Made Multi-Paint and Locking more independent to better support future features.
[blender.git] / source / blender / editors / sculpt_paint / paint_vertex.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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
19  *
20  * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
21  * All rights reserved.
22  *
23  * The Original Code is: all of this file.
24  *
25  * Contributor(s): none yet.
26  *
27  * ***** END GPL LICENSE BLOCK *****
28  */
29
30 /** \file blender/editors/sculpt_paint/paint_vertex.c
31  *  \ingroup edsculpt
32  */
33
34
35 #include <math.h>
36 #include <string.h>
37
38 #ifdef WIN32
39 #include <io.h>
40 #else
41 #include <unistd.h>
42 #endif   
43
44 #include "MEM_guardedalloc.h"
45
46 #include "BLI_blenlib.h"
47 #include "BLI_math.h"
48 #include "BLI_utildefines.h"
49 #include "BLI_ghash.h"
50
51 #include "IMB_imbuf.h"
52 #include "IMB_imbuf_types.h"
53
54 #include "DNA_armature_types.h"
55 #include "DNA_mesh_types.h"
56 #include "DNA_particle_types.h"
57 #include "DNA_scene_types.h"
58 #include "DNA_brush_types.h"
59 #include "DNA_object_types.h"
60 #include "DNA_meshdata_types.h"
61
62 #include "RNA_access.h"
63 #include "RNA_define.h"
64
65 #include "BKE_DerivedMesh.h"
66 #include "BKE_action.h"
67 #include "BKE_brush.h"
68 #include "BKE_context.h"
69 #include "BKE_depsgraph.h"
70 #include "BKE_deform.h"
71 #include "BKE_mesh.h"
72 #include "BKE_modifier.h"
73 #include "BKE_object.h"
74 #include "BKE_paint.h"
75
76
77 #include "WM_api.h"
78 #include "WM_types.h"
79
80
81 #include "ED_armature.h"
82 #include "ED_mesh.h"
83 #include "ED_screen.h"
84 #include "ED_view3d.h"
85
86 #include "paint_intern.h"
87
88 /* brush->vertexpaint_tool */
89 #define VP_MIX  0
90 #define VP_ADD  1
91 #define VP_SUB  2
92 #define VP_MUL  3
93 #define VP_BLUR 4
94 #define VP_LIGHTEN      5
95 #define VP_DARKEN       6
96
97 /* polling - retrieve whether cursor should be set or operator should be done */
98
99
100 /* Returns true if vertex paint mode is active */
101 int vertex_paint_mode_poll(bContext *C)
102 {
103         Object *ob = CTX_data_active_object(C);
104
105         return ob && ob->mode == OB_MODE_VERTEX_PAINT && ((Mesh *)ob->data)->totface;
106 }
107
108 int vertex_paint_poll(bContext *C)
109 {
110         if(vertex_paint_mode_poll(C) && 
111            paint_brush(&CTX_data_tool_settings(C)->vpaint->paint)) {
112                 ScrArea *sa= CTX_wm_area(C);
113                 if(sa->spacetype==SPACE_VIEW3D) {
114                         ARegion *ar= CTX_wm_region(C);
115                         if(ar->regiontype==RGN_TYPE_WINDOW)
116                                 return 1;
117                         }
118                 }
119         return 0;
120 }
121
122 int weight_paint_mode_poll(bContext *C)
123 {
124         Object *ob = CTX_data_active_object(C);
125
126         return ob && ob->mode == OB_MODE_WEIGHT_PAINT && ((Mesh *)ob->data)->totface;
127 }
128
129 int weight_paint_poll(bContext *C)
130 {
131         Object *ob= CTX_data_active_object(C);
132         ScrArea *sa;
133
134         if(     (ob != NULL) &&
135                 (ob->mode & OB_MODE_WEIGHT_PAINT) &&
136                 (paint_brush(&CTX_data_tool_settings(C)->wpaint->paint) != NULL) &&
137                 (sa= CTX_wm_area(C)) &&
138                 (sa->spacetype == SPACE_VIEW3D)
139         ) {
140                 ARegion *ar= CTX_wm_region(C);
141                 if(ar->regiontype==RGN_TYPE_WINDOW) {
142                         return 1;
143                 }
144         }
145         return 0;
146 }
147
148 static VPaint *new_vpaint(int wpaint)
149 {
150         VPaint *vp= MEM_callocN(sizeof(VPaint), "VPaint");
151         
152         vp->flag= VP_AREA+VP_SPRAY;
153         
154         if(wpaint)
155                 vp->flag= VP_AREA;
156
157         return vp;
158 }
159
160 static int *get_indexarray(Mesh *me)
161 {
162         return MEM_mallocN(sizeof(int)*(me->totface+1), "vertexpaint");
163 }
164
165
166 /* in contradiction to cpack drawing colors, the MCOL colors (vpaint colors) are per byte! 
167    so not endian sensitive. Mcol = ABGR!!! so be cautious with cpack calls */
168
169 static unsigned int rgba_to_mcol(float r, float g, float b, float a)
170 {
171         int ir, ig, ib, ia;
172         unsigned int col;
173         char *cp;
174         
175         ir= floor(255.0f * r);
176         if(ir<0) ir= 0; else if(ir>255) ir= 255;
177         ig= floor(255.0f * g);
178         if(ig<0) ig= 0; else if(ig>255) ig= 255;
179         ib= floor(255.0f * b);
180         if(ib<0) ib= 0; else if(ib>255) ib= 255;
181         ia= floor(255.0f * a);
182         if(ia<0) ia= 0; else if(ia>255) ia= 255;
183         
184         cp= (char *)&col;
185         cp[0]= ia;
186         cp[1]= ib;
187         cp[2]= ig;
188         cp[3]= ir;
189         
190         return col;
191         
192 }
193
194 unsigned int vpaint_get_current_col(VPaint *vp)
195 {
196         Brush *brush = paint_brush(&vp->paint);
197         return rgba_to_mcol(brush->rgb[0], brush->rgb[1], brush->rgb[2], 1.0f);
198 }
199
200 static void do_shared_vertexcol(Mesh *me)
201 {
202         /* if no mcol: do not do */
203         /* if tface: only the involved faces, otherwise all */
204         MFace *mface;
205         MTFace *tface;
206         int a;
207         short *scolmain, *scol;
208         char *mcol;
209         
210         if(me->mcol==NULL || me->totvert==0 || me->totface==0) return;
211         
212         scolmain= MEM_callocN(4*sizeof(short)*me->totvert, "colmain");
213         
214         tface= me->mtface;
215         mface= me->mface;
216         mcol= (char *)me->mcol;
217         for(a=me->totface; a>0; a--, mface++, mcol+=16) {
218                 if((tface && tface->mode & TF_SHAREDCOL) || (me->editflag & ME_EDIT_PAINT_MASK)==0) {
219                         scol= scolmain+4*mface->v1;
220                         scol[0]++; scol[1]+= mcol[1]; scol[2]+= mcol[2]; scol[3]+= mcol[3];
221                         scol= scolmain+4*mface->v2;
222                         scol[0]++; scol[1]+= mcol[5]; scol[2]+= mcol[6]; scol[3]+= mcol[7];
223                         scol= scolmain+4*mface->v3;
224                         scol[0]++; scol[1]+= mcol[9]; scol[2]+= mcol[10]; scol[3]+= mcol[11];
225                         if(mface->v4) {
226                                 scol= scolmain+4*mface->v4;
227                                 scol[0]++; scol[1]+= mcol[13]; scol[2]+= mcol[14]; scol[3]+= mcol[15];
228                         }
229                 }
230                 if(tface) tface++;
231         }
232         
233         a= me->totvert;
234         scol= scolmain;
235         while(a--) {
236                 if(scol[0]>1) {
237                         scol[1]/= scol[0];
238                         scol[2]/= scol[0];
239                         scol[3]/= scol[0];
240                 }
241                 scol+= 4;
242         }
243         
244         tface= me->mtface;
245         mface= me->mface;
246         mcol= (char *)me->mcol;
247         for(a=me->totface; a>0; a--, mface++, mcol+=16) {
248                 if((tface && tface->mode & TF_SHAREDCOL) || (me->editflag & ME_EDIT_PAINT_MASK)==0) {
249                         scol= scolmain+4*mface->v1;
250                         mcol[1]= scol[1]; mcol[2]= scol[2]; mcol[3]= scol[3];
251                         scol= scolmain+4*mface->v2;
252                         mcol[5]= scol[1]; mcol[6]= scol[2]; mcol[7]= scol[3];
253                         scol= scolmain+4*mface->v3;
254                         mcol[9]= scol[1]; mcol[10]= scol[2]; mcol[11]= scol[3];
255                         if(mface->v4) {
256                                 scol= scolmain+4*mface->v4;
257                                 mcol[13]= scol[1]; mcol[14]= scol[2]; mcol[15]= scol[3];
258                         }
259                 }
260                 if(tface) tface++;
261         }
262
263         MEM_freeN(scolmain);
264 }
265
266 static void make_vertexcol(Object *ob)  /* single ob */
267 {
268         Mesh *me;
269         if(!ob || ob->id.lib) return;
270         me= get_mesh(ob);
271         if(me==NULL) return;
272         if(me->edit_mesh) return;
273
274         /* copies from shadedisplist to mcol */
275         if(!me->mcol) {
276                 CustomData_add_layer(&me->fdata, CD_MCOL, CD_CALLOC, NULL, me->totface);
277                 mesh_update_customdata_pointers(me);
278         }
279
280         //if(shade)
281         //      shadeMeshMCol(scene, ob, me);
282         //else
283
284         memset(me->mcol, 255, 4*sizeof(MCol)*me->totface);
285         
286         DAG_id_tag_update(&me->id, 0);
287         
288 }
289
290 static void copy_vpaint_prev(VPaint *vp, unsigned int *mcol, int tot)
291 {
292         if(vp->vpaint_prev) {
293                 MEM_freeN(vp->vpaint_prev);
294                 vp->vpaint_prev= NULL;
295         }
296         vp->tot= tot;   
297         
298         if(mcol==NULL || tot==0) return;
299         
300         vp->vpaint_prev= MEM_mallocN(4*sizeof(int)*tot, "vpaint_prev");
301         memcpy(vp->vpaint_prev, mcol, 4*sizeof(int)*tot);
302         
303 }
304
305 static void copy_wpaint_prev (VPaint *wp, MDeformVert *dverts, int dcount)
306 {
307         if (wp->wpaint_prev) {
308                 free_dverts(wp->wpaint_prev, wp->tot);
309                 wp->wpaint_prev= NULL;
310         }
311         
312         if(dverts && dcount) {
313                 
314                 wp->wpaint_prev = MEM_mallocN (sizeof(MDeformVert)*dcount, "wpaint prev");
315                 wp->tot = dcount;
316                 copy_dverts (wp->wpaint_prev, dverts, dcount);
317         }
318 }
319
320
321 void vpaint_fill(Object *ob, unsigned int paintcol)
322 {
323         Mesh *me;
324         MFace *mf;
325         unsigned int *mcol;
326         int i, selected;
327
328         me= get_mesh(ob);
329         if(me==NULL || me->totface==0) return;
330
331         if(!me->mcol)
332                 make_vertexcol(ob);
333
334         selected= (me->editflag & ME_EDIT_PAINT_MASK);
335
336         mf = me->mface;
337         mcol = (unsigned int*)me->mcol;
338         for (i = 0; i < me->totface; i++, mf++, mcol+=4) {
339                 if (!selected || mf->flag & ME_FACE_SEL) {
340                         mcol[0] = paintcol;
341                         mcol[1] = paintcol;
342                         mcol[2] = paintcol;
343                         mcol[3] = paintcol;
344                 }
345         }
346         
347         DAG_id_tag_update(&me->id, 0);
348 }
349
350 /* fills in the selected faces with the current weight and vertex group */
351 void wpaint_fill(VPaint *wp, Object *ob, float paintweight)
352 {
353         Mesh *me;
354         MFace *mface;
355         MDeformWeight *dw, *uw;
356         int *indexar;
357         int index, vgroup;
358         unsigned int faceverts[5]={0,0,0,0,0};
359         unsigned char i;
360         int vgroup_mirror= -1;
361         int selected;
362         
363         me= ob->data;
364         if(me==NULL || me->totface==0 || me->dvert==NULL || !me->mface) return;
365
366         selected= (me->editflag & ME_EDIT_PAINT_MASK);
367
368         indexar= get_indexarray(me);
369
370         if(selected) {
371                 for(index=0, mface=me->mface; index<me->totface; index++, mface++) {
372                         if((mface->flag & ME_FACE_SEL)==0)
373                                 indexar[index]= 0;
374                         else
375                                 indexar[index]= index+1;
376                 }
377         }
378         else {
379                 for(index=0; index<me->totface; index++)
380                         indexar[index]= index+1;
381         }
382         
383         vgroup= ob->actdef-1;
384         
385         /* directly copied from weight_paint, should probaby split into a separate function */
386         /* if mirror painting, find the other group */          
387         if(me->editflag & ME_EDIT_MIRROR_X) {
388                 bDeformGroup *defgroup= BLI_findlink(&ob->defbase, ob->actdef-1);
389                 if(defgroup) {
390                         bDeformGroup *curdef;
391                         int actdef= 0;
392                         char name[32];
393
394                         flip_side_name(name, defgroup->name, FALSE);
395
396                         for (curdef = ob->defbase.first; curdef; curdef=curdef->next, actdef++)
397                                 if (!strcmp(curdef->name, name))
398                                         break;
399                         if(curdef==NULL) {
400                                 int olddef= ob->actdef; /* tsk, ED_vgroup_add sets the active defgroup */
401                                 curdef= ED_vgroup_add_name (ob, name);
402                                 ob->actdef= olddef;
403                         }
404                         
405                         if(curdef && curdef!=defgroup)
406                                 vgroup_mirror= actdef;
407                 }
408         }
409         /* end copy from weight_paint*/
410         
411         copy_wpaint_prev(wp, me->dvert, me->totvert);
412         
413         for(index=0; index<me->totface; index++) {
414                 if(indexar[index] && indexar[index]<=me->totface) {
415                         mface= me->mface + (indexar[index]-1);
416                         /* just so we can loop through the verts */
417                         faceverts[0]= mface->v1;
418                         faceverts[1]= mface->v2;
419                         faceverts[2]= mface->v3;
420                         faceverts[3]= mface->v4;
421                         for (i=0; i<3 || faceverts[i]; i++) {
422                                 if(!((me->dvert+faceverts[i])->flag)) {
423                                         dw= defvert_verify_index(me->dvert+faceverts[i], vgroup);
424                                         if(dw) {
425                                                 uw= defvert_verify_index(wp->wpaint_prev+faceverts[i], vgroup);
426                                                 uw->weight= dw->weight; /* set the undo weight */
427                                                 dw->weight= paintweight;
428                                                 
429                                                 if(me->editflag & ME_EDIT_MIRROR_X) {   /* x mirror painting */
430                                                         int j= mesh_get_x_mirror_vert(ob, faceverts[i]);
431                                                         if(j>=0) {
432                                                                 /* copy, not paint again */
433                                                                 if(vgroup_mirror != -1) {
434                                                                         dw= defvert_verify_index(me->dvert+j, vgroup_mirror);
435                                                                         uw= defvert_verify_index(wp->wpaint_prev+j, vgroup_mirror);
436                                                                 } else {
437                                                                         dw= defvert_verify_index(me->dvert+j, vgroup);
438                                                                         uw= defvert_verify_index(wp->wpaint_prev+j, vgroup);
439                                                                 }
440                                                                 uw->weight= dw->weight; /* set the undo weight */
441                                                                 dw->weight= paintweight;
442                                                         }
443                                                 }
444                                         }
445                                         (me->dvert+faceverts[i])->flag= 1;
446                                 }
447                         }
448                 }
449         }
450         
451         index=0;
452         while (index<me->totvert) {
453                 (me->dvert+index)->flag= 0;
454                 index++;
455         }
456         
457         MEM_freeN(indexar);
458         copy_wpaint_prev(wp, NULL, 0);
459
460         DAG_id_tag_update(&me->id, 0);
461 }
462
463 /* XXX: should be re-implemented as a vertex/weight paint 'color correct' operator
464  
465 void vpaint_dogamma(Scene *scene)
466 {
467         VPaint *vp= scene->toolsettings->vpaint;
468         Mesh *me;
469         Object *ob;
470         float igam, fac;
471         int a, temp;
472         unsigned char *cp, gamtab[256];
473
474         ob= OBACT;
475         me= get_mesh(ob);
476
477         if(!(ob->mode & OB_MODE_VERTEX_PAINT)) return;
478         if(me==0 || me->mcol==0 || me->totface==0) return;
479
480         igam= 1.0/vp->gamma;
481         for(a=0; a<256; a++) {
482                 
483                 fac= ((float)a)/255.0;
484                 fac= vp->mul*pow( fac, igam);
485                 
486                 temp= 255.9*fac;
487                 
488                 if(temp<=0) gamtab[a]= 0;
489                 else if(temp>=255) gamtab[a]= 255;
490                 else gamtab[a]= temp;
491         }
492
493         a= 4*me->totface;
494         cp= (unsigned char *)me->mcol;
495         while(a--) {
496                 
497                 cp[1]= gamtab[ cp[1] ];
498                 cp[2]= gamtab[ cp[2] ];
499                 cp[3]= gamtab[ cp[3] ];
500                 
501                 cp+= 4;
502         }
503 }
504  */
505
506 static unsigned int mcol_blend(unsigned int col1, unsigned int col2, int fac)
507 {
508         char *cp1, *cp2, *cp;
509         int mfac;
510         unsigned int col=0;
511         
512         if(fac==0) return col1;
513         if(fac>=255) return col2;
514
515         mfac= 255-fac;
516         
517         cp1= (char *)&col1;
518         cp2= (char *)&col2;
519         cp=  (char *)&col;
520         
521         cp[0]= 255;
522         cp[1]= (mfac*cp1[1]+fac*cp2[1])/255;
523         cp[2]= (mfac*cp1[2]+fac*cp2[2])/255;
524         cp[3]= (mfac*cp1[3]+fac*cp2[3])/255;
525         
526         return col;
527 }
528
529 static unsigned int mcol_add(unsigned int col1, unsigned int col2, int fac)
530 {
531         char *cp1, *cp2, *cp;
532         int temp;
533         unsigned int col=0;
534         
535         if(fac==0) return col1;
536         
537         cp1= (char *)&col1;
538         cp2= (char *)&col2;
539         cp=  (char *)&col;
540         
541         cp[0]= 255;
542         temp= cp1[1] + ((fac*cp2[1])/255);
543         if(temp>254) cp[1]= 255; else cp[1]= temp;
544         temp= cp1[2] + ((fac*cp2[2])/255);
545         if(temp>254) cp[2]= 255; else cp[2]= temp;
546         temp= cp1[3] + ((fac*cp2[3])/255);
547         if(temp>254) cp[3]= 255; else cp[3]= temp;
548         
549         return col;
550 }
551
552 static unsigned int mcol_sub(unsigned int col1, unsigned int col2, int fac)
553 {
554         char *cp1, *cp2, *cp;
555         int temp;
556         unsigned int col=0;
557         
558         if(fac==0) return col1;
559         
560         cp1= (char *)&col1;
561         cp2= (char *)&col2;
562         cp=  (char *)&col;
563         
564         cp[0]= 255;
565         temp= cp1[1] - ((fac*cp2[1])/255);
566         if(temp<0) cp[1]= 0; else cp[1]= temp;
567         temp= cp1[2] - ((fac*cp2[2])/255);
568         if(temp<0) cp[2]= 0; else cp[2]= temp;
569         temp= cp1[3] - ((fac*cp2[3])/255);
570         if(temp<0) cp[3]= 0; else cp[3]= temp;
571         
572         return col;
573 }
574
575 static unsigned int mcol_mul(unsigned int col1, unsigned int col2, int fac)
576 {
577         char *cp1, *cp2, *cp;
578         int mfac;
579         unsigned int col=0;
580         
581         if(fac==0) return col1;
582
583         mfac= 255-fac;
584         
585         cp1= (char *)&col1;
586         cp2= (char *)&col2;
587         cp=  (char *)&col;
588         
589         /* first mul, then blend the fac */
590         cp[0]= 255;
591         cp[1]= (mfac*cp1[1] + fac*((cp2[1]*cp1[1])/255)  )/255;
592         cp[2]= (mfac*cp1[2] + fac*((cp2[2]*cp1[2])/255)  )/255;
593         cp[3]= (mfac*cp1[3] + fac*((cp2[3]*cp1[3])/255)  )/255;
594
595         
596         return col;
597 }
598
599 static unsigned int mcol_lighten(unsigned int col1, unsigned int col2, int fac)
600 {
601         char *cp1, *cp2, *cp;
602         int mfac;
603         unsigned int col=0;
604         
605         if(fac==0) return col1;
606         if(fac>=255) return col2;
607
608         mfac= 255-fac;
609         
610         cp1= (char *)&col1;
611         cp2= (char *)&col2;
612         cp=  (char *)&col;
613         
614         /* See if are lighter, if so mix, else dont do anything.
615         if the paint col is darker then the original, then ignore */
616         if (cp1[1]+cp1[2]+cp1[3] > cp2[1]+cp2[2]+cp2[3])
617                 return col1;
618         
619         cp[0]= 255;
620         cp[1]= (mfac*cp1[1]+fac*cp2[1])/255;
621         cp[2]= (mfac*cp1[2]+fac*cp2[2])/255;
622         cp[3]= (mfac*cp1[3]+fac*cp2[3])/255;
623         
624         return col;
625 }
626
627 static unsigned int mcol_darken(unsigned int col1, unsigned int col2, int fac)
628 {
629         char *cp1, *cp2, *cp;
630         int mfac;
631         unsigned int col=0;
632         
633         if(fac==0) return col1;
634         if(fac>=255) return col2;
635
636         mfac= 255-fac;
637         
638         cp1= (char *)&col1;
639         cp2= (char *)&col2;
640         cp=  (char *)&col;
641         
642         /* See if were darker, if so mix, else dont do anything.
643         if the paint col is brighter then the original, then ignore */
644         if (cp1[1]+cp1[2]+cp1[3] < cp2[1]+cp2[2]+cp2[3])
645                 return col1;
646         
647         cp[0]= 255;
648         cp[1]= (mfac*cp1[1]+fac*cp2[1])/255;
649         cp[2]= (mfac*cp1[2]+fac*cp2[2])/255;
650         cp[3]= (mfac*cp1[3]+fac*cp2[3])/255;
651         return col;
652 }
653
654 static void vpaint_blend(VPaint *vp, unsigned int *col, unsigned int *colorig, unsigned int paintcol, int alpha)
655 {
656         Brush *brush = paint_brush(&vp->paint);
657
658         if(brush->vertexpaint_tool==VP_MIX || brush->vertexpaint_tool==VP_BLUR) *col= mcol_blend( *col, paintcol, alpha);
659         else if(brush->vertexpaint_tool==VP_ADD) *col= mcol_add( *col, paintcol, alpha);
660         else if(brush->vertexpaint_tool==VP_SUB) *col= mcol_sub( *col, paintcol, alpha);
661         else if(brush->vertexpaint_tool==VP_MUL) *col= mcol_mul( *col, paintcol, alpha);
662         else if(brush->vertexpaint_tool==VP_LIGHTEN) *col= mcol_lighten( *col, paintcol, alpha);
663         else if(brush->vertexpaint_tool==VP_DARKEN) *col= mcol_darken( *col, paintcol, alpha);
664         
665         /* if no spray, clip color adding with colorig & orig alpha */
666         if((vp->flag & VP_SPRAY)==0) {
667                 unsigned int testcol=0, a;
668                 char *cp, *ct, *co;
669                 
670                 alpha= (int)(255.0f*brush_alpha(brush));
671                 
672                 if(brush->vertexpaint_tool==VP_MIX || brush->vertexpaint_tool==VP_BLUR) testcol= mcol_blend( *colorig, paintcol, alpha);
673                 else if(brush->vertexpaint_tool==VP_ADD) testcol= mcol_add( *colorig, paintcol, alpha);
674                 else if(brush->vertexpaint_tool==VP_SUB) testcol= mcol_sub( *colorig, paintcol, alpha);
675                 else if(brush->vertexpaint_tool==VP_MUL) testcol= mcol_mul( *colorig, paintcol, alpha);
676                 else if(brush->vertexpaint_tool==VP_LIGHTEN)  testcol= mcol_lighten( *colorig, paintcol, alpha);
677                 else if(brush->vertexpaint_tool==VP_DARKEN)   testcol= mcol_darken( *colorig, paintcol, alpha);
678                 
679                 cp= (char *)col;
680                 ct= (char *)&testcol;
681                 co= (char *)colorig;
682                 
683                 for(a=0; a<4; a++) {
684                         if( ct[a]<co[a] ) {
685                                 if( cp[a]<ct[a] ) cp[a]= ct[a];
686                                 else if( cp[a]>co[a] ) cp[a]= co[a];
687                         }
688                         else {
689                                 if( cp[a]<co[a] ) cp[a]= co[a];
690                                 else if( cp[a]>ct[a] ) cp[a]= ct[a];
691                         }
692                 }
693         }
694 }
695
696
697 static int sample_backbuf_area(ViewContext *vc, int *indexar, int totface, int x, int y, float size)
698 {
699         struct ImBuf *ibuf;
700         int a, tot=0, index;
701         
702         /* brecht: disabled this because it obviously failes for
703            brushes with size > 64, why is this here? */
704         /*if(size>64.0) size= 64.0;*/
705         
706         ibuf= view3d_read_backbuf(vc, x-size, y-size, x+size, y+size);
707         if(ibuf) {
708                 unsigned int *rt= ibuf->rect;
709
710                 memset(indexar, 0, sizeof(int)*(totface+1));
711                 
712                 size= ibuf->x*ibuf->y;
713                 while(size--) {
714                                 
715                         if(*rt) {
716                                 index= WM_framebuffer_to_index(*rt);
717                                 if(index>0 && index<=totface)
718                                         indexar[index] = 1;
719                         }
720                 
721                         rt++;
722                 }
723                 
724                 for(a=1; a<=totface; a++) {
725                         if(indexar[a]) indexar[tot++]= a;
726                 }
727
728                 IMB_freeImBuf(ibuf);
729         }
730         
731         return tot;
732 }
733
734 static float calc_vp_alpha_dl(VPaint *vp, ViewContext *vc, float vpimat[][3], float *vert_nor, const float mval[2], float pressure)
735 {
736         Brush *brush = paint_brush(&vp->paint);
737         float fac, fac_2, size, dx, dy;
738         float alpha;
739         int vertco[2];
740         const int radius= brush_size(brush);
741
742         project_int_noclip(vc->ar, vert_nor, vertco);
743         dx= mval[0]-vertco[0];
744         dy= mval[1]-vertco[1];
745         
746         if (brush_use_size_pressure(brush))
747                 size = pressure * radius;
748         else
749                 size = radius;
750         
751         fac_2= dx*dx + dy*dy;
752         if(fac_2 > size*size) return 0.f;
753         fac = sqrtf(fac_2);
754         
755         alpha= brush_alpha(brush) * brush_curve_strength_clamp(brush, fac, size);
756         
757         if (brush_use_alpha_pressure(brush))
758                 alpha *= pressure;
759                 
760         if(vp->flag & VP_NORMALS) {
761                 float *no= vert_nor+3;
762                 
763                 /* transpose ! */
764                 fac= vpimat[2][0]*no[0]+vpimat[2][1]*no[1]+vpimat[2][2]*no[2];
765                 if(fac > 0.0f) {
766                         dx= vpimat[0][0]*no[0]+vpimat[0][1]*no[1]+vpimat[0][2]*no[2];
767                         dy= vpimat[1][0]*no[0]+vpimat[1][1]*no[1]+vpimat[1][2]*no[2];
768                         
769                         alpha*= fac/sqrtf(dx*dx + dy*dy + fac*fac);
770                 }
771                 else return 0.f;
772         }
773         
774         return alpha;
775 }
776
777 static void wpaint_blend(VPaint *wp, MDeformWeight *dw, MDeformWeight *uw, float alpha, float paintval, int flip)
778 {
779         Brush *brush = paint_brush(&wp->paint);
780         int tool = brush->vertexpaint_tool;
781         
782         if(dw==NULL || uw==NULL) return;
783         
784         if (flip) {
785                 switch(tool) {
786                         case VP_MIX:
787                                 paintval = 1.f - paintval; break;
788                         case VP_ADD:
789                                 tool= VP_SUB; break;
790                         case VP_SUB:
791                                 tool= VP_ADD; break;
792                         case VP_LIGHTEN:
793                                 tool= VP_DARKEN; break;
794                         case VP_DARKEN:
795                                 tool= VP_LIGHTEN; break;
796                 }
797         }
798         
799         if(tool==VP_MIX || tool==VP_BLUR)
800                 dw->weight = paintval*alpha + dw->weight*(1.0f-alpha);
801         else if(tool==VP_ADD)
802                 dw->weight += paintval*alpha;
803         else if(tool==VP_SUB) 
804                 dw->weight -= paintval*alpha;
805         else if(tool==VP_MUL) 
806                 /* first mul, then blend the fac */
807                 dw->weight = ((1.0f-alpha) + alpha*paintval)*dw->weight;
808         else if(tool==VP_LIGHTEN) {
809                 if (dw->weight < paintval)
810                         dw->weight = paintval*alpha + dw->weight*(1.0f-alpha);
811         } else if(tool==VP_DARKEN) {
812                 if (dw->weight > paintval)
813                         dw->weight = paintval*alpha + dw->weight*(1.0f-alpha);
814         }
815         CLAMP(dw->weight, 0.0f, 1.0f);
816         
817         /* if no spray, clip result with orig weight & orig alpha */
818         if((wp->flag & VP_SPRAY)==0) {
819                 float testw=0.0f;
820                 
821                 alpha= brush_alpha(brush);
822                 if(tool==VP_MIX || tool==VP_BLUR)
823                         testw = paintval*alpha + uw->weight*(1.0f-alpha);
824                 else if(tool==VP_ADD)
825                         testw = uw->weight + paintval*alpha;
826                 else if(tool==VP_SUB) 
827                         testw = uw->weight - paintval*alpha;
828                 else if(tool==VP_MUL) 
829                         /* first mul, then blend the fac */
830                         testw = ((1.0f-alpha) + alpha*paintval)*uw->weight;
831                 else if(tool==VP_LIGHTEN) {
832                         if (uw->weight < paintval)
833                                 testw = paintval*alpha + uw->weight*(1.0f-alpha);
834                         else
835                                 testw = uw->weight;
836                 } else if(tool==VP_DARKEN) {
837                         if (uw->weight > paintval)
838                                 testw = paintval*alpha + uw->weight*(1.0f-alpha);
839                         else
840                                 testw = uw->weight;
841                 }
842                 CLAMP(testw, 0.0f, 1.0f);
843                 
844                 if( testw<uw->weight ) {
845                         if(dw->weight < testw) dw->weight= testw;
846                         else if(dw->weight > uw->weight) dw->weight= uw->weight;
847                 }
848                 else {
849                         if(dw->weight > testw) dw->weight= testw;
850                         else if(dw->weight < uw->weight) dw->weight= uw->weight;
851                 }
852         }
853         
854 }
855
856 /* ----------------------------------------------------- */
857
858 /* used for 3d view, on active object, assumes me->dvert exists */
859 /* if mode==1: */
860 /*     samples cursor location, and gives menu with vertex groups to activate */
861 /* else */
862 /*     sets wp->weight to the closest weight value to vertex */
863 /*     note: we cant sample frontbuf, weight colors are interpolated too unpredictable */
864 static void sample_wpaint(Scene *scene, ARegion *ar, View3D *UNUSED(v3d), int mode)
865 {
866         ViewContext vc;
867         ToolSettings *ts= scene->toolsettings;
868         Object *ob= OBACT;
869         Mesh *me= get_mesh(ob);
870         int index;
871         int mval[2] = {0, 0}, sco[2];
872         int vgroup= ob->actdef-1;
873
874         if (!me) return;
875         
876 //      getmouseco_areawin(mval);
877         index= view3d_sample_backbuf(&vc, mval[0], mval[1]);
878         
879         if(index && index<=me->totface) {
880                 MFace *mface;
881                 
882                 mface= ((MFace *)me->mface) + index-1;
883                 
884                 if(mode==1) {   /* sampe which groups are in here */
885                         MDeformVert *dv;
886                         int a, totgroup;
887                         
888                         totgroup= BLI_countlist(&ob->defbase);
889                         if(totgroup) {
890                                 int totmenu=0;
891                                 int *groups=MEM_callocN(totgroup*sizeof(int), "groups");
892                                 
893                                 dv= me->dvert+mface->v1;
894                                 for(a=0; a<dv->totweight; a++) {
895                                         if (dv->dw[a].def_nr<totgroup)
896                                                 groups[dv->dw[a].def_nr]= 1;
897                                 }
898                                 dv= me->dvert+mface->v2;
899                                 for(a=0; a<dv->totweight; a++) {
900                                         if (dv->dw[a].def_nr<totgroup)
901                                                 groups[dv->dw[a].def_nr]= 1;
902                                 }
903                                 dv= me->dvert+mface->v3;
904                                 for(a=0; a<dv->totweight; a++) {
905                                         if (dv->dw[a].def_nr<totgroup)
906                                                 groups[dv->dw[a].def_nr]= 1;
907                                 }
908                                 if(mface->v4) {
909                                         dv= me->dvert+mface->v4;
910                                         for(a=0; a<dv->totweight; a++) {
911                                                 if (dv->dw[a].def_nr<totgroup)
912                                                         groups[dv->dw[a].def_nr]= 1;
913                                         }
914                                 }
915                                 for(a=0; a<totgroup; a++)
916                                         if(groups[a]) totmenu++;
917                                 
918                                 if(totmenu==0) {
919                                         //notice("No Vertex Group Selected");
920                                 }
921                                 else {
922                                         bDeformGroup *dg;
923                                         short val;
924                                         char item[40], *str= MEM_mallocN(40*totmenu+40, "menu");
925                                         
926                                         strcpy(str, "Vertex Groups %t");
927                                         for(a=0, dg=ob->defbase.first; dg && a<totgroup; a++, dg= dg->next) {
928                                                 if(groups[a]) {
929                                                         sprintf(item, "|%s %%x%d", dg->name, a);
930                                                         strcat(str, item);
931                                                 }
932                                         }
933                                         
934                                         val= 0; // XXX pupmenu(str);
935                                         if(val>=0) {
936                                                 ob->actdef= val+1;
937                                                 DAG_id_tag_update(&me->id, 0);
938                                         }
939                                         MEM_freeN(str);
940                                 }
941                                 MEM_freeN(groups);
942                         }
943 //                      else notice("No Vertex Groups in Object");
944                 }
945                 else {
946                         DerivedMesh *dm;
947                         float w1, w2, w3, w4, co[3], fac;
948                         
949                         dm = mesh_get_derived_final(scene, ob, CD_MASK_BAREMESH);
950                         if(dm->getVertCo==NULL) {
951                                 //notice("Not supported yet");
952                         }
953                         else {
954                                 /* calc 3 or 4 corner weights */
955                                 dm->getVertCo(dm, mface->v1, co);
956                                 project_int_noclip(ar, co, sco);
957                                 w1= ((mval[0]-sco[0])*(mval[0]-sco[0]) + (mval[1]-sco[1])*(mval[1]-sco[1]));
958                                 
959                                 dm->getVertCo(dm, mface->v2, co);
960                                 project_int_noclip(ar, co, sco);
961                                 w2= ((mval[0]-sco[0])*(mval[0]-sco[0]) + (mval[1]-sco[1])*(mval[1]-sco[1]));
962                                 
963                                 dm->getVertCo(dm, mface->v3, co);
964                                 project_int_noclip(ar, co, sco);
965                                 w3= ((mval[0]-sco[0])*(mval[0]-sco[0]) + (mval[1]-sco[1])*(mval[1]-sco[1]));
966                                 
967                                 if(mface->v4) {
968                                         dm->getVertCo(dm, mface->v4, co);
969                                         project_int_noclip(ar, co, sco);
970                                         w4= ((mval[0]-sco[0])*(mval[0]-sco[0]) + (mval[1]-sco[1])*(mval[1]-sco[1]));
971                                 }
972                                 else w4= 1.0e10;
973                                 
974                                 fac= MIN4(w1, w2, w3, w4);
975                                 if(w1==fac) {
976                                         ts->vgroup_weight= defvert_find_weight(me->dvert+mface->v1, vgroup);
977                                 }
978                                 else if(w2==fac) {
979                                         ts->vgroup_weight= defvert_find_weight(me->dvert+mface->v2, vgroup);
980                                 }
981                                 else if(w3==fac) {
982                                         ts->vgroup_weight= defvert_find_weight(me->dvert+mface->v3, vgroup);
983                                 }
984                                 else if(w4==fac) {
985                                         if(mface->v4) {
986                                                 ts->vgroup_weight= defvert_find_weight(me->dvert+mface->v4, vgroup);
987                                         }
988                                 }
989                         }
990                         dm->release(dm);
991                 }               
992                 
993         }
994         
995 }
996
997 static void do_weight_paint_auto_normalize(MDeformVert *dvert, 
998                                            int paint_nr, char *map)
999 {
1000 //      MDeformWeight *dw = dvert->dw;
1001         float sum=0.0f, fac=0.0f, paintw=0.0f;
1002         int i, tot=0;
1003
1004         if (!map)
1005                 return;
1006
1007         for (i=0; i<dvert->totweight; i++) {
1008                 if (dvert->dw[i].def_nr == paint_nr)
1009                         paintw = dvert->dw[i].weight;
1010
1011                 if (map[dvert->dw[i].def_nr]) {
1012                         tot += 1;
1013                         if (dvert->dw[i].def_nr != paint_nr)
1014                                 sum += dvert->dw[i].weight;
1015                 }
1016         }
1017         
1018         if (!tot || sum <= (1.0f - paintw))
1019                 return;
1020
1021         fac = sum / (1.0f - paintw);
1022         fac = fac==0.0f ? 1.0f : 1.0f / fac;
1023
1024         for (i=0; i<dvert->totweight; i++) {
1025                 if (map[dvert->dw[i].def_nr]) {
1026                         if (dvert->dw[i].def_nr != paint_nr)
1027                                 dvert->dw[i].weight *= fac;
1028                 }
1029         }
1030 }
1031 // Jason was here: the active group should be involved in auto normalize
1032 static void do_weight_paint_auto_normalize_all_groups(MDeformVert *dvert, char *map)
1033 {
1034 //      MDeformWeight *dw = dvert->dw;
1035         float sum=0.0f, fac=0.0f;
1036         int i, tot=0;
1037
1038         if (!map)
1039                 return;
1040
1041         for (i=0; i<dvert->totweight; i++) {
1042                 if (map[dvert->dw[i].def_nr]) {
1043                         tot += 1;
1044                         sum += dvert->dw[i].weight;
1045                 }
1046         }
1047         
1048         if (!tot || sum == 1.0f)
1049                 return;
1050
1051         fac = sum;
1052         fac = fac==0.0f ? 1.0f : 1.0f / fac;
1053
1054         for (i=0; i<dvert->totweight; i++) {
1055                 if (map[dvert->dw[i].def_nr]) {
1056                         dvert->dw[i].weight *= fac;
1057                 }
1058         }
1059 }
1060 /* Jason was here */
1061 /*
1062 See if the current deform vertex has a locked group
1063 */
1064 static char has_locked_group(MDeformVert *dvert, char *flags)
1065 {
1066         int i;
1067         for(i = 0; i < dvert->totweight; i++) {
1068                 if(flags[(dvert->dw+i)->def_nr] && (dvert->dw+i)->weight > 0.0f) {
1069                         return TRUE;
1070                 }
1071         }
1072         return FALSE;
1073 }
1074 /*Jason was here
1075 gen_lck_flags gets the status of "flag" for each bDeformGroup
1076 in ob->defbase and returns an array containing them
1077 */
1078 static char* gen_lck_flags(Object* ob, int defcnt, char *map)
1079 {
1080         char is_locked = FALSE;
1081         int i;
1082         //int defcnt = BLI_countlist(&ob->defbase);
1083         char *flags = MEM_mallocN(defcnt*sizeof(char), "defflags");
1084         bDeformGroup *defgroup;
1085         int selected = 0;
1086
1087         for(i = 0, defgroup = ob->defbase.first; i < defcnt && defgroup; defgroup = defgroup->next, i++) {
1088                 flags[i] = defgroup->flag;
1089                 if(flags[i]) {
1090                         is_locked = TRUE;
1091                 }
1092         }
1093         if(is_locked){
1094                 return flags;
1095         }
1096         // don't forget to free it if it is unneeded
1097         MEM_freeN(flags);
1098         return NULL;
1099 }
1100 /* Jason was here */
1101 static int has_locked_group_selected(int defcnt, char *selection, char *flags) {
1102         int i;
1103         for(i = 0; i < defcnt; i++) {
1104                 if(selection[i] && flags[i]) {
1105                         return TRUE;
1106                 }
1107         }
1108         return FALSE;
1109 }
1110
1111 /* Jason was here */
1112 static int has_unselected_unlocked_bone_group(int defcnt, char *selection, int selected, char *flags, char *bone_groups) {
1113         int i;
1114         if(defcnt == selected) {
1115                 return FALSE;
1116         }
1117         for(i = 0; i < defcnt; i++) {
1118                 if(bone_groups[i] && !selection[i] && !flags[i]) {
1119                         return TRUE;
1120                 }
1121         }
1122         return FALSE;
1123 }
1124
1125 /*Jason*/
1126 static void multipaint_selection(MDeformVert *dvert, float change, char *selection, int defcnt) {
1127         int i;
1128         MDeformWeight *dw;
1129         // make sure they are all at most 1 after the change
1130         for(i = 0; i < defcnt; i++) {
1131                 if(selection[i]) {
1132                         dw = defvert_find_index(dvert, i);
1133                         if(dw && dw->weight) {
1134                                 if(dw->weight * change > 1) {
1135                                         change = 1.0f/dw->weight;
1136                                 }
1137                         }
1138                 }
1139         }
1140         for(i = 0; i < defcnt; i++) {
1141                 if(selection[i]) {
1142                         dw = defvert_find_index(dvert, i);
1143                         if(dw && dw->weight) {
1144                                 dw->weight = dw->weight * change;
1145                         }
1146                 }
1147         }
1148 }
1149 /*Jason*/
1150 static float redistribute_change(MDeformVert *ndv, char *change_status, int changeme, int changeto, char *validmap, float totchange, float total_valid) {
1151         float was_change;
1152         float change;
1153         float oldval;
1154         MDeformWeight *ndw;
1155         int i;
1156         do {
1157                 was_change = FALSE;
1158                 change = totchange/total_valid;
1159                 for(i = 0; i < ndv->totweight && total_valid && totchange; i++) {
1160                         ndw = (ndv->dw+i);
1161                         if(change_status[ndw->def_nr] == changeme) {
1162                                 oldval = ndw->weight;
1163                                 if(!validmap && ndw->weight + change > 1) {
1164                                         totchange -= 1-ndw->weight;
1165                                         ndw->weight = 1;
1166                                         change_status[ndw->def_nr] = changeto;
1167                                         total_valid--;
1168                                 } else if(ndw->weight + change < 0) {
1169                                         totchange -= ndw->weight;
1170                                         ndw->weight = 0;
1171                                         change_status[ndw->def_nr] = changeto;
1172                                         total_valid--;
1173                                 } else {
1174                                         totchange -= change;
1175                                         ndw->weight += change;
1176                                 }
1177                                 if(oldval != ndw->weight) {
1178                                         was_change = TRUE;
1179                                 }
1180                         }
1181                 }
1182         }while(was_change && total_valid && totchange);
1183         return totchange;
1184 }
1185 /*Jason*/
1186 static void enforce_locks(MDeformVert *odv, MDeformVert *ndv, int defcnt, char *flags, char *bone_groups, char *validmap) {
1187         float totchange = 0.0f;
1188         float totchange_allowed = 0.0f;
1189         float left_over;
1190         float change;
1191         int total_valid = 0;
1192         int total_changed = 0;
1193         int i;
1194         MDeformWeight *ndw;
1195         MDeformWeight *odw;
1196         MDeformWeight *ndw2;
1197         MDeformWeight *odw2;
1198         int designatedw = -1;
1199         int designatedw_changed = FALSE;
1200         float storedw;
1201         char *change_status;
1202         char new_weight_has_zero = FALSE;
1203
1204         if(!flags || !has_locked_group(ndv, flags)) {
1205                 return;
1206         }
1207
1208         change_status = MEM_callocN(sizeof(char)*defcnt, "unlocked_unchanged");
1209
1210         for(i = 0; i < defcnt; i++) {
1211                 ndw = defvert_find_index(ndv, i);
1212                 odw = defvert_find_index(odv, i);
1213                 if(!ndw || !odw) {
1214                         if (!flags[i] && bone_groups[i]){
1215                                 defvert_verify_index(odv, i);
1216                                 defvert_verify_index(ndv, i);
1217                                 total_valid++;
1218                                 change_status[i] = 1; // can be altered while redistributing
1219                         }
1220                         continue;
1221                 }
1222                 if(flags[i]) {
1223                         ndw->weight = odw->weight;
1224                 } else if(ndw->weight != odw->weight) {
1225                         totchange += ndw->weight-odw->weight;
1226                         change_status[i] = 2; // was altered already
1227                         total_changed++;
1228                         if(ndw->weight == 0) {
1229                                 new_weight_has_zero = TRUE;
1230                         } else if(!designatedw){
1231                                 designatedw = i;
1232                         }
1233                 } else if (bone_groups[i]){
1234                         totchange_allowed += ndw->weight;
1235                         total_valid++;
1236                         change_status[i] = 1; // can be altered while redistributing
1237                 }
1238         }
1239         if(total_changed) {
1240                 if(totchange_allowed) {
1241                         if(totchange < 0) {
1242                                 totchange_allowed = total_valid - totchange_allowed;
1243                         } else {
1244                                 totchange_allowed *= -1;
1245                         }
1246                         left_over = 0;
1247                         if(fabs(totchange_allowed) < fabs(totchange)) {
1248                                 left_over = fabs(fabs(totchange)-fabs(totchange_allowed));
1249                                 if(totchange > 0) {
1250                                         left_over *= -1;
1251                                 }
1252                         }else {
1253                                 totchange_allowed = -totchange;
1254                         }
1255                         // move the weight evenly between the allowed groups, move excess back onto the used groups based on the change
1256                         totchange_allowed = redistribute_change(ndv, change_status, 1, -1, validmap, totchange_allowed, total_valid);
1257                         left_over += totchange_allowed;
1258                         if(left_over) {
1259                                 // more than one nonzero weights were changed with the same ratio, so keep them changed that way!
1260                                 if(total_changed > 1 && !new_weight_has_zero) {
1261                                         ndw = defvert_find_index(ndv, designatedw);
1262                                         odw = defvert_find_index(odv, designatedw);
1263                                         storedw = ndw->weight;
1264                                         for(i = 0; i < ndv->totweight; i++) {
1265                                                 if(change_status[ndw->def_nr] == 2) {
1266                                                         odw2 = (odv->dw+i);
1267                                                         ndw2 = (ndv->dw+i);
1268                                                         if(!designatedw_changed) {
1269                                                                 ndw->weight = (totchange_allowed + odw->weight + odw2->weight)/(1 + ndw2->weight/ndw->weight);
1270                                                                 designatedw_changed = TRUE;
1271                                                         }
1272                                                         ndw2->weight = ndw->weight*ndw2->weight/storedw;
1273                                                 }
1274                                         }
1275                                 }
1276                                 // a weight was changed to zero, or only one weight was changed
1277                                 // put weight back as evenly as possible
1278                                 else {
1279                                         redistribute_change(ndv, change_status, 2, -2, validmap, left_over, total_changed);
1280                                 }
1281                         }
1282                 } else {
1283                         // reset the weights
1284                         for(i = 0; i < ndv->totweight; i++) {
1285                                 (ndv->dw+i)->weight = (odv->dw+i)->weight;
1286                         }
1287                 }
1288         }
1289
1290         MEM_freeN(change_status);
1291 }
1292 /*Jason*/
1293 static float get_mp_change(MDeformVert *odv, char *selection, float oldw, float neww) {
1294         int i;
1295
1296         if(oldw) {
1297                 return neww/oldw;
1298         }
1299
1300         for(i = 0; i < odv->totweight; i++) {
1301                 if(selection[(odv->dw+i)->def_nr]) {
1302                         if((odv->dw+i)->weight) {
1303                                 return ((odv->dw+i)->weight+neww) / (odv->dw+i)->weight;
1304                         }
1305                 }
1306         }
1307         return 0;
1308 }
1309 /*Jason*/
1310 /* fresh start to make multi-paint and locking modular */
1311 static void apply_mp_lcks_normalize(Object *ob, Mesh *me, int index, MDeformWeight *dw, int defcnt, float oldw, char *selection, int selected, char *bone_groups, char *validmap, char *flags, int multipaint) {
1312         MDeformVert *dvert = me->dvert+index;
1313         MDeformVert *dv = MEM_mallocN(sizeof (*(me->dvert+index)), "oldMDeformVert");
1314         float neww = dw->weight;
1315         float change = 0.0f;
1316         int i;
1317         dw->weight = oldw;
1318
1319         //defvert_copy(dv, dvert);
1320         dv->dw= MEM_dupallocN(dvert->dw);
1321         dv->flag = dvert->flag;
1322         dv->totweight = dvert->totweight;
1323
1324         if(!flags || flags && !has_locked_group_selected(defcnt, selection, flags) && !flags[dw->def_nr]) {// !flags[dw->def_nr] helps if nothing is selected, but active group is locked
1325                 if(multipaint && selected > 1 && (change = get_mp_change(dv, selection, oldw, neww)) && change!=1) {
1326                         multipaint_selection(dvert, change, selection, defcnt);
1327                 } else {
1328                         dw->weight = neww;
1329                         change = 0.0f;
1330                 }
1331         }
1332         enforce_locks(dv, dvert, defcnt, flags, bone_groups, validmap);
1333
1334         do_weight_paint_auto_normalize_all_groups(dvert, validmap);
1335         
1336         MEM_freeN(dv->dw);
1337         MEM_freeN(dv);
1338 }
1339
1340 /* Jason was here duplicate function I used in DerivedMesh.c*/
1341 static char* get_selected_defgroups(Object *ob, int defcnt) {
1342         bPoseChannel *chan;
1343         bPose *pose;
1344         bDeformGroup *defgroup;
1345         //Bone *bone;
1346         char *dg_flags = MEM_callocN(defcnt*sizeof(char), "dg_selected_flags");
1347         int i;
1348         Object *armob = ED_object_pose_armature(ob);
1349
1350         if(armob) {
1351                 pose = armob->pose;
1352                 for (chan=pose->chanbase.first; chan; chan=chan->next) {
1353                         for (i = 0, defgroup = ob->defbase.first; i < defcnt && defgroup; defgroup = defgroup->next, i++) {
1354                                 if(!strcmp(defgroup->name, chan->bone->name)) {
1355                                         dg_flags[i] = (chan->bone->flag & BONE_SELECTED);
1356                                 }
1357                         }
1358                 }
1359         }
1360         
1361         return dg_flags;
1362 }
1363 /* TODO move duplicates to header */
1364 /* Jason was here duplicate function */
1365 static int count_true(char *list, int len)
1366 {
1367         int i;
1368         int cnt = 0;
1369         for(i = 0; i < len; i++) {
1370                 if (list[i]) {
1371                         cnt++;
1372                 }
1373         }
1374         return cnt;
1375 }
1376 // Jason
1377 static char *wpaint_make_validmap(Object *ob);
1378
1379 static void do_weight_paint_vertex(VPaint *wp, Object *ob, int index, 
1380                                    float alpha, float paintweight, int flip, 
1381                                    int vgroup_mirror, char *validmap, int multipaint)
1382 {
1383         Mesh *me= ob->data;
1384         MDeformWeight *dw, *uw;
1385         int vgroup= ob->actdef-1;
1386
1387         /* Jason was here */
1388         char *flags;
1389         char *bone_groups;
1390         char *selection;
1391         int selected;
1392         float oldw;
1393         int defcnt;
1394         if(validmap) {
1395                 bone_groups = validmap;
1396         }else {
1397                 bone_groups = wpaint_make_validmap(ob);
1398         }
1399
1400         if(wp->flag & VP_ONLYVGROUP) {
1401                 dw= defvert_find_index(me->dvert+index, vgroup);
1402                 uw= defvert_find_index(wp->wpaint_prev+index, vgroup);
1403         }
1404         else {
1405                 dw= defvert_verify_index(me->dvert+index, vgroup);
1406                 uw= defvert_verify_index(wp->wpaint_prev+index, vgroup);
1407         }
1408         if(dw==NULL || uw==NULL)
1409                 return;
1410         /* Jason was here */
1411         flags = gen_lck_flags(ob, defcnt = BLI_countlist(&ob->defbase), bone_groups);
1412         selection = get_selected_defgroups(ob, defcnt);
1413         selected = count_true(selection, defcnt);
1414         if(!selected && ob->actdef) {
1415                 selected = 1;
1416         }
1417         oldw = dw->weight;
1418         wpaint_blend(wp, dw, uw, alpha, paintweight, flip);
1419         /* Jason was here */
1420         apply_mp_lcks_normalize(ob, me, index, dw, defcnt, oldw, selection, selected, bone_groups, validmap, flags, multipaint);
1421         //check_locks_and_normalize(ob, me, index, vgroup, dw, oldw, validmap, flags, defcnt, bone_groups, selection, selected, multipaint);
1422         // dvert may have been altered greatly
1423         dw = defvert_find_index(me->dvert+index, vgroup);
1424
1425         if(me->editflag & ME_EDIT_MIRROR_X) {   /* x mirror painting */
1426                 int j= mesh_get_x_mirror_vert(ob, index);
1427                 if(j>=0) {
1428                         /* copy, not paint again */
1429                         if(vgroup_mirror != -1)
1430                                 uw= defvert_verify_index(me->dvert+j, vgroup_mirror);
1431                         else
1432                                 uw= defvert_verify_index(me->dvert+j, vgroup);
1433                         /* Jason */
1434                         oldw = uw->weight;
1435
1436                         uw->weight= dw->weight;
1437                         /* Jason */
1438                         apply_mp_lcks_normalize(ob, me, j, uw, defcnt, oldw, selection, selected, bone_groups, validmap, flags, multipaint);
1439                         //check_locks_and_normalize(ob, me, j, vgroup, uw, oldw, validmap, flags, defcnt, bone_groups, selection, selected, multipaint);
1440                 }
1441         }
1442         /* Jason */
1443         if(flags) {
1444                 MEM_freeN(flags);
1445         }
1446         if(selection) {
1447                 MEM_freeN(selection);
1448         }
1449         if(!validmap) {
1450                 MEM_freeN(bone_groups);
1451         }
1452 }
1453
1454 /* *************** set wpaint operator ****************** */
1455
1456 static int set_wpaint(bContext *C, wmOperator *UNUSED(op))              /* toggle */
1457 {               
1458         Object *ob= CTX_data_active_object(C);
1459         Scene *scene= CTX_data_scene(C);
1460         VPaint *wp= scene->toolsettings->wpaint;
1461         Mesh *me;
1462         
1463         me= get_mesh(ob);
1464         if(ob->id.lib || me==NULL) return OPERATOR_PASS_THROUGH;
1465         
1466         if(ob->mode & OB_MODE_WEIGHT_PAINT) ob->mode &= ~OB_MODE_WEIGHT_PAINT;
1467         else ob->mode |= OB_MODE_WEIGHT_PAINT;
1468         
1469         
1470         /* Weightpaint works by overriding colors in mesh,
1471                 * so need to make sure we recalc on enter and
1472                 * exit (exit needs doing regardless because we
1473                                 * should redeform).
1474                 */
1475         DAG_id_tag_update(&me->id, 0);
1476         
1477         if(ob->mode & OB_MODE_WEIGHT_PAINT) {
1478                 Object *par;
1479                 
1480                 if(wp==NULL)
1481                         wp= scene->toolsettings->wpaint= new_vpaint(1);
1482
1483                 paint_init(&wp->paint, PAINT_CURSOR_WEIGHT_PAINT);
1484                 paint_cursor_start(C, weight_paint_poll);
1485                 
1486                 mesh_octree_table(ob, NULL, NULL, 's');
1487                 
1488                 /* verify if active weight group is also active bone */
1489                 par= modifiers_isDeformedByArmature(ob);
1490                 if(par && (par->mode & OB_MODE_POSE)) {
1491                         bArmature *arm= par->data;
1492
1493                         if(arm->act_bone)
1494                                 ED_vgroup_select_by_name(ob, arm->act_bone->name);
1495                 }
1496         }
1497         else {
1498                 mesh_octree_table(NULL, NULL, NULL, 'e');
1499                 mesh_mirrtopo_table(NULL, 'e');
1500         }
1501         
1502         WM_event_add_notifier(C, NC_SCENE|ND_MODE, scene);
1503         
1504         return OPERATOR_FINISHED;
1505 }
1506
1507 /* for switching to/from mode */
1508 static int paint_poll_test(bContext *C)
1509 {
1510         if(CTX_data_edit_object(C))
1511                 return 0;
1512         if(CTX_data_active_object(C)==NULL)
1513                 return 0;
1514         return 1;
1515 }
1516
1517 void PAINT_OT_weight_paint_toggle(wmOperatorType *ot)
1518 {
1519         
1520         /* identifiers */
1521         ot->name= "Weight Paint Mode";
1522         ot->idname= "PAINT_OT_weight_paint_toggle";
1523         
1524         /* api callbacks */
1525         ot->exec= set_wpaint;
1526         ot->poll= paint_poll_test;
1527         
1528         /* flags */
1529         ot->flag= OPTYPE_REGISTER|OPTYPE_UNDO;
1530         
1531 }
1532
1533 /* ************ weight paint operator ********** */
1534
1535 struct WPaintData {
1536         ViewContext vc;
1537         int *indexar;
1538         int vgroup_mirror;
1539         float *vertexcosnos;
1540         float wpimat[3][3];
1541         
1542         /*variables for auto normalize*/
1543         int auto_normalize;
1544         char *vgroup_validmap; /*stores if vgroups tie to deforming bones or not*/
1545 };
1546
1547 static char *wpaint_make_validmap(Object *ob)
1548 {
1549         bDeformGroup *dg;
1550         ModifierData *md;
1551         char *validmap;
1552         bPose *pose;
1553         bPoseChannel *chan;
1554         ArmatureModifierData *amd;
1555         GHash *gh = BLI_ghash_new(BLI_ghashutil_strhash, BLI_ghashutil_strcmp, "wpaint_make_validmap gh");
1556         int i = 0, step1=1;
1557
1558         /*add all names to a hash table*/
1559         for (dg=ob->defbase.first, i=0; dg; dg=dg->next, i++) {
1560                 BLI_ghash_insert(gh, dg->name, NULL);
1561         }
1562
1563         if (!i)
1564                 return NULL;
1565
1566         validmap = MEM_callocN(i, "wpaint valid map");
1567
1568         /*now loop through the armature modifiers and identify deform bones*/
1569         for (md = ob->modifiers.first; md; md= !md->next && step1 ? (step1=0), modifiers_getVirtualModifierList(ob) : md->next) {
1570                 if (!(md->mode & (eModifierMode_Realtime|eModifierMode_Virtual)))
1571                         continue;
1572
1573                 if (md->type == eModifierType_Armature) 
1574                 {
1575                         amd = (ArmatureModifierData*) md;
1576
1577                         if(amd->object && amd->object->pose) {
1578                                 pose = amd->object->pose;
1579                                 
1580                                 for (chan=pose->chanbase.first; chan; chan=chan->next) {
1581                                         if (chan->bone->flag & BONE_NO_DEFORM)
1582                                                 continue;
1583
1584                                         if (BLI_ghash_haskey(gh, chan->name)) {
1585                                                 BLI_ghash_remove(gh, chan->name, NULL, NULL);
1586                                                 BLI_ghash_insert(gh, chan->name, SET_INT_IN_POINTER(1));
1587                                         }
1588                                 }
1589                         }
1590                 }
1591         }
1592         
1593         /*add all names to a hash table*/
1594         for (dg=ob->defbase.first, i=0; dg; dg=dg->next, i++) {
1595                 if (BLI_ghash_lookup(gh, dg->name) != NULL) {
1596                         validmap[i] = 1;
1597                 }
1598         }
1599
1600         BLI_ghash_free(gh, NULL, NULL);
1601
1602         return validmap;
1603 }
1604
1605 static int wpaint_stroke_test_start(bContext *C, wmOperator *op, wmEvent *UNUSED(event))
1606 {
1607         Scene *scene= CTX_data_scene(C);
1608         struct PaintStroke *stroke = op->customdata;
1609         ToolSettings *ts= CTX_data_tool_settings(C);
1610         VPaint *wp= ts->wpaint;
1611         Object *ob= CTX_data_active_object(C);
1612         struct WPaintData *wpd;
1613         Mesh *me;
1614         float mat[4][4], imat[4][4];
1615
1616         if(scene->obedit) return OPERATOR_CANCELLED;
1617         
1618         me= get_mesh(ob);
1619         if(me==NULL || me->totface==0) return OPERATOR_PASS_THROUGH;
1620         
1621         /* if nothing was added yet, we make dverts and a vertex deform group */
1622         if (!me->dvert) {
1623                 ED_vgroup_data_create(&me->id);
1624                 WM_event_add_notifier(C, NC_GEOM|ND_DATA, me);
1625         }
1626
1627
1628         /* make mode data storage */
1629         wpd= MEM_callocN(sizeof(struct WPaintData), "WPaintData");
1630         paint_stroke_set_mode_data(stroke, wpd);
1631         view3d_set_viewcontext(C, &wpd->vc);
1632         wpd->vgroup_mirror= -1;
1633
1634         /*set up auto-normalize, and generate map for detecting which
1635           vgroups affect deform bones*/
1636         wpd->auto_normalize = ts->auto_normalize;
1637         if (wpd->auto_normalize)
1638                 wpd->vgroup_validmap = wpaint_make_validmap(ob);
1639         
1640         //      if(qual & LR_CTRLKEY) {
1641         //              sample_wpaint(scene, ar, v3d, 0);
1642         //              return;
1643         //      }
1644         //      if(qual & LR_SHIFTKEY) {
1645         //              sample_wpaint(scene, ar, v3d, 1);
1646         //              return;
1647         //      }
1648         
1649         /* ALLOCATIONS! no return after this line */
1650         /* painting on subsurfs should give correct points too, this returns me->totvert amount */
1651         wpd->vertexcosnos= mesh_get_mapped_verts_nors(scene, ob);
1652         wpd->indexar= get_indexarray(me);
1653         copy_wpaint_prev(wp, me->dvert, me->totvert);
1654         
1655         /* this happens on a Bone select, when no vgroup existed yet */
1656         if(ob->actdef<=0) {
1657                 Object *modob;
1658                 if((modob = modifiers_isDeformedByArmature(ob))) {
1659                         Bone *actbone= ((bArmature *)modob->data)->act_bone;
1660                         if(actbone) {
1661                                 bPoseChannel *pchan= get_pose_channel(modob->pose, actbone->name);
1662
1663                                 if(pchan) {
1664                                         bDeformGroup *dg= defgroup_find_name(ob, pchan->name);
1665                                         if(dg==NULL)
1666                                                 dg= ED_vgroup_add_name(ob, pchan->name);        /* sets actdef */
1667                                         else
1668                                                 ob->actdef= 1 + defgroup_find_index(ob, dg);
1669                                 }
1670                         }
1671                 }
1672         }
1673         if(ob->defbase.first==NULL) {
1674                 ED_vgroup_add(ob);
1675         }
1676         
1677         //      if(ob->lay & v3d->lay); else error("Active object is not in this layer");
1678         
1679         /* imat for normals */
1680         mul_m4_m4m4(mat, ob->obmat, wpd->vc.rv3d->viewmat);
1681         invert_m4_m4(imat, mat);
1682         copy_m3_m4(wpd->wpimat, imat);
1683         
1684         /* if mirror painting, find the other group */
1685         if(me->editflag & ME_EDIT_MIRROR_X) {
1686                 bDeformGroup *defgroup= BLI_findlink(&ob->defbase, ob->actdef-1);
1687                 if(defgroup) {
1688                         bDeformGroup *curdef;
1689                         int actdef= 0;
1690                         char name[32];
1691
1692                         flip_side_name(name, defgroup->name, FALSE);
1693
1694                         for (curdef = ob->defbase.first; curdef; curdef=curdef->next, actdef++)
1695                                 if (!strcmp(curdef->name, name))
1696                                         break;
1697                         if(curdef==NULL) {
1698                                 int olddef= ob->actdef; /* tsk, ED_vgroup_add sets the active defgroup */
1699                                 curdef= ED_vgroup_add_name (ob, name);
1700                                 ob->actdef= olddef;
1701                         }
1702                         
1703                         if(curdef && curdef!=defgroup)
1704                                 wpd->vgroup_mirror= actdef;
1705                 }
1706         }
1707
1708         return 1;
1709 }
1710
1711 static void wpaint_stroke_update_step(bContext *C, struct PaintStroke *stroke, PointerRNA *itemptr)
1712 {
1713         ToolSettings *ts= CTX_data_tool_settings(C);
1714         VPaint *wp= ts->wpaint;
1715         Brush *brush = paint_brush(&wp->paint);
1716         struct WPaintData *wpd= paint_stroke_mode_data(stroke);
1717         ViewContext *vc;
1718         Object *ob;
1719         Mesh *me;
1720         float mat[4][4];
1721         float paintweight;
1722         int *indexar;
1723         int totindex, index, totw, flip;
1724         float alpha;
1725         float mval[2], pressure;
1726         
1727         /* cannot paint if there is no stroke data */
1728         if (wpd == NULL) {
1729                 // XXX: force a redraw here, since even though we can't paint, 
1730                 // at least view won't freeze until stroke ends
1731                 ED_region_tag_redraw(CTX_wm_region(C));
1732                 return;
1733         }
1734                 
1735         vc= &wpd->vc;
1736         ob= vc->obact;
1737         me= ob->data;
1738         indexar= wpd->indexar;
1739         
1740         view3d_operator_needs_opengl(C);
1741                 
1742         /* load projection matrix */
1743         mul_m4_m4m4(mat, ob->obmat, vc->rv3d->persmat);
1744
1745         flip = RNA_boolean_get(itemptr, "pen_flip");
1746         pressure = RNA_float_get(itemptr, "pressure");
1747         RNA_float_get_array(itemptr, "mouse", mval);
1748         mval[0]-= vc->ar->winrct.xmin;
1749         mval[1]-= vc->ar->winrct.ymin;
1750                         
1751         swap_m4m4(wpd->vc.rv3d->persmat, mat);
1752                         
1753         /* which faces are involved */
1754         if(wp->flag & VP_AREA) {
1755                 totindex= sample_backbuf_area(vc, indexar, me->totface, mval[0], mval[1], brush_size(brush));
1756         }
1757         else {
1758                 indexar[0]= view3d_sample_backbuf(vc, mval[0], mval[1]);
1759                 if(indexar[0]) totindex= 1;
1760                 else totindex= 0;
1761         }
1762                         
1763         if(wp->flag & VP_COLINDEX) {
1764                 for(index=0; index<totindex; index++) {
1765                         if(indexar[index] && indexar[index]<=me->totface) {
1766                                 MFace *mface= ((MFace *)me->mface) + (indexar[index]-1);
1767                                                 
1768                                 if(mface->mat_nr!=ob->actcol-1) {
1769                                         indexar[index]= 0;
1770                                 }
1771                         }
1772                 }
1773         }
1774                         
1775         if((me->editflag & ME_EDIT_PAINT_MASK) && me->mface) {
1776                 for(index=0; index<totindex; index++) {
1777                         if(indexar[index] && indexar[index]<=me->totface) {
1778                                 MFace *mface= ((MFace *)me->mface) + (indexar[index]-1);
1779                                                 
1780                                 if((mface->flag & ME_FACE_SEL)==0) {
1781                                         indexar[index]= 0;
1782                                 }
1783                         }                                       
1784                 }
1785         }
1786                         
1787         /* make sure each vertex gets treated only once */
1788         /* and calculate filter weight */
1789         totw= 0;
1790         if(brush->vertexpaint_tool==VP_BLUR) 
1791                 paintweight= 0.0f;
1792         else
1793                 paintweight= ts->vgroup_weight;
1794                         
1795         for(index=0; index<totindex; index++) {
1796                 if(indexar[index] && indexar[index]<=me->totface) {
1797                         MFace *mface= me->mface + (indexar[index]-1);
1798                                         
1799                         (me->dvert+mface->v1)->flag= 1;
1800                         (me->dvert+mface->v2)->flag= 1;
1801                         (me->dvert+mface->v3)->flag= 1;
1802                         if(mface->v4) (me->dvert+mface->v4)->flag= 1;
1803                                         
1804                         if(brush->vertexpaint_tool==VP_BLUR) {
1805                                 MDeformWeight *dw, *(*dw_func)(MDeformVert *, const int);
1806                                                 
1807                                 if(wp->flag & VP_ONLYVGROUP)
1808                                         dw_func= (MDeformWeight *(*)(MDeformVert *, const int))defvert_find_index;
1809                                 else
1810                                         dw_func= defvert_verify_index;
1811                                                 
1812                                 dw= dw_func(me->dvert+mface->v1, ob->actdef-1);
1813                                 if(dw) {paintweight+= dw->weight; totw++;}
1814                                 dw= dw_func(me->dvert+mface->v2, ob->actdef-1);
1815                                 if(dw) {paintweight+= dw->weight; totw++;}
1816                                 dw= dw_func(me->dvert+mface->v3, ob->actdef-1);
1817                                 if(dw) {paintweight+= dw->weight; totw++;}
1818                                 if(mface->v4) {
1819                                         dw= dw_func(me->dvert+mface->v4, ob->actdef-1);
1820                                         if(dw) {paintweight+= dw->weight; totw++;}
1821                                 }
1822                         }
1823                 }
1824         }
1825                         
1826         if(brush->vertexpaint_tool==VP_BLUR) 
1827                 paintweight/= (float)totw;
1828                         
1829         for(index=0; index<totindex; index++) {
1830                                 
1831                 if(indexar[index] && indexar[index]<=me->totface) {
1832                         MFace *mface= me->mface + (indexar[index]-1);
1833                                         
1834                         if((me->dvert+mface->v1)->flag) {
1835                                 alpha= calc_vp_alpha_dl(wp, vc, wpd->wpimat, wpd->vertexcosnos+6*mface->v1, mval, pressure);
1836                                 if(alpha) {
1837                                         do_weight_paint_vertex(wp, ob, mface->v1, 
1838                                                 alpha, paintweight, flip, wpd->vgroup_mirror, 
1839                                                 wpd->vgroup_validmap, ts->multipaint);
1840                                 }
1841                                 (me->dvert+mface->v1)->flag= 0;
1842                         }
1843                                         
1844                         if((me->dvert+mface->v2)->flag) {
1845                                 alpha= calc_vp_alpha_dl(wp, vc, wpd->wpimat, wpd->vertexcosnos+6*mface->v2, mval, pressure);
1846                                 if(alpha) {
1847                                         do_weight_paint_vertex(wp, ob, mface->v2, 
1848                                                 alpha, paintweight, flip, wpd->vgroup_mirror, 
1849                                                 wpd->vgroup_validmap, ts->multipaint);
1850                                 }
1851                                 (me->dvert+mface->v2)->flag= 0;
1852                         }
1853                                         
1854                         if((me->dvert+mface->v3)->flag) {
1855                                 alpha= calc_vp_alpha_dl(wp, vc, wpd->wpimat, wpd->vertexcosnos+6*mface->v3, mval, pressure);
1856                                 if(alpha) {
1857                                         do_weight_paint_vertex(wp, ob, mface->v3, 
1858                                                 alpha, paintweight, flip, wpd->vgroup_mirror, 
1859                                                 wpd->vgroup_validmap, ts->multipaint);
1860                                 }
1861                                 (me->dvert+mface->v3)->flag= 0;
1862                         }
1863                                         
1864                         if((me->dvert+mface->v4)->flag) {
1865                                 if(mface->v4) {
1866                                         alpha= calc_vp_alpha_dl(wp, vc, wpd->wpimat, wpd->vertexcosnos+6*mface->v4, mval, pressure);
1867                                         if(alpha) {
1868                                                 do_weight_paint_vertex(wp, ob, mface->v4, 
1869                                                         alpha, paintweight, flip, wpd->vgroup_mirror,
1870                                                         wpd->vgroup_validmap, ts->multipaint);
1871                                         }
1872                                         (me->dvert+mface->v4)->flag= 0;
1873                                 }
1874                         }
1875                 }
1876         }
1877                         
1878         swap_m4m4(vc->rv3d->persmat, mat);
1879                         
1880         DAG_id_tag_update(ob->data, 0);
1881         ED_region_tag_redraw(vc->ar);
1882 }
1883
1884 static void wpaint_stroke_done(bContext *C, struct PaintStroke *stroke)
1885 {
1886         ToolSettings *ts= CTX_data_tool_settings(C);
1887         Object *ob= CTX_data_active_object(C);
1888         struct WPaintData *wpd= paint_stroke_mode_data(stroke);
1889         
1890         if(wpd) {
1891                 if(wpd->vertexcosnos)
1892                         MEM_freeN(wpd->vertexcosnos);
1893                 MEM_freeN(wpd->indexar);
1894                 
1895                 if (wpd->vgroup_validmap)
1896                         MEM_freeN(wpd->vgroup_validmap);
1897                 
1898                 MEM_freeN(wpd);
1899         }
1900         
1901         /* frees prev buffer */
1902         copy_wpaint_prev(ts->wpaint, NULL, 0);
1903         
1904         /* and particles too */
1905         if(ob->particlesystem.first) {
1906                 ParticleSystem *psys;
1907                 int i;
1908                 
1909                 for(psys= ob->particlesystem.first; psys; psys= psys->next) {
1910                         for(i=0; i<PSYS_TOT_VG; i++) {
1911                                 if(psys->vgroup[i]==ob->actdef) {
1912                                         psys->recalc |= PSYS_RECALC_RESET;
1913                                         break;
1914                                 }
1915                         }
1916                 }
1917         }
1918         
1919         DAG_id_tag_update(ob->data, 0);
1920 }
1921
1922
1923 static int wpaint_invoke(bContext *C, wmOperator *op, wmEvent *event)
1924 {
1925         
1926         op->customdata = paint_stroke_new(C, NULL, wpaint_stroke_test_start,
1927                                           wpaint_stroke_update_step,
1928                                           wpaint_stroke_done, event->type);
1929         
1930         /* add modal handler */
1931         WM_event_add_modal_handler(C, op);
1932
1933         op->type->modal(C, op, event);
1934         
1935         return OPERATOR_RUNNING_MODAL;
1936 }
1937
1938 void PAINT_OT_weight_paint(wmOperatorType *ot)
1939 {
1940         
1941         /* identifiers */
1942         ot->name= "Weight Paint";
1943         ot->idname= "PAINT_OT_weight_paint";
1944         
1945         /* api callbacks */
1946         ot->invoke= wpaint_invoke;
1947         ot->modal= paint_stroke_modal;
1948         /* ot->exec= vpaint_exec; <-- needs stroke property */
1949         ot->poll= weight_paint_poll;
1950         
1951         /* flags */
1952         ot->flag= OPTYPE_REGISTER|OPTYPE_UNDO|OPTYPE_BLOCKING;
1953
1954         RNA_def_collection_runtime(ot->srna, "stroke", &RNA_OperatorStrokeElement, "Stroke", "");
1955 }
1956
1957 static int weight_paint_set_exec(bContext *C, wmOperator *UNUSED(op))
1958 {
1959         struct Scene *scene= CTX_data_scene(C);
1960         Object *obact = CTX_data_active_object(C);
1961
1962         wpaint_fill(scene->toolsettings->wpaint, obact, scene->toolsettings->vgroup_weight);
1963         ED_region_tag_redraw(CTX_wm_region(C)); // XXX - should redraw all 3D views
1964         return OPERATOR_FINISHED;
1965 }
1966
1967 void PAINT_OT_weight_set(wmOperatorType *ot)
1968 {
1969         /* identifiers */
1970         ot->name= "Set Weight";
1971         ot->idname= "PAINT_OT_weight_set";
1972
1973         /* api callbacks */
1974         ot->exec= weight_paint_set_exec;
1975         ot->poll= facemask_paint_poll;
1976
1977         /* flags */
1978         ot->flag= OPTYPE_REGISTER|OPTYPE_UNDO;
1979 }
1980
1981 /* ************ set / clear vertex paint mode ********** */
1982
1983
1984 static int set_vpaint(bContext *C, wmOperator *op)              /* toggle */
1985 {       
1986         Object *ob= CTX_data_active_object(C);
1987         Scene *scene= CTX_data_scene(C);
1988         VPaint *vp= scene->toolsettings->vpaint;
1989         Mesh *me;
1990         
1991         me= get_mesh(ob);
1992         
1993         if(me==NULL || object_data_is_libdata(ob)) {
1994                 ob->mode &= ~OB_MODE_VERTEX_PAINT;
1995                 return OPERATOR_PASS_THROUGH;
1996         }
1997         
1998         if(me && me->mcol==NULL) make_vertexcol(ob);
1999         
2000         /* toggle: end vpaint */
2001         if(ob->mode & OB_MODE_VERTEX_PAINT) {
2002                 
2003                 ob->mode &= ~OB_MODE_VERTEX_PAINT;
2004         }
2005         else {
2006                 ob->mode |= OB_MODE_VERTEX_PAINT;
2007                 /* Turn off weight painting */
2008                 if (ob->mode & OB_MODE_WEIGHT_PAINT)
2009                         set_wpaint(C, op);
2010                 
2011                 if(vp==NULL)
2012                         vp= scene->toolsettings->vpaint= new_vpaint(0);
2013                 
2014                 paint_cursor_start(C, vertex_paint_poll);
2015
2016                 paint_init(&vp->paint, PAINT_CURSOR_VERTEX_PAINT);
2017         }
2018         
2019         if (me)
2020                 /* update modifier stack for mapping requirements */
2021                 DAG_id_tag_update(&me->id, 0);
2022         
2023         WM_event_add_notifier(C, NC_SCENE|ND_MODE, scene);
2024         
2025         return OPERATOR_FINISHED;
2026 }
2027
2028 void PAINT_OT_vertex_paint_toggle(wmOperatorType *ot)
2029 {
2030         
2031         /* identifiers */
2032         ot->name= "Vertex Paint Mode";
2033         ot->idname= "PAINT_OT_vertex_paint_toggle";
2034         
2035         /* api callbacks */
2036         ot->exec= set_vpaint;
2037         ot->poll= paint_poll_test;
2038         
2039         /* flags */
2040         ot->flag= OPTYPE_REGISTER|OPTYPE_UNDO;
2041 }
2042
2043
2044
2045 /* ********************** vertex paint operator ******************* */
2046
2047 /* Implementation notes:
2048
2049 Operator->invoke()
2050   - validate context (add mcol)
2051   - create customdata storage
2052   - call paint once (mouse click)
2053   - add modal handler 
2054
2055 Operator->modal()
2056   - for every mousemove, apply vertex paint
2057   - exit on mouse release, free customdata
2058         (return OPERATOR_FINISHED also removes handler and operator)
2059
2060 For future:
2061   - implement a stroke event (or mousemove with past positons)
2062   - revise whether op->customdata should be added in object, in set_vpaint
2063
2064 */
2065
2066 typedef struct VPaintData {
2067         ViewContext vc;
2068         unsigned int paintcol;
2069         int *indexar;
2070         float *vertexcosnos;
2071         float vpimat[3][3];
2072 } VPaintData;
2073
2074 static int vpaint_stroke_test_start(bContext *C, struct wmOperator *op, wmEvent *UNUSED(event))
2075 {
2076         ToolSettings *ts= CTX_data_tool_settings(C);
2077         struct PaintStroke *stroke = op->customdata;
2078         VPaint *vp= ts->vpaint;
2079         struct VPaintData *vpd;
2080         Object *ob= CTX_data_active_object(C);
2081         Mesh *me;
2082         float mat[4][4], imat[4][4];
2083
2084         /* context checks could be a poll() */
2085         me= get_mesh(ob);
2086         if(me==NULL || me->totface==0) return OPERATOR_PASS_THROUGH;
2087         
2088         if(me->mcol==NULL) make_vertexcol(ob);
2089         if(me->mcol==NULL) return OPERATOR_CANCELLED;
2090         
2091         /* make mode data storage */
2092         vpd= MEM_callocN(sizeof(struct VPaintData), "VPaintData");
2093         paint_stroke_set_mode_data(stroke, vpd);
2094         view3d_set_viewcontext(C, &vpd->vc);
2095         
2096         vpd->vertexcosnos= mesh_get_mapped_verts_nors(vpd->vc.scene, ob);
2097         vpd->indexar= get_indexarray(me);
2098         vpd->paintcol= vpaint_get_current_col(vp);
2099         
2100         /* for filtering */
2101         copy_vpaint_prev(vp, (unsigned int *)me->mcol, me->totface);
2102         
2103         /* some old cruft to sort out later */
2104         mul_m4_m4m4(mat, ob->obmat, vpd->vc.rv3d->viewmat);
2105         invert_m4_m4(imat, mat);
2106         copy_m3_m4(vpd->vpimat, imat);
2107
2108         return 1;
2109 }
2110
2111 static void vpaint_paint_face(VPaint *vp, VPaintData *vpd, Object *ob, int index, const float mval[2], float pressure, int UNUSED(flip))
2112 {
2113         ViewContext *vc = &vpd->vc;
2114         Brush *brush = paint_brush(&vp->paint);
2115         Mesh *me = get_mesh(ob);
2116         MFace *mface= ((MFace*)me->mface) + index;
2117         unsigned int *mcol= ((unsigned int*)me->mcol) + 4*index;
2118         unsigned int *mcolorig= ((unsigned int*)vp->vpaint_prev) + 4*index;
2119         float alpha;
2120         int i;
2121         
2122         if((vp->flag & VP_COLINDEX && mface->mat_nr!=ob->actcol-1) ||
2123            ((me->editflag & ME_EDIT_PAINT_MASK) && !(mface->flag & ME_FACE_SEL)))
2124                 return;
2125
2126         if(brush->vertexpaint_tool==VP_BLUR) {
2127                 unsigned int fcol1= mcol_blend( mcol[0], mcol[1], 128);
2128                 if(mface->v4) {
2129                         unsigned int fcol2= mcol_blend( mcol[2], mcol[3], 128);
2130                         vpd->paintcol= mcol_blend( fcol1, fcol2, 128);
2131                 }
2132                 else {
2133                         vpd->paintcol= mcol_blend( mcol[2], fcol1, 170);
2134                 }
2135                 
2136         }
2137
2138         for(i = 0; i < (mface->v4 ? 4 : 3); ++i) {
2139                 alpha= calc_vp_alpha_dl(vp, vc, vpd->vpimat, vpd->vertexcosnos+6*(&mface->v1)[i], mval, pressure);
2140                 if(alpha)
2141                         vpaint_blend(vp, mcol+i, mcolorig+i, vpd->paintcol, (int)(alpha*255.0f));
2142         }
2143 }
2144
2145 static void vpaint_stroke_update_step(bContext *C, struct PaintStroke *stroke, PointerRNA *itemptr)
2146 {
2147         ToolSettings *ts= CTX_data_tool_settings(C);
2148         struct VPaintData *vpd = paint_stroke_mode_data(stroke);
2149         VPaint *vp= ts->vpaint;
2150         Brush *brush = paint_brush(&vp->paint);
2151         ViewContext *vc= &vpd->vc;
2152         Object *ob= vc->obact;
2153         Mesh *me= ob->data;
2154         float mat[4][4];
2155         int *indexar= vpd->indexar;
2156         int totindex, index, flip;
2157         float pressure, mval[2];
2158
2159         RNA_float_get_array(itemptr, "mouse", mval);
2160         flip = RNA_boolean_get(itemptr, "pen_flip");
2161         pressure = RNA_float_get(itemptr, "pressure");
2162                         
2163         view3d_operator_needs_opengl(C);
2164                         
2165         /* load projection matrix */
2166         mul_m4_m4m4(mat, ob->obmat, vc->rv3d->persmat);
2167
2168         mval[0]-= vc->ar->winrct.xmin;
2169         mval[1]-= vc->ar->winrct.ymin;
2170
2171                         
2172         /* which faces are involved */
2173         if(vp->flag & VP_AREA) {
2174                 totindex= sample_backbuf_area(vc, indexar, me->totface, mval[0], mval[1], brush_size(brush));
2175         }
2176         else {
2177                 indexar[0]= view3d_sample_backbuf(vc, mval[0], mval[1]);
2178                 if(indexar[0]) totindex= 1;
2179                 else totindex= 0;
2180         }
2181                         
2182         swap_m4m4(vc->rv3d->persmat, mat);
2183                         
2184         for(index=0; index<totindex; index++) {                         
2185                 if(indexar[index] && indexar[index]<=me->totface)
2186                         vpaint_paint_face(vp, vpd, ob, indexar[index]-1, mval, pressure, flip);
2187         }
2188                                                 
2189         swap_m4m4(vc->rv3d->persmat, mat);
2190
2191         /* was disabled because it is slow, but necessary for blur */
2192         if(brush->vertexpaint_tool == VP_BLUR)
2193                 do_shared_vertexcol(me);
2194                         
2195         ED_region_tag_redraw(vc->ar);
2196                         
2197         DAG_id_tag_update(ob->data, 0);
2198 }
2199
2200 static void vpaint_stroke_done(bContext *C, struct PaintStroke *stroke)
2201 {
2202         ToolSettings *ts= CTX_data_tool_settings(C);
2203         struct VPaintData *vpd= paint_stroke_mode_data(stroke);
2204         
2205         if(vpd->vertexcosnos)
2206                 MEM_freeN(vpd->vertexcosnos);
2207         MEM_freeN(vpd->indexar);
2208         
2209         /* frees prev buffer */
2210         copy_vpaint_prev(ts->vpaint, NULL, 0);
2211         
2212         MEM_freeN(vpd);
2213 }
2214
2215 static int vpaint_invoke(bContext *C, wmOperator *op, wmEvent *event)
2216 {
2217         
2218         op->customdata = paint_stroke_new(C, NULL, vpaint_stroke_test_start,
2219                                           vpaint_stroke_update_step,
2220                                           vpaint_stroke_done, event->type);
2221         
2222         /* add modal handler */
2223         WM_event_add_modal_handler(C, op);
2224
2225         op->type->modal(C, op, event);
2226         
2227         return OPERATOR_RUNNING_MODAL;
2228 }
2229
2230 void PAINT_OT_vertex_paint(wmOperatorType *ot)
2231 {
2232         /* identifiers */
2233         ot->name= "Vertex Paint";
2234         ot->idname= "PAINT_OT_vertex_paint";
2235         
2236         /* api callbacks */
2237         ot->invoke= vpaint_invoke;
2238         ot->modal= paint_stroke_modal;
2239         /* ot->exec= vpaint_exec; <-- needs stroke property */
2240         ot->poll= vertex_paint_poll;
2241         
2242         /* flags */
2243         ot->flag= OPTYPE_REGISTER|OPTYPE_UNDO|OPTYPE_BLOCKING;
2244
2245         RNA_def_collection_runtime(ot->srna, "stroke", &RNA_OperatorStrokeElement, "Stroke", "");
2246 }
2247
2248 /* ********************** weight from bones operator ******************* */
2249
2250 static int weight_from_bones_poll(bContext *C)
2251 {
2252         Object *ob= CTX_data_active_object(C);
2253
2254         return (ob && (ob->mode & OB_MODE_WEIGHT_PAINT) && modifiers_isDeformedByArmature(ob));
2255 }
2256
2257 static int weight_from_bones_exec(bContext *C, wmOperator *op)
2258 {
2259         Scene *scene= CTX_data_scene(C);
2260         Object *ob= CTX_data_active_object(C);
2261         Object *armob= modifiers_isDeformedByArmature(ob);
2262         Mesh *me= ob->data;
2263         int type= RNA_enum_get(op->ptr, "type");
2264
2265         create_vgroups_from_armature(op->reports, scene, ob, armob, type, (me->editflag & ME_EDIT_MIRROR_X));
2266
2267         DAG_id_tag_update(&me->id, 0);
2268         WM_event_add_notifier(C, NC_GEOM|ND_DATA, me);
2269
2270         return OPERATOR_FINISHED;
2271 }
2272
2273 void PAINT_OT_weight_from_bones(wmOperatorType *ot)
2274 {
2275         static EnumPropertyItem type_items[]= {
2276                 {ARM_GROUPS_AUTO, "AUTOMATIC", 0, "Automatic", "Automatic weights froms bones"},
2277                 {ARM_GROUPS_ENVELOPE, "ENVELOPES", 0, "From Envelopes", "Weights from envelopes with user defined radius"},
2278                 {0, NULL, 0, NULL, NULL}};
2279
2280         /* identifiers */
2281         ot->name= "Weight from Bones";
2282         ot->idname= "PAINT_OT_weight_from_bones";
2283         
2284         /* api callbacks */
2285         ot->exec= weight_from_bones_exec;
2286         ot->invoke= WM_menu_invoke;
2287         ot->poll= weight_from_bones_poll;
2288         
2289         /* flags */
2290         ot->flag= OPTYPE_REGISTER|OPTYPE_UNDO;
2291
2292         /* properties */
2293         ot->prop= RNA_def_enum(ot->srna, "type", type_items, 0, "Type", "Method to use for assigning weights.");
2294 }
2295