Fix Blend From Shape having no effect after exiting edit mode.
[blender.git] / source / blender / editors / mesh / editmesh.c
1 /**
2  * $Id$
3  *
4  * ***** BEGIN GPL LICENSE BLOCK *****
5  *
6  * This program is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU General Public License
8  * as published by the Free Software Foundation; either version 2
9  * of the License, or (at your option) any later version.
10  *
11  * This program is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14  * GNU General Public License for more details.
15  *
16  * You should have received a copy of the GNU General Public License
17  * along with this program; if not, write to the Free Software Foundation,
18  * Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
19  *
20  * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
21  * All rights reserved.
22  *
23  * Contributor(s): Blender Foundation, full recode 2002-2008
24  *
25  * ***** END GPL LICENSE BLOCK *****
26  */
27
28
29 #include <stdlib.h>
30 #include <string.h>
31 #include <math.h>
32
33 #include "MEM_guardedalloc.h"
34
35 #include "PIL_time.h"
36
37 #include "DNA_customdata_types.h"
38 #include "DNA_mesh_types.h"
39 #include "DNA_meshdata_types.h"
40 #include "DNA_object_types.h"
41 #include "DNA_object_force.h"
42 #include "DNA_screen_types.h"
43 #include "DNA_key_types.h"
44 #include "DNA_scene_types.h"
45 #include "DNA_view3d_types.h"
46 #include "DNA_material_types.h"
47 #include "DNA_modifier_types.h"
48 #include "DNA_texture_types.h"
49 #include "DNA_userdef_types.h"
50
51 #include "BLI_blenlib.h"
52 #include "BLI_math.h"
53 #include "BLI_editVert.h"
54 #include "BLI_dynstr.h"
55 #include "BLI_rand.h"
56
57 #include "BKE_cloth.h"
58 #include "BKE_context.h"
59 #include "BKE_customdata.h"
60 #include "BKE_depsgraph.h"
61 #include "BKE_DerivedMesh.h"
62 #include "BKE_global.h"
63 #include "BKE_key.h"
64 #include "BKE_library.h"
65 #include "BKE_main.h"
66 #include "BKE_material.h"
67 #include "BKE_mesh.h"
68 #include "BKE_modifier.h"
69 #include "BKE_object.h"
70 #include "BKE_paint.h"
71 #include "BKE_pointcache.h"
72 #include "BKE_softbody.h"
73 #include "BKE_texture.h"
74 #include "BKE_utildefines.h"
75
76 #include "LBM_fluidsim.h"
77
78
79 #include "ED_mesh.h"
80 #include "ED_object.h"
81 #include "ED_retopo.h"
82 #include "ED_screen.h"
83 #include "ED_util.h"
84 #include "ED_view3d.h"
85
86 #include "RNA_access.h"
87 #include "RNA_define.h"
88
89 #include "WM_api.h"
90 #include "WM_types.h"
91
92 /* own include */
93 #include "mesh_intern.h"
94
95 /* 
96 editmesh.c:
97         - add/alloc/free data
98         - hashtables
99         - enter/exit editmode
100 */
101
102 /* XXX */
103 static void BIF_undo_push() {}
104 static void error() {}
105
106
107 /* ***************** HASH ********************* */
108
109
110 #define EDHASHSIZE              (512*512)
111 #define EDHASH(a, b)    (a % EDHASHSIZE)
112
113
114 /* ************ ADD / REMOVE / FIND ****************** */
115
116 static void *calloc_em(EditMesh *em, size_t size, size_t nr)
117 {
118         return calloc(size, nr);
119 }
120
121 /* used to bypass normal calloc with fast one */
122 static void *(*callocvert)(EditMesh *, size_t, size_t) = calloc_em;
123 static void *(*callocedge)(EditMesh *, size_t, size_t) = calloc_em;
124 static void *(*callocface)(EditMesh *, size_t, size_t) = calloc_em;
125
126 EditVert *addvertlist(EditMesh *em, float *vec, EditVert *example)
127 {
128         EditVert *eve;
129         static int hashnr= 0;
130
131         eve= callocvert(em, sizeof(EditVert), 1);
132         BLI_addtail(&em->verts, eve);
133         em->totvert++;
134         
135         if(vec) VECCOPY(eve->co, vec);
136
137         eve->hash= hashnr++;
138         if( hashnr>=EDHASHSIZE) hashnr= 0;
139
140         /* new verts get keyindex of -1 since they did not
141          * have a pre-editmode vertex order
142          */
143         eve->keyindex = -1;
144
145         if(example) {
146                 CustomData_em_copy_data(&em->vdata, &em->vdata, example->data, &eve->data);
147                 eve->bweight = example->bweight;
148         }
149         else {
150                 CustomData_em_set_default(&em->vdata, &eve->data);
151         }
152
153         return eve;
154 }
155
156 void free_editvert (EditMesh *em, EditVert *eve)
157 {
158
159         EM_remove_selection(em, eve, EDITVERT);
160         CustomData_em_free_block(&em->vdata, &eve->data);
161         if(eve->fast==0)
162                 free(eve);
163         
164         em->totvert--;
165 }
166
167
168 EditEdge *findedgelist(EditMesh *em, EditVert *v1, EditVert *v2)
169 {
170         EditVert *v3;
171         struct HashEdge *he;
172
173         /* swap ? */
174         if( v1 > v2) {
175                 v3= v2; 
176                 v2= v1; 
177                 v1= v3;
178         }
179         
180         if(em->hashedgetab==NULL)
181                 em->hashedgetab= MEM_callocN(EDHASHSIZE*sizeof(struct HashEdge), "hashedgetab");
182
183         he= em->hashedgetab + EDHASH(v1->hash, v2->hash);
184         
185         while(he) {
186                 
187                 if(he->eed && he->eed->v1==v1 && he->eed->v2==v2) return he->eed;
188                 
189                 he= he->next;
190         }
191         return 0;
192 }
193
194 static void insert_hashedge(EditMesh *em, EditEdge *eed)
195 {
196         /* assuming that eed is not in the list yet, and that a find has been done before */
197         
198         struct HashEdge *first, *he;
199
200         first= em->hashedgetab + EDHASH(eed->v1->hash, eed->v2->hash);
201
202         if( first->eed==0 ) {
203                 first->eed= eed;
204         }
205         else {
206                 he= &eed->hash; 
207                 he->eed= eed;
208                 he->next= first->next;
209                 first->next= he;
210         }
211 }
212
213 static void remove_hashedge(EditMesh *em, EditEdge *eed)
214 {
215         /* assuming eed is in the list */
216         
217         struct HashEdge *first, *he, *prev=NULL;
218
219         he=first= em->hashedgetab + EDHASH(eed->v1->hash, eed->v2->hash);
220
221         while(he) {
222                 if(he->eed == eed) {
223                         /* remove from list */
224                         if(he==first) {
225                                 if(first->next) {
226                                         he= first->next;
227                                         first->eed= he->eed;
228                                         first->next= he->next;
229                                 }
230                                 else he->eed= 0;
231                         }
232                         else {
233                                 prev->next= he->next;
234                         }
235                         return;
236                 }
237                 prev= he;
238                 he= he->next;
239         }
240 }
241
242 EditEdge *addedgelist(EditMesh *em, EditVert *v1, EditVert *v2, EditEdge *example)
243 {
244         EditVert *v3;
245         EditEdge *eed;
246         int swap= 0;
247         
248         if(v1==v2) return NULL;
249         if(v1==NULL || v2==NULL) return NULL;
250
251         /* swap ? */
252         if(v1>v2) {
253                 v3= v2; 
254                 v2= v1; 
255                 v1= v3;
256                 swap= 1;
257         }
258         
259         /* find in hashlist */
260         eed= findedgelist(em, v1, v2);
261
262         if(eed==NULL) {
263         
264                 eed= (EditEdge *)callocedge(em, sizeof(EditEdge), 1);
265                 eed->v1= v1;
266                 eed->v2= v2;
267                 BLI_addtail(&em->edges, eed);
268                 eed->dir= swap;
269                 insert_hashedge(em, eed);
270                 em->totedge++;
271                 
272                 /* copy edge data:
273                    rule is to do this with addedgelist call, before addfacelist */
274                 if(example) {
275                         eed->crease= example->crease;
276                         eed->bweight= example->bweight;
277                         eed->sharp = example->sharp;
278                         eed->seam = example->seam;
279                         eed->h |= (example->h & EM_FGON);
280                 }
281         }
282
283         return eed;
284 }
285
286 void remedge(EditMesh *em, EditEdge *eed)
287 {
288         BLI_remlink(&em->edges, eed);
289         remove_hashedge(em, eed);
290         
291         em->totedge--;
292 }
293
294 void free_editedge(EditMesh *em, EditEdge *eed)
295 {
296         EM_remove_selection(em, eed, EDITEDGE);
297         if(eed->fast==0){ 
298                 free(eed);
299         }
300 }
301
302 void free_editface(EditMesh *em, EditFace *efa)
303 {
304         EM_remove_selection(em, efa, EDITFACE);
305         
306         if (em->act_face==efa) {
307                 EM_set_actFace(em, em->faces.first == efa ? NULL : em->faces.first);
308         }
309                 
310         CustomData_em_free_block(&em->fdata, &efa->data);
311         if(efa->fast==0)
312                 free(efa);
313         
314         em->totface--;
315 }
316
317 void free_vertlist(EditMesh *em, ListBase *edve) 
318 {
319         EditVert *eve, *next;
320
321         if (!edve) return;
322
323         eve= edve->first;
324         while(eve) {
325                 next= eve->next;
326                 free_editvert(em, eve);
327                 eve= next;
328         }
329         edve->first= edve->last= NULL;
330         em->totvert= em->totvertsel= 0;
331 }
332
333 void free_edgelist(EditMesh *em, ListBase *lb)
334 {
335         EditEdge *eed, *next;
336         
337         eed= lb->first;
338         while(eed) {
339                 next= eed->next;
340                 free_editedge(em, eed);
341                 eed= next;
342         }
343         lb->first= lb->last= NULL;
344         em->totedge= em->totedgesel= 0;
345 }
346
347 void free_facelist(EditMesh *em, ListBase *lb)
348 {
349         EditFace *efa, *next;
350         
351         efa= lb->first;
352         while(efa) {
353                 next= efa->next;
354                 free_editface(em, efa);
355                 efa= next;
356         }
357         lb->first= lb->last= NULL;
358         em->totface= em->totfacesel= 0;
359 }
360
361 EditFace *addfacelist(EditMesh *em, EditVert *v1, EditVert *v2, EditVert *v3, EditVert *v4, EditFace *example, EditFace *exampleEdges)
362 {
363         EditFace *efa;
364         EditEdge *e1, *e2=0, *e3=0, *e4=0;
365
366         /* added sanity check... seems to happen for some tools, or for enter editmode for corrupted meshes */
367         if(v1==v4 || v2==v4 || v3==v4) v4= NULL;
368         
369         /* add face to list and do the edges */
370         if(exampleEdges) {
371                 e1= addedgelist(em, v1, v2, exampleEdges->e1);
372                 e2= addedgelist(em, v2, v3, exampleEdges->e2);
373                 if(v4) e3= addedgelist(em, v3, v4, exampleEdges->e3); 
374                 else e3= addedgelist(em, v3, v1, exampleEdges->e3);
375                 if(v4) e4= addedgelist(em, v4, v1, exampleEdges->e4);
376         }
377         else {
378                 e1= addedgelist(em, v1, v2, NULL);
379                 e2= addedgelist(em, v2, v3, NULL);
380                 if(v4) e3= addedgelist(em, v3, v4, NULL); 
381                 else e3= addedgelist(em, v3, v1, NULL);
382                 if(v4) e4= addedgelist(em, v4, v1, NULL);
383         }
384         
385         if(v1==v2 || v2==v3 || v1==v3) return NULL;
386         if(e2==0) return NULL;
387
388         efa= (EditFace *)callocface(em, sizeof(EditFace), 1);
389         efa->v1= v1;
390         efa->v2= v2;
391         efa->v3= v3;
392         efa->v4= v4;
393
394         efa->e1= e1;
395         efa->e2= e2;
396         efa->e3= e3;
397         efa->e4= e4;
398
399         if(example) {
400                 efa->mat_nr= example->mat_nr;
401                 efa->flag= example->flag;
402                 CustomData_em_copy_data(&em->fdata, &em->fdata, example->data, &efa->data);
403         }
404         else {
405                 efa->mat_nr= em->mat_nr;
406
407                 CustomData_em_set_default(&em->fdata, &efa->data);
408         }
409
410         BLI_addtail(&em->faces, efa);
411         em->totface++;
412         
413         if(efa->v4) {
414                 normal_quad_v3( efa->n,efa->v1->co, efa->v2->co, efa->v3->co, efa->v4->co);
415                 cent_quad_v3(efa->cent, efa->v1->co, efa->v2->co, efa->v3->co, efa->v4->co);
416         }
417         else {
418                 normal_tri_v3( efa->n,efa->v1->co, efa->v2->co, efa->v3->co);
419                 cent_tri_v3(efa->cent, efa->v1->co, efa->v2->co, efa->v3->co);
420         }
421
422         return efa;
423 }
424
425 /* ************************ end add/new/find ************  */
426
427 /* ************************ Edit{Vert,Edge,Face} utilss ***************************** */
428
429 /* some nice utility functions */
430
431 EditVert *editedge_getOtherVert(EditEdge *eed, EditVert *eve)
432 {
433         if (eve==eed->v1) {
434                 return eed->v2;
435         } else if (eve==eed->v2) {
436                 return eed->v1;
437         } else {
438                 return NULL;
439         }
440 }
441
442 EditVert *editedge_getSharedVert(EditEdge *eed, EditEdge *eed2) 
443 {
444         if (eed->v1==eed2->v1 || eed->v1==eed2->v2) {
445                 return eed->v1;
446         } else if (eed->v2==eed2->v1 || eed->v2==eed2->v2) {
447                 return eed->v2;
448         } else {
449                 return NULL;
450         }
451 }
452
453 int editedge_containsVert(EditEdge *eed, EditVert *eve) 
454 {
455         return (eed->v1==eve || eed->v2==eve);
456 }
457
458 int editface_containsVert(EditFace *efa, EditVert *eve) 
459 {
460         return (efa->v1==eve || efa->v2==eve || efa->v3==eve || (efa->v4 && efa->v4==eve));
461 }
462
463 int editface_containsEdge(EditFace *efa, EditEdge *eed) 
464 {
465         return (efa->e1==eed || efa->e2==eed || efa->e3==eed || (efa->e4 && efa->e4==eed));
466 }
467
468
469 /* ************************ stuct EditMesh manipulation ***************************** */
470
471 /* fake callocs for fastmalloc below */
472 static void *calloc_fastvert(EditMesh *em, size_t size, size_t nr)
473 {
474         EditVert *eve= em->curvert++;
475         eve->fast= 1;
476         return eve;
477 }
478 static void *calloc_fastedge(EditMesh *em, size_t size, size_t nr)
479 {
480         EditEdge *eed= em->curedge++;
481         eed->fast= 1;
482         return eed;
483 }
484 static void *calloc_fastface(EditMesh *em, size_t size, size_t nr)
485 {
486         EditFace *efa= em->curface++;
487         efa->fast= 1;
488         return efa;
489 }
490
491 /* allocate 1 chunk for all vertices, edges, faces. These get tagged to
492    prevent it from being freed
493 */
494 static void init_editmesh_fastmalloc(EditMesh *em, int totvert, int totedge, int totface)
495 {
496         if(totvert) em->allverts= MEM_callocN(totvert*sizeof(EditVert), "allverts");
497         else em->allverts= NULL;
498         em->curvert= em->allverts;
499         
500         if(totedge==0) totedge= 4*totface;      // max possible
501
502         if(totedge) em->alledges= MEM_callocN(totedge*sizeof(EditEdge), "alledges");
503         else em->alledges= NULL;
504         em->curedge= em->alledges;
505         
506         if(totface) em->allfaces= MEM_callocN(totface*sizeof(EditFace), "allfaces");
507         else em->allfaces= NULL;
508         em->curface= em->allfaces;
509
510         callocvert= calloc_fastvert;
511         callocedge= calloc_fastedge;
512         callocface= calloc_fastface;
513 }
514
515 static void end_editmesh_fastmalloc(void)
516 {
517         callocvert= calloc_em;
518         callocedge= calloc_em;
519         callocface= calloc_em;
520 }
521
522 /* do not free editmesh itself here */
523 void free_editMesh(EditMesh *em)
524 {
525         if(em==NULL) return;
526
527         if(em->verts.first) free_vertlist(em, &em->verts);
528         if(em->edges.first) free_edgelist(em, &em->edges);
529         if(em->faces.first) free_facelist(em, &em->faces);
530         if(em->selected.first) BLI_freelistN(&(em->selected));
531
532         CustomData_free(&em->vdata, 0);
533         CustomData_free(&em->fdata, 0);
534
535         if(em->derivedFinal) {
536                 if (em->derivedFinal!=em->derivedCage) {
537                         em->derivedFinal->needsFree= 1;
538                         em->derivedFinal->release(em->derivedFinal);
539                 }
540                 em->derivedFinal= NULL;
541         }
542         if(em->derivedCage) {
543                 em->derivedCage->needsFree= 1;
544                 em->derivedCage->release(em->derivedCage);
545                 em->derivedCage= NULL;
546         }
547
548         /* DEBUG: hashtabs are slowest part of enter/exit editmode. here a testprint */
549 #if 0
550         if(em->hashedgetab) {
551                 HashEdge *he, *hen;
552                 int a, used=0, max=0, nr;
553                 he= em->hashedgetab;
554                 for(a=0; a<EDHASHSIZE; a++, he++) {
555                         if(he->eed) used++;
556                         hen= he->next;
557                         nr= 0;
558                         while(hen) {
559                                 nr++;
560                                 hen= hen->next;
561                         }
562                         if(max<nr) max= nr;
563                 }
564                 printf("hastab used %d max %d\n", used, max);
565         }
566 #endif
567         if(em->hashedgetab) MEM_freeN(em->hashedgetab);
568         em->hashedgetab= NULL;
569         
570         if(em->allverts) MEM_freeN(em->allverts);
571         if(em->alledges) MEM_freeN(em->alledges);
572         if(em->allfaces) MEM_freeN(em->allfaces);
573         
574         em->allverts= em->curvert= NULL;
575         em->alledges= em->curedge= NULL;
576         em->allfaces= em->curface= NULL;
577         
578         mesh_octree_table(NULL, NULL, NULL, 'e');
579         
580         em->totvert= em->totedge= em->totface= 0;
581
582 // XXX  if(em->retopo_paint_data) retopo_free_paint_data(em->retopo_paint_data);
583         em->retopo_paint_data= NULL;
584         em->act_face = NULL;
585 }
586
587 static void editMesh_set_hash(EditMesh *em)
588 {
589         EditEdge *eed;
590
591         if(em->hashedgetab) MEM_freeN(em->hashedgetab);
592         em->hashedgetab= NULL;
593         
594         for(eed=em->edges.first; eed; eed= eed->next)  {
595                 if( findedgelist(em, eed->v1, eed->v2)==NULL )
596                         insert_hashedge(em, eed);
597         }
598
599 }
600
601
602 /* ************************ IN & OUT EDITMODE ***************************** */
603
604
605 static void edge_normal_compare(EditEdge *eed, EditFace *efa1)
606 {
607         EditFace *efa2;
608         float cent1[3], cent2[3];
609         float inp;
610         
611         efa2 = eed->tmp.f;
612         if(efa1==efa2) return;
613         
614         inp= efa1->n[0]*efa2->n[0] + efa1->n[1]*efa2->n[1] + efa1->n[2]*efa2->n[2];
615         if(inp<0.999 && inp >-0.999) eed->f2= 1;
616                 
617         if(efa1->v4) cent_quad_v3(cent1, efa1->v1->co, efa1->v2->co, efa1->v3->co, efa1->v4->co);
618         else cent_tri_v3(cent1, efa1->v1->co, efa1->v2->co, efa1->v3->co);
619         if(efa2->v4) cent_quad_v3(cent2, efa2->v1->co, efa2->v2->co, efa2->v3->co, efa2->v4->co);
620         else cent_tri_v3(cent2, efa2->v1->co, efa2->v2->co, efa2->v3->co);
621         
622         sub_v3_v3v3(cent1, cent2, cent1);
623         normalize_v3(cent1);
624         inp= cent1[0]*efa1->n[0] + cent1[1]*efa1->n[1] + cent1[2]*efa1->n[2]; 
625
626         if(inp < -0.001 ) eed->f1= 1;
627 }
628
629 #if 0
630 typedef struct {
631         EditEdge *eed;
632         float noLen,no[3];
633         int adjCount;
634 } EdgeDrawFlagInfo;
635
636 static int edgeDrawFlagInfo_cmp(const void *av, const void *bv)
637 {
638         const EdgeDrawFlagInfo *a = av;
639         const EdgeDrawFlagInfo *b = bv;
640
641         if (a->noLen<b->noLen) return -1;
642         else if (a->noLen>b->noLen) return 1;
643         else return 0;
644 }
645 #endif
646
647 static void edge_drawflags(Mesh *me, EditMesh *em)
648 {
649         EditVert *eve;
650         EditEdge *eed, *e1, *e2, *e3, *e4;
651         EditFace *efa;
652         
653         /* - count number of times edges are used in faces: 0 en 1 time means draw edge
654          * - edges more than 1 time used: in *tmp.f is pointer to first face
655          * - check all faces, when normal differs to much: draw (flag becomes 1)
656          */
657
658         /* later on: added flags for 'cylinder' and 'sphere' intersection tests in old
659            game engine (2.04)
660          */
661         
662         recalc_editnormals(em);
663         
664         /* init */
665         eve= em->verts.first;
666         while(eve) {
667                 eve->f1= 1;             /* during test it's set at zero */
668                 eve= eve->next;
669         }
670         eed= em->edges.first;
671         while(eed) {
672                 eed->f2= eed->f1= 0;
673                 eed->tmp.f = 0;
674                 eed= eed->next;
675         }
676
677         efa= em->faces.first;
678         while(efa) {
679                 e1= efa->e1;
680                 e2= efa->e2;
681                 e3= efa->e3;
682                 e4= efa->e4;
683                 if(e1->f2<4) e1->f2+= 1;
684                 if(e2->f2<4) e2->f2+= 1;
685                 if(e3->f2<4) e3->f2+= 1;
686                 if(e4 && e4->f2<4) e4->f2+= 1;
687                 
688                 if(e1->tmp.f == 0) e1->tmp.f = (void *) efa;
689                 if(e2->tmp.f == 0) e2->tmp.f = (void *) efa;
690                 if(e3->tmp.f ==0) e3->tmp.f = (void *) efa;
691                 if(e4 && (e4->tmp.f == 0)) e4->tmp.f = (void *) efa;
692                 
693                 efa= efa->next;
694         }
695
696         if(me->drawflag & ME_ALLEDGES) {
697                 efa= em->faces.first;
698                 while(efa) {
699                         if(efa->e1->f2>=2) efa->e1->f2= 1;
700                         if(efa->e2->f2>=2) efa->e2->f2= 1;
701                         if(efa->e3->f2>=2) efa->e3->f2= 1;
702                         if(efa->e4 && efa->e4->f2>=2) efa->e4->f2= 1;
703                         
704                         efa= efa->next;
705                 }               
706         }       
707         else {
708                 
709                 /* handle single-edges for 'test cylinder flag' (old engine) */
710                 
711                 eed= em->edges.first;
712                 while(eed) {
713                         if(eed->f2==1) eed->f1= 1;
714                         eed= eed->next;
715                 }
716
717                 /* all faces, all edges with flag==2: compare normal */
718                 efa= em->faces.first;
719                 while(efa) {
720                         if(efa->e1->f2==2) edge_normal_compare(efa->e1, efa);
721                         else efa->e1->f2= 1;
722                         if(efa->e2->f2==2) edge_normal_compare(efa->e2, efa);
723                         else efa->e2->f2= 1;
724                         if(efa->e3->f2==2) edge_normal_compare(efa->e3, efa);
725                         else efa->e3->f2= 1;
726                         if(efa->e4) {
727                                 if(efa->e4->f2==2) edge_normal_compare(efa->e4, efa);
728                                 else efa->e4->f2= 1;
729                         }
730                         efa= efa->next;
731                 }
732                 
733                 /* sphere collision flag */
734                 
735                 eed= em->edges.first;
736                 while(eed) {
737                         if(eed->f1!=1) {
738                                 eed->v1->f1= eed->v2->f1= 0;
739                         }
740                         eed= eed->next;
741                 }
742                 
743         }
744 }
745
746 /* turns Mesh into editmesh */
747 void make_editMesh(Scene *scene, Object *ob)
748 {
749         Mesh *me= ob->data;
750         MFace *mface;
751         MVert *mvert;
752         MSelect *mselect;
753         KeyBlock *actkey;
754         EditMesh *em;
755         EditVert *eve, **evlist, *eve1, *eve2, *eve3, *eve4;
756         EditFace *efa, *efa_last_sel= NULL;
757         EditEdge *eed;
758         EditSelection *ese;
759         float *co, (*keyco)[3]= NULL;
760         int tot, a, eekadoodle= 0;
761
762         if(me->edit_mesh==NULL)
763                 me->edit_mesh= MEM_callocN(sizeof(EditMesh), "editmesh");
764         else 
765                 /* because of reload */
766                 free_editMesh(me->edit_mesh);
767         
768         em= me->edit_mesh;
769         
770         em->selectmode= scene->toolsettings->selectmode; // warning needs to be synced
771         em->act_face = NULL;
772         em->totvert= tot= me->totvert;
773         em->totedge= me->totedge;
774         em->totface= me->totface;
775         
776         if(tot==0) {
777                 return;
778         }
779         
780         if(ob->actcol > 0)
781                 em->mat_nr= ob->actcol-1;
782
783         /* initialize fastmalloc for editmesh */
784         init_editmesh_fastmalloc(em, me->totvert, me->totedge, me->totface);
785
786         actkey = ob_get_keyblock(ob);
787         if(actkey) {
788                 /* undo-ing in past for previous editmode sessions gives corrupt 'keyindex' values */
789                 undo_editmode_clear();
790                 keyco= actkey->data;
791                 em->shapenr= ob->shapenr;
792         }
793
794         /* make editverts */
795         CustomData_copy(&me->vdata, &em->vdata, CD_MASK_EDITMESH, CD_CALLOC, 0);
796         mvert= me->mvert;
797
798         evlist= (EditVert **)MEM_mallocN(tot*sizeof(void *),"evlist");
799         for(a=0; a<tot; a++, mvert++) {
800                 
801                 co= mvert->co;
802
803                 /* edit the shape key coordinate if available */
804                 if(keyco && a < actkey->totelem)
805                         co= keyco[a];
806
807                 eve= addvertlist(em, co, NULL);
808                 evlist[a]= eve;
809                 
810                 /* face select sets selection in next loop */
811                 if(!paint_facesel_test(ob))
812                         eve->f |= (mvert->flag & 1);
813                 
814                 if (mvert->flag & ME_HIDE) eve->h= 1;           
815                 eve->no[0]= mvert->no[0]/32767.0;
816                 eve->no[1]= mvert->no[1]/32767.0;
817                 eve->no[2]= mvert->no[2]/32767.0;
818
819                 eve->bweight= ((float)mvert->bweight)/255.0f;
820
821                 /* lets overwrite the keyindex of the editvert
822                  * with the order it used to be in before
823                  * editmode
824                  */
825                 eve->keyindex = a;
826
827                 CustomData_to_em_block(&me->vdata, &em->vdata, a, &eve->data);
828         }
829
830         if(actkey && actkey->totelem!=me->totvert);
831         else {
832                 MEdge *medge= me->medge;
833                 
834                 CustomData_copy(&me->edata, &em->edata, CD_MASK_EDITMESH, CD_CALLOC, 0);
835                 /* make edges */
836                 for(a=0; a<me->totedge; a++, medge++) {
837                         eed= addedgelist(em, evlist[medge->v1], evlist[medge->v2], NULL);
838                         /* eed can be zero when v1 and v2 are identical, dxf import does this... */
839                         if(eed) {
840                                 eed->crease= ((float)medge->crease)/255.0f;
841                                 eed->bweight= ((float)medge->bweight)/255.0f;
842                                 
843                                 if(medge->flag & ME_SEAM) eed->seam= 1;
844                                 if(medge->flag & ME_SHARP) eed->sharp = 1;
845                                 if(medge->flag & SELECT) eed->f |= SELECT;
846                                 if(medge->flag & ME_FGON) eed->h= EM_FGON;      // 2 different defines!
847                                 if(medge->flag & ME_HIDE) eed->h |= 1;
848                                 if(em->selectmode==SCE_SELECT_EDGE) 
849                                         EM_select_edge(eed, eed->f & SELECT);           // force edge selection to vertices, seems to be needed ...
850                                 CustomData_to_em_block(&me->edata,&em->edata, a, &eed->data);
851                         }
852                 }
853                 
854                 CustomData_copy(&me->fdata, &em->fdata, CD_MASK_EDITMESH, CD_CALLOC, 0);
855
856                 /* make faces */
857                 mface= me->mface;
858
859                 for(a=0; a<me->totface; a++, mface++) {
860                         eve1= evlist[mface->v1];
861                         eve2= evlist[mface->v2];
862                         if(!mface->v3) eekadoodle= 1;
863                         eve3= evlist[mface->v3];
864                         if(mface->v4) eve4= evlist[mface->v4]; else eve4= NULL;
865                         
866                         efa= addfacelist(em, eve1, eve2, eve3, eve4, NULL, NULL);
867
868                         if(efa) {
869                                 CustomData_to_em_block(&me->fdata, &em->fdata, a, &efa->data);
870
871                                 efa->mat_nr= mface->mat_nr;
872                                 efa->flag= mface->flag & ~ME_HIDE;
873                                 
874                                 /* select and hide face flag */
875                                 if(mface->flag & ME_HIDE) {
876                                         efa->h= 1;
877                                 } else {
878                                         if (a==me->act_face) {
879                                                 EM_set_actFace(em, efa);
880                                         }
881                                         
882                                         /* dont allow hidden and selected */
883                                         if(mface->flag & ME_FACE_SEL) {
884                                                 efa->f |= SELECT;
885                                                 
886                                                 if(paint_facesel_test(ob)) {
887                                                         EM_select_face(efa, 1); /* flush down */
888                                                 }
889
890                                                 efa_last_sel= efa;
891                                         }
892                                 }
893                         }
894                 }
895         }
896         
897         if(EM_get_actFace(em, 0) && efa_last_sel) {
898                 EM_set_actFace(em, efa_last_sel);
899         }
900
901         if(eekadoodle)
902                 error("This Mesh has old style edgecodes, please put it in the bugtracker!");
903         
904         MEM_freeN(evlist);
905
906         end_editmesh_fastmalloc();      // resets global function pointers
907         
908         if(me->mselect){
909                 //restore editselections
910                 EM_init_index_arrays(em, 1,1,1);
911                 mselect = me->mselect;
912                 
913                 for(a=0; a<me->totselect; a++, mselect++){
914                         /*check if recorded selection is still valid, if so copy into editmesh*/
915                         if( (mselect->type == EDITVERT && me->mvert[mselect->index].flag & SELECT) || (mselect->type == EDITEDGE && me->medge[mselect->index].flag & SELECT) || (mselect->type == EDITFACE && me->mface[mselect->index].flag & ME_FACE_SEL) ){
916                                 ese = MEM_callocN(sizeof(EditSelection), "Edit Selection");
917                                 ese->type = mselect->type;      
918                                 if(ese->type == EDITVERT) ese->data = EM_get_vert_for_index(mselect->index); else
919                                 if(ese->type == EDITEDGE) ese->data = EM_get_edge_for_index(mselect->index); else
920                                 if(ese->type == EDITFACE) ese->data = EM_get_face_for_index(mselect->index);
921                                 BLI_addtail(&(em->selected),ese);
922                         }
923                 }
924                 EM_free_index_arrays();
925         }
926         /* this creates coherent selections. also needed for older files */
927         EM_selectmode_set(em);
928         /* paranoia check to enforce hide rules */
929         EM_hide_reset(em);
930         /* sets helper flags which arent saved */
931         EM_fgon_flags(em);
932         
933         if (EM_get_actFace(em, 0)==NULL) {
934                 EM_set_actFace(em, em->faces.first ); /* will use the first face, this is so we alwats have an active face */
935         }
936 }
937
938 /* makes Mesh out of editmesh */
939 void load_editMesh(Scene *scene, Object *ob)
940 {
941         Mesh *me= ob->data;
942         MVert *mvert, *oldverts;
943         MEdge *medge;
944         MFace *mface;
945         MSelect *mselect;
946         EditMesh *em= me->edit_mesh;
947         EditVert *eve;
948         EditFace *efa, *efa_act;
949         EditEdge *eed;
950         EditSelection *ese;
951         float *fp, *newkey, *oldkey, nor[3];
952         int i, a, ototvert;
953         
954         /* this one also tests of edges are not in faces: */
955         /* eed->f2==0: not in face, f2==1: draw it */
956         /* eed->f1 : flag for dynaface (cylindertest, old engine) */
957         /* eve->f1 : flag for dynaface (sphere test, old engine) */
958         /* eve->f2 : being used in vertexnormals */
959         edge_drawflags(me, em);
960         
961         EM_stats_update(em);
962         
963         /* new Vertex block */
964         if(em->totvert==0) mvert= NULL;
965         else mvert= MEM_callocN(em->totvert*sizeof(MVert), "loadeditMesh vert");
966
967         /* new Edge block */
968         if(em->totedge==0) medge= NULL;
969         else medge= MEM_callocN(em->totedge*sizeof(MEdge), "loadeditMesh edge");
970         
971         /* new Face block */
972         if(em->totface==0) mface= NULL;
973         else mface= MEM_callocN(em->totface*sizeof(MFace), "loadeditMesh face");
974
975         /* lets save the old verts just in case we are actually working on
976          * a key ... we now do processing of the keys at the end */
977         oldverts= me->mvert;
978         ototvert= me->totvert;
979
980         /* don't free this yet */
981         CustomData_set_layer(&me->vdata, CD_MVERT, NULL);
982
983         /* free custom data */
984         CustomData_free(&me->vdata, me->totvert);
985         CustomData_free(&me->edata, me->totedge);
986         CustomData_free(&me->fdata, me->totface);
987
988         /* add new custom data */
989         me->totvert= em->totvert;
990         me->totedge= em->totedge;
991         me->totface= em->totface;
992
993         CustomData_copy(&em->vdata, &me->vdata, CD_MASK_MESH, CD_CALLOC, me->totvert);
994         CustomData_copy(&em->edata, &me->edata, CD_MASK_MESH, CD_CALLOC, me->totedge);
995         CustomData_copy(&em->fdata, &me->fdata, CD_MASK_MESH, CD_CALLOC, me->totface);
996
997         CustomData_add_layer(&me->vdata, CD_MVERT, CD_ASSIGN, mvert, me->totvert);
998         CustomData_add_layer(&me->edata, CD_MEDGE, CD_ASSIGN, medge, me->totedge);
999         CustomData_add_layer(&me->fdata, CD_MFACE, CD_ASSIGN, mface, me->totface);
1000         mesh_update_customdata_pointers(me);
1001
1002         /* the vertices, use ->tmp.l as counter */
1003         eve= em->verts.first;
1004         a= 0;
1005
1006         while(eve) {
1007                 VECCOPY(mvert->co, eve->co);
1008
1009                 mvert->mat_nr= 32767;  /* what was this for, halos? */
1010                 
1011                 /* vertex normal */
1012                 VECCOPY(nor, eve->no);
1013                 mul_v3_fl(nor, 32767.0);
1014                 VECCOPY(mvert->no, nor);
1015
1016                 /* note: it used to remove me->dvert when it was not in use, cancelled
1017                    that... annoying when you have a fresh vgroup */
1018                 CustomData_from_em_block(&em->vdata, &me->vdata, eve->data, a);
1019
1020                 eve->tmp.l = a++;  /* counter */
1021                         
1022                 mvert->flag= 0;
1023                 mvert->flag |= (eve->f & SELECT);
1024                 if (eve->h) mvert->flag |= ME_HIDE;
1025                 
1026                 mvert->bweight= (char)(255.0*eve->bweight);
1027
1028                 eve= eve->next;
1029                 mvert++;
1030         }
1031
1032         /* the edges */
1033         a= 0;
1034         eed= em->edges.first;
1035         while(eed) {
1036                 medge->v1= (unsigned int) eed->v1->tmp.l;
1037                 medge->v2= (unsigned int) eed->v2->tmp.l;
1038                 
1039                 medge->flag= (eed->f & SELECT) | ME_EDGERENDER;
1040                 if(eed->f2<2) medge->flag |= ME_EDGEDRAW;
1041                 if(eed->f2==0) medge->flag |= ME_LOOSEEDGE;
1042                 if(eed->sharp) medge->flag |= ME_SHARP;
1043                 if(eed->seam) medge->flag |= ME_SEAM;
1044                 if(eed->h & EM_FGON) medge->flag |= ME_FGON;    // different defines yes
1045                 if(eed->h & 1) medge->flag |= ME_HIDE;
1046                 
1047                 medge->crease= (char)(255.0*eed->crease);
1048                 medge->bweight= (char)(255.0*eed->bweight);
1049                 CustomData_from_em_block(&em->edata, &me->edata, eed->data, a);         
1050
1051                 eed->tmp.l = a++;
1052                 
1053                 medge++;
1054                 eed= eed->next;
1055         }
1056
1057         /* the faces */
1058         a = 0;
1059         efa= em->faces.first;
1060         efa_act= EM_get_actFace(em, 0);
1061         i = 0;
1062         me->act_face = -1;
1063         while(efa) {
1064                 mface= &((MFace *) me->mface)[i];
1065                 
1066                 mface->v1= (unsigned int) efa->v1->tmp.l;
1067                 mface->v2= (unsigned int) efa->v2->tmp.l;
1068                 mface->v3= (unsigned int) efa->v3->tmp.l;
1069                 if (efa->v4) mface->v4 = (unsigned int) efa->v4->tmp.l;
1070
1071                 mface->mat_nr= efa->mat_nr;
1072                 
1073                 mface->flag= efa->flag;
1074                 /* bit 0 of flag is already taken for smooth... */
1075                 
1076                 if(efa->h) {
1077                         mface->flag |= ME_HIDE;
1078                         mface->flag &= ~ME_FACE_SEL;
1079                 } else {
1080                         if(efa->f & 1) mface->flag |= ME_FACE_SEL;
1081                         else mface->flag &= ~ME_FACE_SEL;
1082                 }
1083                 
1084                 /* mat_nr in vertex */
1085                 if(me->totcol>1) {
1086                         mvert= me->mvert+mface->v1;
1087                         if(mvert->mat_nr == (char)32767) mvert->mat_nr= mface->mat_nr;
1088                         mvert= me->mvert+mface->v2;
1089                         if(mvert->mat_nr == (char)32767) mvert->mat_nr= mface->mat_nr;
1090                         mvert= me->mvert+mface->v3;
1091                         if(mvert->mat_nr == (char)32767) mvert->mat_nr= mface->mat_nr;
1092                         if(mface->v4) {
1093                                 mvert= me->mvert+mface->v4;
1094                                 if(mvert->mat_nr == (char)32767) mvert->mat_nr= mface->mat_nr;
1095                         }
1096                 }
1097                         
1098                 /* watch: efa->e1->f2==0 means loose edge */ 
1099                         
1100                 if(efa->e1->f2==1) {
1101                         efa->e1->f2= 2;
1102                 }                       
1103                 if(efa->e2->f2==1) {
1104                         efa->e2->f2= 2;
1105                 }
1106                 if(efa->e3->f2==1) {
1107                         efa->e3->f2= 2;
1108                 }
1109                 if(efa->e4 && efa->e4->f2==1) {
1110                         efa->e4->f2= 2;
1111                 }
1112
1113                 CustomData_from_em_block(&em->fdata, &me->fdata, efa->data, i);
1114
1115                 /* no index '0' at location 3 or 4 */
1116                 test_index_face(mface, &me->fdata, i, efa->v4?4:3);
1117                 
1118                 if (efa_act == efa)
1119                         me->act_face = a;
1120
1121                 efa->tmp.l = a++;
1122                 i++;
1123                 efa= efa->next;
1124         }
1125
1126         /* patch hook indices and vertex parents */
1127         {
1128                 Object *ob;
1129                 ModifierData *md;
1130                 EditVert **vertMap = NULL;
1131                 int i,j;
1132
1133                 for (ob=G.main->object.first; ob; ob=ob->id.next) {
1134                         if (ob->parent==ob && ELEM(ob->partype, PARVERT1,PARVERT3)) {
1135                                 
1136                                 /* duplicate code from below, make it function later...? */
1137                                 if (!vertMap) {
1138                                         vertMap = MEM_callocN(sizeof(*vertMap)*ototvert, "vertMap");
1139                                         
1140                                         for (eve=em->verts.first; eve; eve=eve->next) {
1141                                                 if (eve->keyindex!=-1)
1142                                                         vertMap[eve->keyindex] = eve;
1143                                         }
1144                                 }
1145                                 if(ob->par1 < ototvert) {
1146                                         eve = vertMap[ob->par1];
1147                                         if(eve) ob->par1= eve->tmp.l;
1148                                 }
1149                                 if(ob->par2 < ototvert) {
1150                                         eve = vertMap[ob->par2];
1151                                         if(eve) ob->par2= eve->tmp.l;
1152                                 }
1153                                 if(ob->par3 < ototvert) {
1154                                         eve = vertMap[ob->par3];
1155                                         if(eve) ob->par3= eve->tmp.l;
1156                                 }
1157                                 
1158                         }
1159                         if (ob->data==me) {
1160                                 for (md=ob->modifiers.first; md; md=md->next) {
1161                                         if (md->type==eModifierType_Hook) {
1162                                                 HookModifierData *hmd = (HookModifierData*) md;
1163
1164                                                 if (!vertMap) {
1165                                                         vertMap = MEM_callocN(sizeof(*vertMap)*ototvert, "vertMap");
1166
1167                                                         for (eve=em->verts.first; eve; eve=eve->next) {
1168                                                                 if (eve->keyindex!=-1)
1169                                                                         vertMap[eve->keyindex] = eve;
1170                                                         }
1171                                                 }
1172                                                 
1173                                                 for (i=j=0; i<hmd->totindex; i++) {
1174                                                         if(hmd->indexar[i] < ototvert) {
1175                                                                 eve = vertMap[hmd->indexar[i]];
1176                                                                 
1177                                                                 if (eve) {
1178                                                                         hmd->indexar[j++] = eve->tmp.l;
1179                                                                 }
1180                                                         }
1181                                                         else j++;
1182                                                 }
1183
1184                                                 hmd->totindex = j;
1185                                         }
1186                                 }
1187                         }
1188                 }
1189
1190                 if (vertMap) MEM_freeN(vertMap);
1191         }
1192
1193         /* are there keys? */
1194         if(me->key) {
1195                 KeyBlock *currkey;
1196                 KeyBlock *actkey= BLI_findlink(&me->key->block, em->shapenr-1);
1197
1198                 /* Lets reorder the key data so that things line up roughly
1199                  * with the way things were before editmode */
1200                 currkey = me->key->block.first;
1201                 while(currkey) {
1202                         
1203                         fp= newkey= MEM_callocN(me->key->elemsize*em->totvert,  "currkey->data");
1204                         oldkey = currkey->data;
1205
1206                         eve= em->verts.first;
1207
1208                         i = 0;
1209                         mvert = me->mvert;
1210                         while(eve) {
1211                                 if (eve->keyindex >= 0 && eve->keyindex < currkey->totelem) { // valid old vertex
1212                                         if(currkey == actkey) {
1213                                                 if(actkey == me->key->refkey) {
1214                                                         VECCOPY(fp, mvert->co);
1215                                                 }
1216                                                 else {
1217                                                         VECCOPY(fp, mvert->co);
1218                                                         if(oldverts) {
1219                                                                 VECCOPY(mvert->co, oldverts[eve->keyindex].co);
1220                                                         }
1221                                                 }
1222                                         }
1223                                         else {
1224                                                 if(oldkey) {
1225                                                         VECCOPY(fp, oldkey + 3 * eve->keyindex);
1226                                                 }
1227                                         }
1228                                 }
1229                                 else {
1230                                         VECCOPY(fp, mvert->co);
1231                                 }
1232                                 fp+= 3;
1233                                 ++i;
1234                                 ++mvert;
1235                                 eve= eve->next;
1236                         }
1237                         currkey->totelem= em->totvert;
1238                         if(currkey->data) MEM_freeN(currkey->data);
1239                         currkey->data = newkey;
1240                         
1241                         currkey= currkey->next;
1242                 }
1243         }
1244
1245         if(oldverts) MEM_freeN(oldverts);
1246         
1247         i = 0;
1248         for(ese=em->selected.first; ese; ese=ese->next) i++;
1249         me->totselect = i;
1250         if(i==0) mselect= NULL;
1251         else mselect= MEM_callocN(i*sizeof(MSelect), "loadeditMesh selections");
1252         
1253         if(me->mselect) MEM_freeN(me->mselect);
1254         me->mselect= mselect;
1255         
1256         for(ese=em->selected.first; ese; ese=ese->next){
1257                 mselect->type = ese->type;
1258                 if(ese->type == EDITVERT) mselect->index = ((EditVert*)ese->data)->tmp.l;
1259                 else if(ese->type == EDITEDGE) mselect->index = ((EditEdge*)ese->data)->tmp.l;
1260                 else if(ese->type == EDITFACE) mselect->index = ((EditFace*)ese->data)->tmp.l;
1261                 mselect++;
1262         }
1263         
1264         /* to be sure: clear ->tmp.l pointers */
1265         eve= em->verts.first;
1266         while(eve) {
1267                 eve->tmp.l = 0;
1268                 eve= eve->next;
1269         }
1270         
1271         eed= em->edges.first;
1272         while(eed) { 
1273                 eed->tmp.l = 0;
1274                 eed= eed->next;
1275         }
1276         
1277         efa= em->faces.first;
1278         while(efa) {
1279                 efa->tmp.l = 0;
1280                 efa= efa->next;
1281         }
1282         
1283         /* remake softbody of all users */
1284         if(me->id.us>1) {
1285                 Base *base;
1286                 for(base= scene->base.first; base; base= base->next)
1287                         if(base->object->data==me)
1288                                 base->object->recalc |= OB_RECALC_DATA;
1289         }
1290
1291         mesh_calc_normals(me->mvert, me->totvert, me->mface, me->totface, NULL);
1292 }
1293
1294 void remake_editMesh(Scene *scene, Object *ob)
1295 {
1296         make_editMesh(scene, ob);
1297         DAG_id_flush_update(&ob->id, OB_RECALC_DATA);
1298         BIF_undo_push("Undo all changes");
1299 }
1300
1301 /* *************** Operator: separate parts *************/
1302
1303 static EnumPropertyItem prop_separate_types[] = {
1304         {0, "SELECTED", 0, "Selection", ""},
1305         {1, "MATERIAL", 0, "By Material", ""},
1306         {2, "LOOSE", 0, "By loose parts", ""},
1307         {0, NULL, 0, NULL, NULL}
1308 };
1309
1310 /* return 1: success */
1311 static int mesh_separate_selected(Scene *scene, Base *editbase)
1312 {
1313         EditMesh *em, *emnew;
1314         EditVert *eve, *v1;
1315         EditEdge *eed, *e1;
1316         EditFace *efa, *f1;
1317         Object *obedit;
1318         Mesh *me, *menew;
1319         Base *basenew;
1320         
1321         if(editbase==NULL) return 0;
1322         
1323         obedit= editbase->object;
1324         me= obedit->data;
1325         em= BKE_mesh_get_editmesh(me);
1326         if(me->key) {
1327                 error("Can't separate with vertex keys");
1328                 BKE_mesh_end_editmesh(me, em);
1329                 return 0;
1330         }
1331         
1332         if(em->selected.first) 
1333                 BLI_freelistN(&(em->selected)); /* clear the selection order */
1334                 
1335         EM_selectmode_set(em);  // enforce full consistent selection flags 
1336         
1337         EM_stats_update(em);
1338         
1339         if(em->totvertsel==0) {
1340                 BKE_mesh_end_editmesh(me, em);
1341                 return 0;
1342         }
1343         
1344         /* we are going to work as follows:
1345          * 1. add a linked duplicate object: this will be the new one, we remember old pointer
1346          * 2. give new object empty mesh and put in editmode
1347          * 3: do a split if needed on current editmesh.
1348          * 4. copy over: all NOT selected verts, edges, faces
1349          * 5. call load_editMesh() on the new object
1350          */
1351         
1352         /* 1 */
1353         basenew= ED_object_add_duplicate(scene, editbase, 0);   /* 0 = fully linked */
1354         ED_base_object_select(basenew, BA_DESELECT);
1355         
1356         /* 2 */
1357         basenew->object->data= menew= add_mesh(me->id.name+2);  /* empty */
1358         assign_matarar(basenew->object, give_matarar(obedit), *give_totcolp(obedit)); /* new in 2.5 */
1359         me->id.us--;
1360         make_editMesh(scene, basenew->object);
1361         emnew= menew->edit_mesh;
1362         CustomData_copy(&em->vdata, &emnew->vdata, CD_MASK_EDITMESH, CD_DEFAULT, 0);
1363         CustomData_copy(&em->edata, &emnew->edata, CD_MASK_EDITMESH, CD_DEFAULT, 0);
1364         CustomData_copy(&em->fdata, &emnew->fdata, CD_MASK_EDITMESH, CD_DEFAULT, 0);
1365         
1366         /* 3 */
1367         /* SPLIT: first make duplicate */
1368         adduplicateflag(em, SELECT);
1369         /* SPLIT: old faces have 3x flag 128 set, delete these ones */
1370         delfaceflag(em, 128);
1371         /* since we do tricky things with verts/edges/faces, this makes sure all is selected coherent */
1372         EM_selectmode_set(em);
1373         
1374         /* 4 */
1375         /* move over: everything that is selected */
1376         for(eve= em->verts.first; eve; eve= v1) {
1377                 v1= eve->next;
1378                 if(eve->f & SELECT) {
1379                         BLI_remlink(&em->verts, eve);
1380                         BLI_addtail(&emnew->verts, eve);
1381                 }
1382         }
1383         
1384         for(eed= em->edges.first; eed; eed= e1) {
1385                 e1= eed->next;
1386                 if(eed->f & SELECT) {
1387                         BLI_remlink(&em->edges, eed);
1388                         BLI_addtail(&emnew->edges, eed);
1389                 }
1390         }
1391         
1392         for(efa= em->faces.first; efa; efa= f1) {
1393                 f1= efa->next;
1394                 if (efa == em->act_face && (efa->f & SELECT)) {
1395                         EM_set_actFace(em, NULL);
1396                 }
1397
1398                 if(efa->f & SELECT) {
1399                         BLI_remlink(&em->faces, efa);
1400                         BLI_addtail(&emnew->faces, efa);
1401                 }
1402         }
1403
1404         /* 5 */
1405         load_editMesh(scene, basenew->object);
1406         free_editMesh(emnew);
1407         MEM_freeN(menew->edit_mesh);
1408         menew->edit_mesh= NULL;
1409         
1410         /* hashedges are invalid now, make new! */
1411         editMesh_set_hash(em);
1412
1413         DAG_id_flush_update(&obedit->id, OB_RECALC_DATA);       
1414         DAG_id_flush_update(&basenew->object->id, OB_RECALC_DATA);      
1415
1416         BKE_mesh_end_editmesh(me, em);
1417
1418         return 1;
1419 }
1420
1421 /* return 1: success */
1422 static int mesh_separate_material(Scene *scene, Base *editbase)
1423 {
1424         Mesh *me= editbase->object->data;
1425         EditMesh *em= BKE_mesh_get_editmesh(me);
1426         unsigned char curr_mat;
1427         
1428         for (curr_mat = 1; curr_mat < editbase->object->totcol; ++curr_mat) {
1429                 /* clear selection, we're going to use that to select material group */
1430                 EM_clear_flag_all(em, SELECT);
1431                 /* select the material */
1432                 EM_select_by_material(em, curr_mat);
1433                 /* and now separate */
1434                 if(0==mesh_separate_selected(scene, editbase)) {
1435                         BKE_mesh_end_editmesh(me, em);
1436                         return 0;
1437                 }
1438         }
1439
1440         BKE_mesh_end_editmesh(me, em);
1441         return 1;
1442 }
1443
1444 /* return 1: success */
1445 static int mesh_separate_loose(Scene *scene, Base *editbase)
1446 {
1447         Mesh *me;
1448         EditMesh *em;
1449         int doit= 1;
1450         
1451         me= editbase->object->data;
1452         em= BKE_mesh_get_editmesh(me);
1453         
1454         if(me->key) {
1455                 error("Can't separate with vertex keys");
1456                 BKE_mesh_end_editmesh(me, em);
1457                 return 0;
1458         }
1459         
1460         EM_clear_flag_all(em, SELECT);
1461         
1462         while(doit && em->verts.first) {
1463                 /* Select a random vert to start with */
1464                 EditVert *eve= em->verts.first;
1465                 eve->f |= SELECT;
1466                 
1467                 selectconnected_mesh_all(em);
1468                 
1469                 /* and now separate */
1470                 doit= mesh_separate_selected(scene, editbase);
1471         }
1472
1473         BKE_mesh_end_editmesh(me, em);
1474         return 1;
1475 }
1476
1477
1478 static int mesh_separate_exec(bContext *C, wmOperator *op)
1479 {
1480         Scene *scene= CTX_data_scene(C);
1481         Base *base= CTX_data_active_base(C);
1482         int retval= 0, type= RNA_enum_get(op->ptr, "type");
1483         
1484         if(type == 0)
1485                 retval= mesh_separate_selected(scene, base);
1486         else if(type == 1)
1487                 retval= mesh_separate_material (scene, base);
1488         else if(type == 2)
1489                 retval= mesh_separate_loose(scene, base);
1490            
1491         if(retval) {
1492                 WM_event_add_notifier(C, NC_GEOM|ND_DATA, base->object->data);
1493                 return OPERATOR_FINISHED;
1494         }
1495         return OPERATOR_CANCELLED;
1496 }
1497
1498 void MESH_OT_separate(wmOperatorType *ot)
1499 {
1500         /* identifiers */
1501         ot->name= "Separate";
1502         ot->description= "Separate selected geometry into a new mesh.";
1503         ot->idname= "MESH_OT_separate";
1504         
1505         /* api callbacks */
1506         ot->invoke= WM_menu_invoke;
1507         ot->exec= mesh_separate_exec;
1508         ot->poll= ED_operator_editmesh;
1509         
1510         /* flags */
1511         ot->flag= OPTYPE_REGISTER|OPTYPE_UNDO;
1512         
1513         ot->prop= RNA_def_enum(ot->srna, "type", prop_separate_types, 0, "Type", "");
1514 }
1515
1516
1517 /* ******************************************** */
1518
1519 /* *************** UNDO ***************************** */
1520 /* new mesh undo, based on pushing editmesh data itself */
1521 /* reuses same code as for global and curve undo... unify that (ton) */
1522
1523 /* only one 'hack', to save memory it doesn't store the first push, but does a remake editmesh */
1524
1525 /* a compressed version of editmesh data */
1526
1527 typedef struct EditVertC
1528 {
1529         float no[3];
1530         float co[3];
1531         unsigned char f, h;
1532         short bweight;
1533         int keyindex;
1534 } EditVertC;
1535
1536 typedef struct EditEdgeC
1537 {
1538         int v1, v2;
1539         unsigned char f, h, seam, sharp, pad;
1540         short crease, bweight, fgoni;
1541 } EditEdgeC;
1542
1543 typedef struct EditFaceC
1544 {
1545         int v1, v2, v3, v4;
1546         unsigned char flag, f, h, fgonf, pad1;
1547         short mat_nr;
1548 } EditFaceC;
1549
1550 typedef struct EditSelectionC{
1551         short type;
1552         int index;
1553 }EditSelectionC;
1554
1555 typedef struct UndoMesh {
1556         EditVertC *verts;
1557         EditEdgeC *edges;
1558         EditFaceC *faces;
1559         EditSelectionC *selected;
1560         int totvert, totedge, totface, totsel;
1561         int selectmode, shapenr;
1562         RetopoPaintData *retopo_paint_data;
1563         char retopo_mode;
1564         CustomData vdata, edata, fdata;
1565 } UndoMesh;
1566
1567 /* for callbacks */
1568
1569 static void free_undoMesh(void *umv)
1570 {
1571         UndoMesh *um= umv;
1572         
1573         if(um->verts) MEM_freeN(um->verts);
1574         if(um->edges) MEM_freeN(um->edges);
1575         if(um->faces) MEM_freeN(um->faces);
1576         if(um->selected) MEM_freeN(um->selected);
1577 // XXX  if(um->retopo_paint_data) retopo_free_paint_data(um->retopo_paint_data);
1578         CustomData_free(&um->vdata, um->totvert);
1579         CustomData_free(&um->edata, um->totedge);
1580         CustomData_free(&um->fdata, um->totface);
1581         MEM_freeN(um);
1582 }
1583
1584 static void *editMesh_to_undoMesh(void *emv)
1585 {
1586         EditMesh *em= (EditMesh *)emv;
1587         UndoMesh *um;
1588         EditVert *eve;
1589         EditEdge *eed;
1590         EditFace *efa;
1591         EditSelection *ese;
1592         EditVertC *evec=NULL;
1593         EditEdgeC *eedc=NULL;
1594         EditFaceC *efac=NULL;
1595         EditSelectionC *esec=NULL;
1596         int a;
1597
1598         um= MEM_callocN(sizeof(UndoMesh), "undomesh");
1599         
1600         um->selectmode = em->selectmode;
1601         um->shapenr = em->shapenr;
1602         
1603         for(eve=em->verts.first; eve; eve= eve->next) um->totvert++;
1604         for(eed=em->edges.first; eed; eed= eed->next) um->totedge++;
1605         for(efa=em->faces.first; efa; efa= efa->next) um->totface++;
1606         for(ese=em->selected.first; ese; ese=ese->next) um->totsel++; 
1607         /* malloc blocks */
1608         
1609         if(um->totvert) evec= um->verts= MEM_callocN(um->totvert*sizeof(EditVertC), "allvertsC");
1610         if(um->totedge) eedc= um->edges= MEM_callocN(um->totedge*sizeof(EditEdgeC), "alledgesC");
1611         if(um->totface) efac= um->faces= MEM_callocN(um->totface*sizeof(EditFaceC), "allfacesC");
1612         if(um->totsel) esec= um->selected= MEM_callocN(um->totsel*sizeof(EditSelectionC), "allselections");
1613
1614         if(um->totvert) CustomData_copy(&em->vdata, &um->vdata, CD_MASK_EDITMESH, CD_CALLOC, um->totvert);
1615         if(um->totedge) CustomData_copy(&em->edata, &um->edata, CD_MASK_EDITMESH, CD_CALLOC, um->totedge);
1616         if(um->totface) CustomData_copy(&em->fdata, &um->fdata, CD_MASK_EDITMESH, CD_CALLOC, um->totface);
1617         
1618         /* now copy vertices */
1619         a = 0;
1620         for(eve=em->verts.first; eve; eve= eve->next, evec++, a++) {
1621                 VECCOPY(evec->co, eve->co);
1622                 VECCOPY(evec->no, eve->no);
1623
1624                 evec->f= eve->f;
1625                 evec->h= eve->h;
1626                 evec->keyindex= eve->keyindex;
1627                 eve->tmp.l = a; /*store index*/
1628                 evec->bweight= (short)(eve->bweight*255.0);
1629
1630                 CustomData_from_em_block(&em->vdata, &um->vdata, eve->data, a);
1631         }
1632         
1633         /* copy edges */
1634         a = 0;
1635         for(eed=em->edges.first; eed; eed= eed->next, eedc++, a++)  {
1636                 eedc->v1= (int)eed->v1->tmp.l;
1637                 eedc->v2= (int)eed->v2->tmp.l;
1638                 eedc->f= eed->f;
1639                 eedc->h= eed->h;
1640                 eedc->seam= eed->seam;
1641                 eedc->sharp= eed->sharp;
1642                 eedc->crease= (short)(eed->crease*255.0);
1643                 eedc->bweight= (short)(eed->bweight*255.0);
1644                 eedc->fgoni= eed->fgoni;
1645                 eed->tmp.l = a; /*store index*/
1646                 CustomData_from_em_block(&em->edata, &um->edata, eed->data, a);
1647         
1648         }
1649         
1650         /* copy faces */
1651         a = 0;
1652         for(efa=em->faces.first; efa; efa= efa->next, efac++, a++) {
1653                 efac->v1= (int)efa->v1->tmp.l;
1654                 efac->v2= (int)efa->v2->tmp.l;
1655                 efac->v3= (int)efa->v3->tmp.l;
1656                 if(efa->v4) efac->v4= (int)efa->v4->tmp.l;
1657                 else efac->v4= -1;
1658                 
1659                 efac->mat_nr= efa->mat_nr;
1660                 efac->flag= efa->flag;
1661                 efac->f= efa->f;
1662                 efac->h= efa->h;
1663                 efac->fgonf= efa->fgonf;
1664
1665                 efa->tmp.l = a; /*store index*/
1666
1667                 CustomData_from_em_block(&em->fdata, &um->fdata, efa->data, a);
1668         }
1669         
1670         a = 0;
1671         for(ese=em->selected.first; ese; ese=ese->next, esec++){
1672                 esec->type = ese->type;
1673                 if(ese->type == EDITVERT) a = esec->index = ((EditVert*)ese->data)->tmp.l; 
1674                 else if(ese->type == EDITEDGE) a = esec->index = ((EditEdge*)ese->data)->tmp.l; 
1675                 else if(ese->type == EDITFACE) a = esec->index = ((EditFace*)ese->data)->tmp.l;
1676         }
1677
1678 // XXX  um->retopo_paint_data= retopo_paint_data_copy(em->retopo_paint_data);
1679 //      um->retopo_mode= scene->toolsettings->retopo_mode;
1680         
1681         return um;
1682 }
1683
1684 static void undoMesh_to_editMesh(void *umv, void *emv)
1685 {
1686         EditMesh *em= (EditMesh *)emv;
1687         UndoMesh *um= (UndoMesh *)umv;
1688         EditVert *eve, **evar=NULL;
1689         EditEdge *eed;
1690         EditFace *efa;
1691         EditSelection *ese;
1692         EditVertC *evec;
1693         EditEdgeC *eedc;
1694         EditFaceC *efac;
1695         EditSelectionC *esec;
1696         int a=0;
1697
1698         free_editMesh(em);
1699         
1700         /* malloc blocks */
1701         memset(em, 0, sizeof(EditMesh));
1702                 
1703         em->selectmode = um->selectmode;
1704         em->shapenr = um->shapenr;
1705         
1706         init_editmesh_fastmalloc(em, um->totvert, um->totedge, um->totface);
1707
1708         CustomData_free(&em->vdata, 0);
1709         CustomData_free(&em->edata, 0);
1710         CustomData_free(&em->fdata, 0);
1711
1712         CustomData_copy(&um->vdata, &em->vdata, CD_MASK_EDITMESH, CD_CALLOC, 0);
1713         CustomData_copy(&um->edata, &em->edata, CD_MASK_EDITMESH, CD_CALLOC, 0);
1714         CustomData_copy(&um->fdata, &em->fdata, CD_MASK_EDITMESH, CD_CALLOC, 0);
1715
1716         /* now copy vertices */
1717
1718         if(um->totvert) evar= MEM_mallocN(um->totvert*sizeof(EditVert *), "vertex ar");
1719         for(a=0, evec= um->verts; a<um->totvert; a++, evec++) {
1720                 eve= addvertlist(em, evec->co, NULL);
1721                 evar[a]= eve;
1722
1723                 VECCOPY(eve->no, evec->no);
1724                 eve->f= evec->f;
1725                 eve->h= evec->h;
1726                 eve->keyindex= evec->keyindex;
1727                 eve->bweight= ((float)evec->bweight)/255.0f;
1728
1729                 CustomData_to_em_block(&um->vdata, &em->vdata, a, &eve->data);
1730         }
1731
1732         /* copy edges */
1733         for(a=0, eedc= um->edges; a<um->totedge; a++, eedc++) {
1734                 eed= addedgelist(em, evar[eedc->v1], evar[eedc->v2], NULL);
1735
1736                 eed->f= eedc->f;
1737                 eed->h= eedc->h;
1738                 eed->seam= eedc->seam;
1739                 eed->sharp= eedc->sharp;
1740                 eed->fgoni= eedc->fgoni;
1741                 eed->crease= ((float)eedc->crease)/255.0f;
1742                 eed->bweight= ((float)eedc->bweight)/255.0f;
1743                 CustomData_to_em_block(&um->edata, &em->edata, a, &eed->data);
1744         }
1745         
1746         /* copy faces */
1747         for(a=0, efac= um->faces; a<um->totface; a++, efac++) {
1748                 if(efac->v4 != -1)
1749                         efa= addfacelist(em, evar[efac->v1], evar[efac->v2], evar[efac->v3], evar[efac->v4], NULL, NULL);
1750                 else 
1751                         efa= addfacelist(em, evar[efac->v1], evar[efac->v2], evar[efac->v3], NULL, NULL ,NULL);
1752
1753                 efa->mat_nr= efac->mat_nr;
1754                 efa->flag= efac->flag;
1755                 efa->f= efac->f;
1756                 efa->h= efac->h;
1757                 efa->fgonf= efac->fgonf;
1758                 
1759                 CustomData_to_em_block(&um->fdata, &em->fdata, a, &efa->data);
1760         }
1761         
1762         end_editmesh_fastmalloc();
1763         if(evar) MEM_freeN(evar);
1764         
1765         em->totvert = um->totvert;
1766         em->totedge = um->totedge;
1767         em->totface = um->totface;
1768         /*restore stored editselections*/
1769         if(um->totsel){
1770                 EM_init_index_arrays(em, 1,1,1);
1771                 for(a=0, esec= um->selected; a<um->totsel; a++, esec++){
1772                         ese = MEM_callocN(sizeof(EditSelection), "Edit Selection");
1773                         ese->type = esec->type;
1774                         if(ese->type == EDITVERT) ese->data = EM_get_vert_for_index(esec->index); else
1775                         if(ese->type == EDITEDGE) ese->data = EM_get_edge_for_index(esec->index); else
1776                         if(ese->type == EDITFACE) ese->data = EM_get_face_for_index(esec->index);
1777                         BLI_addtail(&(em->selected),ese);
1778                 }
1779                 EM_free_index_arrays();
1780         }
1781
1782         /* restore total selections */
1783         EM_nvertices_selected(em);
1784         EM_nedges_selected(em);
1785         EM_nfaces_selected(em);
1786
1787 // XXX  retopo_free_paint();
1788 //      em->retopo_paint_data= retopo_paint_data_copy(um->retopo_paint_data);
1789 //      scene->toolsettings->retopo_mode= um->retopo_mode;
1790 //      if(scene->toolsettings->retopo_mode) {
1791 // XXX          if(G.vd->depths) G.vd->depths->damaged= 1;
1792 //              retopo_queue_updates(G.vd);
1793 //              retopo_paint_view_update(G.vd);
1794 //      }
1795         
1796 }
1797
1798 static void *getEditMesh(bContext *C)
1799 {
1800         Object *obedit= CTX_data_edit_object(C);
1801         if(obedit && obedit->type==OB_MESH) {
1802                 Mesh *me= obedit->data;
1803                 return me->edit_mesh;
1804         }
1805         return NULL;
1806 }
1807
1808 /* and this is all the undo system needs to know */
1809 void undo_push_mesh(bContext *C, char *name)
1810 {
1811         undo_editmode_push(C, name, getEditMesh, free_undoMesh, undoMesh_to_editMesh, editMesh_to_undoMesh, NULL);
1812 }
1813
1814
1815
1816 /* *************** END UNDO *************/
1817
1818 static EditVert **g_em_vert_array = NULL;
1819 static EditEdge **g_em_edge_array = NULL;
1820 static EditFace **g_em_face_array = NULL;
1821
1822 void EM_init_index_arrays(EditMesh *em, int forVert, int forEdge, int forFace)
1823 {
1824         EditVert *eve;
1825         EditEdge *eed;
1826         EditFace *efa;
1827         int i;
1828
1829         if (forVert) {
1830                 em->totvert= BLI_countlist(&em->verts);
1831
1832                 if(em->totvert) {
1833                         g_em_vert_array = MEM_mallocN(sizeof(*g_em_vert_array)*em->totvert, "em_v_arr");
1834
1835                         for (i=0,eve=em->verts.first; eve; i++,eve=eve->next)
1836                                 g_em_vert_array[i] = eve;
1837                 }
1838         }
1839
1840         if (forEdge) {
1841                 em->totedge= BLI_countlist(&em->edges);
1842
1843                 if(em->totedge) {
1844                         g_em_edge_array = MEM_mallocN(sizeof(*g_em_edge_array)*em->totedge, "em_e_arr");
1845
1846                         for (i=0,eed=em->edges.first; eed; i++,eed=eed->next)
1847                                 g_em_edge_array[i] = eed;
1848                 }
1849         }
1850
1851         if (forFace) {
1852                 em->totface= BLI_countlist(&em->faces);
1853
1854                 if(em->totface) {
1855                         g_em_face_array = MEM_mallocN(sizeof(*g_em_face_array)*em->totface, "em_f_arr");
1856
1857                         for (i=0,efa=em->faces.first; efa; i++,efa=efa->next)
1858                                 g_em_face_array[i] = efa;
1859                 }
1860         }
1861 }
1862
1863 void EM_free_index_arrays(void)
1864 {
1865         if (g_em_vert_array) MEM_freeN(g_em_vert_array);
1866         if (g_em_edge_array) MEM_freeN(g_em_edge_array);
1867         if (g_em_face_array) MEM_freeN(g_em_face_array);
1868         g_em_vert_array = NULL;
1869         g_em_edge_array = NULL;
1870         g_em_face_array = NULL;
1871 }
1872
1873 EditVert *EM_get_vert_for_index(int index)
1874 {
1875         return g_em_vert_array?g_em_vert_array[index]:NULL;
1876 }
1877
1878 EditEdge *EM_get_edge_for_index(int index)
1879 {
1880         return g_em_edge_array?g_em_edge_array[index]:NULL;
1881 }
1882
1883 EditFace *EM_get_face_for_index(int index)
1884 {
1885         return g_em_face_array?g_em_face_array[index]:NULL;
1886 }
1887
1888 /* can we edit UV's for this mesh?*/
1889 int EM_texFaceCheck(EditMesh *em)
1890 {
1891         /* some of these checks could be a touch overkill */
1892         if (    (em) &&
1893                         (em->faces.first) &&
1894                         (CustomData_has_layer(&em->fdata, CD_MTFACE)))
1895                 return 1;
1896         return 0;
1897 }
1898
1899 /* can we edit colors for this mesh?*/
1900 int EM_vertColorCheck(EditMesh *em)
1901 {
1902         /* some of these checks could be a touch overkill */
1903         if (    (em) &&
1904                         (em->faces.first) &&
1905                         (CustomData_has_layer(&em->fdata, CD_MCOL)))
1906                 return 1;
1907         return 0;
1908 }
1909
1910
1911 void em_setup_viewcontext(bContext *C, ViewContext *vc)
1912 {
1913         view3d_set_viewcontext(C, vc);
1914         
1915         if(vc->obedit) {
1916                 Mesh *me= vc->obedit->data;
1917                 vc->em= me->edit_mesh;
1918         }
1919 }