svn merge ^/trunk/blender -r43611:43616
[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 #include "limits.h"
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_array.h"
50 #include "BLI_pbvh.h"
51 #include "BLI_utildefines.h"
52 #include "BLI_linklist.h"
53
54 #include "BKE_cdderivedmesh.h"
55 #include "BKE_displist.h"
56 #include "BKE_key.h"
57 #include "BKE_modifier.h"
58 #include "BKE_mesh.h"
59 #include "BKE_object.h"
60 #include "BKE_paint.h"
61 #include "BKE_texture.h"
62 #include "BKE_multires.h"
63 #include "BKE_armature.h"
64 #include "BKE_particle.h"
65 #include "BKE_tessmesh.h"
66 #include "BKE_bvhutils.h"
67 #include "BKE_deform.h"
68
69 #ifdef WITH_GAMEENGINE
70 #include "BKE_navmesh_conversion.h"
71 static DerivedMesh *navmesh_dm_createNavMeshForVisualization(DerivedMesh *dm);
72 #endif
73
74 #include "BLO_sys_types.h" // for intptr_t support
75
76 #include "GL/glew.h"
77
78 #include "GPU_buffers.h"
79 #include "GPU_draw.h"
80 #include "GPU_extensions.h"
81 #include "GPU_material.h"
82
83 extern GLubyte stipple_quarttone[128]; /* glutil.c, bad level data */
84
85 static void add_shapekey_layers(DerivedMesh *dm, Mesh *me, Object *ob);
86 static void shapekey_layers_to_keyblocks(DerivedMesh *dm, Mesh *me, int actshape_uid);
87
88 ///////////////////////////////////
89 ///////////////////////////////////
90
91 static MVert *dm_getVertArray(DerivedMesh *dm)
92 {
93         MVert *mvert = CustomData_get_layer(&dm->vertData, CD_MVERT);
94
95         if (!mvert) {
96                 mvert = CustomData_add_layer(&dm->vertData, CD_MVERT, CD_CALLOC, NULL,
97                         dm->getNumVerts(dm));
98                 CustomData_set_layer_flag(&dm->vertData, CD_MVERT, CD_FLAG_TEMPORARY);
99                 dm->copyVertArray(dm, mvert);
100         }
101
102         return mvert;
103 }
104
105 static MEdge *dm_getEdgeArray(DerivedMesh *dm)
106 {
107         MEdge *medge = CustomData_get_layer(&dm->edgeData, CD_MEDGE);
108
109         if (!medge) {
110                 medge = CustomData_add_layer(&dm->edgeData, CD_MEDGE, CD_CALLOC, NULL,
111                         dm->getNumEdges(dm));
112                 CustomData_set_layer_flag(&dm->edgeData, CD_MEDGE, CD_FLAG_TEMPORARY);
113                 dm->copyEdgeArray(dm, medge);
114         }
115
116         return medge;
117 }
118
119 static MFace *dm_getTessFaceArray(DerivedMesh *dm)
120 {
121         MFace *mface = CustomData_get_layer(&dm->faceData, CD_MFACE);
122
123         if (!mface) {
124                 mface = CustomData_add_layer(&dm->faceData, CD_MFACE, CD_CALLOC, NULL,
125                         dm->getNumTessFaces(dm));
126                 CustomData_set_layer_flag(&dm->faceData, CD_MFACE, CD_FLAG_TEMPORARY);
127                 dm->copyTessFaceArray(dm, mface);
128         }
129
130         return mface;
131 }
132
133 static MLoop *dm_getLoopArray(DerivedMesh *dm)
134 {
135         MLoop *mloop = CustomData_get_layer(&dm->loopData, CD_MLOOP);
136
137         if (!mloop) {
138                 mloop = CustomData_add_layer(&dm->loopData, CD_MLOOP, CD_CALLOC, NULL,
139                         dm->getNumLoops(dm));
140                 CustomData_set_layer_flag(&dm->loopData, CD_MLOOP, CD_FLAG_TEMPORARY);
141                 dm->copyLoopArray(dm, mloop);
142         }
143
144         return mloop;
145 }
146
147 static MPoly *dm_getPolyArray(DerivedMesh *dm)
148 {
149         MPoly *mpoly = CustomData_get_layer(&dm->polyData, CD_MPOLY);
150
151         if (!mpoly) {
152                 mpoly = CustomData_add_layer(&dm->polyData, CD_MPOLY, CD_CALLOC, NULL,
153                         dm->getNumPolys(dm));
154                 CustomData_set_layer_flag(&dm->polyData, CD_MPOLY, CD_FLAG_TEMPORARY);
155                 dm->copyPolyArray(dm, mpoly);
156         }
157
158         return mpoly;
159 }
160
161 static MVert *dm_dupVertArray(DerivedMesh *dm)
162 {
163         MVert *tmp = MEM_callocN(sizeof(*tmp) * dm->getNumVerts(dm),
164                                                          "dm_dupVertArray tmp");
165
166         if(tmp) dm->copyVertArray(dm, tmp);
167
168         return tmp;
169 }
170
171 static MEdge *dm_dupEdgeArray(DerivedMesh *dm)
172 {
173         MEdge *tmp = MEM_callocN(sizeof(*tmp) * dm->getNumEdges(dm),
174                                                          "dm_dupEdgeArray tmp");
175
176         if(tmp) dm->copyEdgeArray(dm, tmp);
177
178         return tmp;
179 }
180
181 static MFace *dm_dupFaceArray(DerivedMesh *dm)
182 {
183         MFace *tmp = MEM_callocN(sizeof(*tmp) * dm->getNumTessFaces(dm),
184                                                          "dm_dupFaceArray tmp");
185
186         if(tmp) dm->copyTessFaceArray(dm, tmp);
187
188         return tmp;
189 }
190
191 static MLoop *dm_dupLoopArray(DerivedMesh *dm)
192 {
193         MLoop *tmp = MEM_callocN(sizeof(*tmp) * dm->getNumLoops(dm),
194                                                          "dm_dupLoopArray tmp");
195
196         if(tmp) dm->copyLoopArray(dm, tmp);
197
198         return tmp;
199 }
200
201 static MPoly *dm_dupPolyArray(DerivedMesh *dm)
202 {
203         MPoly *tmp = MEM_callocN(sizeof(*tmp) * dm->getNumPolys(dm),
204                                                          "dm_dupPolyArray tmp");
205
206         if(tmp) dm->copyPolyArray(dm, tmp);
207
208         return tmp;
209 }
210
211 static CustomData *dm_getVertCData(DerivedMesh *dm)
212 {
213         return &dm->vertData;
214 }
215
216 static CustomData *dm_getEdgeCData(DerivedMesh *dm)
217 {
218         return &dm->edgeData;
219 }
220
221 static CustomData *dm_getTessFaceCData(DerivedMesh *dm)
222 {
223         return &dm->faceData;
224 }
225
226 static CustomData *dm_getLoopCData(DerivedMesh *dm)
227 {
228         return &dm->loopData;
229 }
230
231 static CustomData *dm_getPolyCData(DerivedMesh *dm)
232 {
233         return &dm->polyData;
234 }
235
236 void DM_init_funcs(DerivedMesh *dm)
237 {
238         /* default function implementations */
239         dm->getVertArray = dm_getVertArray;
240         dm->getEdgeArray = dm_getEdgeArray;
241         dm->getTessFaceArray = dm_getTessFaceArray;
242         dm->getLoopArray = dm_getLoopArray;
243         dm->getPolyArray = dm_getPolyArray;
244         dm->dupVertArray = dm_dupVertArray;
245         dm->dupEdgeArray = dm_dupEdgeArray;
246         dm->dupTessFaceArray = dm_dupFaceArray;
247         dm->dupLoopArray = dm_dupLoopArray;
248         dm->dupPolyArray = dm_dupPolyArray;
249
250         dm->getVertDataLayout = dm_getVertCData;
251         dm->getEdgeDataLayout = dm_getEdgeCData;
252         dm->getTessFaceDataLayout = dm_getTessFaceCData;
253         dm->getLoopDataLayout = dm_getLoopCData;
254         dm->getPolyDataLayout = dm_getPolyCData;
255
256         dm->getVertData = DM_get_vert_data;
257         dm->getEdgeData = DM_get_edge_data;
258         dm->getTessFaceData = DM_get_tessface_data;
259         dm->getVertDataArray = DM_get_vert_data_layer;
260         dm->getEdgeDataArray = DM_get_edge_data_layer;
261         dm->getTessFaceDataArray = DM_get_tessface_data_layer;
262
263         bvhcache_init(&dm->bvhCache);
264 }
265
266 void DM_init(DerivedMesh *dm, DerivedMeshType type, int numVerts, int numEdges,
267              int numTessFaces, int numLoops, int numPolys)
268 {
269         dm->type = type;
270         dm->numVertData = numVerts;
271         dm->numEdgeData = numEdges;
272         dm->numTessFaceData = numTessFaces;
273         dm->numLoopData = numLoops;
274         dm->numPolyData = numPolys;
275
276         DM_init_funcs(dm);
277         
278         dm->needsFree = 1;
279         dm->auto_bump_scale = -1.0f;
280 }
281
282 void DM_from_template(DerivedMesh *dm, DerivedMesh *source, DerivedMeshType type,
283                       int numVerts, int numEdges, int numTessFaces,
284                       int numLoops, int numPolys)
285 {
286         CustomData_copy(&source->vertData, &dm->vertData, CD_MASK_DERIVEDMESH,
287                                         CD_CALLOC, numVerts);
288         CustomData_copy(&source->edgeData, &dm->edgeData, CD_MASK_DERIVEDMESH,
289                                         CD_CALLOC, numEdges);
290         CustomData_copy(&source->faceData, &dm->faceData, CD_MASK_DERIVEDMESH,
291                                         CD_CALLOC, numTessFaces);
292         CustomData_copy(&source->loopData, &dm->loopData, CD_MASK_DERIVEDMESH,
293                         CD_CALLOC, numLoops);
294         CustomData_copy(&source->polyData, &dm->polyData, CD_MASK_DERIVEDMESH,
295                         CD_CALLOC, numPolys);
296
297         dm->type = type;
298         dm->numVertData = numVerts;
299         dm->numEdgeData = numEdges;
300         dm->numTessFaceData = numTessFaces;
301         dm->numLoopData = numLoops;
302         dm->numPolyData = numPolys;
303
304         DM_init_funcs(dm);
305
306         dm->needsFree = 1;
307 }
308
309 int DM_release(DerivedMesh *dm)
310 {
311         if (dm->needsFree) {
312                 bvhcache_free(&dm->bvhCache);
313                 GPU_drawobject_free( dm );
314                 CustomData_free(&dm->vertData, dm->numVertData);
315                 CustomData_free(&dm->edgeData, dm->numEdgeData);
316                 CustomData_free(&dm->faceData, dm->numTessFaceData);
317                 CustomData_free(&dm->loopData, dm->numLoopData);
318                 CustomData_free(&dm->polyData, dm->numPolyData);
319
320                 return 1;
321         }
322         else {
323                 CustomData_free_temporary(&dm->vertData, dm->numVertData);
324                 CustomData_free_temporary(&dm->edgeData, dm->numEdgeData);
325                 CustomData_free_temporary(&dm->faceData, dm->numTessFaceData);
326                 CustomData_free_temporary(&dm->loopData, dm->numLoopData);
327                 CustomData_free_temporary(&dm->polyData, dm->numPolyData);
328
329                 return 0;
330         }
331 }
332
333 void DM_DupPolys(DerivedMesh *source, DerivedMesh *target)
334 {
335         CustomData_free(&target->loopData, source->numLoopData);
336         CustomData_free(&target->polyData, source->numPolyData);
337
338         CustomData_copy(&source->loopData, &target->loopData, CD_MASK_DERIVEDMESH, CD_DUPLICATE, source->numLoopData);
339         CustomData_copy(&source->polyData, &target->polyData, CD_MASK_DERIVEDMESH, CD_DUPLICATE, source->numPolyData);
340
341         target->numLoopData = source->numLoopData;
342         target->numPolyData = source->numPolyData;
343
344         if (!CustomData_has_layer(&target->polyData, CD_MPOLY)) {
345                 MPoly *mpoly;
346                 MLoop *mloop;
347
348                 mloop = source->dupLoopArray(source);
349                 mpoly = source->dupPolyArray(source);
350                 CustomData_add_layer(&target->loopData, CD_MLOOP, CD_ASSIGN, mloop, source->numLoopData);
351                 CustomData_add_layer(&target->polyData, CD_MPOLY, CD_ASSIGN, mpoly, source->numPolyData);
352         }
353 }
354
355 /* note: until all modifiers can take MPoly's as input,
356  * use this at the start of modifiers  */
357 void DM_ensure_tessface(DerivedMesh *dm)
358 {
359         const int numTessFaces = dm->getNumTessFaces(dm);
360         const int numPolys =     dm->getNumPolys(dm);
361
362         if ( (numTessFaces == 0) && (numPolys != 0)) {
363                 dm->recalcTesselation(dm);
364
365                 if (dm->getNumTessFaces(dm) != 0) {
366                         /* printf("info %s: polys -> ngons calculated\n", __func__); */
367                 }
368                 else {
369                         printf("warning %s: could not create tessfaces from %d polygons, dm->type=%d\n",
370                                __func__, numPolys, dm->type);
371                 }
372         }
373 }
374
375 void DM_to_mesh(DerivedMesh *dm, Mesh *me, Object *ob)
376 {
377         /* dm might depend on me, so we need to do everything with a local copy */
378         Mesh tmp = *me;
379         int totvert, totedge /*, totface */ /* UNUSED */, totloop, totpoly;
380         int did_shapekeys=0;
381         
382         memset(&tmp.vdata, 0, sizeof(tmp.vdata));
383         memset(&tmp.edata, 0, sizeof(tmp.edata));
384         memset(&tmp.fdata, 0, sizeof(tmp.fdata));
385         memset(&tmp.ldata, 0, sizeof(tmp.ldata));
386         memset(&tmp.pdata, 0, sizeof(tmp.pdata));
387
388         totvert = tmp.totvert = dm->getNumVerts(dm);
389         totedge = tmp.totedge = dm->getNumEdges(dm);
390         totloop = tmp.totloop = dm->getNumLoops(dm);
391         totpoly = tmp.totpoly = dm->getNumPolys(dm);
392
393         CustomData_copy(&dm->vertData, &tmp.vdata, CD_MASK_MESH, CD_DUPLICATE, totvert);
394         CustomData_copy(&dm->edgeData, &tmp.edata, CD_MASK_MESH, CD_DUPLICATE, totedge);
395         CustomData_copy(&dm->loopData, &tmp.ldata, CD_MASK_MESH, CD_DUPLICATE, totloop);
396         CustomData_copy(&dm->polyData, &tmp.pdata, CD_MASK_MESH, CD_DUPLICATE, totpoly);
397
398         if (CustomData_has_layer(&dm->vertData, CD_SHAPEKEY)) {
399                 KeyBlock *kb;
400                 int i=0;
401                 
402                 if (ob) {
403                         for (kb=me->key->block.first; kb; kb=kb->next, i++) {
404                                 if (i == ob->shapenr-1) {
405                                         i = kb->uid;
406                                         break;
407                                 }
408                         }
409                         
410                         if (!kb) {
411                                 printf("%s: error - could not find active shapekey %d!\n",
412                                        __func__, ob->shapenr-1);
413
414                                 i = INT_MAX;
415                         }
416                 } else {
417                         /*if no object, set to INT_MAX so we don't mess up any shapekey layers*/
418                         i = INT_MAX;
419                 }
420                 
421                 shapekey_layers_to_keyblocks(dm, me, i);
422                 did_shapekeys = 1;
423         }
424         
425         /* not all DerivedMeshes store their verts/edges/faces in CustomData, so
426            we set them here in case they are missing */
427         if(!CustomData_has_layer(&tmp.vdata, CD_MVERT))
428                 CustomData_add_layer(&tmp.vdata, CD_MVERT, CD_ASSIGN, dm->dupVertArray(dm), totvert);
429         if(!CustomData_has_layer(&tmp.edata, CD_MEDGE))
430                 CustomData_add_layer(&tmp.edata, CD_MEDGE, CD_ASSIGN, dm->dupEdgeArray(dm), totedge);
431         if(!CustomData_has_layer(&tmp.pdata, CD_MPOLY)) {
432                 tmp.mloop = dm->dupLoopArray(dm);
433                 tmp.mpoly = dm->dupPolyArray(dm);
434
435                 CustomData_add_layer(&tmp.ldata, CD_MLOOP, CD_ASSIGN, tmp.mloop, tmp.totloop);
436                 CustomData_add_layer(&tmp.pdata, CD_MPOLY, CD_ASSIGN, tmp.mpoly, tmp.totpoly);
437         }
438
439         /* object had got displacement layer, should copy this layer to save sculpted data */
440         /* NOTE: maybe some other layers should be copied? nazgul */
441         if(CustomData_has_layer(&me->ldata, CD_MDISPS)) {
442                 if (totloop == me->totloop) {
443                         MDisps *mdisps = CustomData_get_layer(&me->ldata, CD_MDISPS);
444                         CustomData_add_layer(&tmp.ldata, CD_MDISPS, CD_DUPLICATE, mdisps, totloop);
445                 }
446         }
447
448         /* yes, must be before _and_ after tesselate */
449         mesh_update_customdata_pointers(&tmp, TRUE);
450
451         tmp.totface = mesh_recalcTesselation(&tmp.fdata, &tmp.ldata, &tmp.pdata,
452                                              tmp.mvert,
453                                              tmp.totface, tmp.totloop, tmp.totpoly,
454                                              TRUE);
455
456         mesh_update_customdata_pointers(&tmp, TRUE);
457
458
459         CustomData_free(&me->vdata, me->totvert);
460         CustomData_free(&me->edata, me->totedge);
461         CustomData_free(&me->fdata, me->totface);
462         CustomData_free(&me->ldata, me->totloop);
463         CustomData_free(&me->pdata, me->totpoly);
464
465         /*  ok, this should now use new CD shapekey data,
466             which shouuld be fed through the modifier 
467                 stack*/
468         if(tmp.totvert != me->totvert && !did_shapekeys && me->key) {
469                 printf("YEEK! this should be recoded! Shape key loss!!!\n");
470                 if(tmp.key) tmp.key->id.us--;
471                 tmp.key = NULL;
472         }
473
474         *me = tmp;
475 }
476
477 void DM_to_meshkey(DerivedMesh *dm, Mesh *me, KeyBlock *kb)
478 {
479         int a, totvert = dm->getNumVerts(dm);
480         float *fp;
481         MVert *mvert;
482         
483         if(totvert==0 || me->totvert==0 || me->totvert!=totvert) return;
484         
485         if(kb->data) MEM_freeN(kb->data);
486         kb->data= MEM_callocN(me->key->elemsize*me->totvert, "kb->data");
487         kb->totelem= totvert;
488         
489         fp= kb->data;
490         mvert=dm->getVertDataArray(dm, CD_MVERT);
491         
492         for(a=0; a<kb->totelem; a++, fp+=3, mvert++) {
493                 copy_v3_v3(fp, mvert->co);
494         }
495 }
496
497 void DM_set_only_copy(DerivedMesh *dm, CustomDataMask mask)
498 {
499         CustomData_set_only_copy(&dm->vertData, mask);
500         CustomData_set_only_copy(&dm->edgeData, mask);
501         CustomData_set_only_copy(&dm->faceData, mask);
502 }
503
504 void DM_add_vert_layer(DerivedMesh *dm, int type, int alloctype, void *layer)
505 {
506         CustomData_add_layer(&dm->vertData, type, alloctype, layer, dm->numVertData);
507 }
508
509 void DM_add_edge_layer(DerivedMesh *dm, int type, int alloctype, void *layer)
510 {
511         CustomData_add_layer(&dm->edgeData, type, alloctype, layer, dm->numEdgeData);
512 }
513
514 void DM_add_tessface_layer(DerivedMesh *dm, int type, int alloctype, void *layer)
515 {
516         CustomData_add_layer(&dm->faceData, type, alloctype, layer, dm->numTessFaceData);
517 }
518
519 void DM_add_loop_layer(DerivedMesh *dm, int type, int alloctype, void *layer)
520 {
521         CustomData_add_layer(&dm->loopData, type, alloctype, layer, dm->numLoopData);
522 }
523
524 void DM_add_poly_layer(DerivedMesh *dm, int type, int alloctype, void *layer)
525 {
526         CustomData_add_layer(&dm->polyData, type, alloctype, layer, dm->numPolyData);
527 }
528
529 void *DM_get_vert_data(DerivedMesh *dm, int index, int type)
530 {
531         return CustomData_get(&dm->vertData, index, type);
532 }
533
534 void *DM_get_edge_data(DerivedMesh *dm, int index, int type)
535 {
536         return CustomData_get(&dm->edgeData, index, type);
537 }
538
539 void *DM_get_tessface_data(DerivedMesh *dm, int index, int type)
540 {
541         return CustomData_get(&dm->faceData, index, type);
542 }
543
544 void *DM_get_vert_data_layer(DerivedMesh *dm, int type)
545 {
546         if(type == CD_MVERT)
547                 return dm->getVertArray(dm);
548
549         return CustomData_get_layer(&dm->vertData, type);
550 }
551
552 void *DM_get_edge_data_layer(DerivedMesh *dm, int type)
553 {
554         if(type == CD_MEDGE)
555                 return dm->getEdgeArray(dm);
556
557         return CustomData_get_layer(&dm->edgeData, type);
558 }
559
560 void *DM_get_tessface_data_layer(DerivedMesh *dm, int type)
561 {
562         if (type == CD_MFACE)
563                 return dm->getTessFaceArray(dm);
564
565         return CustomData_get_layer(&dm->faceData, type);
566 }
567
568 void *DM_get_poly_data_layer(DerivedMesh *dm, int type)
569 {
570         return CustomData_get_layer(&dm->polyData, type);
571 }
572
573 void DM_set_vert_data(DerivedMesh *dm, int index, int type, void *data)
574 {
575         CustomData_set(&dm->vertData, index, type, data);
576 }
577
578 void DM_set_edge_data(DerivedMesh *dm, int index, int type, void *data)
579 {
580         CustomData_set(&dm->edgeData, index, type, data);
581 }
582
583 void DM_set_tessface_data(DerivedMesh *dm, int index, int type, void *data)
584 {
585         CustomData_set(&dm->faceData, index, type, data);
586 }
587
588 void DM_copy_vert_data(DerivedMesh *source, DerivedMesh *dest,
589                                            int source_index, int dest_index, int count)
590 {
591         CustomData_copy_data(&source->vertData, &dest->vertData,
592                                                  source_index, dest_index, count);
593 }
594
595 void DM_copy_edge_data(DerivedMesh *source, DerivedMesh *dest,
596                                            int source_index, int dest_index, int count)
597 {
598         CustomData_copy_data(&source->edgeData, &dest->edgeData,
599                                                  source_index, dest_index, count);
600 }
601
602 void DM_copy_tessface_data(DerivedMesh *source, DerivedMesh *dest,
603                                            int source_index, int dest_index, int count)
604 {
605         CustomData_copy_data(&source->faceData, &dest->faceData,
606                                                  source_index, dest_index, count);
607 }
608
609 void DM_copy_loop_data(DerivedMesh *source, DerivedMesh *dest,
610                        int source_index, int dest_index, int count)
611 {
612         CustomData_copy_data(&source->loopData, &dest->loopData,
613                              source_index, dest_index, count);
614 }
615
616 void DM_copy_poly_data(DerivedMesh *source, DerivedMesh *dest,
617                        int source_index, int dest_index, int count)
618 {
619         CustomData_copy_data(&source->polyData, &dest->polyData,
620                              source_index, dest_index, count);
621 }
622
623 void DM_free_vert_data(struct DerivedMesh *dm, int index, int count)
624 {
625         CustomData_free_elem(&dm->vertData, index, count);
626 }
627
628 void DM_free_edge_data(struct DerivedMesh *dm, int index, int count)
629 {
630         CustomData_free_elem(&dm->edgeData, index, count);
631 }
632
633 void DM_free_tessface_data(struct DerivedMesh *dm, int index, int count)
634 {
635         CustomData_free_elem(&dm->faceData, index, count);
636 }
637
638 void DM_free_loop_data(struct DerivedMesh *dm, int index, int count)
639 {
640         CustomData_free_elem(&dm->loopData, index, count);
641 }
642
643 void DM_free_poly_data(struct DerivedMesh *dm, int index, int count)
644 {
645         CustomData_free_elem(&dm->polyData, index, count);
646 }
647
648 void DM_interp_vert_data(DerivedMesh *source, DerivedMesh *dest,
649                                                  int *src_indices, float *weights,
650                                                  int count, int dest_index)
651 {
652         CustomData_interp(&source->vertData, &dest->vertData, src_indices,
653                                           weights, NULL, count, dest_index);
654 }
655
656 void DM_interp_edge_data(DerivedMesh *source, DerivedMesh *dest,
657                                                  int *src_indices,
658                                                  float *weights, EdgeVertWeight *vert_weights,
659                                                  int count, int dest_index)
660 {
661         CustomData_interp(&source->edgeData, &dest->edgeData, src_indices,
662                                           weights, (float*)vert_weights, count, dest_index);
663 }
664
665 void DM_interp_tessface_data(DerivedMesh *source, DerivedMesh *dest,
666                                                  int *src_indices,
667                                                  float *weights, FaceVertWeight *vert_weights,
668                                                  int count, int dest_index)
669 {
670         CustomData_interp(&source->faceData, &dest->faceData, src_indices,
671                                           weights, (float*)vert_weights, count, dest_index);
672 }
673
674 void DM_swap_tessface_data(DerivedMesh *dm, int index, const int *corner_indices)
675 {
676         CustomData_swap(&dm->faceData, index, corner_indices);
677 }
678
679 void DM_interp_loop_data(DerivedMesh *source, DerivedMesh *dest,
680                          int *src_indices,
681                          float *weights, int count, int dest_index)
682 {
683         CustomData_interp(&source->loopData, &dest->loopData, src_indices,
684                           weights, NULL, count, dest_index);
685 }
686
687 void DM_interp_poly_data(DerivedMesh *source, DerivedMesh *dest,
688                          int *src_indices,
689                          float *weights, int count, int dest_index)
690 {
691         CustomData_interp(&source->polyData, &dest->polyData, src_indices,
692                           weights, NULL, count, dest_index);
693 }
694
695 ///
696 DerivedMesh *mesh_create_derived(Mesh *me, Object *ob, float (*vertCos)[3])
697 {
698         DerivedMesh *dm = CDDM_from_mesh(me, ob);
699         
700         if(!dm)
701                 return NULL;
702         
703         if (vertCos)
704                 CDDM_apply_vert_coords(dm, vertCos);
705
706         CDDM_calc_normals(dm);
707
708         return dm;
709 }
710
711 /***/
712
713 DerivedMesh *mesh_create_derived_for_modifier(Scene *scene, Object *ob, 
714         ModifierData *md, int build_shapekey_layers)
715 {
716         Mesh *me = ob->data;
717         ModifierTypeInfo *mti = modifierType_getInfo(md->type);
718         DerivedMesh *dm;
719
720         md->scene= scene;
721         
722         if (!(md->mode&eModifierMode_Realtime)) return NULL;
723         if (mti->isDisabled && mti->isDisabled(md, 0)) return NULL;
724         
725         if (build_shapekey_layers && me->key && ob->shapenr <= BLI_countlist(&me->key->block)) {
726                 key_to_mesh(BLI_findlink(&me->key->block, ob->shapenr-1), me);
727         }
728         
729         if (mti->type==eModifierTypeType_OnlyDeform) {
730                 int numVerts;
731                 float (*deformedVerts)[3] = mesh_getVertexCos(me, &numVerts);
732
733                 mti->deformVerts(md, ob, NULL, deformedVerts, numVerts, 0, 0);
734                 dm = mesh_create_derived(me, ob, deformedVerts);
735
736                 if (build_shapekey_layers)
737                         add_shapekey_layers(dm, me, ob);
738                 
739                 MEM_freeN(deformedVerts);
740         } else {
741                 DerivedMesh *tdm = mesh_create_derived(me, ob, NULL);
742
743                 if (build_shapekey_layers)
744                         add_shapekey_layers(tdm, me, ob);
745                 
746                 dm = mti->applyModifier(md, ob, tdm, 0, 0);
747
748                 if(tdm != dm) tdm->release(tdm);
749         }
750
751         return dm;
752 }
753
754 static float *get_editbmesh_orco_verts(BMEditMesh *em)
755 {
756         BMIter iter;
757         BMVert *eve;
758         float *orco;
759         int a, totvert;
760
761         /* these may not really be the orco's, but it's only for preview.
762          * could be solver better once, but isn't simple */
763
764         totvert= em->bm->totvert;
765         
766         orco = MEM_mallocN(sizeof(float)*3*totvert, "EditMesh Orco");
767
768         eve = BMIter_New(&iter, em->bm, BM_VERTS_OF_MESH, NULL);
769         for (a=0; eve; eve=BMIter_Step(&iter), a+=3) {
770                 copy_v3_v3(orco+a, eve->co);
771         }
772         
773         return orco;
774 }
775
776 /* orco custom data layer */
777 static void *get_orco_coords_dm(Object *ob, BMEditMesh *em, int layer, int *free)
778 {
779         *free= 0;
780
781         if(layer == CD_ORCO) {
782                 /* get original coordinates */
783                 *free= 1;
784
785                 if(em)
786                         return (float(*)[3])get_editbmesh_orco_verts(em);
787                 else
788                         return (float(*)[3])get_mesh_orco_verts(ob);
789         }
790         else if(layer == CD_CLOTH_ORCO) {
791                 /* apply shape key for cloth, this should really be solved
792                    by a more flexible customdata system, but not simple */
793                 if(!em) {
794                         ClothModifierData *clmd = (ClothModifierData *)modifiers_findByType(ob, eModifierType_Cloth);
795                         KeyBlock *kb= key_get_keyblock(ob_get_key(ob), clmd->sim_parms->shapekey_rest);
796
797                         if(kb->data)
798                                 return kb->data;
799                 }
800
801                 return NULL;
802         }
803
804         return NULL;
805 }
806
807 static DerivedMesh *create_orco_dm(Object *ob, Mesh *me, BMEditMesh *em, int layer)
808 {
809         DerivedMesh *dm;
810         float (*orco)[3];
811         int free;
812
813         if(em) dm= CDDM_from_BMEditMesh(em, me, FALSE, FALSE);
814         else dm= CDDM_from_mesh(me, ob);
815
816         orco= get_orco_coords_dm(ob, em, layer, &free);
817
818         if(orco) {
819                 CDDM_apply_vert_coords(dm, orco);
820                 if(free) MEM_freeN(orco);
821         }
822
823         CDDM_calc_normals(dm);
824
825         return dm;
826 }
827
828 static void add_orco_dm(Object *ob, BMEditMesh *em, DerivedMesh *dm,
829                                                 DerivedMesh *orcodm, int layer)
830 {
831         float (*orco)[3], (*layerorco)[3];
832         int totvert, free;
833
834         totvert= dm->getNumVerts(dm);
835
836         if(orcodm) {
837                 orco= MEM_callocN(sizeof(float)*3*totvert, "dm orco");
838                 free= 1;
839
840                 if(orcodm->getNumVerts(orcodm) == totvert)
841                         orcodm->getVertCos(orcodm, orco);
842                 else
843                         dm->getVertCos(dm, orco);
844         }
845         else
846                 orco= get_orco_coords_dm(ob, em, layer, &free);
847
848         if(orco) {
849                 if(layer == CD_ORCO)
850                         transform_mesh_orco_verts(ob->data, orco, totvert, 0);
851
852                 if(!(layerorco = DM_get_vert_data_layer(dm, layer))) {
853                         DM_add_vert_layer(dm, layer, CD_CALLOC, NULL);
854                         layerorco = DM_get_vert_data_layer(dm, layer);
855                 }
856
857                 memcpy(layerorco, orco, sizeof(float)*3*totvert);
858                 if(free) MEM_freeN(orco);
859         }
860 }
861
862 /* weight paint colors */
863
864 /* Something of a hack, at the moment deal with weightpaint
865  * by tucking into colors during modifier eval, only in
866  * wpaint mode. Works ok but need to make sure recalc
867  * happens on enter/exit wpaint.
868  */
869
870 void weight_to_rgb(float r_rgb[3], const float weight)
871 {
872         const float blend= ((weight/2.0f)+0.5f);
873
874         if (weight<=0.25f){     // blue->cyan
875                 r_rgb[0]= 0.0f;
876                 r_rgb[1]= blend*weight*4.0f;
877                 r_rgb[2]= blend;
878         }
879         else if (weight<=0.50f){        // cyan->green
880                 r_rgb[0]= 0.0f;
881                 r_rgb[1]= blend;
882                 r_rgb[2]= blend*(1.0f-((weight-0.25f)*4.0f));
883         }
884         else if (weight <= 0.75f){      // green->yellow
885                 r_rgb[0]= blend * ((weight-0.50f)*4.0f);
886                 r_rgb[1]= blend;
887                 r_rgb[2]= 0.0f;
888         }
889         else if (weight <= 1.0f){ // yellow->red
890                 r_rgb[0]= blend;
891                 r_rgb[1]= blend * (1.0f-((weight-0.75f)*4.0f));
892                 r_rgb[2]= 0.0f;
893         }
894         else {
895                 /* exceptional value, unclamped or nan,
896                  * avoid uninitialized memory use */
897                 r_rgb[0]= 1.0f;
898                 r_rgb[1]= 0.0f;
899                 r_rgb[2]= 1.0f;
900         }
901 }
902
903 /* draw_flag's for calc_weightpaint_vert_color */
904 enum {
905         CALC_WP_MULTIPAINT= (1<<0),
906         CALC_WP_AUTO_NORMALIZE= (1<<1)
907 };
908
909 static void weightpaint_color(unsigned char r_col[4], ColorBand *coba, const float input)
910 {
911         float colf[4];
912
913         if(coba) do_colorband(coba, input, colf);
914         else     weight_to_rgb(colf, input);
915
916         r_col[3] = (unsigned char)(colf[0] * 255.0f);
917         r_col[2] = (unsigned char)(colf[1] * 255.0f);
918         r_col[1] = (unsigned char)(colf[2] * 255.0f);
919         r_col[0] = 255;
920 }
921
922
923 static void calc_weightpaint_vert_color(
924         unsigned char r_col[4],
925         MDeformVert *dv, ColorBand *coba,
926         const int defbase_tot, const int defbase_act,
927         const char *dg_flags,
928         const int selected, const int draw_flag)
929 {
930         float input = 0.0f;
931         
932         int make_black= FALSE;
933
934         if ((selected > 1) && (draw_flag & CALC_WP_MULTIPAINT)) {
935                 int was_a_nonzero= FALSE;
936                 unsigned int i;
937
938                 MDeformWeight *dw= dv->dw;
939                 for (i = dv->totweight; i != 0; i--, dw++) {
940                         /* in multipaint, get the average if auto normalize is inactive
941                          * get the sum if it is active */
942                         if (dw->def_nr < defbase_tot) {
943                                 if (dg_flags[dw->def_nr]) {
944                                         if (dw->weight) {
945                                                 input += dw->weight;
946                                                 was_a_nonzero= TRUE;
947                                         }
948                                 }
949                         }
950                 }
951
952                 /* make it black if the selected groups have no weight on a vertex */
953                 if (was_a_nonzero == FALSE) {
954                         make_black = TRUE;
955                 }
956                 else if ((draw_flag & CALC_WP_AUTO_NORMALIZE) == FALSE) {
957                         input /= selected; /* get the average */
958                 }
959         }
960         else {
961                 /* default, non tricky behavior */
962                 input= defvert_find_weight(dv, defbase_act);
963         }
964
965         if (make_black) { /* TODO, theme color */
966                 r_col[3] = 0;
967                 r_col[2] = 0;
968                 r_col[1] = 0;
969                 r_col[0] = 255;
970         }
971         else {
972                 CLAMP(input, 0.0f, 1.0f);
973                 weightpaint_color(r_col, coba, input);
974         }
975 }
976
977 static ColorBand *stored_cb= NULL;
978
979 void vDM_ColorBand_store(ColorBand *coba)
980 {
981         stored_cb= coba;
982 }
983
984 /* return an array of vertex weight colors, caller must free.
985  *
986  * note that we could save some memory and allocate RGB only but then we'd need to
987  * re-arrange the colors when copying to the face since MCol has odd ordering,
988  * so leave this as is - campbell */
989 static unsigned char *calc_weightpaint_vert_array(Object *ob, DerivedMesh *dm, int const draw_flag, ColorBand *coba)
990 {
991         MDeformVert *dv = DM_get_vert_data_layer(dm, CD_MDEFORMVERT);
992         int numVerts = dm->getNumVerts(dm);
993         unsigned char *wtcol_v = MEM_mallocN (sizeof(unsigned char) * numVerts * 4, "weightmap_v");
994
995         if (dv) {
996                 unsigned char *wc = wtcol_v;
997                 unsigned int i;
998
999                 /* variables for multipaint */
1000                 const int defbase_tot = BLI_countlist(&ob->defbase);
1001                 const int defbase_act = ob->actdef-1;
1002                 char *dg_flags = MEM_mallocN(defbase_tot * sizeof(char), __func__);
1003                 const int selected = get_selected_defgroups(ob, dg_flags, defbase_tot);
1004
1005                 for (i = numVerts; i != 0; i--, wc += 4, dv++) {
1006                         calc_weightpaint_vert_color(wc, dv, coba, defbase_tot, defbase_act, dg_flags, selected, draw_flag);
1007                 }
1008
1009                 MEM_freeN(dg_flags);
1010         }
1011         else {
1012                 int col_i;
1013                 weightpaint_color((unsigned char *)&col_i, coba, 0.0f);
1014                 fill_vn_i((int *)wtcol_v, numVerts, col_i);
1015         }
1016
1017         return wtcol_v;
1018 }
1019
1020 /* return an array of vertex weight colors from given weights, caller must free.
1021  *
1022  * note that we could save some memory and allocate RGB only but then we'd need to
1023  * re-arrange the colors when copying to the face since MCol has odd ordering,
1024  * so leave this as is - campbell */
1025 static unsigned char *calc_colors_from_weights_array(const int num, float *weights)
1026 {
1027         unsigned char *wtcol_v = MEM_mallocN(sizeof(unsigned char) * num * 4, "weightmap_v");
1028         unsigned char *wc = wtcol_v;
1029         int i;
1030
1031         for (i = 0; i < num; i++, wc += 4, weights++)
1032                 weightpaint_color((unsigned char *) wc, NULL, *weights);
1033
1034         return wtcol_v;
1035 }
1036
1037 void DM_update_weight_mcol(Object *ob, DerivedMesh *dm, int const draw_flag,
1038                            float *weights, int num, const int *indices)
1039 {
1040         ColorBand *coba= stored_cb;     /* warning, not a local var */
1041
1042         unsigned char *wtcol_v;
1043         unsigned char *wtcol_f = dm->getTessFaceDataArray(dm, CD_WEIGHT_MCOL);
1044         unsigned char(*wtcol_l)[4] = CustomData_get_layer(dm->getLoopDataLayout(dm), CD_WEIGHT_MLOOPCOL);
1045         MFace *mf = dm->getTessFaceArray(dm);
1046         MLoop *mloop = dm->getLoopArray(dm), *ml;
1047         MPoly *mp = dm->getPolyArray(dm);
1048         int numFaces = dm->getNumTessFaces(dm);
1049         int numVerts = dm->getNumVerts(dm);
1050         int totloop;
1051         int i, j;
1052
1053         /* If no CD_WEIGHT_MCOL existed yet, add a new one! */
1054         if (!wtcol_f)
1055                 wtcol_f = CustomData_add_layer(&dm->faceData, CD_WEIGHT_MCOL, CD_CALLOC, NULL, numFaces);
1056
1057         if (wtcol_f) {
1058                 unsigned char *wtcol_f_step = wtcol_f;
1059
1060                 /* Weights are given by caller. */
1061                 if (weights) {
1062                         float *w = weights;
1063                         /* If indices is not NULL, it means we do not have weights for all vertices,
1064                          * so we must create them (and set them to zero)... */
1065                         if(indices) {
1066                                 w = MEM_callocN(sizeof(float)*numVerts, "Temp weight array DM_update_weight_mcol");
1067                                 i = num;
1068                                 while(i--)
1069                                         w[indices[i]] = weights[i];
1070                         }
1071
1072                         /* Convert float weights to colors. */
1073                         wtcol_v = calc_colors_from_weights_array(numVerts, w);
1074
1075                         if(indices)
1076                                 MEM_freeN(w);
1077                 }
1078
1079                 /* No weights given, take them from active vgroup(s). */
1080                 else
1081                         wtcol_v = calc_weightpaint_vert_array(ob, dm, draw_flag, coba);
1082
1083                 /* Now copy colors in all face verts. */
1084                 /*first add colors to the tesselation faces*/
1085                 for (i = 0; i < numFaces; i++, mf++, wtcol_f_step += (4 * 4)) {
1086                         /*origindex being NULL means we're operating on original mesh data*/
1087 #if 0
1088                         unsigned int fidx= mf->v4 ? 3:2;
1089
1090 #else   /* better zero out triangles 4th component. else valgrind complains when the buffer's copied */
1091                         unsigned int fidx;
1092                         if (mf->v4) {
1093                                 fidx = 3;
1094                         }
1095                         else {
1096                                 fidx = 2;
1097                                 *(int *)(&wtcol_f_step[3 * 4]) = 0;
1098                         }
1099 #endif
1100
1101                         do {
1102                                 copy_v4_v4_char((char *)&wtcol_f_step[fidx * 4],
1103                                                 (char *)&wtcol_v[4 * (*(&mf->v1 + fidx))]);
1104                         } while (fidx--);
1105                 }
1106
1107                 /*now add to loops, so the data can be passed through the modifier stack*/
1108                 /* If no CD_WEIGHT_MLOOPCOL existed yet, we have to add a new one! */
1109                 if (!wtcol_l) {
1110                         BLI_array_declare(wtcol_l);
1111                         totloop = 0;
1112                         for (i=0; i<dm->numPolyData; i++, mp++) {
1113                                 ml = mloop + mp->loopstart;
1114
1115                                 for (j=0; j<mp->totloop; j++, ml++, totloop++) {
1116                                         BLI_array_growone(wtcol_l);
1117                                         copy_v4_v4_char((char *)&wtcol_l[totloop],
1118                                                         (char *)&wtcol_v[4 * ml->v]);
1119                                 }
1120                         }
1121                         CustomData_add_layer(&dm->loopData, CD_WEIGHT_MLOOPCOL, CD_ASSIGN, wtcol_l, totloop);
1122                 }
1123                 else {
1124                         totloop = 0;
1125                         for (i=0; i < dm->numPolyData; i++, mp++) {
1126                                 ml = mloop + mp->loopstart;
1127
1128                                 for (j=0; j < mp->totloop; j++, ml++, totloop++) {
1129                                         copy_v4_v4_char((char *)&wtcol_l[totloop],
1130                                                         (char *)&wtcol_v[4 * ml->v]);
1131                                 }
1132                         }
1133                 }
1134                 MEM_freeN(wtcol_v);
1135         }
1136 }
1137
1138
1139 static void shapekey_layers_to_keyblocks(DerivedMesh *dm, Mesh *me, int actshape_uid)
1140 {
1141         KeyBlock *kb;
1142         int i, j, tot;
1143         
1144         if (!me->key)
1145                 return; 
1146         
1147         tot = CustomData_number_of_layers(&dm->vertData, CD_SHAPEKEY);
1148         for (i=0; i<tot; i++) {
1149                 CustomDataLayer *layer = &dm->vertData.layers[CustomData_get_layer_index_n(&dm->vertData, CD_SHAPEKEY, i)];
1150                 float (*cos)[3], (*kbcos)[3];
1151                 
1152                 for (kb=me->key->block.first; kb; kb=kb->next) {
1153                         if (kb->uid == layer->uid)
1154                                 break;
1155                 }
1156                 
1157                 if (!kb) {
1158                         kb = add_keyblock(me->key, layer->name);
1159                         kb->uid = layer->uid;
1160                 }
1161                 
1162                 if (kb->data)
1163                         MEM_freeN(kb->data);
1164                 
1165                 cos = CustomData_get_layer_n(&dm->vertData, CD_SHAPEKEY, i);
1166                 kb->totelem = dm->numVertData;
1167
1168                 kb->data = kbcos = MEM_mallocN(sizeof(float)*3*kb->totelem, "kbcos DerivedMesh.c");
1169                 if (kb->uid == actshape_uid) {
1170                         MVert *mvert = dm->getVertArray(dm);
1171                         
1172                         for (j=0; j<dm->numVertData; j++, kbcos++, mvert++) {
1173                                 copy_v3_v3(*kbcos, mvert->co);
1174                         }
1175                 } else {
1176                         for (j=0; j<kb->totelem; j++, cos++, kbcos++) {
1177                                 copy_v3_v3(*kbcos, *cos);
1178                         }
1179                 }
1180         }
1181         
1182         for (kb=me->key->block.first; kb; kb=kb->next) {
1183                 if (kb->totelem != dm->numVertData) {
1184                         if (kb->data)
1185                                 MEM_freeN(kb->data);
1186                         
1187                         kb->totelem = dm->numVertData;
1188                         kb->data = MEM_callocN(sizeof(float)*3*kb->totelem, "kb->data derivedmesh.c");
1189                         fprintf(stderr, "%s: lost a shapekey layer! (bmesh internal error)\n", __func__);
1190                 }
1191         }
1192 }
1193
1194 static void add_shapekey_layers(DerivedMesh *dm, Mesh *me, Object *UNUSED(ob))
1195 {
1196         KeyBlock *kb;
1197         Key *key = me->key;
1198         int a, b;
1199         
1200         if (!me->key)
1201                 return;
1202         
1203         if (dm->numVertData != me->totvert) {
1204                 printf("error in add_shapekey_layers: dm isn't the same size as me\n");
1205                 return;
1206         }
1207                 
1208         for (a=0, kb=key->block.first; kb; kb=kb->next, a++) {
1209                 float (*cos)[3] = CustomData_add_layer_named(&dm->vertData, CD_SHAPEKEY, CD_CALLOC, NULL, dm->numVertData, kb->name);
1210                 int ci = CustomData_get_layer_index_n(&dm->vertData, CD_SHAPEKEY, a);
1211                 
1212                 dm->vertData.layers[ci].uid = kb->uid;
1213                 if (kb->totelem != dm->numVertData) {
1214                         printf("error in add_shapekey_layers: totelem and totvert don't match");
1215                         continue;
1216                 }
1217                 
1218                 for (b=0; b<kb->totelem; b++, cos++) {
1219                         copy_v3_v3((float *)cos, ((float*)kb->data)+b*3);
1220                 }
1221         }
1222 }
1223
1224 /* new value for useDeform -1  (hack for the gameengine):
1225  * - apply only the modifier stack of the object, skipping the virtual modifiers,
1226  * - don't apply the key
1227  * - apply deform modifiers and input vertexco
1228  */
1229 static void mesh_calc_modifiers(Scene *scene, Object *ob, float (*inputVertexCos)[3],
1230                                                                 DerivedMesh **deform_r, DerivedMesh **final_r,
1231                                                                 int useRenderParams, int useDeform,
1232                                                                 int needMapping, CustomDataMask dataMask, 
1233                                                                 int index, int useCache, int build_shapekey_layers)
1234 {
1235         Mesh *me = ob->data;
1236         ModifierData *firstmd, *md, *previewmd = NULL;
1237         LinkNode *datamasks, *curr;
1238         CustomDataMask mask, nextmask, append_mask = 0;
1239         float (*deformedVerts)[3] = NULL;
1240         DerivedMesh *dm=NULL, *orcodm, *clothorcodm, *finaldm;
1241         int numVerts = me->totvert;
1242         int required_mode;
1243         int isPrevDeform= FALSE;
1244         int skipVirtualArmature = (useDeform < 0);
1245         MultiresModifierData *mmd= get_multires_modifier(scene, ob, 0);
1246         int has_multires = mmd != NULL, multires_applied = 0;
1247         int sculpt_mode = ob->mode & OB_MODE_SCULPT && ob->sculpt;
1248
1249         const int draw_flag= ((scene->toolsettings->multipaint ? CALC_WP_MULTIPAINT : 0) |
1250                               (scene->toolsettings->auto_normalize ? CALC_WP_AUTO_NORMALIZE : 0));
1251         /* Generic preview only in object mode! */
1252         const int do_mod_mcol = (ob->mode == OB_MODE_OBJECT);
1253 #if 0 /* XXX Will re-enable this when we have global mod stack options. */
1254         const int do_final_wmcol = (scene->toolsettings->weights_preview == WP_WPREVIEW_FINAL) && do_wmcol;
1255 #endif
1256         const int do_final_wmcol = FALSE;
1257         int do_init_wmcol = ((dataMask & CD_MASK_WEIGHT_MCOL) && (ob->mode & OB_MODE_WEIGHT_PAINT) && !do_final_wmcol);
1258         /* XXX Same as above... For now, only weights preview in WPaint mode. */
1259         const int do_mod_wmcol = do_init_wmcol;
1260
1261         if(mmd && !mmd->sculptlvl)
1262                 has_multires = 0;
1263
1264         if(!skipVirtualArmature) {
1265                 firstmd = modifiers_getVirtualModifierList(ob);
1266         }
1267         else {
1268                 /* game engine exception */
1269                 firstmd = ob->modifiers.first;
1270                 if(firstmd && firstmd->type == eModifierType_Armature)
1271                         firstmd = firstmd->next;
1272         }
1273
1274         md = firstmd;
1275
1276         modifiers_clearErrors(ob);
1277
1278         if(useRenderParams) required_mode = eModifierMode_Render;
1279         else required_mode = eModifierMode_Realtime;
1280
1281         datamasks = modifiers_calcDataMasks(scene, ob, md, dataMask, required_mode);
1282         curr = datamasks;
1283
1284         if(do_mod_wmcol || do_mod_mcol) {
1285                 /* Find the last active modifier generating a preview, or NULL if none. */
1286                 /* XXX Currently, DPaint modifier just ignores this.
1287                  *     Needs a stupid hack...
1288                  *     The whole "modifier preview" thing has to be (re?)designed, anyway! */
1289                 previewmd = modifiers_getLastPreview(scene, md, required_mode);
1290         }
1291
1292         if(deform_r) *deform_r = NULL;
1293         *final_r = NULL;
1294
1295         if(useDeform) {
1296                 if(inputVertexCos)
1297                         deformedVerts = inputVertexCos;
1298                 
1299                 /* Apply all leading deforming modifiers */
1300                 for(;md; md = md->next, curr = curr->next) {
1301                         ModifierTypeInfo *mti = modifierType_getInfo(md->type);
1302
1303                         md->scene= scene;
1304                         
1305                         if(!modifier_isEnabled(scene, md, required_mode)) continue;
1306                         if(useDeform < 0 && mti->dependsOnTime && mti->dependsOnTime(md)) continue;
1307
1308                         if(mti->type == eModifierTypeType_OnlyDeform) {
1309                                 if(!deformedVerts)
1310                                         deformedVerts = mesh_getVertexCos(me, &numVerts);
1311
1312                                 mti->deformVerts(md, ob, NULL, deformedVerts, numVerts, useRenderParams, useDeform);
1313                         } else {
1314                                 break;
1315                         }
1316                         
1317                         /* grab modifiers until index i */
1318                         if((index >= 0) && (modifiers_indexInObject(ob, md) >= index))
1319                                 break;
1320                 }
1321
1322                 /* Result of all leading deforming modifiers is cached for
1323                  * places that wish to use the original mesh but with deformed
1324                  * coordinates (vpaint, etc.)
1325                  */
1326                 if (deform_r) {
1327                         *deform_r = CDDM_from_mesh(me, ob);
1328                          
1329                         if (build_shapekey_layers)
1330                                 add_shapekey_layers(dm, me, ob);
1331                         
1332                         if(deformedVerts) {
1333                                 CDDM_apply_vert_coords(*deform_r, deformedVerts);
1334                                 CDDM_calc_normals(*deform_r);
1335                         }
1336                 }
1337         } else {
1338                 /* default behaviour for meshes */
1339                 if(inputVertexCos)
1340                         deformedVerts = inputVertexCos;
1341                 else
1342                         deformedVerts = mesh_getVertexCos(me, &numVerts);
1343         }
1344
1345
1346         /* Now apply all remaining modifiers. If useDeform is off then skip
1347          * OnlyDeform ones. 
1348          */
1349         dm = NULL;
1350         orcodm = NULL;
1351         clothorcodm = NULL;
1352
1353         for(;md; md = md->next, curr = curr->next) {
1354                 ModifierTypeInfo *mti = modifierType_getInfo(md->type);
1355
1356                 md->scene= scene;
1357
1358                 if(!modifier_isEnabled(scene, md, required_mode)) continue;
1359                 if(mti->type == eModifierTypeType_OnlyDeform && !useDeform) continue;
1360                 if((mti->flags & eModifierTypeFlag_RequiresOriginalData) && dm) {
1361                         modifier_setError(md, "Modifier requires original data, bad stack position.");
1362                         continue;
1363                 }
1364                 if(sculpt_mode && (!has_multires || multires_applied)) {
1365                         int unsupported= 0;
1366
1367                         if(scene->toolsettings->sculpt->flags & SCULPT_ONLY_DEFORM)
1368                                 unsupported|= mti->type != eModifierTypeType_OnlyDeform;
1369
1370                         unsupported|= md->type == eModifierType_Multires && ((MultiresModifierData*)md)->sculptlvl==0;
1371                         unsupported|= multires_applied;
1372
1373                         if(unsupported) {
1374                                 modifier_setError(md, "Not supported in sculpt mode.");
1375                                 continue;
1376                         }
1377                 }
1378                 if(needMapping && !modifier_supportsMapping(md)) continue;
1379                 if(useDeform < 0 && mti->dependsOnTime && mti->dependsOnTime(md)) continue;
1380
1381                 /* add an orco layer if needed by this modifier */
1382                 if(mti->requiredDataMask)
1383                         mask = mti->requiredDataMask(ob, md);
1384                 else
1385                         mask = 0;
1386
1387                 if(dm && (mask & CD_MASK_ORCO))
1388                         add_orco_dm(ob, NULL, dm, orcodm, CD_ORCO);
1389
1390                 /* How to apply modifier depends on (a) what we already have as
1391                  * a result of previous modifiers (could be a DerivedMesh or just
1392                  * deformed vertices) and (b) what type the modifier is.
1393                  */
1394
1395                 if(mti->type == eModifierTypeType_OnlyDeform) {
1396                         /* No existing verts to deform, need to build them. */
1397                         if(!deformedVerts) {
1398                                 if(dm) {
1399                                         /* Deforming a derived mesh, read the vertex locations
1400                                          * out of the mesh and deform them. Once done with this
1401                                          * run of deformers verts will be written back.
1402                                          */
1403                                         numVerts = dm->getNumVerts(dm);
1404                                         deformedVerts =
1405                                                 MEM_mallocN(sizeof(*deformedVerts) * numVerts, "dfmv");
1406                                         dm->getVertCos(dm, deformedVerts);
1407                                 } else {
1408                                         deformedVerts = mesh_getVertexCos(me, &numVerts);
1409                                 }
1410                         }
1411
1412                         /* if this is not the last modifier in the stack then recalculate the normals
1413                          * to avoid giving bogus normals to the next modifier see: [#23673] */
1414                         if(isPrevDeform &&  mti->dependsOnNormals && mti->dependsOnNormals(md)) {
1415                                 /* XXX, this covers bug #23673, but we may need normal calc for other types */
1416                                 if(dm && dm->type == DM_TYPE_CDDM) {
1417                                         CDDM_apply_vert_coords(dm, deformedVerts);
1418                                         CDDM_calc_normals(dm);
1419                                 }
1420                         }
1421
1422                         mti->deformVerts(md, ob, dm, deformedVerts, numVerts, useRenderParams, useDeform);
1423                 } else {
1424                         DerivedMesh *ndm;
1425
1426                         /* determine which data layers are needed by following modifiers */
1427                         if(curr->next)
1428                                 nextmask= (CustomDataMask)GET_INT_FROM_POINTER(curr->next->link);
1429                         else
1430                                 nextmask= dataMask;
1431
1432                         /* apply vertex coordinates or build a DerivedMesh as necessary */
1433                         if(dm) {
1434                                 if(deformedVerts) {
1435                                         DerivedMesh *tdm = CDDM_copy(dm, 0);
1436                                         dm->release(dm);
1437                                         dm = tdm;
1438
1439                                         CDDM_apply_vert_coords(dm, deformedVerts);
1440                                         CDDM_calc_normals(dm);
1441                                 }
1442                         } else {
1443                                 dm = CDDM_from_mesh(me, ob);
1444
1445                                 if (build_shapekey_layers)
1446                                         add_shapekey_layers(dm, me, ob);
1447
1448                                 if(deformedVerts) {
1449                                         CDDM_apply_vert_coords(dm, deformedVerts);
1450                                         CDDM_calc_normals(dm);
1451                                 }
1452
1453                                 if(do_init_wmcol)
1454                                         DM_update_weight_mcol(ob, dm, draw_flag, NULL, 0, NULL);
1455
1456                                 /* Constructive modifiers need to have an origindex
1457                                  * otherwise they wont have anywhere to copy the data from.
1458                                  *
1459                                  * Also create ORIGINDEX data if any of the following modifiers
1460                                  * requests it, this way Mirror, Solidify etc will keep ORIGINDEX
1461                                  * data by using generic DM_copy_vert_data() functions.
1462                                  */
1463                                 if(needMapping || (nextmask & CD_MASK_ORIGINDEX)) {
1464                                         /* calc */
1465                                         DM_add_vert_layer(dm, CD_ORIGINDEX, CD_CALLOC, NULL);
1466                                         DM_add_edge_layer(dm, CD_ORIGINDEX, CD_CALLOC, NULL);
1467                                         DM_add_poly_layer(dm, CD_ORIGINDEX, CD_CALLOC, NULL);
1468
1469                                         range_vn_i(DM_get_vert_data_layer(dm, CD_ORIGINDEX), dm->numVertData, 0);
1470                                         range_vn_i(DM_get_edge_data_layer(dm, CD_ORIGINDEX), dm->numEdgeData, 0);
1471                                         range_vn_i(DM_get_poly_data_layer(dm, CD_ORIGINDEX), dm->numPolyData, 0);
1472                                 }
1473
1474 /*                              if((dataMask & CD_MASK_WEIGHT_MCOL) && (ob->mode & OB_MODE_WEIGHT_PAINT))*/
1475 /*                                      add_weight_mcol_dm(ob, dm, draw_flag);*/
1476
1477                         }
1478
1479                         
1480                         /* set the DerivedMesh to only copy needed data */
1481                         mask= (CustomDataMask)GET_INT_FROM_POINTER(curr->link);
1482                         /* needMapping check here fixes bug [#28112], otherwise its
1483                          * possible that it wont be copied */
1484                         mask |= append_mask;
1485                         DM_set_only_copy(dm, mask | (needMapping ? CD_MASK_ORIGINDEX : 0));
1486                         
1487                         /* add cloth rest shape key if need */
1488                         if(mask & CD_MASK_CLOTH_ORCO)
1489                                 add_orco_dm(ob, NULL, dm, clothorcodm, CD_CLOTH_ORCO);
1490
1491                         /* add an origspace layer if needed */
1492                         if(((CustomDataMask)GET_INT_FROM_POINTER(curr->link)) & CD_MASK_ORIGSPACE)
1493                                 if(!CustomData_has_layer(&dm->faceData, CD_ORIGSPACE))
1494                                         DM_add_tessface_layer(dm, CD_ORIGSPACE, CD_DEFAULT, NULL);
1495
1496                         ndm = mti->applyModifier(md, ob, dm, useRenderParams, useCache);
1497
1498                         if(ndm) {
1499                                 /* if the modifier returned a new dm, release the old one */
1500                                 if(dm && dm != ndm) dm->release(dm);
1501
1502                                 dm = ndm;
1503
1504                                 if(deformedVerts) {
1505                                         if(deformedVerts != inputVertexCos)
1506                                                 MEM_freeN(deformedVerts);
1507
1508                                         deformedVerts = NULL;
1509                                 }
1510                         } 
1511
1512                         /* create an orco derivedmesh in parallel */
1513                         if(nextmask & CD_MASK_ORCO) {
1514                                 if(!orcodm)
1515                                         orcodm= create_orco_dm(ob, me, NULL, CD_ORCO);
1516
1517                                 nextmask &= ~CD_MASK_ORCO;
1518                                 DM_set_only_copy(orcodm, nextmask | CD_MASK_ORIGINDEX);
1519                                 ndm = mti->applyModifier(md, ob, orcodm, useRenderParams, 0);
1520
1521                                 if(ndm) {
1522                                         /* if the modifier returned a new dm, release the old one */
1523                                         if(orcodm && orcodm != ndm) orcodm->release(orcodm);
1524                                         orcodm = ndm;
1525                                 }
1526                         }
1527
1528                         /* create cloth orco derivedmesh in parallel */
1529                         if(nextmask & CD_MASK_CLOTH_ORCO) {
1530                                 if(!clothorcodm)
1531                                         clothorcodm= create_orco_dm(ob, me, NULL, CD_CLOTH_ORCO);
1532
1533                                 nextmask &= ~CD_MASK_CLOTH_ORCO;
1534                                 DM_set_only_copy(clothorcodm, nextmask | CD_MASK_ORIGINDEX);
1535                                 ndm = mti->applyModifier(md, ob, clothorcodm, useRenderParams, 0);
1536
1537                                 if(ndm) {
1538                                         /* if the modifier returned a new dm, release the old one */
1539                                         if(clothorcodm && clothorcodm != ndm) clothorcodm->release(clothorcodm);
1540                                         clothorcodm = ndm;
1541                                 }
1542                         }
1543
1544                         /* in case of dynamic paint, make sure preview mask remains for following modifiers */
1545                         /* XXX Temp and hackish solution! */
1546                         if (md->type == eModifierType_DynamicPaint)
1547                                 append_mask |= CD_MASK_WEIGHT_MCOL;
1548                         /* In case of active preview modifier, make sure preview mask remains for following modifiers. */
1549                         else if ((md == previewmd) && (do_mod_wmcol)) {
1550                                 DM_update_weight_mcol(ob, dm, draw_flag, NULL, 0, NULL);
1551                                 append_mask |= CD_MASK_WEIGHT_MCOL;
1552                         }
1553                 }
1554
1555                 isPrevDeform= (mti->type == eModifierTypeType_OnlyDeform);
1556
1557                 /* grab modifiers until index i */
1558                 if((index >= 0) && (modifiers_indexInObject(ob, md) >= index))
1559                         break;
1560
1561                 if(sculpt_mode && md->type == eModifierType_Multires)
1562                         multires_applied = 1;
1563         }
1564
1565         for(md=firstmd; md; md=md->next)
1566                 modifier_freeTemporaryData(md);
1567
1568         /* Yay, we are done. If we have a DerivedMesh and deformed vertices
1569          * need to apply these back onto the DerivedMesh. If we have no
1570          * DerivedMesh then we need to build one.
1571          */
1572         if(dm && deformedVerts) {
1573                 finaldm = CDDM_copy(dm, 0);
1574
1575                 dm->release(dm);
1576
1577                 CDDM_apply_vert_coords(finaldm, deformedVerts);
1578                 CDDM_calc_normals(finaldm);
1579
1580 #if 0 /* For later nice mod preview! */
1581                 /* In case we need modified weights in CD_WEIGHT_MCOL, we have to re-compute it. */
1582                 if(do_final_wmcol)
1583                         DM_update_weight_mcol(ob, finaldm, draw_flag, NULL, 0, NULL);
1584 #endif
1585         } else if(dm) {
1586                 finaldm = dm;
1587
1588 #if 0 /* For later nice mod preview! */
1589                 /* In case we need modified weights in CD_WEIGHT_MCOL, we have to re-compute it. */
1590                 if(do_final_wmcol)
1591                         DM_update_weight_mcol(ob, finaldm, draw_flag, NULL, 0, NULL);
1592 #endif
1593         } else {
1594                 int recalc_normals= 0;
1595
1596                 finaldm = CDDM_from_mesh(me, ob);
1597                 
1598                 if(build_shapekey_layers) {
1599                         add_shapekey_layers(finaldm, me, ob);
1600                         recalc_normals= 1;
1601                 }
1602                 
1603                 if(deformedVerts) {
1604                         CDDM_apply_vert_coords(finaldm, deformedVerts);
1605                         recalc_normals= 1;
1606                 }
1607
1608                 if(recalc_normals) {
1609                         CDDM_calc_normals(finaldm);
1610                 }
1611
1612                 /* In this case, we should never have weight-modifying modifiers in stack... */
1613                 if(do_init_wmcol)
1614                         DM_update_weight_mcol(ob, finaldm, draw_flag, NULL, 0, NULL);
1615         }
1616
1617         /* add an orco layer if needed */
1618         if(dataMask & CD_MASK_ORCO) {
1619                 add_orco_dm(ob, NULL, finaldm, orcodm, CD_ORCO);
1620
1621                 if(deform_r && *deform_r)
1622                         add_orco_dm(ob, NULL, *deform_r, NULL, CD_ORCO);
1623         }
1624
1625 #ifdef WITH_GAMEENGINE
1626         /* NavMesh - this is a hack but saves having a NavMesh modifier */
1627         if ((ob->gameflag & OB_NAVMESH) && (finaldm->type == DM_TYPE_CDDM)) {
1628                 DerivedMesh *tdm;
1629                 tdm= navmesh_dm_createNavMeshForVisualization(finaldm);
1630                 if (finaldm != tdm) {
1631                         finaldm->release(finaldm);
1632                         finaldm= tdm;
1633                 }
1634         }
1635 #endif /* WITH_GAMEENGINE */
1636
1637         /* --------------------------------------------------------------------- */
1638         /* First calculate the polygon and vertex normals, re-tesselation
1639          * copies these into the tessface's normal layer */
1640         finaldm->calcNormals(finaldm);
1641         /* Re-tesselation is necessary to push render data (uvs, textures, colors)
1642          * from loops and polys onto the tessfaces. This may be currently be
1643          * redundantin cases where the render mode doesn't use these inputs, but
1644          * ideally eventually tesselation would happen on-demand, and this is one
1645          * of the primary places it would be needed. */
1646         finaldm->recalcTesselation(finaldm);
1647         /* Need to watch this, it can cause issues, see bug [#29338]             */
1648         /* take care with this block, we really need testing frameworks          */
1649         /* --------------------------------------------------------------------- */
1650
1651
1652         *final_r = finaldm;
1653
1654         if(orcodm)
1655                 orcodm->release(orcodm);
1656         if(clothorcodm)
1657                 clothorcodm->release(clothorcodm);
1658
1659         if(deformedVerts && deformedVerts != inputVertexCos)
1660                 MEM_freeN(deformedVerts);
1661
1662         BLI_linklist_free(datamasks, NULL);
1663 }
1664
1665 float (*editbmesh_get_vertex_cos(BMEditMesh *em, int *numVerts_r))[3]
1666 {
1667         int i, numVerts = *numVerts_r = em->bm->totvert;
1668         float (*cos)[3];
1669         BMIter iter;
1670         BMVert *eve;
1671
1672         cos = MEM_mallocN(sizeof(float)*3*numVerts, "vertexcos");
1673
1674         eve = BMIter_New(&iter, em->bm, BM_VERTS_OF_MESH, NULL);
1675         for (i=0; eve; eve=BMIter_Step(&iter), i++) {
1676                 copy_v3_v3(cos[i], eve->co);
1677         }
1678
1679         return cos;
1680 }
1681
1682 int editbmesh_modifier_is_enabled(Scene *scene, ModifierData *md, DerivedMesh *dm)
1683 {
1684         ModifierTypeInfo *mti = modifierType_getInfo(md->type);
1685         int required_mode = eModifierMode_Realtime | eModifierMode_Editmode;
1686
1687         if(!modifier_isEnabled(scene, md, required_mode)) return 0;
1688         if((mti->flags & eModifierTypeFlag_RequiresOriginalData) && dm) {
1689                 modifier_setError(md, "Modifier requires original data, bad stack position.");
1690                 return 0;
1691         }
1692         
1693         return 1;
1694 }
1695
1696 static void editbmesh_calc_modifiers(Scene *scene, Object *ob, BMEditMesh *em, DerivedMesh **cage_r,
1697                                                                         DerivedMesh **final_r,
1698                                                                         CustomDataMask dataMask)
1699 {
1700         ModifierData *md;
1701         float (*deformedVerts)[3] = NULL;
1702         CustomDataMask mask;
1703         DerivedMesh *dm, *orcodm = NULL;
1704         int i, numVerts = 0, cageIndex = modifiers_getCageIndex(scene, ob, NULL, 1);
1705         LinkNode *datamasks, *curr;
1706         int required_mode = eModifierMode_Realtime | eModifierMode_Editmode;
1707
1708         modifiers_clearErrors(ob);
1709
1710         if(cage_r && cageIndex == -1) {
1711                 *cage_r = getEditDerivedBMesh(em, ob, NULL);
1712         }
1713
1714         dm = NULL;
1715         md = modifiers_getVirtualModifierList(ob);
1716
1717         datamasks = modifiers_calcDataMasks(scene, ob, md, dataMask, required_mode);
1718
1719         curr = datamasks;
1720         for(i = 0; md; i++, md = md->next, curr = curr->next) {
1721                 ModifierTypeInfo *mti = modifierType_getInfo(md->type);
1722
1723                 md->scene= scene;
1724                 
1725                 if(!editbmesh_modifier_is_enabled(scene, md, dm))
1726                         continue;
1727
1728                 /* add an orco layer if needed by this modifier */
1729                 if(dm && mti->requiredDataMask) {
1730                         mask = mti->requiredDataMask(ob, md);
1731                         if(mask & CD_MASK_ORCO)
1732                                 add_orco_dm(ob, em, dm, orcodm, CD_ORCO);
1733                 }
1734
1735                 /* How to apply modifier depends on (a) what we already have as
1736                  * a result of previous modifiers (could be a DerivedMesh or just
1737                  * deformed vertices) and (b) what type the modifier is.
1738                  */
1739
1740                 if(mti->type == eModifierTypeType_OnlyDeform) {
1741                         /* No existing verts to deform, need to build them. */
1742                         if(!deformedVerts) {
1743                                 if(dm) {
1744                                         /* Deforming a derived mesh, read the vertex locations
1745                                          * out of the mesh and deform them. Once done with this
1746                                          * run of deformers verts will be written back.
1747                                          */
1748                                         numVerts = dm->getNumVerts(dm);
1749                                         deformedVerts =
1750                                                 MEM_mallocN(sizeof(*deformedVerts) * numVerts, "dfmv");
1751                                         dm->getVertCos(dm, deformedVerts);
1752                                 } else {
1753                                         deformedVerts = editbmesh_get_vertex_cos(em, &numVerts);
1754                                 }
1755                         }
1756
1757                         if (mti->deformVertsEM)
1758                                 mti->deformVertsEM(md, ob, em, dm, deformedVerts, numVerts);
1759                         else mti->deformVerts(md, ob, dm, deformedVerts, numVerts, 0, 0);
1760                 } else {
1761                         DerivedMesh *ndm;
1762
1763                         /* apply vertex coordinates or build a DerivedMesh as necessary */
1764                         if(dm) {
1765                                 if(deformedVerts) {
1766                                         DerivedMesh *tdm = CDDM_copy(dm, 0);
1767                                         if(!(cage_r && dm == *cage_r)) dm->release(dm);
1768                                         dm = tdm;
1769
1770                                         CDDM_apply_vert_coords(dm, deformedVerts);
1771                                         CDDM_calc_normals(dm);
1772                                 } else if(cage_r && dm == *cage_r) {
1773                                         /* dm may be changed by this modifier, so we need to copy it
1774                                          */
1775                                         dm = CDDM_copy(dm, 0);
1776                                 }
1777
1778                         } else {
1779                                 dm = CDDM_from_BMEditMesh(em, ob->data, FALSE, FALSE);
1780
1781                                 if(deformedVerts) {
1782                                         CDDM_apply_vert_coords(dm, deformedVerts);
1783                                         CDDM_calc_normals(dm);
1784                                 }
1785                         }
1786
1787                         /* create an orco derivedmesh in parallel */
1788                         mask= (CustomDataMask)GET_INT_FROM_POINTER(curr->link);
1789                         if(mask & CD_MASK_ORCO) {
1790                                 if(!orcodm)
1791                                         orcodm= create_orco_dm(ob, ob->data, em, CD_ORCO);
1792
1793                                 mask &= ~CD_MASK_ORCO;
1794                                 DM_set_only_copy(orcodm, mask | CD_MASK_ORIGINDEX);
1795
1796                                 if (mti->applyModifierEM)
1797                                         ndm = mti->applyModifierEM(md, ob, em, orcodm);
1798                                 else
1799                                         ndm = mti->applyModifier(md, ob, orcodm, 0, 0);
1800
1801                                 if(ndm) {
1802                                         /* if the modifier returned a new dm, release the old one */
1803                                         if(orcodm && orcodm != ndm) orcodm->release(orcodm);
1804                                         orcodm = ndm;
1805                                 }
1806                         }
1807
1808                         /* set the DerivedMesh to only copy needed data */
1809                         mask= (CustomDataMask)GET_INT_FROM_POINTER(curr->link); /* CD_MASK_ORCO may have been cleared above */
1810
1811                         DM_set_only_copy(dm, mask | CD_MASK_ORIGINDEX);
1812
1813                         if(mask & CD_MASK_ORIGSPACE)
1814                                 if(!CustomData_has_layer(&dm->faceData, CD_ORIGSPACE))
1815                                         DM_add_tessface_layer(dm, CD_ORIGSPACE, CD_DEFAULT, NULL);
1816                         
1817                         if (mti->applyModifierEM)
1818                                 ndm = mti->applyModifierEM(md, ob, em, dm);
1819                         else
1820                                 ndm = mti->applyModifier(md, ob, dm, 0, 0);
1821
1822                         if (ndm) {
1823                                 if(dm && dm != ndm)
1824                                         dm->release(dm);
1825
1826                                 dm = ndm;
1827
1828                                 if (deformedVerts) {
1829                                         MEM_freeN(deformedVerts);
1830                                         deformedVerts = NULL;
1831                                 }
1832                         }
1833                 }
1834
1835                 if(cage_r && i == cageIndex) {
1836                         if(dm && deformedVerts) {
1837                                 *cage_r = CDDM_copy(dm, 0);
1838                                 CDDM_apply_vert_coords(*cage_r, deformedVerts);
1839                         } else if(dm) {
1840                                 *cage_r = dm;
1841                         } else {
1842                                 *cage_r =
1843                                         getEditDerivedBMesh(em, ob,
1844                                                 deformedVerts ? MEM_dupallocN(deformedVerts) : NULL);
1845                         }
1846                 }
1847         }
1848
1849         BLI_linklist_free(datamasks, NULL);
1850
1851         /* Yay, we are done. If we have a DerivedMesh and deformed vertices need
1852          * to apply these back onto the DerivedMesh. If we have no DerivedMesh
1853          * then we need to build one.
1854          */
1855         if(dm && deformedVerts) {
1856                 *final_r = CDDM_copy(dm, 0);
1857
1858                 if(!(cage_r && dm == *cage_r)) dm->release(dm);
1859
1860                 CDDM_apply_vert_coords(*final_r, deformedVerts);
1861                 CDDM_calc_normals(*final_r); /* was CDDM_calc_normals_mapping - campbell */
1862         } else if (dm) {
1863                 *final_r = dm;
1864                 (*final_r)->calcNormals(*final_r); /* BMESH_ONLY - BMESH_TODO. check if this is needed */
1865         } else if (!deformedVerts && cage_r && *cage_r) {
1866                 *final_r = *cage_r;
1867                 (*final_r)->calcNormals(*final_r); /* BMESH_ONLY - BMESH_TODO. check if this is needed */
1868         } else {
1869                 *final_r = getEditDerivedBMesh(em, ob, deformedVerts);
1870                 deformedVerts = NULL;
1871                 (*final_r)->calcNormals(*final_r); /* BMESH_ONLY - BMESH_TODO. check if this is needed */
1872         }
1873
1874         /* --- */
1875         /* BMESH_ONLY, ensure tessface's used for drawing,
1876          * but dont recalculate if the last modifier in the stack gives us tessfaces  */
1877         DM_ensure_tessface(*final_r);
1878         if (cage_r && (*cage_r != *final_r)) DM_ensure_tessface(*cage_r);
1879         /* --- */
1880
1881         /* add an orco layer if needed */
1882         if(dataMask & CD_MASK_ORCO)
1883                 add_orco_dm(ob, em, *final_r, orcodm, CD_ORCO);
1884
1885         if(orcodm)
1886                 orcodm->release(orcodm);
1887
1888         if(deformedVerts)
1889                 MEM_freeN(deformedVerts);
1890 }
1891
1892 static void clear_mesh_caches(Object *ob)
1893 {
1894         Mesh *me= ob->data;
1895
1896                 /* also serves as signal to remake texspace */
1897         if (ob->bb) {
1898                 MEM_freeN(ob->bb);
1899                 ob->bb = NULL;
1900         }
1901         if (me->bb) {
1902                 MEM_freeN(me->bb);
1903                 me->bb = NULL;
1904         }
1905
1906         freedisplist(&ob->disp);
1907
1908         if (ob->derivedFinal) {
1909                 ob->derivedFinal->needsFree = 1;
1910                 ob->derivedFinal->release(ob->derivedFinal);
1911                 ob->derivedFinal= NULL;
1912         }
1913         if (ob->derivedDeform) {
1914                 ob->derivedDeform->needsFree = 1;
1915                 ob->derivedDeform->release(ob->derivedDeform);
1916                 ob->derivedDeform= NULL;
1917         }
1918
1919         if(ob->sculpt) {
1920                 object_sculpt_modifiers_changed(ob);
1921         }
1922 }
1923
1924 static void mesh_build_data(Scene *scene, Object *ob, CustomDataMask dataMask,
1925         int build_shapekey_layers)
1926 {
1927         Object *obact = scene->basact?scene->basact->object:NULL;
1928         int editing = paint_facesel_test(ob);
1929         /* weight paint and face select need original indices because of selection buffer drawing */
1930         int needMapping = (ob==obact) && (editing || (ob->mode & (OB_MODE_WEIGHT_PAINT|OB_MODE_VERTEX_PAINT|OB_MODE_TEXTURE_PAINT)));
1931
1932         clear_mesh_caches(ob);
1933
1934         mesh_calc_modifiers(scene, ob, NULL, &ob->derivedDeform,
1935                                                 &ob->derivedFinal, 0, 1,
1936                                                 needMapping, dataMask, -1, 1, build_shapekey_layers);
1937
1938         DM_set_object_boundbox (ob, ob->derivedFinal);
1939
1940         ob->derivedFinal->needsFree = 0;
1941         ob->derivedDeform->needsFree = 0;
1942         ob->lastDataMask = dataMask;
1943 }
1944
1945 static void editbmesh_build_data(Scene *scene, Object *obedit, BMEditMesh *em, CustomDataMask dataMask)
1946 {
1947         clear_mesh_caches(obedit);
1948
1949         if (em->derivedFinal) {
1950                 if (em->derivedFinal!=em->derivedCage) {
1951                         em->derivedFinal->needsFree = 1;
1952                         em->derivedFinal->release(em->derivedFinal);
1953                 }
1954                 em->derivedFinal = NULL;
1955         }
1956         if (em->derivedCage) {
1957                 em->derivedCage->needsFree = 1;
1958                 em->derivedCage->release(em->derivedCage);
1959                 em->derivedCage = NULL;
1960         }
1961
1962         editbmesh_calc_modifiers(scene, obedit, em, &em->derivedCage, &em->derivedFinal, dataMask);
1963         DM_set_object_boundbox (obedit, em->derivedFinal);
1964
1965         em->lastDataMask = dataMask;
1966         em->derivedFinal->needsFree = 0;
1967         em->derivedCage->needsFree = 0;
1968 }
1969
1970 void makeDerivedMesh(Scene *scene, Object *ob, BMEditMesh *em,
1971         CustomDataMask dataMask, int build_shapekey_layers)
1972 {
1973         if (em) {
1974                 editbmesh_build_data(scene, ob, em, dataMask);
1975         } else {
1976                 mesh_build_data(scene, ob, dataMask, build_shapekey_layers);
1977         }
1978 }
1979
1980 /***/
1981
1982 DerivedMesh *mesh_get_derived_final(Scene *scene, Object *ob, CustomDataMask dataMask)
1983 {
1984         /* if there's no derived mesh or the last data mask used doesn't include
1985          * the data we need, rebuild the derived mesh
1986          */
1987         if(!ob->derivedFinal || (dataMask & ob->lastDataMask) != dataMask)
1988                 mesh_build_data(scene, ob, dataMask, 0);
1989
1990         return ob->derivedFinal;
1991 }
1992
1993 DerivedMesh *mesh_get_derived_deform(Scene *scene, Object *ob, CustomDataMask dataMask)
1994 {
1995         /* if there's no derived mesh or the last data mask used doesn't include
1996          * the data we need, rebuild the derived mesh
1997          */
1998         if(!ob->derivedDeform || (dataMask & ob->lastDataMask) != dataMask)
1999                 mesh_build_data(scene, ob, dataMask, 0);
2000
2001         return ob->derivedDeform;
2002 }
2003
2004 DerivedMesh *mesh_create_derived_render(Scene *scene, Object *ob, CustomDataMask dataMask)
2005 {
2006         DerivedMesh *final;
2007         
2008         mesh_calc_modifiers(scene, ob, NULL, NULL, &final, 1, 1, 0, dataMask, -1, 0, 0);
2009
2010         return final;
2011 }
2012
2013 DerivedMesh *mesh_create_derived_index_render(Scene *scene, Object *ob, CustomDataMask dataMask, int index)
2014 {
2015         DerivedMesh *final;
2016         
2017         mesh_calc_modifiers(scene, ob, NULL, NULL, &final, 1, 1, 0, dataMask, index, 0, 0);
2018
2019         return final;
2020 }
2021
2022 DerivedMesh *mesh_create_derived_view(Scene *scene, Object *ob, CustomDataMask dataMask)
2023 {
2024         DerivedMesh *final;
2025
2026         mesh_calc_modifiers(scene, ob, NULL, NULL, &final, 0, 1, 0, dataMask, -1, 0, 0);
2027
2028         return final;
2029 }
2030
2031 DerivedMesh *mesh_create_derived_no_deform(Scene *scene, Object *ob, float (*vertCos)[3],
2032                                                                                    CustomDataMask dataMask)
2033 {
2034         DerivedMesh *final;
2035         
2036         mesh_calc_modifiers(scene, ob, vertCos, NULL, &final, 0, 0, 0, dataMask, -1, 0, 0);
2037
2038         return final;
2039 }
2040
2041 DerivedMesh *mesh_create_derived_no_virtual(Scene *scene, Object *ob, float (*vertCos)[3],
2042                                                                                         CustomDataMask dataMask)
2043 {
2044         DerivedMesh *final;
2045         
2046         mesh_calc_modifiers(scene, ob, vertCos, NULL, &final, 0, -1, 0, dataMask, -1, 0, 0);
2047
2048         return final;
2049 }
2050
2051 DerivedMesh *mesh_create_derived_physics(Scene *scene, Object *ob, float (*vertCos)[3],
2052                                                                                         CustomDataMask dataMask)
2053 {
2054         DerivedMesh *final;
2055         
2056         mesh_calc_modifiers(scene, ob, vertCos, NULL, &final, 0, -1, 1, dataMask, -1, 0, 0);
2057
2058         return final;
2059 }
2060
2061 DerivedMesh *mesh_create_derived_no_deform_render(Scene *scene, Object *ob,
2062                                                                                                   float (*vertCos)[3],
2063                                                                                                   CustomDataMask dataMask)
2064 {
2065         DerivedMesh *final;
2066
2067         mesh_calc_modifiers(scene, ob, vertCos, NULL, &final, 1, 0, 0, dataMask, -1, 0, 0);
2068
2069         return final;
2070 }
2071
2072 /***/
2073
2074 DerivedMesh *editbmesh_get_derived_cage_and_final(Scene *scene, Object *obedit, BMEditMesh *em, DerivedMesh **final_r,
2075                                                                                                  CustomDataMask dataMask)
2076 {
2077         /* if there's no derived mesh or the last data mask used doesn't include
2078          * the data we need, rebuild the derived mesh
2079          */
2080         if(!em->derivedCage ||
2081            (em->lastDataMask & dataMask) != dataMask)
2082                 editbmesh_build_data(scene, obedit, em, dataMask);
2083
2084         *final_r = em->derivedFinal;
2085         return em->derivedCage;
2086 }
2087
2088 DerivedMesh *editbmesh_get_derived_cage(Scene *scene, Object *obedit, BMEditMesh *em, CustomDataMask dataMask)
2089 {
2090         /* if there's no derived mesh or the last data mask used doesn't include
2091          * the data we need, rebuild the derived mesh
2092          */
2093         if(!em->derivedCage ||
2094            (em->lastDataMask & dataMask) != dataMask)
2095                 editbmesh_build_data(scene, obedit, em, dataMask);
2096
2097         return em->derivedCage;
2098 }
2099
2100 DerivedMesh *editbmesh_get_derived_base(Object *obedit, BMEditMesh *em)
2101 {
2102         return getEditDerivedBMesh(em, obedit, NULL);
2103 }
2104
2105
2106 /* ********* For those who don't grasp derived stuff! (ton) :) *************** */
2107
2108 static void make_vertexcosnos__mapFunc(void *userData, int index, float *co, float *no_f, short *no_s)
2109 {
2110         float *vec = userData;
2111         
2112         vec+= 6*index;
2113
2114         /* check if we've been here before (normal should not be 0) */
2115         if(vec[3] || vec[4] || vec[5]) return;
2116
2117         copy_v3_v3(vec, co);
2118         vec+= 3;
2119         if(no_f) {
2120                 copy_v3_v3(vec, no_f);
2121         }
2122         else {
2123                 normal_short_to_float_v3(vec, no_s);
2124         }
2125 }
2126
2127 /* always returns original amount me->totvert of vertices and normals, but fully deformed and subsurfered */
2128 /* this is needed for all code using vertexgroups (no subsurf support) */
2129 /* it stores the normals as floats, but they can still be scaled as shorts (32767 = unit) */
2130 /* in use now by vertex/weight paint and particle generating */
2131
2132 float *mesh_get_mapped_verts_nors(Scene *scene, Object *ob)
2133 {
2134         Mesh *me= ob->data;
2135         DerivedMesh *dm;
2136         float *vertexcosnos;
2137         
2138         /* lets prevent crashing... */
2139         if(ob->type!=OB_MESH || me->totvert==0)
2140                 return NULL;
2141         
2142         dm= mesh_get_derived_final(scene, ob, CD_MASK_BAREMESH|CD_MASK_ORIGINDEX);
2143         vertexcosnos= MEM_callocN(6*sizeof(float)*me->totvert, "vertexcosnos map");
2144         
2145         if(dm->foreachMappedVert) {
2146                 dm->foreachMappedVert(dm, make_vertexcosnos__mapFunc, vertexcosnos);
2147         }
2148         else {
2149                 float *fp= vertexcosnos;
2150                 int a;
2151                 
2152                 for(a=0; a< me->totvert; a++, fp+=6) {
2153                         dm->getVertCo(dm, a, fp);
2154                         dm->getVertNo(dm, a, fp+3);
2155                 }
2156         }
2157         
2158         dm->release(dm);
2159         return vertexcosnos;
2160 }
2161
2162 /* ******************* GLSL ******************** */
2163
2164 typedef struct
2165 {
2166         float * precomputedFaceNormals;
2167         MTFace * mtface;        // texture coordinates
2168         MFace * mface;          // indices
2169         MVert * mvert;          // vertices & normals
2170         float (*orco)[3];
2171         float (*tangent)[4];    // destination
2172         int numTessFaces;
2173
2174 } SGLSLMeshToTangent;
2175
2176 // interface
2177 #include "mikktspace.h"
2178
2179 static int GetNumFaces(const SMikkTSpaceContext * pContext)
2180 {
2181         SGLSLMeshToTangent * pMesh = (SGLSLMeshToTangent *) pContext->m_pUserData;
2182         return pMesh->numTessFaces;
2183 }
2184
2185 static int GetNumVertsOfFace(const SMikkTSpaceContext * pContext, const int face_num)
2186 {
2187         SGLSLMeshToTangent * pMesh = (SGLSLMeshToTangent *) pContext->m_pUserData;
2188         return pMesh->mface[face_num].v4!=0 ? 4 : 3;
2189 }
2190
2191 static void GetPosition(const SMikkTSpaceContext * pContext, float fPos[], const int face_num, const int vert_index)
2192 {
2193         //assert(vert_index>=0 && vert_index<4);
2194         SGLSLMeshToTangent * pMesh = (SGLSLMeshToTangent *) pContext->m_pUserData;
2195         const float *co= pMesh->mvert[(&pMesh->mface[face_num].v1)[vert_index]].co;
2196         copy_v3_v3(fPos, co);
2197 }
2198
2199 static void GetTextureCoordinate(const SMikkTSpaceContext * pContext, float fUV[], const int face_num, const int vert_index)
2200 {
2201         //assert(vert_index>=0 && vert_index<4);
2202         SGLSLMeshToTangent * pMesh = (SGLSLMeshToTangent *) pContext->m_pUserData;
2203
2204         if(pMesh->mtface!=NULL) {
2205                 float * uv = pMesh->mtface[face_num].uv[vert_index];
2206                 fUV[0]=uv[0]; fUV[1]=uv[1];
2207         }
2208         else {
2209                 const float *orco= pMesh->orco[(&pMesh->mface[face_num].v1)[vert_index]];
2210                 map_to_sphere( &fUV[0], &fUV[1], orco[0], orco[1], orco[2]);
2211         }
2212 }
2213
2214 static void GetNormal(const SMikkTSpaceContext * pContext, float fNorm[], const int face_num, const int vert_index)
2215 {
2216         //assert(vert_index>=0 && vert_index<4);
2217         SGLSLMeshToTangent * pMesh = (SGLSLMeshToTangent *) pContext->m_pUserData;
2218
2219         const int smoothnormal = (pMesh->mface[face_num].flag & ME_SMOOTH);
2220         if(!smoothnormal) {     // flat
2221                 if(pMesh->precomputedFaceNormals) {
2222                         copy_v3_v3(fNorm, &pMesh->precomputedFaceNormals[3*face_num]);
2223                 }
2224                 else {
2225                         MFace *mf= &pMesh->mface[face_num];
2226                         float *p0= pMesh->mvert[mf->v1].co;
2227                         float *p1= pMesh->mvert[mf->v2].co;
2228                         float *p2= pMesh->mvert[mf->v3].co;
2229
2230                         if(mf->v4) {
2231                                 float *p3 = pMesh->mvert[mf->v4].co;
2232                                 normal_quad_v3(fNorm, p0, p1, p2, p3);
2233                         }
2234                         else {
2235                                 normal_tri_v3(fNorm, p0, p1, p2);
2236                         }
2237                 }
2238         }
2239         else {
2240                 const short *no= pMesh->mvert[(&pMesh->mface[face_num].v1)[vert_index]].no;
2241                 normal_short_to_float_v3(fNorm, no);
2242         }
2243 }
2244 static void SetTSpace(const SMikkTSpaceContext * pContext, const float fvTangent[], const float fSign, const int face_num, const int iVert)
2245 {
2246         //assert(vert_index>=0 && vert_index<4);
2247         SGLSLMeshToTangent * pMesh = (SGLSLMeshToTangent *) pContext->m_pUserData;
2248         float * pRes = pMesh->tangent[4*face_num+iVert];
2249         copy_v3_v3(pRes, fvTangent);
2250         pRes[3]=fSign;
2251 }
2252
2253
2254 void DM_add_tangent_layer(DerivedMesh *dm)
2255 {
2256         /* mesh vars */
2257         MTFace *mtface, *tf;
2258         MFace *mface, *mf;
2259         MVert *mvert, *v1, *v2, *v3, *v4;
2260         MemArena *arena= NULL;
2261         VertexTangent **vtangents= NULL;
2262         float (*orco)[3]= NULL, (*tangent)[4];
2263         float *uv1, *uv2, *uv3, *uv4, *vtang;
2264         float fno[3], tang[3], uv[4][2];
2265         int i, j, len, mf_vi[4], totvert, totface, iCalcNewMethod;
2266         float *nors;
2267
2268         if(CustomData_get_layer_index(&dm->faceData, CD_TANGENT) != -1)
2269                 return;
2270
2271         nors = dm->getTessFaceDataArray(dm, CD_NORMAL);
2272
2273         /* check we have all the needed layers */
2274         totvert= dm->getNumVerts(dm);
2275         totface= dm->getNumTessFaces(dm);
2276
2277         mvert= dm->getVertArray(dm);
2278         mface= dm->getTessFaceArray(dm);
2279         mtface= dm->getTessFaceDataArray(dm, CD_MTFACE);
2280
2281         if(!mtface) {
2282                 orco= dm->getVertDataArray(dm, CD_ORCO);
2283                 if(!orco)
2284                         return;
2285         }
2286         
2287         /* create tangent layer */
2288         DM_add_tessface_layer(dm, CD_TANGENT, CD_CALLOC, NULL);
2289         tangent= DM_get_tessface_data_layer(dm, CD_TANGENT);
2290         
2291         /* allocate some space */
2292         arena= BLI_memarena_new(BLI_MEMARENA_STD_BUFSIZE, "tangent layer arena");
2293         BLI_memarena_use_calloc(arena);
2294         vtangents= MEM_callocN(sizeof(VertexTangent*)*totvert, "VertexTangent");
2295
2296         // new computation method
2297         iCalcNewMethod = 1;
2298         if(iCalcNewMethod != 0) {
2299                 SGLSLMeshToTangent mesh2tangent= {0};
2300                 SMikkTSpaceContext sContext= {0};
2301                 SMikkTSpaceInterface sInterface= {0};
2302
2303                 mesh2tangent.precomputedFaceNormals = nors;
2304                 mesh2tangent.mtface = mtface;
2305                 mesh2tangent.mface = mface;
2306                 mesh2tangent.mvert = mvert;
2307                 mesh2tangent.orco = orco;
2308                 mesh2tangent.tangent = tangent;
2309                 mesh2tangent.numTessFaces = totface;
2310
2311                 sContext.m_pUserData = &mesh2tangent;
2312                 sContext.m_pInterface = &sInterface;
2313                 sInterface.m_getNumFaces = GetNumFaces;
2314                 sInterface.m_getNumVerticesOfFace = GetNumVertsOfFace;
2315                 sInterface.m_getPosition = GetPosition;
2316                 sInterface.m_getTexCoord = GetTextureCoordinate;
2317                 sInterface.m_getNormal = GetNormal;
2318                 sInterface.m_setTSpaceBasic = SetTSpace;
2319
2320                 // 0 if failed
2321                 iCalcNewMethod = genTangSpaceDefault(&sContext);
2322         }
2323
2324         if(!iCalcNewMethod) {
2325                 /* sum tangents at connected vertices */
2326                 for(i=0, tf=mtface, mf=mface; i < totface; mf++, tf++, i++) {
2327                         v1= &mvert[mf->v1];
2328                         v2= &mvert[mf->v2];
2329                         v3= &mvert[mf->v3];
2330
2331                         if (mf->v4) {
2332                                 v4= &mvert[mf->v4];
2333                                 normal_quad_v3( fno,v4->co, v3->co, v2->co, v1->co);
2334                         }
2335                         else {
2336                                 v4= NULL;
2337                                 normal_tri_v3( fno,v3->co, v2->co, v1->co);
2338                         }
2339                 
2340                         if(mtface) {
2341                                 uv1= tf->uv[0];
2342                                 uv2= tf->uv[1];
2343                                 uv3= tf->uv[2];
2344                                 uv4= tf->uv[3];
2345                         }
2346                         else {
2347                                 uv1= uv[0]; uv2= uv[1]; uv3= uv[2]; uv4= uv[3];
2348                                 map_to_sphere( &uv[0][0], &uv[0][1],orco[mf->v1][0], orco[mf->v1][1], orco[mf->v1][2]);
2349                                 map_to_sphere( &uv[1][0], &uv[1][1],orco[mf->v2][0], orco[mf->v2][1], orco[mf->v2][2]);
2350                                 map_to_sphere( &uv[2][0], &uv[2][1],orco[mf->v3][0], orco[mf->v3][1], orco[mf->v3][2]);
2351                                 if(v4)
2352                                         map_to_sphere( &uv[3][0], &uv[3][1],orco[mf->v4][0], orco[mf->v4][1], orco[mf->v4][2]);
2353                         }
2354                 
2355                         tangent_from_uv(uv1, uv2, uv3, v1->co, v2->co, v3->co, fno, tang);
2356                         sum_or_add_vertex_tangent(arena, &vtangents[mf->v1], tang, uv1);
2357                         sum_or_add_vertex_tangent(arena, &vtangents[mf->v2], tang, uv2);
2358                         sum_or_add_vertex_tangent(arena, &vtangents[mf->v3], tang, uv3);
2359                 
2360                         if(mf->v4) {
2361                                 v4= &mvert[mf->v4];
2362                         
2363                                 tangent_from_uv(uv1, uv3, uv4, v1->co, v3->co, v4->co, fno, tang);
2364                                 sum_or_add_vertex_tangent(arena, &vtangents[mf->v1], tang, uv1);
2365                                 sum_or_add_vertex_tangent(arena, &vtangents[mf->v3], tang, uv3);
2366                                 sum_or_add_vertex_tangent(arena, &vtangents[mf->v4], tang, uv4);
2367                         }
2368                 }
2369         
2370                 /* write tangent to layer */
2371                 for(i=0, tf=mtface, mf=mface; i < totface; mf++, tf++, i++, tangent+=4) {
2372                         len= (mf->v4)? 4 : 3; 
2373
2374                         if(mtface == NULL) {
2375                                 map_to_sphere( &uv[0][0], &uv[0][1],orco[mf->v1][0], orco[mf->v1][1], orco[mf->v1][2]);
2376                                 map_to_sphere( &uv[1][0], &uv[1][1],orco[mf->v2][0], orco[mf->v2][1], orco[mf->v2][2]);
2377                                 map_to_sphere( &uv[2][0], &uv[2][1],orco[mf->v3][0], orco[mf->v3][1], orco[mf->v3][2]);
2378                                 if(len==4)
2379                                         map_to_sphere( &uv[3][0], &uv[3][1],orco[mf->v4][0], orco[mf->v4][1], orco[mf->v4][2]);
2380                         }
2381                 
2382                         mf_vi[0]= mf->v1;
2383                         mf_vi[1]= mf->v2;
2384                         mf_vi[2]= mf->v3;
2385                         mf_vi[3]= mf->v4;
2386                 
2387                         for(j=0; j<len; j++) {
2388                                 vtang= find_vertex_tangent(vtangents[mf_vi[j]], mtface ? tf->uv[j] : uv[j]);
2389                                 normalize_v3_v3(tangent[j], vtang);
2390                                 ((float *) tangent[j])[3]=1.0f;
2391                         }
2392                 }
2393         }
2394         
2395         BLI_memarena_free(arena);
2396         MEM_freeN(vtangents);
2397 }
2398
2399 void DM_calc_auto_bump_scale(DerivedMesh *dm)
2400 {
2401         /* int totvert= dm->getNumVerts(dm); */ /* UNUSED */
2402         int totface= dm->getNumTessFaces(dm);
2403
2404         MVert * mvert = dm->getVertArray(dm);
2405         MFace * mface = dm->getTessFaceArray(dm);
2406         MTFace * mtface = dm->getTessFaceDataArray(dm, CD_MTFACE);
2407
2408         if(mtface)
2409         {
2410                 double dsum = 0.0;
2411                 int nr_accumulated = 0;
2412                 int f;
2413
2414                 for ( f=0; f<totface; f++ )
2415                 {
2416                         {
2417                                 float * verts[4], * tex_coords[4];
2418                                 const int nr_verts = mface[f].v4!=0 ? 4 : 3;
2419                                 int i, is_degenerate;
2420
2421                                 verts[0]=mvert[mface[f].v1].co; verts[1]=mvert[mface[f].v2].co; verts[2]=mvert[mface[f].v3].co;
2422                                 tex_coords[0]=mtface[f].uv[0]; tex_coords[1]=mtface[f].uv[1]; tex_coords[2]=mtface[f].uv[2];
2423                                 if(nr_verts==4)
2424                                 {
2425                                         verts[3]=mvert[mface[f].v4].co;
2426                                         tex_coords[3]=mtface[f].uv[3];
2427                                 }
2428
2429                                 // discard degenerate faces
2430                                 is_degenerate = 0;
2431                                 if(     equals_v3v3(verts[0], verts[1]) || equals_v3v3(verts[0], verts[2]) || equals_v3v3(verts[1], verts[2]) ||
2432                                         equals_v2v2(tex_coords[0], tex_coords[1]) || equals_v2v2(tex_coords[0], tex_coords[2]) || equals_v2v2(tex_coords[1], tex_coords[2]) )
2433                                 {
2434                                         is_degenerate = 1;
2435                                 }
2436
2437                                 // verify last vertex as well if this is a quad
2438                                 if ( is_degenerate==0 && nr_verts==4 )
2439                                 {
2440                                         if(     equals_v3v3(verts[3], verts[0]) || equals_v3v3(verts[3], verts[1]) || equals_v3v3(verts[3], verts[2]) ||
2441                                                 equals_v2v2(tex_coords[3], tex_coords[0]) || equals_v2v2(tex_coords[3], tex_coords[1]) || equals_v2v2(tex_coords[3], tex_coords[2]) )
2442                                         {
2443                                                 is_degenerate = 1;
2444                                         }
2445
2446                                         // verify the winding is consistent
2447                                         if ( is_degenerate==0 )
2448                                         {
2449                                                 float prev_edge[2];
2450                                                 int is_signed = 0;
2451                                                 sub_v2_v2v2(prev_edge, tex_coords[0], tex_coords[3]);
2452
2453                                                 i = 0;
2454                                                 while ( is_degenerate==0 && i<4 )
2455                                                 {
2456                                                         float cur_edge[2], signed_area;
2457                                                         sub_v2_v2v2(cur_edge, tex_coords[(i+1)&0x3], tex_coords[i]);
2458                                                         signed_area = prev_edge[0]*cur_edge[1] - prev_edge[1]*cur_edge[0];
2459                                                         if ( i==0 ) is_signed = signed_area<0.0f ? 1 : 0;
2460                                                         else if((is_signed!=0)!=(signed_area<0.0f)) is_degenerate=1;
2461
2462                                                         if ( is_degenerate==0 )
2463                                                         {
2464                                                                 copy_v2_v2(prev_edge, cur_edge);
2465                                                                 ++i;
2466                                                         }
2467                                                 }
2468                                         }
2469                                 }
2470
2471                                 // proceed if not a degenerate face
2472                                 if ( is_degenerate==0 )
2473                                 {
2474                                         int nr_tris_to_pile=0;
2475                                         // quads split at shortest diagonal
2476                                         int offs = 0;           // initial triangulation is 0,1,2 and 0, 2, 3
2477                                         if ( nr_verts==4 )
2478                                         {
2479                                                 float pos_len_diag0, pos_len_diag1;
2480                                                 float vtmp[3];
2481                                                 sub_v3_v3v3(vtmp, verts[2], verts[0]);
2482                                                 pos_len_diag0 = dot_v3v3(vtmp, vtmp);
2483                                                 sub_v3_v3v3(vtmp, verts[3], verts[1]);
2484                                                 pos_len_diag1 = dot_v3v3(vtmp, vtmp);
2485
2486                                                 if(pos_len_diag1<pos_len_diag0)
2487                                                         offs=1;         // alter split
2488                                                 else if(pos_len_diag0==pos_len_diag1)           // do UV check instead
2489                                                 {
2490                                                         float tex_len_diag0, tex_len_diag1;
2491
2492                                                         sub_v2_v2v2(vtmp, tex_coords[2], tex_coords[0]);
2493                                                         tex_len_diag0 = dot_v2v2(vtmp, vtmp);
2494                                                         sub_v2_v2v2(vtmp, tex_coords[3], tex_coords[1]);
2495                                                         tex_len_diag1 = dot_v2v2(vtmp, vtmp);
2496
2497                                                         if(tex_len_diag1<tex_len_diag0)
2498                                                         {
2499                                                                 offs=1;         // alter split
2500                                                         }
2501                                                 }
2502                                         }
2503                                         nr_tris_to_pile = nr_verts-2 ;
2504                                         if ( nr_tris_to_pile==1 || nr_tris_to_pile==2 )
2505                                         {
2506                                                 const int indices[] = {offs+0, offs+1, offs+2, offs+0, offs+2, (offs+3)&0x3 };
2507                                                 int t;
2508                                                 for ( t=0; t<nr_tris_to_pile; t++ )
2509                                                 {
2510                                                         float f2x_area_uv;
2511                                                         float * p0 = verts[indices[t*3+0]];
2512                                                         float * p1 = verts[indices[t*3+1]];
2513                                                         float * p2 = verts[indices[t*3+2]];
2514
2515                                                         float edge_t0[2], edge_t1[2];
2516                                                         sub_v2_v2v2(edge_t0, tex_coords[indices[t*3+1]], tex_coords[indices[t*3+0]]);
2517                                                         sub_v2_v2v2(edge_t1, tex_coords[indices[t*3+2]], tex_coords[indices[t*3+0]]);
2518
2519                                                         f2x_area_uv = fabsf(edge_t0[0]*edge_t1[1] - edge_t0[1]*edge_t1[0]);
2520                                                         if ( f2x_area_uv>FLT_EPSILON )
2521                                                         {
2522                                                                 float norm[3], v0[3], v1[3], f2x_surf_area, fsurf_ratio;
2523                                                                 sub_v3_v3v3(v0, p1, p0);
2524                                                                 sub_v3_v3v3(v1, p2, p0);
2525                                                                 cross_v3_v3v3(norm, v0, v1);
2526
2527                                                                 f2x_surf_area = len_v3(norm);
2528                                                                 fsurf_ratio = f2x_surf_area/f2x_area_uv;        // tri area divided by texture area
2529
2530                                                                 ++nr_accumulated;
2531                                                                 dsum += (double)(fsurf_ratio);
2532                                                         }
2533                                                 }
2534                                         }
2535                                 }
2536                         }
2537                 }
2538
2539                 // finalize
2540                 {
2541                         const float avg_area_ratio = (nr_accumulated>0) ? ((float)(dsum / nr_accumulated)) : 1.0f;
2542                         const float use_as_render_bump_scale = sqrtf(avg_area_ratio);           // use width of average surface ratio as your bump scale
2543                         dm->auto_bump_scale = use_as_render_bump_scale;
2544                 }
2545         }
2546         else
2547         {
2548                 dm->auto_bump_scale = 1.0f;
2549         }
2550 }
2551
2552 void DM_vertex_attributes_from_gpu(DerivedMesh *dm, GPUVertexAttribs *gattribs, DMVertexAttribs *attribs)
2553 {
2554         CustomData *vdata, *fdata, *tfdata = NULL;
2555         int a, b, layer;
2556
2557         /* From the layers requested by the GLSL shader, figure out which ones are
2558          * actually available for this derivedmesh, and retrieve the pointers */
2559
2560         memset(attribs, 0, sizeof(DMVertexAttribs));
2561
2562         vdata = &dm->vertData;
2563         fdata = tfdata = dm->getTessFaceDataLayout(dm);
2564         
2565         /* calc auto bump scale if necessary */
2566         if(dm->auto_bump_scale<=0.0f)
2567                 DM_calc_auto_bump_scale(dm);
2568
2569         /* add a tangent layer if necessary */
2570         for(b = 0; b < gattribs->totlayer; b++)
2571                 if(gattribs->layer[b].type == CD_TANGENT)
2572                         if(CustomData_get_layer_index(fdata, CD_TANGENT) == -1)
2573                                 DM_add_tangent_layer(dm);
2574
2575         for(b = 0; b < gattribs->totlayer; b++) {
2576                 if(gattribs->layer[b].type == CD_MTFACE) {
2577                         /* uv coordinates */
2578                         if(gattribs->layer[b].name[0])
2579                                 layer = CustomData_get_named_layer_index(tfdata, CD_MTFACE,
2580                                         gattribs->layer[b].name);
2581                         else
2582                                 layer = CustomData_get_active_layer_index(tfdata, CD_MTFACE);
2583
2584                         if(layer != -1) {
2585                                 a = attribs->tottface++;
2586
2587                                 attribs->tface[a].array = tfdata->layers[layer].data;
2588                                 attribs->tface[a].emOffset = tfdata->layers[layer].offset;
2589                                 attribs->tface[a].glIndex = gattribs->layer[b].glindex;
2590                                 /* attribs->tface[a].glTexco = gattribs->layer[b].gltexco; */ /* BMESH_TODO, trunk has this but not bmesh, need to investigate whats going on here - campbell */
2591                         }
2592                         /* BMESH ONLY, may need to get this working?, otherwise remove */
2593                         /* else {
2594                                 int player;
2595                                 CustomData *pdata = dm->getPolyDataLayout(dm);
2596                                 
2597                                 if(gattribs->layer[b].name[0])
2598                                         player = CustomData_get_named_layer_index(pdata, CD_MTEXPOLY,
2599                                                 gattribs->layer[b].name);
2600                                 else
2601                                         player = CustomData_get_active_layer_index(pdata, CD_MTEXPOLY);
2602                                 
2603                                 if (player != -1) {
2604                                         a = attribs->tottface++;
2605         
2606                                         attribs->tface[a].array = NULL;
2607                                         attribs->tface[a].emOffset = pdata->layers[layer].offset;
2608                                         attribs->tface[a].glIndex = gattribs->layer[b].glindex;
2609                                         attribs->tface[a].glTexco = gattribs->layer[b].gltexco;
2610                                         
2611                                 }
2612                         }
2613                         */
2614                 }
2615                 else if(gattribs->layer[b].type == CD_MCOL) {
2616                         /* vertex colors */
2617                         if(gattribs->layer[b].name[0])
2618                                 layer = CustomData_get_named_layer_index(tfdata, CD_MCOL,
2619                                         gattribs->layer[b].name);
2620                         else
2621                                 layer = CustomData_get_active_layer_index(tfdata, CD_MCOL);
2622
2623                         if(layer != -1) {
2624                                 a = attribs->totmcol++;
2625
2626                                 attribs->mcol[a].array = tfdata->layers[layer].data;
2627                                 attribs->mcol[a].emOffset = tfdata->layers[layer].offset;
2628                                 attribs->mcol[a].glIndex = gattribs->layer[b].glindex;
2629                         }
2630                 }
2631                 else if(gattribs->layer[b].type == CD_TANGENT) {
2632                         /* tangents */
2633                         layer = CustomData_get_layer_index(fdata, CD_TANGENT);
2634
2635                         if(layer != -1) {
2636                                 attribs->tottang = 1;
2637
2638                                 attribs->tang.array = fdata->layers[layer].data;
2639                                 attribs->tang.emOffset = fdata->layers[layer].offset;
2640                                 attribs->tang.glIndex = gattribs->layer[b].glindex;
2641                         }
2642                 }
2643                 else if(gattribs->layer[b].type == CD_ORCO) {
2644                         /* original coordinates */
2645                         layer = CustomData_get_layer_index(vdata, CD_ORCO);
2646
2647                         if(layer != -1) {
2648                                 attribs->totorco = 1;
2649
2650                                 attribs->orco.array = vdata->layers[layer].data;
2651                                 attribs->orco.emOffset = vdata->layers[layer].offset;
2652                                 attribs->orco.glIndex = gattribs->layer[b].glindex;
2653                                 attribs->orco.glTexco = gattribs->layer[b].gltexco;
2654                         }
2655                 }
2656         }
2657 }
2658
2659 /* Set object's bounding box based on DerivedMesh min/max data */
2660 void DM_set_object_boundbox(Object *ob, DerivedMesh *dm)
2661 {
2662         float min[3], max[3];
2663
2664         INIT_MINMAX(min, max);
2665
2666         dm->getMinMax(dm, min, max);
2667
2668         if(!ob->bb)
2669                 ob->bb= MEM_callocN(sizeof(BoundBox), "DM-BoundBox");
2670
2671         boundbox_set_from_min_max(ob->bb, min, max);
2672 }
2673
2674 /* --- NAVMESH (begin) --- */
2675 #ifdef WITH_GAMEENGINE
2676
2677 BM_INLINE int navmesh_bit(int a, int b)
2678 {
2679         return (a & (1 << b)) >> b;
2680 }
2681
2682 BM_INLINE void navmesh_intToCol(int i, float col[3])
2683 {
2684         int     r = navmesh_bit(i, 0) + navmesh_bit(i, 3) * 2 + 1;
2685         int     g = navmesh_bit(i, 1) + navmesh_bit(i, 4) * 2 + 1;
2686         int     b = navmesh_bit(i, 2) + navmesh_bit(i, 5) * 2 + 1;
2687         col[0] = 1 - r*63.0f/255.0f;
2688         col[1] = 1 - g*63.0f/255.0f;
2689         col[2] = 1 - b*63.0f/255.0f;
2690 }
2691
2692 static void navmesh_drawColored(DerivedMesh *dm)
2693 {
2694         int a, glmode;
2695         MVert *mvert = (MVert *)CustomData_get_layer(&dm->vertData, CD_MVERT);
2696         MFace *mface = (MFace *)CustomData_get_layer(&dm->faceData, CD_MFACE);
2697         int *polygonIdx = (int *)CustomData_get_layer(&dm->faceData, CD_RECAST);
2698         float col[3];
2699
2700         if (!polygonIdx)
2701                 return;
2702
2703         /*
2704         //UI_ThemeColor(TH_WIRE);
2705         glDisable(GL_LIGHTING);
2706         glLineWidth(2.0);
2707         dm->drawEdges(dm, 0, 1);
2708         glLineWidth(1.0);
2709         glEnable(GL_LIGHTING);*/
2710
2711         glDisable(GL_LIGHTING);
2712         /*  if(GPU_buffer_legacy(dm) ) */ { /* TODO - VBO draw code, not high priority - campbell */
2713                 DEBUG_VBO( "Using legacy code. drawNavMeshColored\n" );
2714                 //glShadeModel(GL_SMOOTH);
2715                 glBegin(glmode = GL_QUADS);
2716                 for(a = 0; a < dm->numTessFaceData; a++, mface++) {
2717                         int new_glmode = mface->v4?GL_QUADS:GL_TRIANGLES;
2718                         int pi = polygonIdx[a];
2719                         if (pi <= 0) {
2720                                 zero_v3(col);
2721                         }
2722                         else {
2723                                 navmesh_intToCol(pi, col);
2724                         }
2725
2726                         if(new_glmode != glmode) {
2727                                 glEnd();
2728                                 glBegin(glmode = new_glmode);
2729                         }
2730                         glColor3fv(col);
2731                         glVertex3fv(mvert[mface->v1].co);
2732                         glVertex3fv(mvert[mface->v2].co);
2733                         glVertex3fv(mvert[mface->v3].co);
2734                         if(mface->v4) {
2735                                 glVertex3fv(mvert[mface->v4].co);
2736                         }
2737                 }
2738                 glEnd();
2739         }
2740         glEnable(GL_LIGHTING);
2741 }
2742
2743 static void navmesh_DM_drawFacesTex(DerivedMesh *dm,
2744                         int (*setDrawOptions)(MTFace *tface, int has_mcol, int matnr),
2745                         int (*compareDrawOptions)(void *userData, int cur_index, int next_index),
2746                         void *userData)
2747 {
2748         (void) setDrawOptions;
2749         (void) compareDrawOptions;
2750         (void) userData;
2751
2752         navmesh_drawColored(dm);
2753 }
2754
2755 static void navmesh_DM_drawFacesSolid(DerivedMesh *dm,
2756                                       float (*partial_redraw_planes)[4],
2757                                       int UNUSED(fast), int (*setMaterial)(int, void *attribs))
2758 {
2759         (void) partial_redraw_planes;
2760         (void) setMaterial;
2761
2762         //drawFacesSolid_original(dm, partial_redraw_planes, fast, setMaterial);
2763         navmesh_drawColored(dm);
2764 }
2765
2766 static DerivedMesh *navmesh_dm_createNavMeshForVisualization(DerivedMesh *dm)
2767 {
2768         DerivedMesh *result;
2769         int maxFaces = dm->getNumPolys(dm);
2770         int *recastData;
2771         int vertsPerPoly=0, nverts=0, ndtris=0, npolys=0;
2772         float* verts=NULL;
2773         unsigned short *dtris=NULL, *dmeshes=NULL, *polys=NULL;
2774         int *dtrisToPolysMap=NULL, *dtrisToTrisMap=NULL, *trisToFacesMap=NULL;
2775         int res;
2776
2777         result = CDDM_copy(dm, 0);
2778         if (!CustomData_has_layer(&result->faceData, CD_RECAST)) {
2779                 int *sourceRecastData = (int*)CustomData_get_layer(&dm->faceData, CD_RECAST);
2780                 if (sourceRecastData) {
2781                         CustomData_add_layer_named(&result->faceData, CD_RECAST, CD_DUPLICATE,
2782                                                    sourceRecastData, maxFaces, "recastData");
2783                 }
2784         }
2785         recastData = (int*)CustomData_get_layer(&result->faceData, CD_RECAST);
2786
2787         /* note: This is not good design! - really should not be doing this */
2788         result->drawFacesTex =  navmesh_DM_drawFacesTex;
2789         result->drawFacesSolid = navmesh_DM_drawFacesSolid;
2790
2791
2792         /* process mesh */
2793         res  = buildNavMeshDataByDerivedMesh(dm, &vertsPerPoly, &nverts, &verts, &ndtris, &dtris,
2794                                              &npolys, &dmeshes, &polys, &dtrisToPolysMap, &dtrisToTrisMap,
2795                                              &trisToFacesMap);
2796         if (res) {
2797                 size_t polyIdx;
2798
2799                 /* invalidate concave polygon */
2800                 for (polyIdx=0; polyIdx<(size_t)npolys; polyIdx++) {
2801                         unsigned short* poly = &polys[polyIdx*2*vertsPerPoly];
2802                         if (!polyIsConvex(poly, vertsPerPoly, verts)) {
2803                                 /* set negative polygon idx to all faces */
2804                                 unsigned short *dmesh = &dmeshes[4*polyIdx];
2805                                 unsigned short tbase = dmesh[2];
2806                                 unsigned short tnum = dmesh[3];
2807                                 unsigned short ti;
2808
2809                                 for (ti=0; ti<tnum; ti++) {
2810                                         unsigned short triidx = dtrisToTrisMap[tbase+ti];
2811                                         unsigned short faceidx = trisToFacesMap[triidx];
2812                                         if (recastData[faceidx] > 0) {
2813                                                 recastData[faceidx] = -recastData[faceidx];
2814                                         }
2815                                 }
2816                         }
2817                 }
2818         }
2819         else {
2820                 printf("Error during creation polygon infos\n");
2821         }
2822
2823         /* clean up */
2824         if (verts!=NULL)
2825                 MEM_freeN(verts);
2826         if (dtris!=NULL)
2827                 MEM_freeN(dtris);
2828         if (dmeshes!=NULL)
2829                 MEM_freeN(dmeshes);
2830         if (polys!=NULL)
2831                 MEM_freeN(polys);
2832         if (dtrisToPolysMap!=NULL)
2833                 MEM_freeN(dtrisToPolysMap);
2834         if (dtrisToTrisMap!=NULL)
2835                 MEM_freeN(dtrisToTrisMap);
2836         if (trisToFacesMap!=NULL)
2837                 MEM_freeN(trisToFacesMap);
2838
2839         return result;
2840 }
2841
2842 #endif /* WITH_GAMEENGINE */
2843
2844 /* --- NAVMESH (end) --- */
2845
2846
2847 /* derivedmesh info printing function,
2848  * to help track down differences DM output */
2849
2850 #ifndef NDEBUG
2851 #include "BLI_dynstr.h"
2852
2853 static void dm_debug_info_layers(DynStr *dynstr, DerivedMesh *dm, void *(*getElemDataArray)(DerivedMesh *, int))
2854 {
2855         int type;
2856
2857         for (type = 0; type < CD_NUMTYPES; type++) {
2858                 /* note: doesnt account for multiple layers */
2859                 void *pt = getElemDataArray(dm, type);
2860                 if (pt) {
2861                         const char *name = CustomData_layertype_name(type);
2862                         const int size = CustomData_sizeof(type);
2863                         const char *structname;
2864                         int structnum;
2865                         CustomData_file_write_info(type, &structname, &structnum);
2866                         BLI_dynstr_appendf(dynstr,
2867                                            "        dict(name='%s', struct='%s', type=%d, ptr='%p', elem=%d, length=%d),\n",
2868                                                            name, structname, type, (void *)pt, size, (int)(MEM_allocN_len(pt) / size));
2869                 }
2870         }
2871 }
2872
2873 char *DM_debug_info(DerivedMesh *dm)
2874 {
2875         DynStr *dynstr= BLI_dynstr_new();
2876         char *ret;
2877         const char *tstr;
2878
2879         BLI_dynstr_appendf(dynstr, "{\n");
2880         BLI_dynstr_appendf(dynstr, "    'ptr': '%p',\n", (void *)dm);
2881         switch (dm->type) {
2882                 case DM_TYPE_CDDM:     tstr = "DM_TYPE_CDDM";     break;
2883                 case DM_TYPE_EDITBMESH: tstr = "DM_TYPE_EDITMESH";  break;
2884                 case DM_TYPE_CCGDM:    tstr = "DM_TYPE_CCGDM";     break;
2885                 default:               tstr = "UNKNOWN";           break;
2886         }
2887         BLI_dynstr_appendf(dynstr, "    'type': '%s',\n", tstr);
2888         BLI_dynstr_appendf(dynstr, "    'numVertData': %d,\n", dm->numVertData);
2889         BLI_dynstr_appendf(dynstr, "    'numEdgeData': %d,\n", dm->numEdgeData);
2890         BLI_dynstr_appendf(dynstr, "    'numTessFaceData': %d,\n", dm->numTessFaceData);
2891         BLI_dynstr_appendf(dynstr, "    'numPolyData': %d,\n", dm->numPolyData);
2892         BLI_dynstr_appendf(dynstr, "    'deformedOnly': %d,\n", dm->deformedOnly);
2893
2894         BLI_dynstr_appendf(dynstr, "    'vertexLayers': (\n");
2895         dm_debug_info_layers(dynstr, dm, dm->getVertDataArray);
2896         BLI_dynstr_appendf(dynstr, "    ),\n");
2897
2898         BLI_dynstr_appendf(dynstr, "    'edgeLayers': (\n");
2899         dm_debug_info_layers(dynstr, dm, dm->getEdgeDataArray);
2900         BLI_dynstr_appendf(dynstr, "    ),\n");
2901
2902         BLI_dynstr_appendf(dynstr, "    'tessFaceLayers': (\n");
2903         dm_debug_info_layers(dynstr, dm, dm->getTessFaceDataArray);
2904         BLI_dynstr_appendf(dynstr, "    ),\n");
2905
2906         BLI_dynstr_appendf(dynstr, "    'PolyLayers': (\n");
2907         dm_debug_info_layers(dynstr, dm, DM_get_poly_data_layer);
2908         BLI_dynstr_appendf(dynstr, "    ),\n");
2909
2910         BLI_dynstr_appendf(dynstr, "}\n");
2911
2912         ret = BLI_dynstr_get_cstring(dynstr);
2913         BLI_dynstr_free(dynstr);
2914         return ret;
2915 }
2916
2917 void DM_debug_print(DerivedMesh *dm)
2918 {
2919         char *str = DM_debug_info(dm);
2920         printf("%s", str);
2921         fflush(stdout);
2922         MEM_freeN(str);
2923 }
2924
2925 #endif /* NDEBUG */