedMesh *dm, *orcodm, *clothorcodm, *finaldm;
811         int numVerts = me->totvert;
812         int required_mode;
813         int isPrevDeform= FALSE;
814         int skipVirtualArmature = (useDeform < 0);
815         MultiresModifierData *mmd= get_multires_modifier(scene, ob, 0);
816         int has_multires = mmd != NULL, multires_applied = 0;
817         int sculpt_mode = ob->mode & OB_MODE_SCULPT && ob->sculpt;
818
819         int draw_flag= ((scene->toolsettings->multipaint ? CALC_WP_MULTIPAINT : 0) |
820                         (scene->toolsettings->auto_normalize ? CALC_WP_AUTO_NORMALIZE : 0));
821
822         if(mmd && !mmd->sculptlvl)
823                 has_multires = 0;
824
825         if(!skipVirtualArmature) {
826                 firstmd = modifiers_getVirtualModifierList(ob);
827         }
828         else {
829                 /* game engine exception */
830                 firstmd = ob->modifiers.first;
831                 if(firstmd && firstmd->type == eModifierType_Armature)
832                         firstmd = firstmd->next;
833         }
834
835         md = firstmd;
836
837         modifiers_clearErrors(ob);
838
839         if(useRenderParams) required_mode = eModifierMode_Render;
840         else required_mode = eModifierMode_Realtime;
841
842         datamasks = modifiers_calcDataMasks(scene, ob, md, dataMask, required_mode);
843         curr = datamasks;
844
845         if(deform_r) *deform_r = NULL;
846         *final_r = NULL;
847
848         if(useDeform) {
849                 if(inputVertexCos)
850                         deformedVerts = inputVertexCos;
851                 
852                 /* Apply all leading deforming modifiers */
853                 for(;md; md = md->next, curr = curr->next) {
854                         ModifierTypeInfo *mti = modifierType_getInfo(md->type);
855
856                         md->scene= scene;
857                         
858                         if(!modifier_isEnabled(scene, md, required_mode)) continue;
859                         if(useDeform < 0 && mti->dependsOnTime && mti->dependsOnTime(md)) continue;
860
861                         if(mti->type == eModifierTypeType_OnlyDeform) {
862                                 if(!deformedVerts)
863                                         deformedVerts = mesh_getVertexCos(me, &numVerts);
864
865                                 mti->deformVerts(md, ob, NULL, deformedVerts, numVerts, useRenderParams, useDeform);
866                         } else {
867                                 break;
868                         }
869                         
870                         /* grab modifiers until index i */
871                         if((index >= 0) && (modifiers_indexInObject(ob, md) >= index))
872                                 break;
873                 }
874
875                 /* Result of all leading deforming modifiers is cached for
876                  * places that wish to use the original mesh but with deformed
877                  * coordinates (vpaint, etc.)
878                  */
879                 if (deform_r) {
880                         *deform_r = CDDM_from_mesh(me, ob);
881
882                         if(deformedVerts) {
883                                 CDDM_apply_vert_coords(*deform_r, deformedVerts);
884                                 CDDM_calc_normals(*deform_r);
885                         }
886                 }
887         } else {
888                 /* default behaviour for meshes */
889                 if(inputVertexCos)
890                         deformedVerts = inputVertexCos;
891                 else
892                         deformedVerts = mesh_getVertexCos(me, &numVerts);
893         }
894
895
896         /* Now apply all remaining modifiers. If useDeform is off then skip
897          * OnlyDeform ones. 
898          */
899         dm = NULL;
900         orcodm = NULL;
901         clothorcodm = NULL;
902
903         for(;md; md = md->next, curr = curr->next) {
904                 ModifierTypeInfo *mti = modifierType_getInfo(md->type);
905
906                 md->scene= scene;
907
908                 if(!modifier_isEnabled(scene, md, required_mode)) continue;
909                 if(mti->type == eModifierTypeType_OnlyDeform && !useDeform) continue;
910                 if((mti->flags & eModifierTypeFlag_RequiresOriginalData) && dm) {
911                         modifier_setError(md, "Modifier requires original data, bad stack position.");
912                         continue;
913                 }
914                 if(sculpt_mode && (!has_multires || multires_applied)) {
915                         int unsupported= 0;
916
917                         if(scene->toolsettings->sculpt->flags & SCULPT_ONLY_DEFORM)
918                                 unsupported|= mti->type != eModifierTypeType_OnlyDeform;
919
920                         unsupported|= md->type == eModifierType_Multires && ((MultiresModifierData*)md)->sculptlvl==0;
921                         unsupported|= multires_applied;
922
923                         if(unsupported) {
924                                 modifier_setError(md, "Not supported in sculpt mode.");
925                                 continue;
926                         }
927                 }
928                 if(needMapping && !modifier_supportsMapping(md)) continue;
929                 if(useDeform < 0 && mti->dependsOnTime && mti->dependsOnTime(md)) continue;
930
931                 /* add an orco layer if needed by this modifier */
932                 if(mti->requiredDataMask)
933                         mask = mti->requiredDataMask(ob, md);
934                 else
935                         mask = 0;
936
937                 if(dm && (mask & CD_MASK_ORCO))
938                         add_orco_dm(ob, NULL, dm, orcodm, CD_ORCO);
939
940                 /* How to apply modifier depends on (a) what we already have as
941                  * a result of previous modifiers (could be a DerivedMesh or just
942                  * deformed vertices) and (b) what type the modifier is.
943                  */
944
945                 if(mti->type == eModifierTypeType_OnlyDeform) {
946                         /* No existing verts to deform, need to build them. */
947                         if(!deformedVerts) {
948                                 if(dm) {
949                                         /* Deforming a derived mesh, read the vertex locations
950                                          * out of the mesh and deform them. Once done with this
951                                          * run of deformers verts will be written back.
952                                          */
953                                         numVerts = dm->getNumVerts(dm);
954                                         deformedVerts =
955                                                 MEM_mallocN(sizeof(*deformedVerts) * numVerts, "dfmv");
956                                         dm->getVertCos(dm, deformedVerts);
957                                 } else {
958                                         deformedVerts = mesh_getVertexCos(me, &numVerts);
959                                 }
960                         }
961
962                         /* if this is not the last modifier in the stack then recalculate the normals
963                          * to avoid giving bogus normals to the next modifier see: [#23673] */
964                         if(isPrevDeform &&  mti->dependsOnNormals && mti->dependsOnNormals(md)) {
965                                 /* XXX, this covers bug #23673, but we may need normal calc for other types */
966                                 if(dm && dm->type == DM_TYPE_CDDM) {
967                                         CDDM_apply_vert_coords(dm, deformedVerts);
968                                         CDDM_calc_normals(dm);
969                                 }
970                         }
971
972                         mti->deformVerts(md, ob, dm, deformedVerts, numVerts, useRenderParams, useDeform);
973                 } else {
974                         DerivedMesh *ndm;
975
976                         /* determine which data layers are needed by following modifiers */
977                         if(curr->next)
978                                 nextmask= (CustomDataMask)GET_INT_FROM_POINTER(curr->next->link);
979                         else
980                                 nextmask= dataMask;
981
982                         /* apply vertex coordinates or build a DerivedMesh as necessary */
983                         if(dm) {
984                                 if(deformedVerts) {
985                                         DerivedMesh *tdm = CDDM_copy(dm);
986                                         dm->release(dm);
987                                         dm = tdm;
988
989                                         CDDM_apply_vert_coords(dm, deformedVerts);
990                                         CDDM_calc_normals(dm);
991                                 }
992                         } else {
993                                 dm = CDDM_from_mesh(me, ob);
994
995                                 if(deformedVerts) {
996                                         CDDM_apply_vert_coords(dm, deformedVerts);
997                                         CDDM_calc_normals(dm);
998                                 }
999
1000                                 if((dataMask & CD_MASK_WEIGHT_MCOL) && (ob->mode & OB_MODE_WEIGHT_PAINT))
1001                                         add_weight_mcol_dm(ob, dm, draw_flag); 
1002
1003                                 /* Constructive modifiers need to have an origindex
1004                                  * otherwise they wont have anywhere to copy the data from.
1005                                  *
1006                                  * Also create ORIGINDEX data if any of the following modifiers
1007                                  * requests it, this way Mirror, Solidify etc will keep ORIGINDEX
1008                                  * data by using generic DM_copy_vert_data() functions.
1009                                  */
1010                                 if(needMapping || (nextmask & CD_MASK_ORIGINDEX)) {
1011                                         /* calc */
1012                                         DM_add_vert_layer(dm, CD_ORIGINDEX, CD_CALLOC, NULL);
1013                                         DM_add_edge_layer(dm, CD_ORIGINDEX, CD_CALLOC, NULL);
1014                                         DM_add_face_layer(dm, CD_ORIGINDEX, CD_CALLOC, NULL);
1015
1016                                         range_vn_i(DM_get_vert_data_layer(dm, CD_ORIGINDEX), dm->numVertData, 0);
1017                                         range_vn_i(DM_get_edge_data_layer(dm, CD_ORIGINDEX), dm->numEdgeData, 0);
1018                                         range_vn_i(DM_get_face_data_layer(dm, CD_ORIGINDEX), dm->numFaceData, 0);
1019                                 }
1020                         }
1021
1022                         
1023                         /* set the DerivedMesh to only copy needed data */
1024                         mask= (CustomDataMask)GET_INT_FROM_POINTER(curr->link);
1025                         /* needMapping check here fixes bug [#28112], otherwise its
1026                          * possible that it wont be copied */
1027                         mask |= append_mask;
1028                         DM_set_only_copy(dm, mask | (needMapping ? CD_MASK_ORIGINDEX : 0));
1029                         
1030                         /* add cloth rest shape key if need */
1031                         if(mask & CD_MASK_CLOTH_ORCO)
1032                                 add_orco_dm(ob, NULL, dm, clothorcodm, CD_CLOTH_ORCO);
1033
1034                         /* add an origspace layer if needed */
1035                         if(((CustomDataMask)GET_INT_FROM_POINTER(curr->link)) & CD_MASK_ORIGSPACE)
1036                                 if(!CustomData_has_layer(&dm->faceData, CD_ORIGSPACE))
1037                                         DM_add_face_layer(dm, CD_ORIGSPACE, CD_DEFAULT, NULL);
1038
1039                         ndm = mti->applyModifier(md, ob, dm, useRenderParams, useCache);
1040
1041                         if(ndm) {
1042                                 /* if the modifier returned a new dm, release the old one */
1043                                 if(dm && dm != ndm) dm->release(dm);
1044
1045                                 dm = ndm;
1046
1047                                 if(deformedVerts) {
1048                                         if(deformedVerts != inputVertexCos)
1049                                                 MEM_freeN(deformedVerts);
1050
1051                                         deformedVerts = NULL;
1052                                 }
1053                         } 
1054
1055                         /* create an orco derivedmesh in parallel */
1056                         if(nextmask & CD_MASK_ORCO) {
1057                                 if(!orcodm)
1058                                         orcodm= create_orco_dm(ob, me, NULL, CD_ORCO);
1059
1060                                 nextmask &= ~CD_MASK_ORCO;
1061                                 DM_set_only_copy(orcodm, nextmask | CD_MASK_ORIGINDEX);
1062                                 ndm = mti->applyModifier(md, ob, orcodm, useRenderParams, 0);
1063
1064                                 if(ndm) {
1065                                         /* if the modifier returned a new dm, release the old one */
1066                                         if(orcodm && orcodm != ndm) orcodm->release(orcodm);
1067                                         orcodm = ndm;
1068                                 }
1069                         }
1070
1071                         /* create cloth orco derivedmesh in parallel */
1072                         if(nextmask & CD_MASK_CLOTH_ORCO) {
1073                                 if(!clothorcodm)
1074                                         clothorcodm= create_orco_dm(ob, me, NULL, CD_CLOTH_ORCO);
1075
1076                                 nextmask &= ~CD_MASK_CLOTH_ORCO;
1077                                 DM_set_only_copy(clothorcodm, nextmask | CD_MASK_ORIGINDEX);
1078                                 ndm = mti->applyModifier(md, ob, clothorcodm, useRenderParams, 0);
1079
1080                                 if(ndm) {
1081                                         /* if the modifier returned a new dm, release the old one */
1082                                         if(clothorcodm && clothorcodm != ndm) clothorcodm->release(clothorcodm);
1083                                         clothorcodm = ndm;
1084                                 }
1085                         }
1086
1087                         /* in case of dynamic paint, make sure preview mask remains for following modifiers */
1088                         if (md->type == eModifierType_DynamicPaint)
1089                                 append_mask |= CD_MASK_WEIGHT_MCOL;
1090                 }
1091
1092                 isPrevDeform= (mti->type == eModifierTypeType_OnlyDeform);
1093
1094                 /* grab modifiers until index i */
1095                 if((index >= 0) && (modifiers_indexInObject(ob, md) >= index))
1096                         break;
1097
1098                 if(sculpt_mode && md->type == eModifierType_Multires)
1099                         multires_applied = 1;
1100         }
1101
1102         for(md=firstmd; md; md=md->next)
1103                 modifier_freeTemporaryData(md);
1104
1105         /* Yay, we are done. If we have a DerivedMesh and deformed vertices
1106          * need to apply these back onto the DerivedMesh. If we have no
1107          * DerivedMesh then we need to build one.
1108          */
1109         if(dm && deformedVerts) {
1110                 finaldm = CDDM_copy(dm);
1111
1112                 dm->release(dm);
1113
1114                 CDDM_apply_vert_coords(finaldm, deformedVerts);
1115                 CDDM_calc_normals(finaldm);
1116
1117                 if((dataMask & CD_MASK_WEIGHT_MCOL) && (ob->mode & OB_MODE_WEIGHT_PAINT))
1118                         add_weight_mcol_dm(ob, finaldm, draw_flag);
1119         } else if(dm) {
1120                 finaldm = dm;
1121         } else {
1122                 finaldm = CDDM_from_mesh(me, ob);
1123
1124                 if(deformedVerts) {
1125                         CDDM_apply_vert_coords(finaldm, deformedVerts);
1126                         CDDM_calc_normals(finaldm);
1127                 }
1128
1129                 if((dataMask & CD_MASK_WEIGHT_MCOL) && (ob->mode & OB_MODE_WEIGHT_PAINT))
1130                         add_weight_mcol_dm(ob, finaldm, draw_flag);
1131         }
1132
1133         /* add an orco layer if needed */
1134         if(dataMask & CD_MASK_ORCO) {
1135                 add_orco_dm(ob, NULL, finaldm, orcodm, CD_ORCO);
1136
1137                 if(deform_r && *deform_r)
1138                         add_orco_dm(ob, NULL, *deform_r, NULL, CD_ORCO);
1139         }
1140
1141 #ifdef WITH_GAMEENGINE
1142         /* NavMesh - this is a hack but saves having a NavMesh modifier */
1143         if ((ob->gameflag & OB_NAVMESH) && (finaldm->type == DM_TYPE_CDDM)) {
1144                 DerivedMesh *tdm;
1145                 tdm= navmesh_dm_createNavMeshForVisualization(finaldm);
1146                 if (finaldm != tdm) {
1147                         finaldm->release(finaldm);
1148                         finaldm= tdm;
1149                 }
1150         }
1151 #endif /* WITH_GAMEENGINE */
1152
1153         *final_r = finaldm;
1154
1155         if(orcodm)
1156                 orcodm->release(orcodm);
1157         if(clothorcodm)
1158                 clothorcodm->release(clothorcodm);
1159
1160         if(deformedVerts && deformedVerts != inputVertexCos)
1161                 MEM_freeN(deformedVerts);
1162
1163         BLI_linklist_free(datamasks, NULL);
1164 }
1165
1166 float (*editmesh_get_vertex_cos(EditMesh *em, int *numVerts_r))[3]
1167 {
1168         int i, numVerts = *numVerts_r = BLI_countlist(&em->verts);
1169         float (*cos)[3];
1170         EditVert *eve;
1171
1172         cos = MEM_mallocN(sizeof(*cos)*numVerts, "vertexcos");
1173         for (i=0,eve=em->verts.first; i<numVerts; i++,eve=eve->next) {
1174                 copy_v3_v3(cos[i], eve->co);
1175         }
1176
1177         return cos;
1178 }
1179
1180 int editmesh_modifier_is_enabled(Scene *scene, ModifierData *md, DerivedMesh *dm)
1181 {
1182         ModifierTypeInfo *mti = modifierType_getInfo(md->type);
1183         int required_mode = eModifierMode_Realtime | eModifierMode_Editmode;
1184
1185         if(!modifier_isEnabled(scene, md, required_mode)) return 0;
1186         if((mti->flags & eModifierTypeFlag_RequiresOriginalData) && dm) {
1187                 modifier_setError(md, "Modifier requires original data, bad stack position.");
1188                 return 0;
1189         }
1190         
1191         return 1;
1192 }
1193
1194 static void editmesh_calc_modifiers(Scene *scene, Object *ob, EditMesh *em, DerivedMesh **cage_r,
1195                                                                         DerivedMesh **final_r,
1196                                                                         CustomDataMask dataMask)
1197 {
1198         ModifierData *md;
1199         float (*deformedVerts)[3] = NULL;
1200         CustomDataMask mask;
1201         DerivedMesh *dm, *orcodm = NULL;
1202         int i, numVerts = 0, cageIndex = modifiers_getCageIndex(scene, ob, NULL, 1);
1203         LinkNode *datamasks, *curr;
1204         int required_mode = eModifierMode_Realtime | eModifierMode_Editmode;
1205
1206         modifiers_clearErrors(ob);
1207
1208         if(cage_r && cageIndex == -1) {
1209                 *cage_r = editmesh_get_derived(em, NULL);
1210         }
1211
1212         dm = NULL;
1213         md = modifiers_getVirtualModifierList(ob);
1214
1215         datamasks = modifiers_calcDataMasks(scene, ob, md, dataMask, required_mode);
1216
1217         curr = datamasks;
1218         for(i = 0; md; i++, md = md->next, curr = curr->next) {
1219                 ModifierTypeInfo *mti = modifierType_getInfo(md->type);
1220
1221                 md->scene= scene;
1222                 
1223                 if(!editmesh_modifier_is_enabled(scene, md, dm))
1224                         continue;
1225
1226                 /* add an orco layer if needed by this modifier */
1227                 if(dm && mti->requiredDataMask) {
1228                         mask = mti->requiredDataMask(ob, md);
1229                         if(mask & CD_MASK_ORCO)
1230                                 add_orco_dm(ob, em, dm, orcodm, CD_ORCO);
1231                 }
1232
1233                 /* How to apply modifier depends on (a) what we already have as
1234                  * a result of previous modifiers (could be a DerivedMesh or just
1235                  * deformed vertices) and (b) what type the modifier is.
1236                  */
1237
1238                 if(mti->type == eModifierTypeType_OnlyDeform) {
1239                         /* No existing verts to deform, need to build them. */
1240                         if(!deformedVerts) {
1241                                 if(dm) {
1242                                         /* Deforming a derived mesh, read the vertex locations
1243                                          * out of the mesh and deform them. Once done with this
1244                                          * run of deformers verts will be written back.
1245                                          */
1246                                         numVerts = dm->getNumVerts(dm);
1247                                         deformedVerts =
1248                                                 MEM_mallocN(sizeof(*deformedVerts) * numVerts, "dfmv");
1249                                         dm->getVertCos(dm, deformedVerts);
1250                                 } else {
1251                                         deformedVerts = editmesh_get_vertex_cos(em, &numVerts);
1252                                 }
1253                         }
1254
1255                         if (mti->deformVertsEM)
1256                                 mti->deformVertsEM(md, ob, em, dm, deformedVerts, numVerts);
1257                         else mti->deformVerts(md, ob, dm, deformedVerts, numVerts, 0, 0);
1258                 } else {
1259                         DerivedMesh *ndm;
1260
1261                         /* apply vertex coordinates or build a DerivedMesh as necessary */
1262                         if(dm) {
1263                                 if(deformedVerts) {
1264                                         DerivedMesh *tdm = CDDM_copy(dm);
1265                                         if(!(cage_r && dm == *cage_r)) dm->release(dm);
1266                                         dm = tdm;
1267
1268                                         CDDM_apply_vert_coords(dm, deformedVerts);
1269                                         CDDM_calc_normals(dm);
1270                                 } else if(cage_r && dm == *cage_r) {
1271                                         /* dm may be changed by this modifier, so we need to copy it
1272                                          */
1273                                         dm = CDDM_copy(dm);
1274                                 }
1275
1276                         } else {
1277                                 dm = CDDM_from_editmesh(em, ob->data);
1278
1279                                 if(deformedVerts) {
1280                                         CDDM_apply_vert_coords(dm, deformedVerts);
1281                                         CDDM_calc_normals(dm);
1282                                 }
1283                         }
1284
1285                         /* create an orco derivedmesh in parallel */
1286                         mask= (CustomDataMask)GET_INT_FROM_POINTER(curr->link);
1287                         if(mask & CD_MASK_ORCO) {
1288                                 if(!orcodm)
1289                                         orcodm= create_orco_dm(ob, ob->data, em, CD_ORCO);
1290
1291                                 mask &= ~CD_MASK_ORCO;
1292                                 DM_set_only_copy(orcodm, mask | CD_MASK_ORIGINDEX);
1293
1294                                 if (mti->applyModifierEM)
1295                                         ndm = mti->applyModifierEM(md, ob, em, orcodm);
1296                                 else
1297                                         ndm = mti->applyModifier(md, ob, orcodm, 0, 0);
1298
1299                                 if(ndm) {
1300                                         /* if the modifier returned a new dm, release the old one */
1301                                         if(orcodm && orcodm != ndm) orcodm->release(orcodm);
1302                                         orcodm = ndm;
1303                                 }
1304                         }
1305
1306                         /* set the DerivedMesh to only copy needed data */
1307                         mask= (CustomDataMask)GET_INT_FROM_POINTER(curr->link); /* CD_MASK_ORCO may have been cleared above */
1308
1309                         DM_set_only_copy(dm, mask | CD_MASK_ORIGINDEX);
1310
1311                         if(mask & CD_MASK_ORIGSPACE)
1312                                 if(!CustomData_has_layer(&dm->faceData, CD_ORIGSPACE))
1313                                         DM_add_face_layer(dm, CD_ORIGSPACE, CD_DEFAULT, NULL);
1314                         
1315                         if (mti->applyModifierEM)
1316                                 ndm = mti->applyModifierEM(md, ob, em, dm);
1317                         else
1318                                 ndm = mti->applyModifier(md, ob, dm, 0, 0);
1319
1320                         if (ndm) {
1321                                 if(dm && dm != ndm)
1322                                         dm->release(dm);
1323
1324                                 dm = ndm;
1325
1326                                 if (deformedVerts) {
1327                                         MEM_freeN(deformedVerts);
1328                                         deformedVerts = NULL;
1329                                 }
1330                         }
1331                 }
1332
1333                 if(cage_r && i == cageIndex) {
1334                         if(dm && deformedVerts) {
1335                                 *cage_r = CDDM_copy(dm);
1336                                 CDDM_apply_vert_coords(*cage_r, deformedVerts);
1337                         } else if(dm) {
1338                                 *cage_r = dm;
1339                         } else {
1340                                 *cage_r =
1341                                         editmesh_get_derived(em,
1342                                                 deformedVerts ? MEM_dupallocN(deformedVerts) : NULL);
1343                         }
1344                 }
1345         }
1346
1347         BLI_linklist_free(datamasks, NULL);
1348
1349         /* Yay, we are done. If we have a DerivedMesh and deformed vertices need
1350          * to apply these back onto the DerivedMesh. If we have no DerivedMesh
1351          * then we need to build one.
1352          */
1353         if(dm && deformedVerts) {
1354                 *final_r = CDDM_copy(dm);
1355
1356                 if(!(cage_r && dm == *cage_r)) dm->release(dm);
1357
1358                 CDDM_apply_vert_coords(*final_r, deformedVerts);
1359                 CDDM_calc_normals(*final_r);
1360         } else if (dm) {
1361                 *final_r = dm;
1362         } else if (!deformedVerts && cage_r && *cage_r) {
1363                 *final_r = *cage_r;
1364         } else {
1365                 *final_r = editmesh_get_derived(em, deformedVerts);
1366                 deformedVerts = NULL;
1367         }
1368
1369         /* add an orco layer if needed */
1370         if(dataMask & CD_MASK_ORCO)
1371                 add_orco_dm(ob, em, *final_r, orcodm, CD_ORCO);
1372
1373         if(orcodm)
1374                 orcodm->release(orcodm);
1375
1376         if(deformedVerts)
1377                 MEM_freeN(deformedVerts);
1378 }
1379
1380 static void clear_mesh_caches(Object *ob)
1381 {
1382         Mesh *me= ob->data;
1383
1384                 /* also serves as signal to remake texspace */
1385         if (ob->bb) {
1386                 MEM_freeN(ob->bb);
1387                 ob->bb = NULL;
1388         }
1389         if (me->bb) {
1390                 MEM_freeN(me->bb);
1391                 me->bb = NULL;
1392         }
1393
1394         freedisplist(&ob->disp);
1395
1396         if (ob->derivedFinal) {
1397                 ob->derivedFinal->needsFree = 1;
1398                 ob->derivedFinal->release(ob->derivedFinal);
1399                 ob->derivedFinal= NULL;
1400         }
1401         if (ob->derivedDeform) {
1402                 ob->derivedDeform->needsFree = 1;
1403                 ob->derivedDeform->release(ob->derivedDeform);
1404                 ob->derivedDeform= NULL;
1405         }
1406
1407         if(ob->sculpt) {
1408                 object_sculpt_modifiers_changed(ob);
1409         }
1410 }
1411
1412 static void mesh_build_data(Scene *scene, Object *ob, CustomDataMask dataMask)
1413 {
1414         Object *obact = scene->basact?scene->basact->object:NULL;
1415         int editing = paint_facesel_test(ob) || paint_vertsel_test(ob);/* paint_vertsel_test */
1416         /* weight paint and face select need original indices because of selection buffer drawing */
1417         int needMapping = (ob==obact) && (editing || (ob->mode & (OB_MODE_WEIGHT_PAINT|OB_MODE_VERTEX_PAINT)));
1418
1419         clear_mesh_caches(ob);
1420
1421         mesh_calc_modifiers(scene, ob, NULL, &ob->derivedDeform,
1422                                                 &ob->derivedFinal, 0, 1,
1423                                                 needMapping, dataMask, -1, 1);
1424
1425         DM_set_object_boundbox (ob, ob->derivedFinal);
1426
1427         ob->derivedFinal->needsFree = 0;
1428         ob->derivedDeform->needsFree = 0;
1429         ob->lastDataMask = dataMask;
1430 }
1431
1432 static void editmesh_build_data(Scene *scene, Object *obedit, EditMesh *em, CustomDataMask dataMask)
1433 {
1434         clear_mesh_caches(obedit);
1435
1436         if (em->derivedFinal) {
1437                 if (em->derivedFinal!=em->derivedCage) {
1438                         em->derivedFinal->needsFree = 1;
1439                         em->derivedFinal->release(em->derivedFinal);
1440                 }
1441                 em->derivedFinal = NULL;
1442         }
1443         if (em->derivedCage) {
1444                 em->derivedCage->needsFree = 1;
1445                 em->derivedCage->release(em->derivedCage);
1446                 em->derivedCage = NULL;
1447         }
1448
1449         editmesh_calc_modifiers(scene, obedit, em, &em->derivedCage, &em->derivedFinal, dataMask);
1450         DM_set_object_boundbox (obedit, em->derivedFinal);
1451
1452         em->lastDataMask = dataMask;
1453         em->derivedFinal->needsFree = 0;
1454         em->derivedCage->needsFree = 0;
1455 }
1456
1457 void makeDerivedMesh(Scene *scene, Object *ob, EditMesh *em, CustomDataMask dataMask)
1458 {
1459         if (em) {
1460                 editmesh_build_data(scene, ob, em, dataMask);
1461         } else {
1462                 mesh_build_data(scene, ob, dataMask);
1463         }
1464 }
1465
1466 /***/
1467
1468 DerivedMesh *mesh_get_derived_final(Scene *scene, Object *ob, CustomDataMask dataMask)
1469 {
1470         /* if there's no derived mesh or the last data mask used doesn't include
1471          * the data we need, rebuild the derived mesh
1472          */
1473         if(!ob->derivedFinal || (dataMask & ob->lastDataMask) != dataMask)
1474                 mesh_build_data(scene, ob, dataMask);
1475
1476         return ob->derivedFinal;
1477 }
1478
1479 DerivedMesh *mesh_get_derived_deform(Scene *scene, Object *ob, CustomDataMask dataMask)
1480 {
1481         /* if there's no derived mesh or the last data mask used doesn't include
1482          * the data we need, rebuild the derived mesh
1483          */
1484         if(!ob->derivedDeform || (dataMask & ob->lastDataMask) != dataMask)
1485                 mesh_build_data(scene, ob, dataMask);
1486
1487         return ob->derivedDeform;
1488 }
1489
1490 DerivedMesh *mesh_create_derived_render(Scene *scene, Object *ob, CustomDataMask dataMask)
1491 {
1492         DerivedMesh *final;
1493         
1494         mesh_calc_modifiers(scene, ob, NULL, NULL, &final, 1, 1, 0, dataMask, -1, 0);
1495
1496         return final;
1497 }
1498
1499 DerivedMesh *mesh_create_derived_index_render(Scene *scene, Object *ob, CustomDataMask dataMask, int index)
1500 {
1501         DerivedMesh *final;
1502         
1503         mesh_calc_modifiers(scene, ob, NULL, NULL, &final, 1, 1, 0, dataMask, index, 0);
1504
1505         return final;
1506 }
1507
1508 DerivedMesh *mesh_create_derived_view(Scene *scene, Object *ob, CustomDataMask dataMask)
1509 {
1510         DerivedMesh *final;
1511
1512         mesh_calc_modifiers(scene, ob, NULL, NULL, &final, 0, 1, 0, dataMask, -1, 0);
1513
1514         return final;
1515 }
1516
1517 DerivedMesh *mesh_create_derived_no_deform(Scene *scene, Object *ob, float (*vertCos)[3],
1518                                                                                    CustomDataMask dataMask)
1519 {
1520         DerivedMesh *final;
1521         
1522         mesh_calc_modifiers(scene, ob, vertCos, NULL, &final, 0, 0, 0, dataMask, -1, 0);
1523
1524         return final;
1525 }
1526
1527 DerivedMesh *mesh_create_derived_no_virtual(Scene *scene, Object *ob, float (*vertCos)[3],
1528                                                                                         CustomDataMask dataMask)
1529 {
1530         DerivedMesh *final;
1531         
1532         mesh_calc_modifiers(scene, ob, vertCos, NULL, &final, 0, -1, 0, dataMask, -1, 0);
1533
1534         return final;
1535 }
1536
1537 DerivedMesh *mesh_create_derived_physics(Scene *scene, Object *ob, float (*vertCos)[3],
1538                                                                                         CustomDataMask dataMask)
1539 {
1540         DerivedMesh *final;
1541         
1542         mesh_calc_modifiers(scene, ob, vertCos, NULL, &final, 0, -1, 1, dataMask, -1, 0);
1543
1544         return final;
1545 }
1546
1547 DerivedMesh *mesh_create_derived_no_deform_render(Scene *scene, Object *ob,
1548                                                                                                   float (*vertCos)[3],
1549                                                                                                   CustomDataMask dataMask)
1550 {
1551         DerivedMesh *final;
1552
1553         mesh_calc_modifiers(scene, ob, vertCos, NULL, &final, 1, 0, 0, dataMask, -1, 0);
1554
1555         return final;
1556 }
1557
1558 /***/
1559
1560 DerivedMesh *editmesh_get_derived_cage_and_final(Scene *scene, Object *obedit, EditMesh *em, DerivedMesh **final_r,
1561                                                                                                  CustomDataMask dataMask)
1562 {
1563         /* if there's no derived mesh or the last data mask used doesn't include
1564          * the data we need, rebuild the derived mesh
1565          */
1566         if(!em->derivedCage ||
1567            (em->lastDataMask & dataMask) != dataMask)
1568                 editmesh_build_data(scene, obedit, em, dataMask);
1569
1570         *final_r = em->derivedFinal;
1571         return em->derivedCage;
1572 }
1573
1574 DerivedMesh *editmesh_get_derived_cage(Scene *scene, Object *obedit, EditMesh *em, CustomDataMask dataMask)
1575 {
1576         /* if there's no derived mesh or the last data mask used doesn't include
1577          * the data we need, rebuild the derived mesh
1578          */
1579         if(!em->derivedCage ||
1580            (em->lastDataMask & dataMask) != dataMask)
1581                 editmesh_build_data(scene, obedit, em, dataMask);
1582
1583         return em->derivedCage;
1584 }
1585
1586 DerivedMesh *editmesh_get_derived_base(Object *UNUSED(obedit), EditMesh *em)
1587 {
1588         return editmesh_get_derived(em, NULL);
1589 }
1590
1591
1592 /* ********* For those who don't grasp derived stuff! (ton) :) *************** */
1593
1594 static void make_vertexcosnos__mapFunc(void *userData, int index, float *co, float *no_f, short *no_s)
1595 {
1596         float *vec = userData;
1597         
1598         vec+= 6*index;
1599
1600         /* check if we've been here before (normal should not be 0) */
1601         if(vec[3] || vec[4] || vec[5]) return;
1602
1603         copy_v3_v3(vec, co);
1604         vec+= 3;
1605         if(no_f) {
1606                 copy_v3_v3(vec, no_f);
1607         }
1608         else {
1609                 normal_short_to_float_v3(vec, no_s);
1610         }
1611 }
1612
1613 /* always returns original amount me->totvert of vertices and normals, but fully deformed and subsurfered */
1614 /* this is needed for all code using vertexgroups (no subsurf support) */
1615 /* it stores the normals as floats, but they can still be scaled as shorts (32767 = unit) */
1616 /* in use now by vertex/weight paint and particle generating */
1617
1618 float *mesh_get_mapped_verts_nors(Scene *scene, Object *ob)
1619 {
1620         Mesh *me= ob->data;
1621         DerivedMesh *dm;
1622         float *vertexcosnos;
1623         
1624         /* lets prevent crashing... */
1625         if(ob->type!=OB_MESH || me->totvert==0)
1626                 return NULL;
1627         
1628         dm= mesh_get_derived_final(scene, ob, CD_MASK_BAREMESH);
1629         vertexcosnos= MEM_callocN(6*sizeof(float)*me->totvert, "vertexcosnos map");
1630         
1631         if(dm->foreachMappedVert) {
1632                 dm->foreachMappedVert(dm, make_vertexcosnos__mapFunc, vertexcosnos);
1633         }
1634         else {
1635                 float *fp= vertexcosnos;
1636                 int a;
1637                 
1638                 for(a=0; a< me->totvert; a++, fp+=6) {
1639                         dm->getVertCo(dm, a, fp);
1640                         dm->getVertNo(dm, a, fp+3);
1641                 }
1642         }
1643         
1644         dm->release(dm);
1645         return vertexcosnos;
1646 }
1647
1648 /* ******************* GLSL ******************** */
1649
1650 typedef struct
1651 {
1652         float * precomputedFaceNormals;
1653         MTFace * mtface;        // texture coordinates
1654         MFace * mface;          // indices
1655         MVert * mvert;          // vertices & normals
1656         float (*orco)[3];
1657         float (*tangent)[4];    // destination
1658         int numFaces;
1659
1660 } SGLSLMeshToTangent;
1661
1662 // interface
1663 #include "mikktspace.h"
1664
1665 static int GetNumFaces(const SMikkTSpaceContext * pContext)
1666 {
1667         SGLSLMeshToTangent * pMesh = (SGLSLMeshToTangent *) pContext->m_pUserData;
1668         return pMesh->numFaces;
1669 }
1670
1671 static int GetNumVertsOfFace(const SMikkTSpaceContext * pContext, const int face_num)
1672 {
1673         SGLSLMeshToTangent * pMesh = (SGLSLMeshToTangent *) pContext->m_pUserData;
1674         return pMesh->mface[face_num].v4!=0 ? 4 : 3;
1675 }
1676
1677 static void GetPosition(const SMikkTSpaceContext * pContext, float fPos[], const int face_num, const int vert_index)
1678 {
1679         //assert(vert_index>=0 && vert_index<4);
1680         SGLSLMeshToTangent * pMesh = (SGLSLMeshToTangent *) pContext->m_pUserData;
1681         const float *co= pMesh->mvert[(&pMesh->mface[face_num].v1)[vert_index]].co;
1682         copy_v3_v3(fPos, co);
1683 }
1684
1685 static void GetTextureCoordinate(const SMikkTSpaceContext * pContext, float fUV[], const int face_num, const int vert_index)
1686 {
1687         //assert(vert_index>=0 && vert_index<4);
1688         SGLSLMeshToTangent * pMesh = (SGLSLMeshToTangent *) pContext->m_pUserData;
1689
1690         if(pMesh->mtface!=NULL) {
1691                 float * uv = pMesh->mtface[face_num].uv[vert_index];
1692                 fUV[0]=uv[0]; fUV[1]=uv[1];
1693         }
1694         else {
1695                 const float *orco= pMesh->orco[(&pMesh->mface[face_num].v1)[vert_index]];
1696                 map_to_sphere( &fUV[0], &fUV[1], orco[0], orco[1], orco[2]);
1697         }
1698 }
1699
1700 static void GetNormal(const SMikkTSpaceContext * pContext, float fNorm[], const int face_num, const int vert_index)
1701 {
1702         //assert(vert_index>=0 && vert_index<4);
1703         SGLSLMeshToTangent * pMesh = (SGLSLMeshToTangent *) pContext->m_pUserData;
1704
1705         const int smoothnormal = (pMesh->mface[face_num].flag & ME_SMOOTH);
1706         if(!smoothnormal) {     // flat
1707                 if(pMesh->precomputedFaceNormals) {
1708                         copy_v3_v3(fNorm, &pMesh->precomputedFaceNormals[3*face_num]);
1709                 }
1710                 else {
1711                         MFace *mf= &pMesh->mface[face_num];
1712                         float *p0= pMesh->mvert[mf->v1].co;
1713                         float *p1= pMesh->mvert[mf->v2].co;
1714                         float *p2= pMesh->mvert[mf->v3].co;
1715
1716                         if(mf->v4) {
1717                                 float *p3 = pMesh->mvert[mf->v4].co;
1718                                 normal_quad_v3(fNorm, p0, p1, p2, p3);
1719                         }
1720                         else {
1721                                 normal_tri_v3(fNorm, p0, p1, p2);
1722                         }
1723                 }
1724         }
1725         else {
1726                 const short *no= pMesh->mvert[(&pMesh->mface[face_num].v1)[vert_index]].no;
1727                 normal_short_to_float_v3(fNorm, no);
1728         }
1729 }
1730 static void SetTSpace(const SMikkTSpaceContext * pContext, const float fvTangent[], const float fSign, const int face_num, const int iVert)
1731 {
1732         //assert(vert_index>=0 && vert_index<4);
1733         SGLSLMeshToTangent * pMesh = (SGLSLMeshToTangent *) pContext->m_pUserData;
1734         float * pRes = pMesh->tangent[4*face_num+iVert];
1735         copy_v3_v3(pRes, fvTangent);
1736         pRes[3]=fSign;
1737 }
1738
1739
1740 void DM_add_tangent_layer(DerivedMesh *dm)
1741 {
1742         /* mesh vars */
1743         MTFace *mtface, *tf;
1744         MFace *mface, *mf;
1745         MVert *mvert, *v1, *v2, *v3, *v4;
1746         MemArena *arena= NULL;
1747         VertexTangent **vtangents= NULL;
1748         float (*orco)[3]= NULL, (*tangent)[4];
1749         float *uv1, *uv2, *uv3, *uv4, *vtang;
1750         float fno[3], tang[3], uv[4][2];
1751         int i, j, len, mf_vi[4], totvert, totface, iCalcNewMethod;
1752         float *nors;
1753
1754         if(CustomData_get_layer_index(&dm->faceData, CD_TANGENT) != -1)
1755                 return;
1756
1757         nors = dm->getFaceDataArray(dm, CD_NORMAL);
1758
1759         /* check we have all the needed layers */
1760         totvert= dm->getNumVerts(dm);
1761         totface= dm->getNumFaces(dm);
1762
1763         mvert= dm->getVertArray(dm);
1764         mface= dm->getFaceArray(dm);
1765         mtface= dm->getFaceDataArray(dm, CD_MTFACE);
1766
1767         if(!mtface) {
1768                 orco= dm->getVertDataArray(dm, CD_ORCO);
1769                 if(!orco)
1770                         return;
1771         }
1772         
1773         /* create tangent layer */
1774         DM_add_face_layer(dm, CD_TANGENT, CD_CALLOC, NULL);
1775         tangent= DM_get_face_data_layer(dm, CD_TANGENT);
1776         
1777         /* allocate some space */
1778         arena= BLI_memarena_new(BLI_MEMARENA_STD_BUFSIZE, "tangent layer arena");
1779         BLI_memarena_use_calloc(arena);
1780         vtangents= MEM_callocN(sizeof(VertexTangent*)*totvert, "VertexTangent");
1781
1782         // new computation method
1783         iCalcNewMethod = 1;
1784         if(iCalcNewMethod != 0) {
1785                 SGLSLMeshToTangent mesh2tangent= {0};
1786                 SMikkTSpaceContext sContext= {0};
1787                 SMikkTSpaceInterface sInterface= {0};
1788
1789                 mesh2tangent.precomputedFaceNormals = nors;
1790                 mesh2tangent.mtface = mtface;
1791                 mesh2tangent.mface = mface;
1792                 mesh2tangent.mvert = mvert;
1793                 mesh2tangent.orco = orco;
1794                 mesh2tangent.tangent = tangent;
1795                 mesh2tangent.numFaces = totface;
1796
1797                 sContext.m_pUserData = &mesh2tangent;
1798                 sContext.m_pInterface = &sInterface;
1799                 sInterface.m_getNumFaces = GetNumFaces;
1800                 sInterface.m_getNumVerticesOfFace = GetNumVertsOfFace;
1801                 sInterface.m_getPosition = GetPosition;
1802                 sInterface.m_getTexCoord = GetTextureCoordinate;
1803                 sInterface.m_getNormal = GetNormal;
1804                 sInterface.m_setTSpaceBasic = SetTSpace;
1805
1806                 // 0 if failed
1807                 iCalcNewMethod = genTangSpaceDefault(&sContext);
1808         }
1809
1810         if(!iCalcNewMethod) {
1811                 /* sum tangents at connected vertices */
1812                 for(i=0, tf=mtface, mf=mface; i < totface; mf++, tf++, i++) {
1813                         v1= &mvert[mf->v1];
1814                         v2= &mvert[mf->v2];
1815                         v3= &mvert[mf->v3];
1816
1817                         if (mf->v4) {
1818                                 v4= &mvert[mf->v4];
1819                                 normal_quad_v3( fno,v4->co, v3->co, v2->co, v1->co);
1820                         }
1821                         else {
1822                                 v4= NULL;
1823                                 normal_tri_v3( fno,v3->co, v2->co, v1->co);
1824                         }
1825                 
1826                         if(mtface) {
1827                                 uv1= tf->uv[0];
1828                                 uv2= tf->uv[1];
1829                                 uv3= tf->uv[2];
1830                                 uv4= tf->uv[3];
1831                         }
1832                         else {
1833                                 uv1= uv[0]; uv2= uv[1]; uv3= uv[2]; uv4= uv[3];
1834                                 map_to_sphere( &uv[0][0], &uv[0][1],orco[mf->v1][0], orco[mf->v1][1], orco[mf->v1][2]);
1835                                 map_to_sphere( &uv[1][0], &uv[1][1],orco[mf->v2][0], orco[mf->v2][1], orco[mf->v2][2]);
1836                                 map_to_sphere( &uv[2][0], &uv[2][1],orco[mf->v3][0], orco[mf->v3][1], orco[mf->v3][2]);
1837                                 if(v4)
1838                                         map_to_sphere( &uv[3][0], &uv[3][1],orco[mf->v4][0], orco[mf->v4][1], orco[mf->v4][2]);
1839                         }
1840                 
1841                         tangent_from_uv(uv1, uv2, uv3, v1->co, v2->co, v3->co, fno, tang);
1842                         sum_or_add_vertex_tangent(arena, &vtangents[mf->v1], tang, uv1);
1843                         sum_or_add_vertex_tangent(arena, &vtangents[mf->v2], tang, uv2);
1844                         sum_or_add_vertex_tangent(arena, &vtangents[mf->v3], tang, uv3);
1845                 
1846                         if(mf->v4) {
1847                                 v4= &mvert[mf->v4];
1848                         
1849                                 tangent_from_uv(uv1, uv3, uv4, v1->co, v3->co, v4->co, fno, tang);
1850                                 sum_or_add_vertex_tangent(arena, &vtangents[mf->v1], tang, uv1);
1851                                 sum_or_add_vertex_tangent(arena, &vtangents[mf->v3], tang, uv3);
1852                                 sum_or_add_vertex_tangent(arena, &vtangents[mf->v4], tang, uv4);
1853                         }
1854                 }
1855         
1856                 /* write tangent to layer */
1857                 for(i=0, tf=mtface, mf=mface; i < totface; mf++, tf++, i++, tangent+=4) {
1858                         len= (mf->v4)? 4 : 3; 
1859
1860                         if(mtface == NULL) {
1861                                 map_to_sphere( &uv[0][0], &uv[0][1],orco[mf->v1][0], orco[mf->v1][1], orco[mf->v1][2]);
1862                                 map_to_sphere( &uv[1][0], &uv[1][1],orco[mf->v2][0], orco[mf->v2][1], orco[mf->v2][2]);
1863                                 map_to_sphere( &uv[2][0], &uv[2][1],orco[mf->v3][0], orco[mf->v3][1], orco[mf->v3][2]);
1864                                 if(len==4)
1865                                         map_to_sphere( &uv[3][0], &uv[3][1],orco[mf->v4][0], orco[mf->v4][1], orco[mf->v4][2]);
1866                         }
1867                 
1868                         mf_vi[0]= mf->v1;
1869                         mf_vi[1]= mf->v2;
1870                         mf_vi[2]= mf->v3;
1871                         mf_vi[3]= mf->v4;
1872                 
1873                         for(j=0; j<len; j++) {
1874                                 vtang= find_vertex_tangent(vtangents[mf_vi[j]], mtface ? tf->uv[j] : uv[j]);
1875                                 normalize_v3_v3(tangent[j], vtang);
1876                                 ((float *) tangent[j])[3]=1.0f;
1877                         }
1878                 }
1879         }
1880         
1881         BLI_memarena_free(arena);
1882         MEM_freeN(vtangents);
1883 }
1884
1885 void DM_calc_auto_bump_scale(DerivedMesh *dm)
1886 {
1887         /* int totvert= dm->getNumVerts(dm); */ /* UNUSED */
1888         int totface= dm->getNumFaces(dm);
1889
1890         MVert * mvert = dm->getVertArray(dm);
1891         MFace * mface = dm->getFaceArray(dm);
1892         MTFace * mtface = dm->getFaceDataArray(dm, CD_MTFACE);
1893
1894         if(mtface)
1895         {
1896                 double dsum = 0.0;
1897                 int nr_accumulated = 0;
1898                 int f;
1899
1900                 for ( f=0; f<totface; f++ )
1901                 {
1902                         {
1903                                 float * verts[4], * tex_coords[4];
1904                                 const int nr_verts = mface[f].v4!=0 ? 4 : 3;
1905                                 int i, is_degenerate;
1906
1907                                 verts[0]=mvert[mface[f].v1].co; verts[1]=mvert[mface[f].v2].co; verts[2]=mvert[mface[f].v3].co;
1908                                 tex_coords[0]=mtface[f].uv[0]; tex_coords[1]=mtface[f].uv[1]; tex_coords[2]=mtface[f].uv[2];
1909                                 if(nr_verts==4)
1910                                 {
1911                                         verts[3]=mvert[mface[f].v4].co;
1912                                         tex_coords[3]=mtface[f].uv[3];
1913                                 }
1914
1915                                 // discard degenerate faces
1916                                 is_degenerate = 0;
1917                                 if(     equals_v3v3(verts[0], verts[1]) || equals_v3v3(verts[0], verts[2]) || equals_v3v3(verts[1], verts[2]) ||
1918                                         equals_v2v2(tex_coords[0], tex_coords[1]) || equals_v2v2(tex_coords[0], tex_coords[2]) || equals_v2v2(tex_coords[1], tex_coords[2]) )
1919                                 {
1920                                         is_degenerate = 1;
1921                                 }
1922
1923                                 // verify last vertex as well if this is a quad
1924                                 if ( is_degenerate==0 && nr_verts==4 )
1925                                 {
1926                                         if(     equals_v3v3(verts[3], verts[0]) || equals_v3v3(verts[3], verts[1]) || equals_v3v3(verts[3], verts[2]) ||
1927                                                 equals_v2v2(tex_coords[3], tex_coords[0]) || equals_v2v2(tex_coords[3], tex_coords[1]) || equals_v2v2(tex_coords[3], tex_coords[2]) )
1928                                         {
1929                                                 is_degenerate = 1;
1930                                         }
1931
1932                                         // verify the winding is consistent
1933                                         if ( is_degenerate==0 )
1934                                         {
1935                                                 float prev_edge[2];
1936                                                 int is_signed = 0;
1937                                                 sub_v2_v2v2(prev_edge, tex_coords[0], tex_coords[3]);
1938
1939                                                 i = 0;
1940                                                 while ( is_degenerate==0 && i<4 )
1941                                                 {
1942                                                         float cur_edge[2], signed_area;
1943                                                         sub_v2_v2v2(cur_edge, tex_coords[(i+1)&0x3], tex_coords[i]);
1944                                                         signed_area = prev_edge[0]*cur_edge[1] - prev_edge[1]*cur_edge[0];
1945                                                         if ( i==0 ) is_signed = signed_area<0.0f ? 1 : 0;
1946                                                         else if((is_signed!=0)!=(signed_area<0.0f)) is_degenerate=1;
1947
1948                                                         if ( is_degenerate==0 )
1949                                                         {
1950                                                                 copy_v2_v2(prev_edge, cur_edge);
1951                                                                 ++i;
1952                                                         }
1953                                                 }
1954                                         }
1955                                 }
1956
1957                                 // proceed if not a degenerate face
1958                                 if ( is_degenerate==0 )
1959                                 {
1960                                         int nr_tris_to_pile=0;
1961                                         // quads split at shortest diagonal
1962                                         int offs = 0;           // initial triangulation is 0,1,2 and 0, 2, 3
1963                                         if ( nr_verts==4 )
1964                                         {
1965                                                 float pos_len_diag0, pos_len_diag1;
1966                                                 float vtmp[3];
1967                                                 sub_v3_v3v3(vtmp, verts[2], verts[0]);
1968                                                 pos_len_diag0 = dot_v3v3(vtmp, vtmp);
1969                                                 sub_v3_v3v3(vtmp, verts[3], verts[1]);
1970                                                 pos_len_diag1 = dot_v3v3(vtmp, vtmp);
1971
1972                                                 if(pos_len_diag1<pos_len_diag0)
1973                                                         offs=1;         // alter split
1974                                                 else if(pos_len_diag0==pos_len_diag1)           // do UV check instead
1975                                                 {
1976                                                         float tex_len_diag0, tex_len_diag1;
1977
1978                                                         sub_v2_v2v2(vtmp, tex_coords[2], tex_coords[0]);
1979                                                         tex_len_diag0 = dot_v2v2(vtmp, vtmp);
1980                                                         sub_v2_v2v2(vtmp, tex_coords[3], tex_coords[1]);
1981                                                         tex_len_diag1 = dot_v2v2(vtmp, vtmp);
1982
1983                                                         if(tex_len_diag1<tex_len_diag0)
1984                                                         {
1985                                                                 offs=1;         // alter split
1986                                                         }
1987                                                 }
1988                                         }
1989                                         nr_tris_to_pile = nr_verts-2 ;
1990                                         if ( nr_tris_to_pile==1 || nr_tris_to_pile==2 )
1991                                         {
1992                                                 const int indices[] = {offs+0, offs+1, offs+2, offs+0, offs+2, (offs+3)&0x3 };
1993                                                 int t;
1994                                                 for ( t=0; t<nr_tris_to_pile; t++ )
1995                                                 {
1996                                                         float f2x_area_uv;
1997                                                         float * p0 = verts[indices[t*3+0]];
1998                                                         float * p1 = verts[indices[t*3+1]];
1999                                                         float * p2 = verts[indices[t*3+2]];
2000
2001                                                         float edge_t0[2], edge_t1[2];
2002                                                         sub_v2_v2v2(edge_t0, tex_coords[indices[t*3+1]], tex_coords[indices[t*3+0]]);
2003                                                         sub_v2_v2v2(edge_t1, tex_coords[indices[t*3+2]], tex_coords[indices[t*3+0]]);
2004
2005                                                         f2x_area_uv = fabsf(edge_t0[0]*edge_t1[1] - edge_t0[1]*edge_t1[0]);
2006                                                         if ( f2x_area_uv>FLT_EPSILON )
2007                                                         {
2008                                                                 float norm[3], v0[3], v1[3], f2x_surf_area, fsurf_ratio;
2009                                                                 sub_v3_v3v3(v0, p1, p0);
2010                                                                 sub_v3_v3v3(v1, p2, p0);
2011                                                                 cross_v3_v3v3(norm, v0, v1);
2012
2013                                                                 f2x_surf_area = len_v3(norm);
2014                                                                 fsurf_ratio = f2x_surf_area/f2x_area_uv;        // tri area divided by texture area
2015
2016                                                                 ++nr_accumulated;
2017                                                                 dsum += (double)(fsurf_ratio);
2018                                                         }
2019                                                 }
2020                                         }
2021                                 }
2022                         }
2023                 }
2024
2025                 // finalize
2026                 {
2027                         const float avg_area_ratio = (nr_accumulated>0) ? ((float)(dsum / nr_accumulated)) : 1.0f;
2028                         const float use_as_render_bump_scale = sqrtf(avg_area_ratio);           // use width of average surface ratio as your bump scale
2029                         dm->auto_bump_scale = use_as_render_bump_scale;
2030                 }
2031         }
2032         else
2033         {
2034                 dm->auto_bump_scale = 1.0f;
2035         }
2036 }
2037
2038 void DM_vertex_attributes_from_gpu(DerivedMesh *dm, GPUVertexAttribs *gattribs, DMVertexAttribs *attribs)
2039 {
2040         CustomData *vdata, *fdata, *tfdata = NULL;
2041         int a, b, layer;
2042
2043         /* From the layers requested by the GLSL shader, figure out which ones are
2044          * actually available for this derivedmesh, and retrieve the pointers */
2045
2046         memset(attribs, 0, sizeof(DMVertexAttribs));
2047
2048         vdata = &dm->vertData;
2049         fdata = &dm->faceData;
2050
2051         /* ugly hack, editmesh derivedmesh doesn't copy face data, this way we
2052          * can use offsets instead */
2053         if(dm->type == DM_TYPE_EDITMESH)
2054                 tfdata = &((EditMeshDerivedMesh*)dm)->em->fdata;
2055         else
2056                 tfdata = fdata;
2057
2058         /* calc auto bump scale if necessary */
2059         if(dm->auto_bump_scale<=0.0f)
2060                 DM_calc_auto_bump_scale(dm);
2061
2062         /* add a tangent layer if necessary */
2063         for(b = 0; b < gattribs->totlayer; b++)
2064                 if(gattribs->layer[b].type == CD_TANGENT)
2065                         if(CustomData_get_layer_index(fdata, CD_TANGENT) == -1)
2066                                 DM_add_tangent_layer(dm);
2067
2068         for(b = 0; b < gattribs->totlayer; b++) {
2069                 if(gattribs->layer[b].type == CD_MTFACE) {
2070                         /* uv coordinates */
2071                         if(gattribs->layer[b].name[0])
2072                                 layer = CustomData_get_named_layer_index(tfdata, CD_MTFACE,
2073                                         gattribs->layer[b].name);
2074                         else
2075                                 layer = CustomData_get_active_layer_index(tfdata, CD_MTFACE);
2076
2077                         if(layer != -1) {
2078                                 a = attribs->tottface++;
2079
2080                                 attribs->tface[a].array = tfdata->layers[layer].data;
2081                                 attribs->tface[a].emOffset = tfdata->layers[layer].offset;
2082                                 attribs->tface[a].glIndex = gattribs->layer[b].glindex;
2083                                 attribs->tface[a].glTexco = gattribs->layer[b].gltexco;
2084                         }
2085                 }
2086                 else if(gattribs->layer[b].type == CD_MCOL) {
2087                         /* vertex colors */
2088                         if(gattribs->layer[b].name[0])
2089                                 layer = CustomData_get_named_layer_index(tfdata, CD_MCOL,
2090                                         gattribs->layer[b].name);
2091                         else
2092                                 layer = CustomData_get_active_layer_index(tfdata, CD_MCOL);
2093
2094                         if(layer != -1) {
2095                                 a = attribs->totmcol++;
2096
2097                                 attribs->mcol[a].array = tfdata->layers[layer].data;
2098                                 attribs->mcol[a].emOffset = tfdata->layers[layer].offset;
2099                                 attribs->mcol[a].glIndex = gattribs->layer[b].glindex;
2100                         }
2101                 }
2102                 else if(gattribs->layer[b].type == CD_TANGENT) {
2103                         /* tangents */
2104                         layer = CustomData_get_layer_index(fdata, CD_TANGENT);
2105
2106                         if(layer != -1) {
2107                                 attribs->tottang = 1;
2108
2109                                 attribs->tang.array = fdata->layers[layer].data;
2110                                 attribs->tang.emOffset = fdata->layers[layer].offset;
2111                                 attribs->tang.glIndex = gattribs->layer[b].glindex;
2112                         }
2113                 }
2114                 else if(gattribs->layer[b].type == CD_ORCO) {
2115                         /* original coordinates */
2116                         layer = CustomData_get_layer_index(vdata, CD_ORCO);
2117
2118                         if(layer != -1) {
2119                                 attribs->totorco = 1;
2120
2121                                 attribs->orco.array = vdata->layers[layer].data;
2122                                 attribs->orco.emOffset = vdata->layers[layer].offset;
2123                                 attribs->orco.glIndex = gattribs->layer[b].glindex;
2124                                 attribs->orco.glTexco = gattribs->layer[b].gltexco;
2125                         }
2126                 }
2127         }
2128 }
2129
2130 /* Set object's bounding box based on DerivedMesh min/max data */
2131 void DM_set_object_boundbox(Object *ob, DerivedMesh *dm)
2132 {
2133         float min[3], max[3];
2134
2135         INIT_MINMAX(min, max);
2136
2137         dm->getMinMax(dm, min, max);
2138
2139         if(!ob->bb)
2140                 ob->bb= MEM_callocN(sizeof(BoundBox), "DM-BoundBox");
2141
2142         boundbox_set_from_min_max(ob->bb, min, max);
2143 }
2144
2145 /* --- NAVMESH (begin) --- */
2146 #ifdef WITH_GAMEENGINE
2147
2148 BM_INLINE int navmesh_bit(int a, int b)
2149 {
2150         return (a & (1 << b)) >> b;
2151 }
2152
2153 BM_INLINE void navmesh_intToCol(int i, float col[3])
2154 {
2155         int     r = navmesh_bit(i, 0) + navmesh_bit(i, 3) * 2 + 1;
2156         int     g = navmesh_bit(i, 1) + navmesh_bit(i, 4) * 2 + 1;
2157         int     b = navmesh_bit(i, 2) + navmesh_bit(i, 5) * 2 + 1;
2158         col[0] = 1 - r*63.0f/255.0f;
2159         col[1] = 1 - g*63.0f/255.0f;
2160         col[2] = 1 - b*63.0f/255.0f;
2161 }
2162
2163 static void navmesh_drawColored(DerivedMesh *dm)
2164 {
2165         int a, glmode;
2166         MVert *mvert = (MVert *)CustomData_get_layer(&dm->vertData, CD_MVERT);
2167         MFace *mface = (MFace *)CustomData_get_layer(&dm->faceData, CD_MFACE);
2168         int *polygonIdx = (int *)CustomData_get_layer(&dm->faceData, CD_RECAST);
2169         float col[3];
2170
2171         if (!polygonIdx)
2172                 return;
2173
2174         /*
2175         //UI_ThemeColor(TH_WIRE);
2176         glDisable(GL_LIGHTING);
2177         glLineWidth(2.0);
2178         dm->drawEdges(dm, 0, 1);
2179         glLineWidth(1.0);
2180         glEnable(GL_LIGHTING);*/
2181
2182         glDisable(GL_LIGHTING);
2183         /*  if(GPU_buffer_legacy(dm) ) */ { /* TODO - VBO draw code, not high priority - campbell */
2184                 DEBUG_VBO( "Using legacy code. drawNavMeshColored\n" );
2185                 //glShadeModel(GL_SMOOTH);
2186                 glBegin(glmode = GL_QUADS);
2187                 for(a = 0; a < dm->numFaceData; a++, mface++) {
2188                         int new_glmode = mface->v4?GL_QUADS:GL_TRIANGLES;
2189                         int pi = polygonIdx[a];
2190                         if (pi <= 0) {
2191                                 zero_v3(col);
2192                         }
2193                         else {
2194                                 navmesh_intToCol(pi, col);
2195                         }
2196
2197                         if(new_glmode != glmode) {
2198                                 glEnd();
2199                                 glBegin(glmode = new_glmode);
2200                         }
2201                         glColor3fv(col);
2202                         glVertex3fv(mvert[mface->v1].co);
2203                         glVertex3fv(mvert[mface->v2].co);
2204                         glVertex3fv(mvert[mface->v3].co);
2205                         if(mface->v4) {
2206                                 glVertex3fv(mvert[mface->v4].co);
2207                         }
2208                 }
2209                 glEnd();
2210         }
2211         glEnable(GL_LIGHTING);
2212 }
2213
2214 static void navmesh_DM_drawFacesTex(DerivedMesh *dm,
2215                         int (*setDrawOptions)(MTFace *tface, int has_mcol, int matnr),
2216                         int (*compareDrawOptions)(void *userData, int cur_index, int next_index),
2217                         void *userData)
2218 {
2219         (void) setDrawOptions;
2220         (void) compareDrawOptions;
2221         (void) userData;
2222
2223         navmesh_drawColored(dm);
2224 }
2225
2226 static void navmesh_DM_drawFacesSolid(DerivedMesh *dm,
2227                                       float (*partial_redraw_planes)[4],
2228                                       int UNUSED(fast), int (*setMaterial)(int, void *attribs))
2229 {
2230         (void) partial_redraw_planes;
2231         (void) setMaterial;
2232
2233         //drawFacesSolid_original(dm, partial_redraw_planes, fast, setMaterial);
2234         navmesh_drawColored(dm);
2235 }
2236
2237 static DerivedMesh *navmesh_dm_createNavMeshForVisualization(DerivedMesh *dm)
2238 {
2239         DerivedMesh *result;
2240         int maxFaces = dm->getNumFaces(dm);
2241         int *recastData;
2242         int vertsPerPoly=0, nverts=0, ndtris=0, npolys=0;
2243         float* verts=NULL;
2244         unsigned short *dtris=NULL, *dmeshes=NULL, *polys=NULL;
2245         int *dtrisToPolysMap=NULL, *dtrisToTrisMap=NULL, *trisToFacesMap=NULL;
2246         int res;
2247
2248         result = CDDM_copy(dm);
2249         if (!CustomData_has_layer(&result->faceData, CD_RECAST)) {
2250                 int *sourceRecastData = (int*)CustomData_get_layer(&dm->faceData, CD_RECAST);
2251                 if (sourceRecastData) {
2252                         CustomData_add_layer_named(&result->faceData, CD_RECAST, CD_DUPLICATE,
2253                                                    sourceRecastData, maxFaces, "recastData");
2254                 }
2255         }
2256         recastData = (int*)CustomData_get_layer(&result->faceData, CD_RECAST);
2257
2258         /* note: This is not good design! - really should not be doing this */
2259         result->drawFacesTex =  navmesh_DM_drawFacesTex;
2260         result->drawFacesSolid = navmesh_DM_drawFacesSolid;
2261
2262
2263         /* process mesh */
2264         res  = buildNavMeshDataByDerivedMesh(dm, &vertsPerPoly, &nverts, &verts, &ndtris, &dtris,
2265                                              &npolys, &dmeshes, &polys, &dtrisToPolysMap, &dtrisToTrisMap,
2266                                              &trisToFacesMap);
2267         if (res) {
2268                 size_t polyIdx;
2269
2270                 /* invalidate concave polygon */
2271                 for (polyIdx=0; polyIdx<(size_t)npolys; polyIdx++) {
2272                         unsigned short* poly = &polys[polyIdx*2*vertsPerPoly];
2273                         if (!polyIsConvex(poly, vertsPerPoly, verts)) {
2274                                 /* set negative polygon idx to all faces */
2275                                 unsigned short *dmesh = &dmeshes[4*polyIdx];
2276                                 unsigned short tbase = dmesh[2];
2277                                 unsigned short tnum = dmesh[3];
2278                                 unsigned short ti;
2279
2280                                 for (ti=0; ti<tnum; ti++) {
2281                                         unsigned short triidx = dtrisToTrisMap[tbase+ti];
2282                                         unsigned short faceidx = trisToFacesMap[triidx];
2283                                         if (recastData[faceidx] > 0) {
2284                                                 recastData[faceidx] = -recastData[faceidx];
2285                                         }
2286                                 }
2287                         }
2288                 }
2289         }
2290         else {
2291                 printf("Error during creation polygon infos\n");
2292         }
2293
2294         /* clean up */
2295         if (verts!=NULL)
2296                 MEM_freeN(verts);
2297         if (dtris!=NULL)
2298                 MEM_freeN(dtris);
2299         if (dmeshes!=NULL)
2300                 MEM_freeN(dmeshes);
2301         if (polys!=NULL)
2302                 MEM_freeN(polys);
2303         if (dtrisToPolysMap!=NULL)
2304                 MEM_freeN(dtrisToPolysMap);
2305         if (dtrisToTrisMap!=NULL)
2306                 MEM_freeN(dtrisToTrisMap);
2307         if (trisToFacesMap!=NULL)
2308                 MEM_freeN(trisToFacesMap);
2309
2310         return result;
2311 }
2312
2313 #endif /* WITH_GAMEENGINE */
2314
2315 /* --- NAVMESH (end) --- */
2316
2317
2318 /* derivedmesh info printing function,
2319  * to help track down differences DM output */
2320
2321 #ifndef NDEBUG
2322 #include "BLI_dynstr.h"
2323
2324 static void dm_debug_info_layers(DynStr *dynstr, DerivedMesh *dm, void *(*getElemDataArray)(DerivedMesh *, int))
2325 {
2326         int type;
2327
2328         for (type = 0; type < CD_NUMTYPES; type++) {
2329                 /* note: doesnt account for multiple layers */
2330                 void *pt = getElemDataArray(dm, type);
2331                 if (pt) {
2332                         const char *name = CustomData_layertype_name(type);
2333                         const int size = CustomData_sizeof(type);
2334                         const char *structname;
2335                         int structnum;
2336                         CustomData_file_write_info(type, &structname, &structnum);
2337                         BLI_dynstr_appendf(dynstr,
2338                                            "        dict(name='%s', struct='%s', type=%d, ptr='%p', elem=%d, length=%d),\n",
2339                                                            name, structname, type, (void *)pt, size, (int)(MEM_allocN_len(pt) / size));
2340                 }
2341         }
2342 }
2343
2344 char *DM_debug_info(DerivedMesh *dm)
2345 {
2346         DynStr *dynstr= BLI_dynstr_new();
2347         char *ret;
2348         const char *tstr;
2349
2350         BLI_dynstr_appendf(dynstr, "{\n");
2351         BLI_dynstr_appendf(dynstr, "    'ptr': '%p',\n", (void *)dm);
2352         switch (dm->type) {
2353                 case DM_TYPE_CDDM:     tstr = "DM_TYPE_CDDM";     break;
2354                 case DM_TYPE_EDITMESH: tstr = "DM_TYPE_EDITMESH";  break;
2355                 case DM_TYPE_CCGDM:    tstr = "DM_TYPE_CCGDM";     break;
2356                 default:               tstr = "UNKNOWN";           break;
2357         }
2358         BLI_dynstr_appendf(dynstr, "    'type': '%s',\n", tstr);
2359         BLI_dynstr_appendf(dynstr, "    'numVertData': %d,\n", dm->numVertData);
2360         BLI_dynstr_appendf(dynstr, "    'numEdgeData': %d,\n", dm->numEdgeData);
2361         BLI_dynstr_appendf(dynstr, "    'numFaceData': %d,\n", dm->numFaceData);
2362         BLI_dynstr_appendf(dynstr, "    'deformedOnly': %d,\n", dm->deformedOnly);
2363
2364         BLI_dynstr_appendf(dynstr, "    'vertexLayers': (\n");
2365         dm_debug_info_layers(dynstr, dm, dm->getVertDataArray);
2366         BLI_dynstr_appendf(dynstr, "    ),\n");
2367
2368         BLI_dynstr_appendf(dynstr, "    'edgeLayers': (\n");
2369         dm_debug_info_layers(dynstr, dm, dm->getEdgeDataArray);
2370         BLI_dynstr_appendf(dynstr, "    ),\n");
2371
2372         BLI_dynstr_appendf(dynstr, "    'faceLayers': (\n");
2373         dm_debug_info_layers(dynstr, dm, dm->getFaceDataArray);
2374         BLI_dynstr_appendf(dynstr, "    ),\n");
2375
2376         BLI_dynstr_appendf(dynstr, "}\n");
2377
2378         ret = BLI_dynstr_get_cstring(dynstr);
2379         BLI_dynstr_free(dynstr);
2380         return ret;
2381 }
2382
2383 void DM_debug_print(DerivedMesh *dm)
2384 {
2385         char *str = DM_debug_info(dm);
2386         printf(str);
2387         fflush(stdout);
2388 }
2389
2390 #endif /* NDEBUG */