svn merge -r41751:41779 ^/trunk/blender
[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
68 #ifdef WITH_GAMEENGINE
69 #include "BKE_navmesh_conversion.h"
70 static DerivedMesh *navmesh_dm_createNavMeshForVisualization(DerivedMesh *dm);
71 #endif
72
73 #include "BLO_sys_types.h" // for intptr_t support
74
75 #include "GL/glew.h"
76
77 #include "GPU_buffers.h"
78 #include "GPU_draw.h"
79 #include "GPU_extensions.h"
80 #include "GPU_material.h"
81
82 extern GLubyte stipple_quarttone[128]; /* glutil.c, bad level data */
83
84 static void add_shapekey_layers(DerivedMesh *dm, Mesh *me, Object *ob);
85 static void shapekey_layers_to_keyblocks(DerivedMesh *dm, Mesh *me, int actshape_uid);
86
87 ///////////////////////////////////
88 ///////////////////////////////////
89
90 static MVert *dm_getVertArray(DerivedMesh *dm)
91 {
92         MVert *mvert = CustomData_get_layer(&dm->vertData, CD_MVERT);
93
94         if (!mvert) {
95                 mvert = CustomData_add_layer(&dm->vertData, CD_MVERT, CD_CALLOC, NULL,
96                         dm->getNumVerts(dm));
97                 CustomData_set_layer_flag(&dm->vertData, CD_MVERT, CD_FLAG_TEMPORARY);
98                 dm->copyVertArray(dm, mvert);
99         }
100
101         return mvert;
102 }
103
104 static MEdge *dm_getEdgeArray(DerivedMesh *dm)
105 {
106         MEdge *medge = CustomData_get_layer(&dm->edgeData, CD_MEDGE);
107
108         if (!medge) {
109                 medge = CustomData_add_layer(&dm->edgeData, CD_MEDGE, CD_CALLOC, NULL,
110                         dm->getNumEdges(dm));
111                 CustomData_set_layer_flag(&dm->edgeData, CD_MEDGE, CD_FLAG_TEMPORARY);
112                 dm->copyEdgeArray(dm, medge);
113         }
114
115         return medge;
116 }
117
118 static MFace *dm_getFaceArray(DerivedMesh *dm)
119 {
120         MFace *mface = CustomData_get_layer(&dm->faceData, CD_MFACE);
121
122         if (!mface) {
123                 mface = CustomData_add_layer(&dm->faceData, CD_MFACE, CD_CALLOC, NULL,
124                         dm->getNumTessFaces(dm));
125                 CustomData_set_layer_flag(&dm->faceData, CD_MFACE, CD_FLAG_TEMPORARY);
126                 dm->copyTessFaceArray(dm, mface);
127         }
128
129         return mface;
130 }
131
132 static MLoop *dm_getLoopArray(DerivedMesh *dm)
133 {
134         MLoop *mloop = CustomData_get_layer(&dm->loopData, CD_MLOOP);
135
136         if (!mloop) {
137                 mloop = CustomData_add_layer(&dm->loopData, CD_MLOOP, CD_CALLOC, NULL,
138                         dm->numLoopData);
139                 CustomData_set_layer_flag(&dm->loopData, CD_MLOOP, CD_FLAG_TEMPORARY);
140                 dm->copyLoopArray(dm, mloop);
141         }
142
143         return mloop;
144 }
145
146 static MPoly *dm_getPolyArray(DerivedMesh *dm)
147 {
148         MPoly *mpoly = CustomData_get_layer(&dm->polyData, CD_MPOLY);
149
150         if (!mpoly) {
151                 mpoly = CustomData_add_layer(&dm->polyData, CD_MPOLY, CD_CALLOC, NULL,
152                         dm->getNumFaces(dm));
153                 CustomData_set_layer_flag(&dm->polyData, CD_MPOLY, CD_FLAG_TEMPORARY);
154                 dm->copyPolyArray(dm, mpoly);
155         }
156
157         return mpoly;
158 }
159
160 static MVert *dm_dupVertArray(DerivedMesh *dm)
161 {
162         MVert *tmp = MEM_callocN(sizeof(*tmp) * dm->getNumVerts(dm),
163                                                          "dm_dupVertArray tmp");
164
165         if(tmp) dm->copyVertArray(dm, tmp);
166
167         return tmp;
168 }
169
170 static MEdge *dm_dupEdgeArray(DerivedMesh *dm)
171 {
172         MEdge *tmp = MEM_callocN(sizeof(*tmp) * dm->getNumEdges(dm),
173                                                          "dm_dupEdgeArray tmp");
174
175         if(tmp) dm->copyEdgeArray(dm, tmp);
176
177         return tmp;
178 }
179
180 static MFace *dm_dupFaceArray(DerivedMesh *dm)
181 {
182         MFace *tmp = MEM_callocN(sizeof(*tmp) * dm->getNumTessFaces(dm),
183                                                          "dm_dupFaceArray tmp");
184
185         if(tmp) dm->copyTessFaceArray(dm, tmp);
186
187         return tmp;
188 }
189
190 static MLoop *dm_dupLoopArray(DerivedMesh *dm)
191 {
192         MLoop *tmp = MEM_callocN(sizeof(*tmp) * dm->numLoopData,
193                                                          "dm_dupLoopArray tmp");
194
195         if(tmp) dm->copyLoopArray(dm, tmp);
196
197         return tmp;
198 }
199
200 static MPoly *dm_dupPolyArray(DerivedMesh *dm)
201 {
202         MPoly *tmp = MEM_callocN(sizeof(*tmp) * dm->numFaceData,
203                                                          "dm_dupPolyArray tmp");
204
205         if(tmp) dm->copyPolyArray(dm, tmp);
206
207         return tmp;
208 }
209
210 static CustomData *dm_getVertCData(DerivedMesh *dm)
211 {
212         return &dm->vertData;
213 }
214
215 static CustomData *dm_getEdgeCData(DerivedMesh *dm)
216 {
217         return &dm->edgeData;
218 }
219
220 static CustomData *dm_getFaceCData(DerivedMesh *dm)
221 {
222         return &dm->faceData;
223 }
224
225 static CustomData *dm_getLoopCData(DerivedMesh *dm)
226 {
227         return &dm->loopData;
228 }
229
230 static CustomData *dm_getPolyCData(DerivedMesh *dm)
231 {
232         return &dm->polyData;
233 }
234
235 void DM_init_funcs(DerivedMesh *dm)
236 {
237         /* default function implementations */
238         dm->getVertArray = dm_getVertArray;
239         dm->getEdgeArray = dm_getEdgeArray;
240         dm->getTessFaceArray = dm_getFaceArray;
241         dm->getLoopArray = dm_getLoopArray;
242         dm->getPolyArray = dm_getPolyArray;
243         dm->dupVertArray = dm_dupVertArray;
244         dm->dupEdgeArray = dm_dupEdgeArray;
245         dm->dupTessFaceArray = dm_dupFaceArray;
246         dm->dupLoopArray = dm_dupLoopArray;
247         dm->dupPolyArray = dm_dupPolyArray;
248
249         dm->getVertDataLayout = dm_getVertCData;
250         dm->getEdgeDataLayout = dm_getEdgeCData;
251         dm->getTessFaceDataLayout = dm_getFaceCData;
252         dm->getLoopDataLayout = dm_getLoopCData;
253         dm->getFaceDataLayout = dm_getPolyCData;
254
255         dm->getVertData = DM_get_vert_data;
256         dm->getEdgeData = DM_get_edge_data;
257         dm->getTessFaceData = DM_get_face_data;
258         dm->getVertDataArray = DM_get_vert_data_layer;
259         dm->getEdgeDataArray = DM_get_edge_data_layer;
260         dm->getTessFaceDataArray = DM_get_tessface_data_layer;
261
262         bvhcache_init(&dm->bvhCache);
263 }
264
265 void DM_init(DerivedMesh *dm, DerivedMeshType type, int numVerts, int numEdges,
266              int numFaces, int numLoops, int numPoly)
267 {
268         dm->type = type;
269         dm->numVertData = numVerts;
270         dm->numEdgeData = numEdges;
271         dm->numFaceData = numFaces;
272         dm->numLoopData = numLoops;
273         dm->numPolyData = numPoly;
274
275         DM_init_funcs(dm);
276         
277         dm->needsFree = 1;
278 }
279
280 void DM_from_template(DerivedMesh *dm, DerivedMesh *source, DerivedMeshType type,
281                       int numVerts, int numEdges, int numFaces,
282                       int numLoops, int numPolys)
283 {
284         CustomData_copy(&source->vertData, &dm->vertData, CD_MASK_DERIVEDMESH,
285                                         CD_CALLOC, numVerts);
286         CustomData_copy(&source->edgeData, &dm->edgeData, CD_MASK_DERIVEDMESH,
287                                         CD_CALLOC, numEdges);
288         CustomData_copy(&source->faceData, &dm->faceData, CD_MASK_DERIVEDMESH,
289                                         CD_CALLOC, numFaces);
290         CustomData_copy(&source->loopData, &dm->loopData, CD_MASK_DERIVEDMESH,
291                         CD_CALLOC, numLoops);
292         CustomData_copy(&source->polyData, &dm->polyData, CD_MASK_DERIVEDMESH,
293                         CD_CALLOC, numPolys);
294
295         dm->type = type;
296         dm->numVertData = numVerts;
297         dm->numEdgeData = numEdges;
298         dm->numFaceData = numFaces;
299         dm->numLoopData = numLoops;
300         dm->numPolyData = numPolys;
301
302         DM_init_funcs(dm);
303
304         dm->needsFree = 1;
305 }
306
307 int DM_release(DerivedMesh *dm)
308 {
309         if (dm->needsFree) {
310                 bvhcache_free(&dm->bvhCache);
311                 GPU_drawobject_free( dm );
312                 CustomData_free(&dm->vertData, dm->numVertData);
313                 CustomData_free(&dm->edgeData, dm->numEdgeData);
314                 CustomData_free(&dm->faceData, dm->numFaceData);
315                 CustomData_free(&dm->loopData, dm->numLoopData);
316                 CustomData_free(&dm->polyData, dm->numPolyData);
317
318                 return 1;
319         }
320         else {
321                 CustomData_free_temporary(&dm->vertData, dm->numVertData);
322                 CustomData_free_temporary(&dm->edgeData, dm->numEdgeData);
323                 CustomData_free_temporary(&dm->faceData, dm->numFaceData);
324                 CustomData_free_temporary(&dm->loopData, dm->numLoopData);
325                 CustomData_free_temporary(&dm->polyData, dm->numPolyData);
326
327                 return 0;
328         }
329 }
330
331 void DM_DupPolys(DerivedMesh *source, DerivedMesh *target)
332 {
333         CustomData_free(&target->loopData, source->numLoopData);
334         CustomData_free(&target->polyData, source->numPolyData);
335
336         CustomData_copy(&source->loopData, &target->loopData, CD_MASK_DERIVEDMESH, CD_DUPLICATE, source->numLoopData);
337         CustomData_copy(&source->polyData, &target->polyData, CD_MASK_DERIVEDMESH, CD_DUPLICATE, source->numPolyData);
338
339         target->numLoopData = source->numLoopData;
340         target->numPolyData = source->numPolyData;
341
342         if (!CustomData_has_layer(&target->polyData, CD_MPOLY)) {
343                 MPoly *mpoly;
344                 MLoop *mloop;
345
346                 mloop = source->dupLoopArray(source);
347                 mpoly = source->dupPolyArray(source);
348                 CustomData_add_layer(&target->loopData, CD_MLOOP, CD_ASSIGN, mloop, source->numLoopData);
349                 CustomData_add_layer(&target->polyData, CD_MPOLY, CD_ASSIGN, mpoly, source->numPolyData);
350         }
351 }
352
353 void DM_to_mesh(DerivedMesh *dm, Mesh *me, Object *ob)
354 {
355         /* dm might depend on me, so we need to do everything with a local copy */
356         Mesh tmp = *me;
357         int totvert, totedge, totface, totloop, totpoly;
358         int did_shapekeys=0;
359         
360         memset(&tmp.vdata, 0, sizeof(tmp.vdata));
361         memset(&tmp.edata, 0, sizeof(tmp.edata));
362         memset(&tmp.fdata, 0, sizeof(tmp.fdata));
363         memset(&tmp.ldata, 0, sizeof(tmp.ldata));
364         memset(&tmp.pdata, 0, sizeof(tmp.pdata));
365
366         totvert = tmp.totvert = dm->getNumVerts(dm);
367         totedge = tmp.totedge = dm->getNumEdges(dm);
368         totpoly = tmp.totpoly = dm->getNumFaces(dm);
369         totloop = tmp.totloop = dm->numLoopData;
370
371         CustomData_copy(&dm->vertData, &tmp.vdata, CD_MASK_MESH, CD_DUPLICATE, totvert);
372         CustomData_copy(&dm->edgeData, &tmp.edata, CD_MASK_MESH, CD_DUPLICATE, totedge);
373         CustomData_copy(&dm->loopData, &tmp.ldata, CD_MASK_MESH, CD_DUPLICATE, totloop);
374         CustomData_copy(&dm->polyData, &tmp.pdata, CD_MASK_MESH, CD_DUPLICATE, totpoly);
375
376         if (CustomData_has_layer(&dm->vertData, CD_SHAPEKEY)) {
377                 KeyBlock *kb;
378                 int i=0;
379                 
380                 if (ob) {
381                         for (kb=me->key->block.first; kb; kb=kb->next, i++) {
382                                 if (i == ob->shapenr-1) {
383                                         i = kb->uid;
384                                         break;
385                                 }
386                         }
387                         
388                         if (!kb) {
389                                 printf("error in DM_to_mesh: could not find active shapekey! eek!!\n");
390                                 i = INT_MAX;
391                         }
392                 } else {
393                         /*if no object, set to INT_MAX so we don't mess up any shapekey layers*/
394                         i = INT_MAX;
395                 }
396                 
397                 shapekey_layers_to_keyblocks(dm, me, i);
398                 did_shapekeys = 1;
399         }
400         
401         /* not all DerivedMeshes store their verts/edges/faces in CustomData, so
402            we set them here in case they are missing */
403         if(!CustomData_has_layer(&tmp.vdata, CD_MVERT))
404                 CustomData_add_layer(&tmp.vdata, CD_MVERT, CD_ASSIGN, dm->dupVertArray(dm), totvert);
405         if(!CustomData_has_layer(&tmp.edata, CD_MEDGE))
406                 CustomData_add_layer(&tmp.edata, CD_MEDGE, CD_ASSIGN, dm->dupEdgeArray(dm), totedge);
407         if(!CustomData_has_layer(&tmp.pdata, CD_MPOLY)) {
408                 tmp.mloop = dm->dupLoopArray(dm);
409                 tmp.mpoly = dm->dupPolyArray(dm);
410
411                 CustomData_add_layer(&tmp.ldata, CD_MLOOP, CD_ASSIGN, tmp.mloop, tmp.totloop);
412                 CustomData_add_layer(&tmp.pdata, CD_MPOLY, CD_ASSIGN, tmp.mpoly, tmp.totpoly);
413         }
414
415         /* object had got displacement layer, should copy this layer to save sculpted data */
416         /* NOTE: maybe some other layers should be copied? nazgul */
417         if(CustomData_has_layer(&me->ldata, CD_MDISPS)) {
418                 if (totloop == me->totloop) {
419                         MDisps *mdisps = CustomData_get_layer(&me->ldata, CD_MDISPS);
420                         CustomData_add_layer(&tmp.ldata, CD_MDISPS, CD_DUPLICATE, mdisps, totloop);
421                 }
422         }
423
424         tmp.totface = mesh_recalcTesselation(&tmp.fdata, &tmp.ldata, &tmp.pdata, tmp.mvert, tmp.totface, tmp.totloop, tmp.totpoly);
425         mesh_update_customdata_pointers(&tmp);
426
427         CustomData_free(&me->vdata, me->totvert);
428         CustomData_free(&me->edata, me->totedge);
429         CustomData_free(&me->fdata, me->totface);
430         CustomData_free(&me->ldata, me->totloop);
431         CustomData_free(&me->pdata, me->totpoly);
432
433         /*  ok, this should now use new CD shapekey data,
434             which shouuld be fed through the modifier 
435                 stack*/
436         if(tmp.totvert != me->totvert && !did_shapekeys && me->key) {
437                 printf("YEEK! this should be recoded! Shape key loss!!!\n");
438                 if(tmp.key) tmp.key->id.us--;
439                 tmp.key = NULL;
440         }
441
442         *me = tmp;
443 }
444
445 void DM_to_meshkey(DerivedMesh *dm, Mesh *me, KeyBlock *kb)
446 {
447         int a, totvert = dm->getNumVerts(dm);
448         float *fp;
449         MVert *mvert;
450         
451         if(totvert==0 || me->totvert==0 || me->totvert!=totvert) return;
452         
453         if(kb->data) MEM_freeN(kb->data);
454         kb->data= MEM_callocN(me->key->elemsize*me->totvert, "kb->data");
455         kb->totelem= totvert;
456         
457         fp= kb->data;
458         mvert=dm->getVertDataArray(dm, CD_MVERT);
459         
460         for(a=0; a<kb->totelem; a++, fp+=3, mvert++) {
461                 copy_v3_v3(fp, mvert->co);
462         }
463 }
464
465 void DM_set_only_copy(DerivedMesh *dm, CustomDataMask mask)
466 {
467         CustomData_set_only_copy(&dm->vertData, mask);
468         CustomData_set_only_copy(&dm->edgeData, mask);
469         CustomData_set_only_copy(&dm->faceData, mask);
470 }
471
472 void DM_add_vert_layer(DerivedMesh *dm, int type, int alloctype, void *layer)
473 {
474         CustomData_add_layer(&dm->vertData, type, alloctype, layer, dm->numVertData);
475 }
476
477 void DM_add_edge_layer(DerivedMesh *dm, int type, int alloctype, void *layer)
478 {
479         CustomData_add_layer(&dm->edgeData, type, alloctype, layer, dm->numEdgeData);
480 }
481
482 void DM_add_tessface_layer(DerivedMesh *dm, int type, int alloctype, void *layer)
483 {
484         CustomData_add_layer(&dm->faceData, type, alloctype, layer, dm->numFaceData);
485 }
486
487 static void DM_add_loop_layer(DerivedMesh *dm, int type, int alloctype, void *layer)
488 {
489         CustomData_add_layer(&dm->loopData, type, alloctype, layer, dm->numLoopData);
490 }
491
492 void DM_add_face_layer(DerivedMesh *dm, int type, int alloctype, void *layer)
493 {
494         CustomData_add_layer(&dm->polyData, type, alloctype, layer, dm->numPolyData);
495 }
496
497 void *DM_get_vert_data(DerivedMesh *dm, int index, int type)
498 {
499         return CustomData_get(&dm->vertData, index, type);
500 }
501
502 void *DM_get_edge_data(DerivedMesh *dm, int index, int type)
503 {
504         return CustomData_get(&dm->edgeData, index, type);
505 }
506
507 void *DM_get_face_data(DerivedMesh *dm, int index, int type)
508 {
509         return CustomData_get(&dm->faceData, index, type);
510 }
511
512 void *DM_get_vert_data_layer(DerivedMesh *dm, int type)
513 {
514         if(type == CD_MVERT)
515                 return dm->getVertArray(dm);
516
517         return CustomData_get_layer(&dm->vertData, type);
518 }
519
520 void *DM_get_edge_data_layer(DerivedMesh *dm, int type)
521 {
522         if(type == CD_MEDGE)
523                 return dm->getEdgeArray(dm);
524
525         return CustomData_get_layer(&dm->edgeData, type);
526 }
527
528 void *DM_get_tessface_data_layer(DerivedMesh *dm, int type)
529 {
530         if (type == CD_MFACE)
531                 return dm->getTessFaceArray(dm);
532
533         return CustomData_get_layer(&dm->faceData, type);
534 }
535
536 void *DM_get_face_data_layer(DerivedMesh *dm, int type)
537 {
538         return CustomData_get_layer(&dm->polyData, type);
539 }
540
541 void DM_set_vert_data(DerivedMesh *dm, int index, int type, void *data)
542 {
543         CustomData_set(&dm->vertData, index, type, data);
544 }
545
546 void DM_set_edge_data(DerivedMesh *dm, int index, int type, void *data)
547 {
548         CustomData_set(&dm->edgeData, index, type, data);
549 }
550
551 void DM_set_face_data(DerivedMesh *dm, int index, int type, void *data)
552 {
553         CustomData_set(&dm->faceData, index, type, data);
554 }
555
556 void DM_copy_vert_data(DerivedMesh *source, DerivedMesh *dest,
557                                            int source_index, int dest_index, int count)
558 {
559         CustomData_copy_data(&source->vertData, &dest->vertData,
560                                                  source_index, dest_index, count);
561 }
562
563 void DM_copy_edge_data(DerivedMesh *source, DerivedMesh *dest,
564                                            int source_index, int dest_index, int count)
565 {
566         CustomData_copy_data(&source->edgeData, &dest->edgeData,
567                                                  source_index, dest_index, count);
568 }
569
570 void DM_copy_tessface_data(DerivedMesh *source, DerivedMesh *dest,
571                                            int source_index, int dest_index, int count)
572 {
573         CustomData_copy_data(&source->faceData, &dest->faceData,
574                                                  source_index, dest_index, count);
575 }
576
577 void DM_copy_loop_data(DerivedMesh *source, DerivedMesh *dest,
578                        int source_index, int dest_index, int count)
579 {
580         CustomData_copy_data(&source->loopData, &dest->loopData,
581                              source_index, dest_index, count);
582 }
583
584 void DM_copy_face_data(DerivedMesh *source, DerivedMesh *dest,
585                        int source_index, int dest_index, int count)
586 {
587         CustomData_copy_data(&source->polyData, &dest->polyData,
588                              source_index, dest_index, count);
589 }
590
591 void DM_free_vert_data(struct DerivedMesh *dm, int index, int count)
592 {
593         CustomData_free_elem(&dm->vertData, index, count);
594 }
595
596 void DM_free_edge_data(struct DerivedMesh *dm, int index, int count)
597 {
598         CustomData_free_elem(&dm->edgeData, index, count);
599 }
600
601 void DM_free_tessface_data(struct DerivedMesh *dm, int index, int count)
602 {
603         CustomData_free_elem(&dm->faceData, index, count);
604 }
605
606 void DM_free_loop_data(struct DerivedMesh *dm, int index, int count)
607 {
608         CustomData_free_elem(&dm->loopData, index, count);
609 }
610
611 void DM_free_face_data(struct DerivedMesh *dm, int index, int count)
612 {
613         CustomData_free_elem(&dm->polyData, index, count);
614 }
615
616 void DM_interp_vert_data(DerivedMesh *source, DerivedMesh *dest,
617                                                  int *src_indices, float *weights,
618                                                  int count, int dest_index)
619 {
620         CustomData_interp(&source->vertData, &dest->vertData, src_indices,
621                                           weights, NULL, count, dest_index);
622 }
623
624 void DM_interp_edge_data(DerivedMesh *source, DerivedMesh *dest,
625                                                  int *src_indices,
626                                                  float *weights, EdgeVertWeight *vert_weights,
627                                                  int count, int dest_index)
628 {
629         CustomData_interp(&source->edgeData, &dest->edgeData, src_indices,
630                                           weights, (float*)vert_weights, count, dest_index);
631 }
632
633 void DM_interp_tessface_data(DerivedMesh *source, DerivedMesh *dest,
634                                                  int *src_indices,
635                                                  float *weights, FaceVertWeight *vert_weights,
636                                                  int count, int dest_index)
637 {
638         CustomData_interp(&source->faceData, &dest->faceData, src_indices,
639                                           weights, (float*)vert_weights, count, dest_index);
640 }
641
642 void DM_swap_tessface_data(DerivedMesh *dm, int index, const int *corner_indices)
643 {
644         CustomData_swap(&dm->faceData, index, corner_indices);
645 }
646
647 void DM_interp_loop_data(DerivedMesh *source, DerivedMesh *dest,
648                          int *src_indices,
649                          float *weights, int count, int dest_index)
650 {
651         CustomData_interp(&source->loopData, &dest->loopData, src_indices,
652                           weights, NULL, count, dest_index);
653 }
654
655 void DM_interp_face_data(DerivedMesh *source, DerivedMesh *dest,
656                          int *src_indices,
657                          float *weights, int count, int dest_index)
658 {
659         CustomData_interp(&source->polyData, &dest->polyData, src_indices,
660                           weights, NULL, count, dest_index);
661 }
662
663 ///
664 DerivedMesh *mesh_create_derived(Mesh *me, Object *ob, float (*vertCos)[3])
665 {
666         DerivedMesh *dm = CDDM_from_mesh(me, ob);
667         
668         if(!dm)
669                 return NULL;
670         
671         if (vertCos)
672                 CDDM_apply_vert_coords(dm, vertCos);
673
674         CDDM_calc_normals(dm);
675
676         return dm;
677 }
678
679 /***/
680
681 DerivedMesh *mesh_create_derived_for_modifier(Scene *scene, Object *ob, 
682         ModifierData *md, int build_shapekey_layers)
683 {
684         Mesh *me = ob->data;
685         ModifierTypeInfo *mti = modifierType_getInfo(md->type);
686         DerivedMesh *dm;
687
688         md->scene= scene;
689         
690         if (!(md->mode&eModifierMode_Realtime)) return NULL;
691         if (mti->isDisabled && mti->isDisabled(md, 0)) return NULL;
692         
693         if (build_shapekey_layers && me->key && ob->shapenr <= BLI_countlist(&me->key->block)) {
694                 key_to_mesh(BLI_findlink(&me->key->block, ob->shapenr-1), me);
695         }
696         
697         if (mti->type==eModifierTypeType_OnlyDeform) {
698                 int numVerts;
699                 float (*deformedVerts)[3] = mesh_getVertexCos(me, &numVerts);
700
701                 mti->deformVerts(md, ob, NULL, deformedVerts, numVerts, 0, 0);
702                 dm = mesh_create_derived(me, ob, deformedVerts);
703
704                 if (build_shapekey_layers)
705                         add_shapekey_layers(dm, me, ob);
706                 
707                 MEM_freeN(deformedVerts);
708         } else {
709                 DerivedMesh *tdm = mesh_create_derived(me, ob, NULL);
710
711                 if (build_shapekey_layers)
712                         add_shapekey_layers(tdm, me, ob);
713                 
714                 dm = mti->applyModifier(md, ob, tdm, 0, 0);
715
716                 if(tdm != dm) tdm->release(tdm);
717         }
718
719         return dm;
720 }
721
722 static float *get_editbmesh_orco_verts(BMEditMesh *em)
723 {
724         BMIter iter;
725         BMVert *eve;
726         float *orco;
727         int a, totvert;
728
729         /* these may not really be the orco's, but it's only for preview.
730          * could be solver better once, but isn't simple */
731
732         totvert= em->bm->totvert;
733         
734         orco = MEM_mallocN(sizeof(float)*3*totvert, "EditMesh Orco");
735
736         eve = BMIter_New(&iter, em->bm, BM_VERTS_OF_MESH, NULL);
737         for (a=0; eve; eve=BMIter_Step(&iter), a+=3) {
738                 copy_v3_v3(orco+a, eve->co);
739         }
740         
741         return orco;
742 }
743
744 /* orco custom data layer */
745 static void *get_orco_coords_dm(Object *ob, BMEditMesh *em, int layer, int *free)
746 {
747         *free= 0;
748
749         if(layer == CD_ORCO) {
750                 /* get original coordinates */
751                 *free= 1;
752
753                 if(em)
754                         return (float(*)[3])get_editbmesh_orco_verts(em);
755                 else
756                         return (float(*)[3])get_mesh_orco_verts(ob);
757         }
758         else if(layer == CD_CLOTH_ORCO) {
759                 /* apply shape key for cloth, this should really be solved
760                    by a more flexible customdata system, but not simple */
761                 if(!em) {
762                         ClothModifierData *clmd = (ClothModifierData *)modifiers_findByType(ob, eModifierType_Cloth);
763                         if (clmd) {
764                                 KeyBlock *kb= key_get_keyblock(ob_get_key(ob), clmd->sim_parms->shapekey_rest);
765         
766                                 if(kb->data)
767                                         return kb->data;
768                         }
769                 }
770
771                 return NULL;
772         }
773
774         return NULL;
775 }
776
777 static DerivedMesh *create_orco_dm(Object *ob, Mesh *me, BMEditMesh *em, int layer)
778 {
779         DerivedMesh *dm;
780         float (*orco)[3];
781         int free;
782
783         if(em) dm= CDDM_from_BMEditMesh(em, me, 0);
784         else dm= CDDM_from_mesh(me, ob);
785
786         orco= get_orco_coords_dm(ob, em, layer, &free);
787
788         if(orco) {
789                 CDDM_apply_vert_coords(dm, orco);
790                 if(free) MEM_freeN(orco);
791         }
792
793         CDDM_calc_normals(dm);
794
795         return dm;
796 }
797
798 static void add_orco_dm(Object *ob, BMEditMesh *em, DerivedMesh *dm,
799                                                 DerivedMesh *orcodm, int layer)
800 {
801         float (*orco)[3], (*layerorco)[3];
802         int totvert, free;
803
804         totvert= dm->getNumVerts(dm);
805
806         if(orcodm) {
807                 orco= MEM_callocN(sizeof(float)*3*totvert, "dm orco");
808                 free= 1;
809
810                 if(orcodm->getNumVerts(orcodm) == totvert)
811                         orcodm->getVertCos(orcodm, orco);
812                 else
813                         dm->getVertCos(dm, orco);
814         }
815         else
816                 orco= get_orco_coords_dm(ob, em, layer, &free);
817
818         if(orco) {
819                 if(layer == CD_ORCO)
820                         transform_mesh_orco_verts(ob->data, orco, totvert, 0);
821
822                 if(!(layerorco = DM_get_vert_data_layer(dm, layer))) {
823                         DM_add_vert_layer(dm, layer, CD_CALLOC, NULL);
824                         layerorco = DM_get_vert_data_layer(dm, layer);
825                 }
826
827                 memcpy(layerorco, orco, sizeof(float)*3*totvert);
828                 if(free) MEM_freeN(orco);
829         }
830 }
831
832 /* weight paint colors */
833
834 /* Something of a hack, at the moment deal with weightpaint
835  * by tucking into colors during modifier eval, only in
836  * wpaint mode. Works ok but need to make sure recalc
837  * happens on enter/exit wpaint.
838  */
839
840 void weight_to_rgb(float input, float *fr, float *fg, float *fb)
841 {
842         float blend;
843         
844         blend= ((input/2.0f)+0.5f);
845         
846         if (input<=0.25f){      // blue->cyan
847                 *fr= 0.0f;
848                 *fg= blend*input*4.0f;
849                 *fb= blend;
850         }
851         else if (input<=0.50f){ // cyan->green
852                 *fr= 0.0f;
853                 *fg= blend;
854                 *fb= blend*(1.0f-((input-0.25f)*4.0f)); 
855         }
856         else if (input <= 0.75f){       // green->yellow
857                 *fr= blend * ((input-0.50f)*4.0f);
858                 *fg= blend;
859                 *fb= 0.0f;
860         }
861         else if (input <= 1.0f){ // yellow->red
862                 *fr= blend;
863                 *fg= blend * (1.0f-((input-0.75f)*4.0f)); 
864                 *fb= 0.0f;
865         }
866 }
867
868 /* draw_flag's for calc_weightpaint_vert_color */
869 enum {
870         CALC_WP_MULTIPAINT= (1<<0),
871         CALC_WP_AUTO_NORMALIZE= (1<<1),
872 };
873
874 static void calc_weightpaint_vert_color(Object *ob, ColorBand *coba, int vert, unsigned char *col, char *dg_flags, int selected, int UNUSED(unselected), const int draw_flag)
875 {
876         Mesh *me = ob->data;
877         float colf[4], input = 0.0f;
878         int i;
879
880         
881         int make_black= FALSE;
882
883         if (me->dvert) {
884                 if ((selected > 1) && (draw_flag & CALC_WP_MULTIPAINT)) {
885                         
886                         int was_a_nonzero= FALSE;
887                         for (i=0; i<me->dvert[vert].totweight; i++) {
888                                 /* in multipaint, get the average if auto normalize is inactive
889                                  * get the sum if it is active */
890                                 if(dg_flags[me->dvert[vert].dw[i].def_nr]) {
891                                         if(me->dvert[vert].dw[i].weight) {
892                                                 input+= me->dvert[vert].dw[i].weight;
893                                                 was_a_nonzero= TRUE;
894                                         }
895                                 }
896                         }
897
898                         /* make it black if the selected groups have no weight on a vertex */
899                         if(was_a_nonzero == FALSE) {
900                                 make_black = TRUE;
901                         }
902                         else if ((draw_flag & CALC_WP_AUTO_NORMALIZE) == FALSE) {
903                                 input /= selected; /* get the average */
904                         }
905                 }
906                 else {
907                         /* default, non tricky behavior */
908                         for (i=0; i<me->dvert[vert].totweight; i++) {
909                                 if (me->dvert[vert].dw[i].def_nr==ob->actdef-1) {
910                                         input+=me->dvert[vert].dw[i].weight;
911                                 }
912                         }
913                 }
914         }
915         
916         if (make_black) {
917                 col[3] = 0;
918                 col[2] = 0;
919                 col[1] = 0;
920                 col[0] = 255;
921                 return;
922         }
923
924         CLAMP(input, 0.0f, 1.0f);       
925
926         if(coba)
927                 do_colorband(coba, input, colf);
928         else
929                 weight_to_rgb(input, colf, colf+1, colf+2);
930         
931         col[3] = (unsigned char)(colf[0] * 255.0f);
932         col[2] = (unsigned char)(colf[1] * 255.0f);
933         col[1] = (unsigned char)(colf[2] * 255.0f);
934         col[0] = 255;
935 }
936
937 static ColorBand *stored_cb= NULL;
938
939 void vDM_ColorBand_store(ColorBand *coba)
940 {
941         stored_cb= coba;
942 }
943
944 static void add_weight_mcol_dm(Object *ob, DerivedMesh *dm, int const draw_flag)
945 {
946         // Mesh *me = ob->data; // UNUSED
947         MFace *mf = dm->getTessFaceArray(dm);
948         MLoop *mloop = dm->getLoopArray(dm), *ml;
949         MPoly *mp = dm->getPolyArray(dm);
950         ColorBand *coba= stored_cb;     /* warning, not a local var */
951         unsigned char *wtcol;
952         unsigned char(*wlcol)[4] = NULL;
953         BLI_array_declare(wlcol);
954         int i, j, totface=dm->getNumTessFaces(dm), totloop;
955         int *origIndex = dm->getVertDataArray(dm, CD_ORIGINDEX);
956
957         int defbase_len = BLI_countlist(&ob->defbase);
958         char *defbase_sel = MEM_mallocN(defbase_len * sizeof(char), __func__);
959         int selected = get_selected_defgroups(ob, defbase_sel, defbase_len);
960         int unselected = defbase_len - selected;
961
962         wtcol = MEM_callocN (sizeof (unsigned char) * totface*4*4, "weightmap");
963         
964         /*first add colors to the tesselation faces*/
965         memset(wtcol, 0x55, sizeof (unsigned char) * totface*4*4);
966         for (i=0; i<totface; i++, mf++) {
967                 /*origindex being NULL means we're operating on original mesh data*/
968                 calc_weightpaint_vert_color(ob, coba, mf->v1, &wtcol[(i*4 + 0)*4], defbase_sel, selected, unselected, draw_flag);
969                 calc_weightpaint_vert_color(ob, coba, mf->v2, &wtcol[(i*4 + 1)*4], defbase_sel, selected, unselected, draw_flag);
970                 calc_weightpaint_vert_color(ob, coba, mf->v3, &wtcol[(i*4 + 2)*4], defbase_sel, selected, unselected, draw_flag);
971                 if (mf->v4)
972                         calc_weightpaint_vert_color(ob, coba, mf->v4, &wtcol[(i*4 + 3)*4], defbase_sel, selected, unselected, draw_flag);
973         }
974         
975         CustomData_add_layer(&dm->faceData, CD_WEIGHT_MCOL, CD_ASSIGN, wtcol, totface);
976
977         /*now add to loops, so the data can be passed through the modifier stack*/
978         totloop = 0;
979         for (i=0; i<dm->numPolyData; i++, mp++) {
980                 ml = mloop + mp->loopstart;
981
982                 for (j=0; j<mp->totloop; j++, ml++, totloop++) {
983                         BLI_array_growone(wlcol);
984
985                         calc_weightpaint_vert_color(ob, coba, origIndex ? origIndex[ml->v] : ml->v,
986                                                                                 (unsigned char *)&wlcol[totloop], defbase_sel, selected, unselected, draw_flag);
987                 }
988         }
989
990         MEM_freeN(defbase_sel);
991
992         CustomData_add_layer(&dm->loopData, CD_WEIGHT_MLOOPCOL, CD_ASSIGN, wlcol, totloop);
993 }
994
995
996 static void shapekey_layers_to_keyblocks(DerivedMesh *dm, Mesh *me, int actshape_uid)
997 {
998         KeyBlock *kb;
999         int i, j, tot;
1000         
1001         if (!me->key)
1002                 return; 
1003         
1004         tot = CustomData_number_of_layers(&dm->vertData, CD_SHAPEKEY);
1005         for (i=0; i<tot; i++) {
1006                 CustomDataLayer *layer = &dm->vertData.layers[CustomData_get_layer_index_n(&dm->vertData, CD_SHAPEKEY, i)];
1007                 float (*cos)[3], (*kbcos)[3];
1008                 
1009                 for (kb=me->key->block.first; kb; kb=kb->next) {
1010                         if (kb->uid == layer->uid)
1011                                 break;
1012                 }
1013                 
1014                 if (!kb) {
1015                         kb = add_keyblock(me->key, layer->name);
1016                         kb->uid = layer->uid;
1017                 }
1018                 
1019                 if (kb->data)
1020                         MEM_freeN(kb->data);
1021                 
1022                 cos = CustomData_get_layer_n(&dm->vertData, CD_SHAPEKEY, i);
1023                 kb->totelem = dm->numVertData;
1024
1025                 kb->data = kbcos = MEM_mallocN(sizeof(float)*3*kb->totelem, "kbcos DerivedMesh.c");
1026                 if (kb->uid == actshape_uid) {
1027                         MVert *mvert = dm->getVertArray(dm);
1028                         
1029                         for (j=0; j<dm->numVertData; j++, kbcos++, mvert++) {
1030                                 copy_v3_v3(*kbcos, mvert->co);
1031                         }
1032                 } else {
1033                         for (j=0; j<kb->totelem; j++, cos++, kbcos++) {
1034                                 copy_v3_v3(*kbcos, *cos);
1035                         }
1036                 }
1037         }
1038         
1039         for (kb=me->key->block.first; kb; kb=kb->next) {
1040                 if (kb->totelem != dm->numVertData) {
1041                         if (kb->data)
1042                                 MEM_freeN(kb->data);
1043                         
1044                         kb->totelem = dm->numVertData;
1045                         kb->data = MEM_callocN(sizeof(float)*3*kb->totelem, "kb->data derivedmesh.c");
1046                         fprintf(stderr, "%s: lost a shapekey layer! (bmesh internal error)\n", __func__);
1047                 }
1048         }
1049 }
1050
1051 static void add_shapekey_layers(DerivedMesh *dm, Mesh *me, Object *UNUSED(ob))
1052 {
1053         KeyBlock *kb;
1054         Key *key = me->key;
1055         int a, b;
1056         
1057         if (!me->key)
1058                 return;
1059         
1060         if (dm->numVertData != me->totvert) {
1061                 printf("error in add_shapekey_layers: dm isn't the same size as me\n");
1062                 return;
1063         }
1064                 
1065         for (a=0, kb=key->block.first; kb; kb=kb->next, a++) {
1066                 float (*cos)[3] = CustomData_add_layer_named(&dm->vertData, CD_SHAPEKEY, CD_CALLOC, NULL, dm->numVertData, kb->name);
1067                 int ci = CustomData_get_layer_index_n(&dm->vertData, CD_SHAPEKEY, a);
1068                 
1069                 dm->vertData.layers[ci].uid = kb->uid;
1070                 if (kb->totelem != dm->numVertData) {
1071                         printf("error in add_shapekey_layers: totelem and totvert don't match");
1072                         continue;
1073                 }
1074                 
1075                 for (b=0; b<kb->totelem; b++, cos++) {
1076                         copy_v3_v3((float *)cos, ((float*)kb->data)+b*3);
1077                 }
1078         }
1079 }
1080
1081 /* new value for useDeform -1  (hack for the gameengine):
1082  * - apply only the modifier stack of the object, skipping the virtual modifiers,
1083  * - don't apply the key
1084  * - apply deform modifiers and input vertexco
1085  */
1086 static void mesh_calc_modifiers(Scene *scene, Object *ob, float (*inputVertexCos)[3],
1087                                                                 DerivedMesh **deform_r, DerivedMesh **final_r,
1088                                                                 int useRenderParams, int useDeform,
1089                                                                 int needMapping, CustomDataMask dataMask, 
1090                                                                 int index, int useCache, int build_shapekey_layers)
1091 {
1092         Mesh *me = ob->data;
1093         ModifierData *firstmd, *md;
1094         LinkNode *datamasks, *curr;
1095         CustomDataMask mask, nextmask, append_mask = 0;
1096         float (*deformedVerts)[3] = NULL;
1097         DerivedMesh *dm=NULL, *orcodm, *clothorcodm, *finaldm;
1098         int numVerts = me->totvert;
1099         int required_mode;
1100         int isPrevDeform= FALSE;
1101         int skipVirtualArmature = (useDeform < 0);
1102         MultiresModifierData *mmd= get_multires_modifier(scene, ob, 0);
1103         int has_multires = mmd != NULL, multires_applied = 0;
1104         int sculpt_mode = ob->mode & OB_MODE_SCULPT && ob->sculpt;
1105
1106         int draw_flag= ((scene->toolsettings->multipaint ? CALC_WP_MULTIPAINT : 0) |
1107                         (scene->toolsettings->auto_normalize ? CALC_WP_AUTO_NORMALIZE : 0));
1108
1109         if(mmd && !mmd->sculptlvl)
1110                 has_multires = 0;
1111
1112         if(!skipVirtualArmature) {
1113                 firstmd = modifiers_getVirtualModifierList(ob);
1114         }
1115         else {
1116                 /* game engine exception */
1117                 firstmd = ob->modifiers.first;
1118                 if(firstmd && firstmd->type == eModifierType_Armature)
1119                         firstmd = firstmd->next;
1120         }
1121
1122         md = firstmd;
1123
1124         modifiers_clearErrors(ob);
1125
1126         if(useRenderParams) required_mode = eModifierMode_Render;
1127         else required_mode = eModifierMode_Realtime;
1128
1129         datamasks = modifiers_calcDataMasks(scene, ob, md, dataMask, required_mode);
1130         curr = datamasks;
1131
1132         if(deform_r) *deform_r = NULL;
1133         *final_r = NULL;
1134
1135         if(useDeform) {
1136                 if(inputVertexCos)
1137                         deformedVerts = inputVertexCos;
1138                 
1139                 /* Apply all leading deforming modifiers */
1140                 for(;md; md = md->next, curr = curr->next) {
1141                         ModifierTypeInfo *mti = modifierType_getInfo(md->type);
1142
1143                         md->scene= scene;
1144                         
1145                         if(!modifier_isEnabled(scene, md, required_mode)) continue;
1146                         if(useDeform < 0 && mti->dependsOnTime && mti->dependsOnTime(md)) continue;
1147
1148                         if(mti->type == eModifierTypeType_OnlyDeform) {
1149                                 if(!deformedVerts)
1150                                         deformedVerts = mesh_getVertexCos(me, &numVerts);
1151
1152                                 mti->deformVerts(md, ob, NULL, deformedVerts, numVerts, useRenderParams, useDeform);
1153                         } else {
1154                                 break;
1155                         }
1156                         
1157                         /* grab modifiers until index i */
1158                         if((index >= 0) && (modifiers_indexInObject(ob, md) >= index))
1159                                 break;
1160                 }
1161
1162                 /* Result of all leading deforming modifiers is cached for
1163                  * places that wish to use the original mesh but with deformed
1164                  * coordinates (vpaint, etc.)
1165                  */
1166                 if (deform_r) {
1167                         *deform_r = CDDM_from_mesh(me, ob);
1168                         
1169                         if (build_shapekey_layers)
1170                                 add_shapekey_layers(dm, me, ob);
1171                         
1172                         if(deformedVerts) {
1173                                 CDDM_apply_vert_coords(*deform_r, deformedVerts);
1174                                 CDDM_calc_normals(*deform_r);
1175                         }
1176                 }
1177         } else {
1178                 /* default behaviour for meshes */
1179                 if(inputVertexCos)
1180                         deformedVerts = inputVertexCos;
1181                 else
1182                         deformedVerts = mesh_getVertexCos(me, &numVerts);
1183         }
1184
1185
1186         /* Now apply all remaining modifiers. If useDeform is off then skip
1187          * OnlyDeform ones. 
1188          */
1189         dm = NULL;
1190         orcodm = NULL;
1191         clothorcodm = NULL;
1192
1193         for(;md; md = md->next, curr = curr->next) {
1194                 ModifierTypeInfo *mti = modifierType_getInfo(md->type);
1195
1196                 md->scene= scene;
1197
1198                 if(!modifier_isEnabled(scene, md, required_mode)) continue;
1199                 if(mti->type == eModifierTypeType_OnlyDeform && !useDeform) continue;
1200                 if((mti->flags & eModifierTypeFlag_RequiresOriginalData) && dm) {
1201                         modifier_setError(md, "Modifier requires original data, bad stack position.");
1202                         continue;
1203                 }
1204                 if(sculpt_mode && (!has_multires || multires_applied)) {
1205                         int unsupported= 0;
1206
1207                         if(scene->toolsettings->sculpt->flags & SCULPT_ONLY_DEFORM)
1208                                 unsupported|= mti->type != eModifierTypeType_OnlyDeform;
1209
1210                         unsupported|= md->type == eModifierType_Multires && ((MultiresModifierData*)md)->sculptlvl==0;
1211                         unsupported|= multires_applied;
1212
1213                         if(unsupported) {
1214                                 modifier_setError(md, "Not supported in sculpt mode.");
1215                                 continue;
1216                         }
1217                 }
1218                 if(needMapping && !modifier_supportsMapping(md)) continue;
1219                 if(useDeform < 0 && mti->dependsOnTime && mti->dependsOnTime(md)) continue;
1220
1221                 /* add an orco layer if needed by this modifier */
1222                 if(mti->requiredDataMask)
1223                         mask = mti->requiredDataMask(ob, md);
1224                 else
1225                         mask = 0;
1226
1227                 if(dm && (mask & CD_MASK_ORCO))
1228                         add_orco_dm(ob, NULL, dm, orcodm, CD_ORCO);
1229
1230                 /* How to apply modifier depends on (a) what we already have as
1231                  * a result of previous modifiers (could be a DerivedMesh or just
1232                  * deformed vertices) and (b) what type the modifier is.
1233                  */
1234
1235                 if(mti->type == eModifierTypeType_OnlyDeform) {
1236                         /* No existing verts to deform, need to build them. */
1237                         if(!deformedVerts) {
1238                                 if(dm) {
1239                                         /* Deforming a derived mesh, read the vertex locations
1240                                          * out of the mesh and deform them. Once done with this
1241                                          * run of deformers verts will be written back.
1242                                          */
1243                                         numVerts = dm->getNumVerts(dm);
1244                                         deformedVerts =
1245                                                 MEM_mallocN(sizeof(*deformedVerts) * numVerts, "dfmv");
1246                                         dm->getVertCos(dm, deformedVerts);
1247                                 } else {
1248                                         deformedVerts = mesh_getVertexCos(me, &numVerts);
1249                                 }
1250                         }
1251
1252                         /* if this is not the last modifier in the stack then recalculate the normals
1253                          * to avoid giving bogus normals to the next modifier see: [#23673] */
1254                         if(dm && isPrevDeform &&  mti->dependsOnNormals && mti->dependsOnNormals(md)) {
1255                                 /* XXX, this covers bug #23673, but we may need normal calc for other types */
1256                                 if(dm && dm->type == DM_TYPE_CDDM) {
1257                                         CDDM_apply_vert_coords(dm, deformedVerts);
1258                                         CDDM_calc_normals(dm);
1259                                 }
1260                         }
1261
1262                         mti->deformVerts(md, ob, dm, deformedVerts, numVerts, useRenderParams, useDeform);
1263                 } else {
1264                         DerivedMesh *ndm;
1265
1266                         /* determine which data layers are needed by following modifiers */
1267                         if(curr->next)
1268                                 nextmask= (CustomDataMask)GET_INT_FROM_POINTER(curr->next->link);
1269                         else
1270                                 nextmask= dataMask;
1271
1272                         /* apply vertex coordinates or build a DerivedMesh as necessary */
1273                         if(dm) {
1274                                 if(deformedVerts) {
1275                                         DerivedMesh *tdm = CDDM_copy(dm, 0);
1276                                         dm->release(dm);
1277                                         dm = tdm;
1278
1279                                         CDDM_apply_vert_coords(dm, deformedVerts);
1280                                         CDDM_calc_normals(dm);
1281                                 }
1282                         } else {
1283                                 dm = CDDM_from_mesh(me, ob);
1284
1285                                 if (build_shapekey_layers)
1286                                         add_shapekey_layers(dm, me, ob);
1287
1288                                 if(deformedVerts) {
1289                                         CDDM_apply_vert_coords(dm, deformedVerts);
1290                                         CDDM_calc_normals(dm);
1291                                 }
1292
1293                                 /* Constructive modifiers need to have an origindex
1294                                  * otherwise they wont have anywhere to copy the data from.
1295                                  *
1296                                  * Also create ORIGINDEX data if any of the following modifiers
1297                                  * requests it, this way Mirror, Solidify etc will keep ORIGINDEX
1298                                  * data by using generic DM_copy_vert_data() functions.
1299                                  */
1300                                 if(needMapping || (nextmask & CD_MASK_ORIGINDEX)) {
1301                                         /* calc */
1302                                         DM_add_vert_layer(dm, CD_ORIGINDEX, CD_CALLOC, NULL);
1303                                         DM_add_edge_layer(dm, CD_ORIGINDEX, CD_CALLOC, NULL);
1304                                         DM_add_face_layer(dm, CD_ORIGINDEX, CD_CALLOC, NULL);
1305
1306                                         range_vni(DM_get_vert_data_layer(dm, CD_ORIGINDEX), dm->numVertData, 0);
1307                                         range_vni(DM_get_edge_data_layer(dm, CD_ORIGINDEX), dm->numEdgeData, 0);
1308                                         range_vni(DM_get_face_data_layer(dm, CD_ORIGINDEX), dm->numPolyData, 0);
1309                                 }
1310
1311                                 if((dataMask & CD_MASK_WEIGHT_MCOL) && (ob->mode & OB_MODE_WEIGHT_PAINT))
1312                                         add_weight_mcol_dm(ob, dm, draw_flag);
1313
1314                         }
1315
1316                         
1317                         /* set the DerivedMesh to only copy needed data */
1318                         mask= (CustomDataMask)GET_INT_FROM_POINTER(curr->link);
1319                         /* needMapping check here fixes bug [#28112], otherwise its
1320                          * possible that it wont be copied */
1321                         mask |= append_mask;
1322                         DM_set_only_copy(dm, mask | (needMapping ? CD_MASK_ORIGINDEX : 0));
1323                         
1324                         /* add cloth rest shape key if need */
1325                         if(mask & CD_MASK_CLOTH_ORCO)
1326                                 add_orco_dm(ob, NULL, dm, clothorcodm, CD_CLOTH_ORCO);
1327
1328                         /* add an origspace layer if needed */
1329                         if(((CustomDataMask)GET_INT_FROM_POINTER(curr->link)) & CD_MASK_ORIGSPACE)
1330                                 if(!CustomData_has_layer(&dm->faceData, CD_ORIGSPACE))
1331                                         DM_add_tessface_layer(dm, CD_ORIGSPACE, CD_DEFAULT, NULL);
1332
1333                         ndm = mti->applyModifier(md, ob, dm, useRenderParams, useCache);
1334
1335                         if(ndm) {
1336                                 /* if the modifier returned a new dm, release the old one */
1337                                 if(dm && dm != ndm) dm->release(dm);
1338
1339                                 dm = ndm;
1340
1341                                 if(deformedVerts) {
1342                                         if(deformedVerts != inputVertexCos)
1343                                                 MEM_freeN(deformedVerts);
1344
1345                                         deformedVerts = NULL;
1346                                 }
1347                         } 
1348
1349                         /* create an orco derivedmesh in parallel */
1350                         if(nextmask & CD_MASK_ORCO) {
1351                                 if(!orcodm)
1352                                         orcodm= create_orco_dm(ob, me, NULL, CD_ORCO);
1353
1354                                 nextmask &= ~CD_MASK_ORCO;
1355                                 DM_set_only_copy(orcodm, nextmask | CD_MASK_ORIGINDEX);
1356                                 ndm = mti->applyModifier(md, ob, orcodm, useRenderParams, 0);
1357
1358                                 if(ndm) {
1359                                         /* if the modifier returned a new dm, release the old one */
1360                                         if(orcodm && orcodm != ndm) orcodm->release(orcodm);
1361                                         orcodm = ndm;
1362                                 }
1363                         }
1364
1365                         /* create cloth orco derivedmesh in parallel */
1366                         if(nextmask & CD_MASK_CLOTH_ORCO) {
1367                                 if(!clothorcodm)
1368                                         clothorcodm= create_orco_dm(ob, me, NULL, CD_CLOTH_ORCO);
1369
1370                                 nextmask &= ~CD_MASK_CLOTH_ORCO;
1371                                 DM_set_only_copy(clothorcodm, nextmask | CD_MASK_ORIGINDEX);
1372                                 ndm = mti->applyModifier(md, ob, clothorcodm, useRenderParams, 0);
1373
1374                                 if(ndm) {
1375                                         /* if the modifier returned a new dm, release the old one */
1376                                         if(clothorcodm && clothorcodm != ndm) clothorcodm->release(clothorcodm);
1377                                         clothorcodm = ndm;
1378                                 }
1379                         }
1380
1381                         /* in case of dynamic paint, make sure preview mask remains for following modifiers */
1382                         if (md->type == eModifierType_DynamicPaint)
1383                                 append_mask |= CD_MASK_WEIGHT_MCOL;
1384                 }
1385
1386                 isPrevDeform= (mti->type == eModifierTypeType_OnlyDeform);
1387
1388                 /* grab modifiers until index i */
1389                 if((index >= 0) && (modifiers_indexInObject(ob, md) >= index))
1390                         break;
1391
1392                 if(sculpt_mode && md->type == eModifierType_Multires)
1393                         multires_applied = 1;
1394         }
1395
1396         for(md=firstmd; md; md=md->next)
1397                 modifier_freeTemporaryData(md);
1398
1399         /* Yay, we are done. If we have a DerivedMesh and deformed vertices
1400          * need to apply these back onto the DerivedMesh. If we have no
1401          * DerivedMesh then we need to build one.
1402          */
1403         if(dm && deformedVerts) {
1404                 finaldm = CDDM_copy(dm, 0);
1405
1406                 dm->release(dm);
1407
1408                 CDDM_apply_vert_coords(finaldm, deformedVerts);
1409                 CDDM_calc_normals(finaldm);
1410
1411                 if((dataMask & CD_MASK_WEIGHT_MCOL) && (ob->mode & OB_MODE_WEIGHT_PAINT))
1412                         add_weight_mcol_dm(ob, finaldm, draw_flag);
1413         } else if(dm) {
1414                 finaldm = dm;
1415         } else {
1416                 int recalc_normals= 0;
1417
1418                 finaldm = CDDM_from_mesh(me, ob);
1419                 
1420                 if(build_shapekey_layers) {
1421                         add_shapekey_layers(finaldm, me, ob);
1422                         recalc_normals= 1;
1423                 }
1424                 
1425                 if(deformedVerts) {
1426                         CDDM_apply_vert_coords(finaldm, deformedVerts);
1427                         recalc_normals= 1;
1428                 }
1429
1430                 if(recalc_normals)
1431                         CDDM_calc_normals(finaldm);
1432                 
1433                 if((dataMask & CD_MASK_WEIGHT_MCOL) && (ob->mode & OB_MODE_WEIGHT_PAINT))
1434                         add_weight_mcol_dm(ob, finaldm, draw_flag);
1435         }
1436
1437         /* add an orco layer if needed */
1438         if(dataMask & CD_MASK_ORCO) {
1439                 add_orco_dm(ob, NULL, finaldm, orcodm, CD_ORCO);
1440
1441                 if(deform_r && *deform_r)
1442                         add_orco_dm(ob, NULL, *deform_r, NULL, CD_ORCO);
1443         }
1444
1445 #ifdef WITH_GAMEENGINE
1446         /* NavMesh - this is a hack but saves having a NavMesh modifier */
1447         if ((ob->gameflag & OB_NAVMESH) && (finaldm->type == DM_TYPE_CDDM)) {
1448                 DerivedMesh *tdm;
1449                 tdm= navmesh_dm_createNavMeshForVisualization(finaldm);
1450                 if (finaldm != tdm) {
1451                         finaldm->release(finaldm);
1452                         finaldm= tdm;
1453                 }
1454         }
1455 #endif /* WITH_GAMEENGINE */
1456
1457         finaldm->calcNormals(finaldm);
1458
1459         *final_r = finaldm;
1460
1461         if(orcodm)
1462                 orcodm->release(orcodm);
1463         if(clothorcodm)
1464                 clothorcodm->release(clothorcodm);
1465
1466         if(deformedVerts && deformedVerts != inputVertexCos)
1467                 MEM_freeN(deformedVerts);
1468
1469         BLI_linklist_free(datamasks, NULL);
1470 }
1471
1472 float (*editbmesh_get_vertex_cos(BMEditMesh *em, int *numVerts_r))[3]
1473 {
1474         int i, numVerts = *numVerts_r = em->bm->totvert;
1475         float (*cos)[3];
1476         BMIter iter;
1477         BMVert *eve;
1478
1479         cos = MEM_mallocN(sizeof(float)*3*numVerts, "vertexcos");
1480
1481         eve = BMIter_New(&iter, em->bm, BM_VERTS_OF_MESH, NULL);
1482         for (i=0; eve; eve=BMIter_Step(&iter), i++) {
1483                 copy_v3_v3(cos[i], eve->co);
1484         }
1485
1486         return cos;
1487 }
1488
1489 int editbmesh_modifier_is_enabled(Scene *scene, ModifierData *md, DerivedMesh *dm)
1490 {
1491         ModifierTypeInfo *mti = modifierType_getInfo(md->type);
1492         int required_mode = eModifierMode_Realtime | eModifierMode_Editmode;
1493
1494         if(!modifier_isEnabled(scene, md, required_mode)) return 0;
1495         if((mti->flags & eModifierTypeFlag_RequiresOriginalData) && dm) {
1496                 modifier_setError(md, "Modifier requires original data, bad stack position.");
1497                 return 0;
1498         }
1499         
1500         return 1;
1501 }
1502
1503 static void editbmesh_calc_modifiers(Scene *scene, Object *ob, BMEditMesh *em, DerivedMesh **cage_r,
1504                                                                         DerivedMesh **final_r,
1505                                                                         CustomDataMask dataMask)
1506 {
1507         ModifierData *md;
1508         float (*deformedVerts)[3] = NULL;
1509         CustomDataMask mask;
1510         DerivedMesh *dm = NULL, *orcodm = NULL, *finaldm = NULL;
1511         int i, numVerts = 0, cageIndex = modifiers_getCageIndex(scene, ob, NULL, 1);
1512         LinkNode *datamasks, *curr;
1513         int required_mode = eModifierMode_Realtime | eModifierMode_Editmode;
1514
1515         modifiers_clearErrors(ob);
1516
1517         if(cage_r && cageIndex == -1) {
1518                 *cage_r = getEditDerivedBMesh(em, ob, NULL);
1519         }
1520
1521         md = modifiers_getVirtualModifierList(ob);
1522
1523         datamasks = modifiers_calcDataMasks(scene, ob, md, dataMask, required_mode);
1524
1525         curr = datamasks;
1526         for(i = 0; md; i++, md = md->next, curr = curr->next) {
1527                 ModifierTypeInfo *mti = modifierType_getInfo(md->type);
1528
1529                 md->scene= scene;
1530                 
1531                 if(!editbmesh_modifier_is_enabled(scene, md, dm))
1532                         continue;
1533
1534                 /* add an orco layer if needed by this modifier */
1535                 if(dm && mti->requiredDataMask) {
1536                         mask = mti->requiredDataMask(ob, md);
1537                         if(mask & CD_MASK_ORCO)
1538                                 add_orco_dm(ob, em, dm, orcodm, CD_ORCO);
1539                 }
1540
1541                 /* How to apply modifier depends on (a) what we already have as
1542                  * a result of previous modifiers (could be a DerivedMesh or just
1543                  * deformed vertices) and (b) what type the modifier is.
1544                  */
1545
1546                 if(mti->type == eModifierTypeType_OnlyDeform) {
1547                         /* No existing verts to deform, need to build them. */
1548                         if(!deformedVerts) {
1549                                 if(dm) {
1550                                         /* Deforming a derived mesh, read the vertex locations
1551                                          * out of the mesh and deform them. Once done with this
1552                                          * run of deformers verts will be written back.
1553                                          */
1554                                         numVerts = dm->getNumVerts(dm);
1555                                         deformedVerts =
1556                                                 MEM_mallocN(sizeof(*deformedVerts) * numVerts, "dfmv");
1557                                         dm->getVertCos(dm, deformedVerts);
1558                                 } else {
1559                                         deformedVerts = editbmesh_get_vertex_cos(em, &numVerts);
1560                                 }
1561                         }
1562
1563                         if (mti->deformVertsEM)
1564                                 mti->deformVertsEM(md, ob, em, dm, deformedVerts, numVerts);
1565                         else mti->deformVerts(md, ob, dm, deformedVerts, numVerts, 0, 0);
1566                 } else {
1567                         DerivedMesh *ndm;
1568
1569                         /* apply vertex coordinates or build a DerivedMesh as necessary */
1570                         if(dm) {
1571                                 if(deformedVerts) {
1572                                         DerivedMesh *tdm = CDDM_copy(dm, 0);
1573                                         if(!(cage_r && dm == *cage_r)) dm->release(dm);
1574                                         dm = tdm;
1575
1576                                         CDDM_apply_vert_coords(dm, deformedVerts);
1577                                         CDDM_calc_normals(dm);
1578                                 } else if(cage_r && dm == *cage_r) {
1579                                         /* dm may be changed by this modifier, so we need to copy it
1580                                          */
1581                                         dm = CDDM_copy(dm, 0);
1582                                 }
1583
1584                         } else {
1585                                 dm = CDDM_from_BMEditMesh(em, ob->data, 0);
1586
1587                                 if(deformedVerts) {
1588                                         CDDM_apply_vert_coords(dm, deformedVerts);
1589                                         CDDM_calc_normals(dm);
1590                                 }
1591                         }
1592
1593                         /* create an orco derivedmesh in parallel */
1594                         mask= (CustomDataMask)GET_INT_FROM_POINTER(curr->link);
1595                         if(mask & CD_MASK_ORCO) {
1596                                 if(!orcodm)
1597                                         orcodm= create_orco_dm(ob, ob->data, em, CD_ORCO);
1598
1599                                 mask &= ~CD_MASK_ORCO;
1600                                 DM_set_only_copy(orcodm, mask | CD_MASK_ORIGINDEX);
1601
1602                                 if (mti->applyModifierEM)
1603                                         ndm = mti->applyModifierEM(md, ob, em, orcodm);
1604                                 else
1605                                         ndm = mti->applyModifier(md, ob, orcodm, 0, 0);
1606
1607                                 if(ndm) {
1608                                         /* if the modifier returned a new dm, release the old one */
1609                                         if(orcodm && orcodm != ndm) orcodm->release(orcodm);
1610                                         orcodm = ndm;
1611                                 }
1612                         }
1613
1614                         /* set the DerivedMesh to only copy needed data */
1615                         mask= (CustomDataMask)GET_INT_FROM_POINTER(curr->link); /* CD_MASK_ORCO may have been cleared above */
1616
1617                         DM_set_only_copy(dm, mask | CD_MASK_ORIGINDEX);
1618
1619                         if(mask & CD_MASK_ORIGSPACE)
1620                                 if(!CustomData_has_layer(&dm->faceData, CD_ORIGSPACE))
1621                                         DM_add_tessface_layer(dm, CD_ORIGSPACE, CD_DEFAULT, NULL);
1622                         
1623                         if (mti->applyModifierEM)
1624                                 ndm = mti->applyModifierEM(md, ob, em, dm);
1625                         else
1626                                 ndm = mti->applyModifier(md, ob, dm, 0, 0);
1627
1628                         if (ndm) {
1629                                 if(dm && dm != ndm)
1630                                         dm->release(dm);
1631
1632                                 dm = ndm;
1633
1634                                 if (deformedVerts) {
1635                                         MEM_freeN(deformedVerts);
1636                                         deformedVerts = NULL;
1637                                 }
1638                         }
1639                 }
1640
1641                 if(cage_r && i == cageIndex) {
1642                         if(dm && deformedVerts) {
1643                                 *cage_r = CDDM_copy(dm, 0);
1644                                 CDDM_apply_vert_coords(*cage_r, deformedVerts);
1645                         } else if(dm) {
1646                                 *cage_r = dm;
1647                         } else {
1648                                 *cage_r =
1649                                         getEditDerivedBMesh(em, ob,
1650                                                 deformedVerts ? MEM_dupallocN(deformedVerts) : NULL);
1651                         }
1652                 }
1653         }
1654
1655         BLI_linklist_free(datamasks, NULL);
1656
1657         /* Yay, we are done. If we have a DerivedMesh and deformed vertices need
1658          * to apply these back onto the DerivedMesh. If we have no DerivedMesh
1659          * then we need to build one.
1660          */
1661         if(dm && deformedVerts) {
1662                 finaldm = CDDM_copy(dm, 0);
1663
1664                 if(!(cage_r && dm == *cage_r)) dm->release(dm);
1665
1666                 CDDM_apply_vert_coords(*final_r, deformedVerts);
1667         } else if (dm) {
1668                 finaldm = dm;
1669         } else if (!deformedVerts && cage_r && *cage_r) {
1670                 finaldm = *cage_r;
1671         } else {
1672                 finaldm = getEditDerivedBMesh(em, ob, deformedVerts);
1673                 deformedVerts = NULL;
1674         }
1675
1676         finaldm->calcNormals(finaldm);
1677
1678         *final_r = finaldm;
1679
1680         /* add an orco layer if needed */
1681         if(dataMask & CD_MASK_ORCO)
1682                 add_orco_dm(ob, em, *final_r, orcodm, CD_ORCO);
1683
1684         if(orcodm)
1685                 orcodm->release(orcodm);
1686
1687         if(deformedVerts)
1688                 MEM_freeN(deformedVerts);
1689 }
1690
1691 static void clear_mesh_caches(Object *ob)
1692 {
1693         Mesh *me= ob->data;
1694
1695                 /* also serves as signal to remake texspace */
1696         if (ob->bb) {
1697                 MEM_freeN(ob->bb);
1698                 ob->bb = NULL;
1699         }
1700         if (me->bb) {
1701                 MEM_freeN(me->bb);
1702                 me->bb = NULL;
1703         }
1704
1705         freedisplist(&ob->disp);
1706
1707         if (ob->derivedFinal) {
1708                 ob->derivedFinal->needsFree = 1;
1709                 ob->derivedFinal->release(ob->derivedFinal);
1710                 ob->derivedFinal= NULL;
1711         }
1712         if (ob->derivedDeform) {
1713                 ob->derivedDeform->needsFree = 1;
1714                 ob->derivedDeform->release(ob->derivedDeform);
1715                 ob->derivedDeform= NULL;
1716         }
1717
1718         if(ob->sculpt) {
1719                 object_sculpt_modifiers_changed(ob);
1720         }
1721 }
1722
1723 static void mesh_build_data(Scene *scene, Object *ob, CustomDataMask dataMask,
1724         int build_shapekey_layers)
1725 {
1726         Object *obact = scene->basact?scene->basact->object:NULL;
1727         int editing = paint_facesel_test(ob);
1728         /* weight paint and face select need original indices because of selection buffer drawing */
1729         int needMapping = (ob==obact) && (editing || (ob->mode & (OB_MODE_WEIGHT_PAINT|OB_MODE_VERTEX_PAINT|OB_MODE_TEXTURE_PAINT)));
1730
1731         clear_mesh_caches(ob);
1732
1733         mesh_calc_modifiers(scene, ob, NULL, &ob->derivedDeform,
1734                                                 &ob->derivedFinal, 0, 1,
1735                                                 needMapping, dataMask, -1, 1, build_shapekey_layers);
1736
1737         DM_set_object_boundbox (ob, ob->derivedFinal);
1738
1739         ob->derivedFinal->needsFree = 0;
1740         ob->derivedDeform->needsFree = 0;
1741         ob->lastDataMask = dataMask;
1742 }
1743
1744 static void editbmesh_build_data(Scene *scene, Object *obedit, BMEditMesh *em, CustomDataMask dataMask)
1745 {
1746         clear_mesh_caches(obedit);
1747
1748         if (em->derivedFinal) {
1749                 if (em->derivedFinal!=em->derivedCage) {
1750                         em->derivedFinal->needsFree = 1;
1751                         em->derivedFinal->release(em->derivedFinal);
1752                 }
1753                 em->derivedFinal = NULL;
1754         }
1755         if (em->derivedCage) {
1756                 em->derivedCage->needsFree = 1;
1757                 em->derivedCage->release(em->derivedCage);
1758                 em->derivedCage = NULL;
1759         }
1760
1761         editbmesh_calc_modifiers(scene, obedit, em, &em->derivedCage, &em->derivedFinal, dataMask);
1762         DM_set_object_boundbox (obedit, em->derivedFinal);
1763
1764         em->lastDataMask = dataMask;
1765         em->derivedFinal->needsFree = 0;
1766         em->derivedCage->needsFree = 0;
1767 }
1768
1769 void makeDerivedMesh(Scene *scene, Object *ob, BMEditMesh *em,
1770         CustomDataMask dataMask, int build_shapekey_layers)
1771 {
1772         if (em) {
1773                 editbmesh_build_data(scene, ob, em, dataMask);
1774         } else {
1775                 mesh_build_data(scene, ob, dataMask, build_shapekey_layers);
1776         }
1777 }
1778
1779 /***/
1780
1781 DerivedMesh *mesh_get_derived_final(Scene *scene, Object *ob, CustomDataMask dataMask)
1782 {
1783         /* if there's no derived mesh or the last data mask used doesn't include
1784          * the data we need, rebuild the derived mesh
1785          */
1786         if(!ob->derivedFinal || (dataMask & ob->lastDataMask) != dataMask)
1787                 mesh_build_data(scene, ob, dataMask, 0);
1788
1789         return ob->derivedFinal;
1790 }
1791
1792 DerivedMesh *mesh_get_derived_deform(Scene *scene, Object *ob, CustomDataMask dataMask)
1793 {
1794         /* if there's no derived mesh or the last data mask used doesn't include
1795          * the data we need, rebuild the derived mesh
1796          */
1797         if(!ob->derivedDeform || (dataMask & ob->lastDataMask) != dataMask)
1798                 mesh_build_data(scene, ob, dataMask, 0);
1799
1800         return ob->derivedDeform;
1801 }
1802
1803 DerivedMesh *mesh_create_derived_render(Scene *scene, Object *ob, CustomDataMask dataMask)
1804 {
1805         DerivedMesh *final;
1806         
1807         mesh_calc_modifiers(scene, ob, NULL, NULL, &final, 1, 1, 0, dataMask, -1, 0, 0);
1808
1809         return final;
1810 }
1811
1812 DerivedMesh *mesh_create_derived_index_render(Scene *scene, Object *ob, CustomDataMask dataMask, int index)
1813 {
1814         DerivedMesh *final;
1815         
1816         mesh_calc_modifiers(scene, ob, NULL, NULL, &final, 1, 1, 0, dataMask, index, 0, 0);
1817
1818         return final;
1819 }
1820
1821 DerivedMesh *mesh_create_derived_view(Scene *scene, Object *ob, CustomDataMask dataMask)
1822 {
1823         DerivedMesh *final;
1824
1825         mesh_calc_modifiers(scene, ob, NULL, NULL, &final, 0, 1, 0, dataMask, -1, 0, 0);
1826
1827         return final;
1828 }
1829
1830 DerivedMesh *mesh_create_derived_no_deform(Scene *scene, Object *ob, float (*vertCos)[3],
1831                                                                                    CustomDataMask dataMask)
1832 {
1833         DerivedMesh *final;
1834         
1835         mesh_calc_modifiers(scene, ob, vertCos, NULL, &final, 0, 0, 0, dataMask, -1, 0, 0);
1836
1837         return final;
1838 }
1839
1840 DerivedMesh *mesh_create_derived_no_virtual(Scene *scene, Object *ob, float (*vertCos)[3],
1841                                                                                         CustomDataMask dataMask)
1842 {
1843         DerivedMesh *final;
1844         
1845         mesh_calc_modifiers(scene, ob, vertCos, NULL, &final, 0, -1, 0, dataMask, -1, 0, 0);
1846
1847         return final;
1848 }
1849
1850 DerivedMesh *mesh_create_derived_physics(Scene *scene, Object *ob, float (*vertCos)[3],
1851                                                                                         CustomDataMask dataMask)
1852 {
1853         DerivedMesh *final;
1854         
1855         mesh_calc_modifiers(scene, ob, vertCos, NULL, &final, 0, -1, 1, dataMask, -1, 0, 0);
1856
1857         return final;
1858 }
1859
1860 DerivedMesh *mesh_create_derived_no_deform_render(Scene *scene, Object *ob,
1861                                                                                                   float (*vertCos)[3],
1862                                                                                                   CustomDataMask dataMask)
1863 {
1864         DerivedMesh *final;
1865
1866         mesh_calc_modifiers(scene, ob, vertCos, NULL, &final, 1, 0, 0, dataMask, -1, 0, 0);
1867
1868         return final;
1869 }
1870
1871 /***/
1872
1873 DerivedMesh *editbmesh_get_derived_cage_and_final(Scene *scene, Object *obedit, BMEditMesh *em, DerivedMesh **final_r,
1874                                                                                                  CustomDataMask dataMask)
1875 {
1876         /* if there's no derived mesh or the last data mask used doesn't include
1877          * the data we need, rebuild the derived mesh
1878          */
1879         if(!em->derivedCage ||
1880            (em->lastDataMask & dataMask) != dataMask)
1881                 editbmesh_build_data(scene, obedit, em, dataMask);
1882
1883         *final_r = em->derivedFinal;
1884         return em->derivedCage;
1885 }
1886
1887 DerivedMesh *editbmesh_get_derived_cage(Scene *scene, Object *obedit, BMEditMesh *em, CustomDataMask dataMask)
1888 {
1889         /* if there's no derived mesh or the last data mask used doesn't include
1890          * the data we need, rebuild the derived mesh
1891          */
1892         if(!em->derivedCage ||
1893            (em->lastDataMask & dataMask) != dataMask)
1894                 editbmesh_build_data(scene, obedit, em, dataMask);
1895
1896         return em->derivedCage;
1897 }
1898
1899 DerivedMesh *editbmesh_get_derived_base(Object *obedit, BMEditMesh *em)
1900 {
1901         return getEditDerivedBMesh(em, obedit, NULL);
1902 }
1903
1904
1905 /* ********* For those who don't grasp derived stuff! (ton) :) *************** */
1906
1907 static void make_vertexcosnos__mapFunc(void *userData, int index, float *co, float *no_f, short *no_s)
1908 {
1909         float *vec = userData;
1910         
1911         vec+= 6*index;
1912
1913         /* check if we've been here before (normal should not be 0) */
1914         if(vec[3] || vec[4] || vec[5]) return;
1915
1916         copy_v3_v3(vec, co);
1917         vec+= 3;
1918         if(no_f) {
1919                 copy_v3_v3(vec, no_f);
1920         }
1921         else {
1922                 normal_short_to_float_v3(vec, no_s);
1923         }
1924 }
1925
1926 /* always returns original amount me->totvert of vertices and normals, but fully deformed and subsurfered */
1927 /* this is needed for all code using vertexgroups (no subsurf support) */
1928 /* it stores the normals as floats, but they can still be scaled as shorts (32767 = unit) */
1929 /* in use now by vertex/weight paint and particle generating */
1930
1931 float *mesh_get_mapped_verts_nors(Scene *scene, Object *ob)
1932 {
1933         Mesh *me= ob->data;
1934         DerivedMesh *dm;
1935         float *vertexcosnos;
1936         
1937         /* lets prevent crashing... */
1938         if(ob->type!=OB_MESH || me->totvert==0)
1939                 return NULL;
1940         
1941         dm= mesh_get_derived_final(scene, ob, CD_MASK_BAREMESH|CD_MASK_ORIGINDEX);
1942         vertexcosnos= MEM_callocN(6*sizeof(float)*me->totvert, "vertexcosnos map");
1943         
1944         if(dm->foreachMappedVert) {
1945                 dm->foreachMappedVert(dm, make_vertexcosnos__mapFunc, vertexcosnos);
1946         }
1947         else {
1948                 float *fp= vertexcosnos;
1949                 int a;
1950                 
1951                 for(a=0; a< me->totvert; a++, fp+=6) {
1952                         dm->getVertCo(dm, a, fp);
1953                         dm->getVertNo(dm, a, fp+3);
1954                 }
1955         }
1956         
1957         dm->release(dm);
1958         return vertexcosnos;
1959 }
1960
1961 /* ******************* GLSL ******************** */
1962
1963 typedef struct
1964 {
1965         float * precomputedFaceNormals;
1966         MTFace * mtface;        // texture coordinates
1967         MFace * mface;          // indices
1968         MVert * mvert;          // vertices & normals
1969         float (*orco)[3];
1970         float (*tangent)[4];    // destination
1971         int numFaces;
1972
1973 } SGLSLMeshToTangent;
1974
1975 // interface
1976 #include "mikktspace.h"
1977
1978 static int GetNumFaces(const SMikkTSpaceContext * pContext)
1979 {
1980         SGLSLMeshToTangent * pMesh = (SGLSLMeshToTangent *) pContext->m_pUserData;
1981         return pMesh->numFaces;
1982 }
1983
1984 static int GetNumVertsOfFace(const SMikkTSpaceContext * pContext, const int face_num)
1985 {
1986         SGLSLMeshToTangent * pMesh = (SGLSLMeshToTangent *) pContext->m_pUserData;
1987         return pMesh->mface[face_num].v4!=0 ? 4 : 3;
1988 }
1989
1990 static void GetPosition(const SMikkTSpaceContext * pContext, float fPos[], const int face_num, const int vert_index)
1991 {
1992         //assert(vert_index>=0 && vert_index<4);
1993         SGLSLMeshToTangent * pMesh = (SGLSLMeshToTangent *) pContext->m_pUserData;
1994         const float *co= pMesh->mvert[(&pMesh->mface[face_num].v1)[vert_index]].co;
1995         copy_v3_v3(fPos, co);
1996 }
1997
1998 static void GetTextureCoordinate(const SMikkTSpaceContext * pContext, float fUV[], const int face_num, const int vert_index)
1999 {
2000         //assert(vert_index>=0 && vert_index<4);
2001         SGLSLMeshToTangent * pMesh = (SGLSLMeshToTangent *) pContext->m_pUserData;
2002
2003         if(pMesh->mtface!=NULL) {
2004                 float * uv = pMesh->mtface[face_num].uv[vert_index];
2005                 fUV[0]=uv[0]; fUV[1]=uv[1];
2006         }
2007         else {
2008                 const float *orco= pMesh->orco[(&pMesh->mface[face_num].v1)[vert_index]];
2009                 map_to_sphere( &fUV[0], &fUV[1], orco[0], orco[1], orco[2]);
2010         }
2011 }
2012
2013 static void GetNormal(const SMikkTSpaceContext * pContext, float fNorm[], const int face_num, const int vert_index)
2014 {
2015         //assert(vert_index>=0 && vert_index<4);
2016         SGLSLMeshToTangent * pMesh = (SGLSLMeshToTangent *) pContext->m_pUserData;
2017
2018         const int smoothnormal = (pMesh->mface[face_num].flag & ME_SMOOTH);
2019         if(!smoothnormal) {     // flat
2020                 if(pMesh->precomputedFaceNormals) {
2021                         copy_v3_v3(fNorm, &pMesh->precomputedFaceNormals[3*face_num]);
2022                 }
2023                 else {
2024                         MFace *mf= &pMesh->mface[face_num];
2025                         float *p0= pMesh->mvert[mf->v1].co;
2026                         float *p1= pMesh->mvert[mf->v2].co;
2027                         float *p2= pMesh->mvert[mf->v3].co;
2028
2029                         if(mf->v4) {
2030                                 float *p3 = pMesh->mvert[mf->v4].co;
2031                                 normal_quad_v3(fNorm, p0, p1, p2, p3);
2032                         }
2033                         else {
2034                                 normal_tri_v3(fNorm, p0, p1, p2);
2035                         }
2036                 }
2037         }
2038         else {
2039                 const short *no= pMesh->mvert[(&pMesh->mface[face_num].v1)[vert_index]].no;
2040                 normal_short_to_float_v3(fNorm, no);
2041         }
2042 }
2043 static void SetTSpace(const SMikkTSpaceContext * pContext, const float fvTangent[], const float fSign, const int face_num, const int iVert)
2044 {
2045         //assert(vert_index>=0 && vert_index<4);
2046         SGLSLMeshToTangent * pMesh = (SGLSLMeshToTangent *) pContext->m_pUserData;
2047         float * pRes = pMesh->tangent[4*face_num+iVert];
2048         copy_v3_v3(pRes, fvTangent);
2049         pRes[3]=fSign;
2050 }
2051
2052
2053 void DM_add_tangent_layer(DerivedMesh *dm)
2054 {
2055         /* mesh vars */
2056         MTFace *mtface, *tf;
2057         MFace *mface, *mf;
2058         MVert *mvert, *v1, *v2, *v3, *v4;
2059         MemArena *arena= NULL;
2060         VertexTangent **vtangents= NULL;
2061         float (*orco)[3]= NULL, (*tangent)[4];
2062         float *uv1, *uv2, *uv3, *uv4, *vtang;
2063         float fno[3], tang[3], uv[4][2];
2064         int i, j, len, mf_vi[4], totvert, totface, iCalcNewMethod;
2065         float *nors;
2066
2067         if(CustomData_get_layer_index(&dm->faceData, CD_TANGENT) != -1)
2068                 return;
2069
2070         nors = dm->getTessFaceDataArray(dm, CD_NORMAL);
2071
2072         /* check we have all the needed layers */
2073         totvert= dm->getNumVerts(dm);
2074         totface= dm->getNumTessFaces(dm);
2075
2076         mvert= dm->getVertArray(dm);
2077         mface= dm->getTessFaceArray(dm);
2078         mtface= dm->getTessFaceDataArray(dm, CD_MTFACE);
2079
2080         if(!mtface) {
2081                 orco= dm->getVertDataArray(dm, CD_ORCO);
2082                 if(!orco)
2083                         return;
2084         }
2085         
2086         /* create tangent layer */
2087         DM_add_tessface_layer(dm, CD_TANGENT, CD_CALLOC, NULL);
2088         tangent= DM_get_tessface_data_layer(dm, CD_TANGENT);
2089         
2090         /* allocate some space */
2091         arena= BLI_memarena_new(BLI_MEMARENA_STD_BUFSIZE, "tangent layer arena");
2092         BLI_memarena_use_calloc(arena);
2093         vtangents= MEM_callocN(sizeof(VertexTangent*)*totvert, "VertexTangent");
2094
2095         // new computation method
2096         iCalcNewMethod = 1;
2097         if(iCalcNewMethod != 0) {
2098                 SGLSLMeshToTangent mesh2tangent= {0};
2099                 SMikkTSpaceContext sContext= {0};
2100                 SMikkTSpaceInterface sInterface= {0};
2101
2102                 mesh2tangent.precomputedFaceNormals = nors;
2103                 mesh2tangent.mtface = mtface;
2104                 mesh2tangent.mface = mface;
2105                 mesh2tangent.mvert = mvert;
2106                 mesh2tangent.orco = orco;
2107                 mesh2tangent.tangent = tangent;
2108                 mesh2tangent.numFaces = totface;
2109
2110                 sContext.m_pUserData = &mesh2tangent;
2111                 sContext.m_pInterface = &sInterface;
2112                 sInterface.m_getNumFaces = GetNumFaces;
2113                 sInterface.m_getNumVerticesOfFace = GetNumVertsOfFace;
2114                 sInterface.m_getPosition = GetPosition;
2115                 sInterface.m_getTexCoord = GetTextureCoordinate;
2116                 sInterface.m_getNormal = GetNormal;
2117                 sInterface.m_setTSpaceBasic = SetTSpace;
2118
2119                 // 0 if failed
2120                 iCalcNewMethod = genTangSpaceDefault(&sContext);
2121         }
2122
2123         if(!iCalcNewMethod) {
2124                 /* sum tangents at connected vertices */
2125                 for(i=0, tf=mtface, mf=mface; i < totface; mf++, tf++, i++) {
2126                         v1= &mvert[mf->v1];
2127                         v2= &mvert[mf->v2];
2128                         v3= &mvert[mf->v3];
2129
2130                         if (mf->v4) {
2131                                 v4= &mvert[mf->v4];
2132                                 normal_quad_v3( fno,v4->co, v3->co, v2->co, v1->co);
2133                         }
2134                         else {
2135                                 v4= NULL;
2136                                 normal_tri_v3( fno,v3->co, v2->co, v1->co);
2137                         }
2138                 
2139                         if(mtface) {
2140                                 uv1= tf->uv[0];
2141                                 uv2= tf->uv[1];
2142                                 uv3= tf->uv[2];
2143                                 uv4= tf->uv[3];
2144                         }
2145                         else {
2146                                 uv1= uv[0]; uv2= uv[1]; uv3= uv[2]; uv4= uv[3];
2147                                 map_to_sphere( &uv[0][0], &uv[0][1],orco[mf->v1][0], orco[mf->v1][1], orco[mf->v1][2]);
2148                                 map_to_sphere( &uv[1][0], &uv[1][1],orco[mf->v2][0], orco[mf->v2][1], orco[mf->v2][2]);
2149                                 map_to_sphere( &uv[2][0], &uv[2][1],orco[mf->v3][0], orco[mf->v3][1], orco[mf->v3][2]);
2150                                 if(v4)
2151                                         map_to_sphere( &uv[3][0], &uv[3][1],orco[mf->v4][0], orco[mf->v4][1], orco[mf->v4][2]);
2152                         }
2153                 
2154                         tangent_from_uv(uv1, uv2, uv3, v1->co, v2->co, v3->co, fno, tang);
2155                         sum_or_add_vertex_tangent(arena, &vtangents[mf->v1], tang, uv1);
2156                         sum_or_add_vertex_tangent(arena, &vtangents[mf->v2], tang, uv2);
2157                         sum_or_add_vertex_tangent(arena, &vtangents[mf->v3], tang, uv3);
2158                 
2159                         if(mf->v4) {
2160                                 v4= &mvert[mf->v4];
2161                         
2162                                 tangent_from_uv(uv1, uv3, uv4, v1->co, v3->co, v4->co, fno, tang);
2163                                 sum_or_add_vertex_tangent(arena, &vtangents[mf->v1], tang, uv1);
2164                                 sum_or_add_vertex_tangent(arena, &vtangents[mf->v3], tang, uv3);
2165                                 sum_or_add_vertex_tangent(arena, &vtangents[mf->v4], tang, uv4);
2166                         }
2167                 }
2168         
2169                 /* write tangent to layer */
2170                 for(i=0, tf=mtface, mf=mface; i < totface; mf++, tf++, i++, tangent+=4) {
2171                         len= (mf->v4)? 4 : 3; 
2172
2173                         if(mtface == NULL) {
2174                                 map_to_sphere( &uv[0][0], &uv[0][1],orco[mf->v1][0], orco[mf->v1][1], orco[mf->v1][2]);
2175                                 map_to_sphere( &uv[1][0], &uv[1][1],orco[mf->v2][0], orco[mf->v2][1], orco[mf->v2][2]);
2176                                 map_to_sphere( &uv[2][0], &uv[2][1],orco[mf->v3][0], orco[mf->v3][1], orco[mf->v3][2]);
2177                                 if(len==4)
2178                                         map_to_sphere( &uv[3][0], &uv[3][1],orco[mf->v4][0], orco[mf->v4][1], orco[mf->v4][2]);
2179                         }
2180                 
2181                         mf_vi[0]= mf->v1;
2182                         mf_vi[1]= mf->v2;
2183                         mf_vi[2]= mf->v3;
2184                         mf_vi[3]= mf->v4;
2185                 
2186                         for(j=0; j<len; j++) {
2187                                 vtang= find_vertex_tangent(vtangents[mf_vi[j]], mtface ? tf->uv[j] : uv[j]);
2188                                 normalize_v3_v3(tangent[j], vtang);
2189                                 ((float *) tangent[j])[3]=1.0f;
2190                         }
2191                 }
2192         }
2193         
2194         BLI_memarena_free(arena);
2195         MEM_freeN(vtangents);
2196 }
2197
2198 void DM_vertex_attributes_from_gpu(DerivedMesh *dm, GPUVertexAttribs *gattribs, DMVertexAttribs *attribs)
2199 {
2200         CustomData *vdata, *fdata, *tfdata = NULL;
2201         int a, b, layer;
2202
2203         /* From the layers requested by the GLSL shader, figure out which ones are
2204          * actually available for this derivedmesh, and retrieve the pointers */
2205
2206         memset(attribs, 0, sizeof(DMVertexAttribs));
2207
2208         vdata = &dm->vertData;
2209         fdata = tfdata = dm->getTessFaceDataLayout(dm);
2210         
2211         /* add a tangent layer if necessary */
2212         for(b = 0; b < gattribs->totlayer; b++)
2213                 if(gattribs->layer[b].type == CD_TANGENT)
2214                         if(CustomData_get_layer_index(fdata, CD_TANGENT) == -1)
2215                                 DM_add_tangent_layer(dm);
2216
2217         for(b = 0; b < gattribs->totlayer; b++) {
2218                 if(gattribs->layer[b].type == CD_MTFACE) {
2219                         /* uv coordinates */
2220                         if(gattribs->layer[b].name[0])
2221                                 layer = CustomData_get_named_layer_index(tfdata, CD_MTFACE,
2222                                         gattribs->layer[b].name);
2223                         else
2224                                 layer = CustomData_get_active_layer_index(tfdata, CD_MTFACE);
2225
2226                         if(layer != -1) {
2227                                 a = attribs->tottface++;
2228
2229                                 attribs->tface[a].array = tfdata->layers[layer].data;
2230                                 attribs->tface[a].emOffset = tfdata->layers[layer].offset;
2231                                 attribs->tface[a].glIndex = gattribs->layer[b].glindex;
2232                         } /*else {
2233                                 int player;
2234                                 CustomData *pdata = dm->getFaceDataLayout(dm);
2235                                 
2236                                 if(gattribs->layer[b].name[0])
2237                                         player = CustomData_get_named_layer_index(pdata, CD_MTEXPOLY,
2238                                                 gattribs->layer[b].name);
2239                                 else
2240                                         player = CustomData_get_active_layer_index(pdata, CD_MTEXPOLY);
2241                                 
2242                                 if (player != -1) {
2243                                         a = attribs->tottface++;
2244         
2245                                         attribs->tface[a].array = NULL;
2246                                         attribs->tface[a].emOffset = pdata->layers[layer].offset;
2247                                         attribs->tface[a].glIndex = gattribs->layer[b].glindex;
2248                                         attribs->tface[a].glTexco = gattribs->layer[b].gltexco;
2249                                         
2250                                 }
2251                         }*/
2252                 }
2253                 else if(gattribs->layer[b].type == CD_MCOL) {
2254                         /* vertex colors */
2255                         if(gattribs->layer[b].name[0])
2256                                 layer = CustomData_get_named_layer_index(tfdata, CD_MCOL,
2257                                         gattribs->layer[b].name);
2258                         else
2259                                 layer = CustomData_get_active_layer_index(tfdata, CD_MCOL);
2260
2261                         if(layer != -1) {
2262                                 a = attribs->totmcol++;
2263
2264                                 attribs->mcol[a].array = tfdata->layers[layer].data;
2265                                 attribs->mcol[a].emOffset = tfdata->layers[layer].offset;
2266                                 attribs->mcol[a].glIndex = gattribs->layer[b].glindex;
2267                         }
2268                 }
2269                 else if(gattribs->layer[b].type == CD_TANGENT) {
2270                         /* tangents */
2271                         layer = CustomData_get_layer_index(fdata, CD_TANGENT);
2272
2273                         if(layer != -1) {
2274                                 attribs->tottang = 1;
2275
2276                                 attribs->tang.array = fdata->layers[layer].data;
2277                                 attribs->tang.emOffset = fdata->layers[layer].offset;
2278                                 attribs->tang.glIndex = gattribs->layer[b].glindex;
2279                         }
2280                 }
2281                 else if(gattribs->layer[b].type == CD_ORCO) {
2282                         /* original coordinates */
2283                         layer = CustomData_get_layer_index(vdata, CD_ORCO);
2284
2285                         if(layer != -1) {
2286                                 attribs->totorco = 1;
2287
2288                                 attribs->orco.array = vdata->layers[layer].data;
2289                                 attribs->orco.emOffset = vdata->layers[layer].offset;
2290                                 attribs->orco.glIndex = gattribs->layer[b].glindex;
2291                                 attribs->orco.glTexco = gattribs->layer[b].gltexco;
2292                         }
2293                 }
2294         }
2295 }
2296
2297 /* Set object's bounding box based on DerivedMesh min/max data */
2298 void DM_set_object_boundbox(Object *ob, DerivedMesh *dm)
2299 {
2300         float min[3], max[3];
2301
2302         INIT_MINMAX(min, max);
2303
2304         dm->getMinMax(dm, min, max);
2305
2306         if(!ob->bb)
2307                 ob->bb= MEM_callocN(sizeof(BoundBox), "DM-BoundBox");
2308
2309         boundbox_set_from_min_max(ob->bb, min, max);
2310 }
2311
2312 /* --- NAVMESH (begin) --- */
2313 #ifdef WITH_GAMEENGINE
2314
2315 BM_INLINE int navmesh_bit(int a, int b)
2316 {
2317         return (a & (1 << b)) >> b;
2318 }
2319
2320 BM_INLINE void navmesh_intToCol(int i, float col[3])
2321 {
2322         int     r = navmesh_bit(i, 0) + navmesh_bit(i, 3) * 2 + 1;
2323         int     g = navmesh_bit(i, 1) + navmesh_bit(i, 4) * 2 + 1;
2324         int     b = navmesh_bit(i, 2) + navmesh_bit(i, 5) * 2 + 1;
2325         col[0] = 1 - r*63.0f/255.0f;
2326         col[1] = 1 - g*63.0f/255.0f;
2327         col[2] = 1 - b*63.0f/255.0f;
2328 }
2329
2330 static void navmesh_drawColored(DerivedMesh *dm)
2331 {
2332         int a, glmode;
2333         MVert *mvert = (MVert *)CustomData_get_layer(&dm->vertData, CD_MVERT);
2334         MFace *mface = (MFace *)CustomData_get_layer(&dm->faceData, CD_MFACE);
2335         int *polygonIdx = (int *)CustomData_get_layer(&dm->faceData, CD_RECAST);
2336         float col[3];
2337
2338         if (!polygonIdx)
2339                 return;
2340
2341         /*
2342         //UI_ThemeColor(TH_WIRE);
2343         glDisable(GL_LIGHTING);
2344         glLineWidth(2.0);
2345         dm->drawEdges(dm, 0, 1);
2346         glLineWidth(1.0);
2347         glEnable(GL_LIGHTING);*/
2348
2349         glDisable(GL_LIGHTING);
2350         /*  if(GPU_buffer_legacy(dm) ) */ { /* TODO - VBO draw code, not high priority - campbell */
2351                 DEBUG_VBO( "Using legacy code. drawNavMeshColored\n" );
2352                 //glShadeModel(GL_SMOOTH);
2353                 glBegin(glmode = GL_QUADS);
2354                 for(a = 0; a < dm->numFaceData; a++, mface++) {
2355                         int new_glmode = mface->v4?GL_QUADS:GL_TRIANGLES;
2356                         int pi = polygonIdx[a];
2357                         if (pi <= 0) {
2358                                 zero_v3(col);
2359                         }
2360                         else {
2361                                 navmesh_intToCol(pi, col);
2362                         }
2363
2364                         if(new_glmode != glmode) {
2365                                 glEnd();
2366                                 glBegin(glmode = new_glmode);
2367                         }
2368                         glColor3fv(col);
2369                         glVertex3fv(mvert[mface->v1].co);
2370                         glVertex3fv(mvert[mface->v2].co);
2371                         glVertex3fv(mvert[mface->v3].co);
2372                         if(mface->v4) {
2373                                 glVertex3fv(mvert[mface->v4].co);
2374                         }
2375                 }
2376                 glEnd();
2377         }
2378         glEnable(GL_LIGHTING);
2379 }
2380
2381 static void navmesh_DM_drawFacesTex(DerivedMesh *dm, int (*setDrawOptions)(MTFace *tface, int has_mcol, int matnr))
2382 {
2383         (void) setDrawOptions;
2384
2385         navmesh_drawColored(dm);
2386 }
2387
2388 static void navmesh_DM_drawFacesSolid(DerivedMesh *dm,
2389                                       float (*partial_redraw_planes)[4],
2390                                       int UNUSED(fast), int (*setMaterial)(int, void *attribs))
2391 {
2392         (void) partial_redraw_planes;
2393         (void) setMaterial;
2394
2395         //drawFacesSolid_original(dm, partial_redraw_planes, fast, setMaterial);
2396         navmesh_drawColored(dm);
2397 }
2398
2399 static DerivedMesh *navmesh_dm_createNavMeshForVisualization(DerivedMesh *dm)
2400 {
2401         DerivedMesh *result;
2402         int maxFaces = dm->getNumFaces(dm);
2403         int *recastData;
2404         int vertsPerPoly=0, nverts=0, ndtris=0, npolys=0;
2405         float* verts=NULL;
2406         unsigned short *dtris=NULL, *dmeshes=NULL, *polys=NULL;
2407         int *dtrisToPolysMap=NULL, *dtrisToTrisMap=NULL, *trisToFacesMap=NULL;
2408         int res;
2409
2410         result = CDDM_copy(dm, 0);
2411         if (!CustomData_has_layer(&result->faceData, CD_RECAST)) {
2412                 int *sourceRecastData = (int*)CustomData_get_layer(&dm->faceData, CD_RECAST);
2413                 if (sourceRecastData) {
2414                         CustomData_add_layer_named(&result->faceData, CD_RECAST, CD_DUPLICATE,
2415                                                    sourceRecastData, maxFaces, "recastData");
2416                 }
2417         }
2418         recastData = (int*)CustomData_get_layer(&result->faceData, CD_RECAST);
2419
2420         /* note: This is not good design! - really should not be doing this */
2421         result->drawFacesTex =  navmesh_DM_drawFacesTex;
2422         result->drawFacesSolid = navmesh_DM_drawFacesSolid;
2423
2424
2425         /* process mesh */
2426         res  = buildNavMeshDataByDerivedMesh(dm, &vertsPerPoly, &nverts, &verts, &ndtris, &dtris,
2427                                              &npolys, &dmeshes, &polys, &dtrisToPolysMap, &dtrisToTrisMap,
2428                                              &trisToFacesMap);
2429         if (res) {
2430                 size_t polyIdx;
2431
2432                 /* invalidate concave polygon */
2433                 for (polyIdx=0; polyIdx<(size_t)npolys; polyIdx++) {
2434                         unsigned short* poly = &polys[polyIdx*2*vertsPerPoly];
2435                         if (!polyIsConvex(poly, vertsPerPoly, verts)) {
2436                                 /* set negative polygon idx to all faces */
2437                                 unsigned short *dmesh = &dmeshes[4*polyIdx];
2438                                 unsigned short tbase = dmesh[2];
2439                                 unsigned short tnum = dmesh[3];
2440                                 unsigned short ti;
2441
2442                                 for (ti=0; ti<tnum; ti++) {
2443                                         unsigned short triidx = dtrisToTrisMap[tbase+ti];
2444                                         unsigned short faceidx = trisToFacesMap[triidx];
2445                                         if (recastData[faceidx] > 0) {
2446                                                 recastData[faceidx] = -recastData[faceidx];
2447                                         }
2448                                 }
2449                         }
2450                 }
2451         }
2452         else {
2453                 printf("Error during creation polygon infos\n");
2454         }
2455
2456         /* clean up */
2457         if (verts!=NULL)
2458                 MEM_freeN(verts);
2459         if (dtris!=NULL)
2460                 MEM_freeN(dtris);
2461         if (dmeshes!=NULL)
2462                 MEM_freeN(dmeshes);
2463         if (polys!=NULL)
2464                 MEM_freeN(polys);
2465         if (dtrisToPolysMap!=NULL)
2466                 MEM_freeN(dtrisToPolysMap);
2467         if (dtrisToTrisMap!=NULL)
2468                 MEM_freeN(dtrisToTrisMap);
2469         if (trisToFacesMap!=NULL)
2470                 MEM_freeN(trisToFacesMap);
2471
2472         return result;
2473 }
2474
2475 #endif /* WITH_GAMEENGINE */
2476
2477 /* --- NAVMESH (end) --- */