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 #include "RNA_enum_types.h"
  65
  66 #include "BKE_DerivedMesh.h"
  67 #include "BKE_armature.h"
  68 #include "BKE_action.h"
  69 #include "BKE_brush.h"
  70 #include "BKE_context.h"
  71 #include "BKE_depsgraph.h"
  72 #include "BKE_deform.h"
  73 #include "BKE_mesh.h"
  74 #include "BKE_modifier.h"
  75 #include "BKE_object.h"
  76 #include "BKE_paint.h"
  77 #include "BKE_report.h"
  78
  79 #include "WM_api.h"
  80 #include "WM_types.h"
  81
  82
  83 #include "ED_armature.h"
  84 #include "ED_mesh.h"
  85 #include "ED_screen.h"
  86 #include "ED_view3d.h"
  87
  88 #include "paint_intern.h"
  89
  90 /* brush->vertexpaint_tool */
  91 #define VP_MIX  0
  92 #define VP_ADD  1
  93 #define VP_SUB  2
  94 #define VP_MUL  3
  95 #define VP_BLUR 4
  96 #define VP_LIGHTEN      5
  97 #define VP_DARKEN       6
  98
  99 /* polling - retrieve whether cursor should be set or operator should be done */
 100
 101
 102 /* Returns true if vertex paint mode is active */
 103 int vertex_paint_mode_poll(bContext *C)
 104 {
 105         Object *ob = CTX_data_active_object(C);
 106
 107         return ob && ob->mode == OB_MODE_VERTEX_PAINT && ((Mesh *)ob->data)->totface;
 108 }
 109
 110 int vertex_paint_poll(bContext *C)
 111 {
 112         if(vertex_paint_mode_poll(C) &&
 113            paint_brush(&CTX_data_tool_settings(C)->vpaint->paint)) {
 114                 ScrArea *sa= CTX_wm_area(C);
 115                 if(sa->spacetype==SPACE_VIEW3D) {
 116                         ARegion *ar= CTX_wm_region(C);
 117                         if(ar->regiontype==RGN_TYPE_WINDOW)
 118                                 return 1;
 119                         }
 120                 }
 121         return 0;
 122 }
 123
 124 int weight_paint_mode_poll(bContext *C)
 125 {
 126         Object *ob = CTX_data_active_object(C);
 127
 128         return ob && ob->mode == OB_MODE_WEIGHT_PAINT && ((Mesh *)ob->data)->totface;
 129 }
 130
 131 int weight_paint_poll(bContext *C)
 132 {
 133         Object *ob= CTX_data_active_object(C);
 134         ScrArea *sa;
 135
 136         if(     (ob != NULL) &&
 137                 (ob->mode & OB_MODE_WEIGHT_PAINT) &&
 138                 (paint_brush(&CTX_data_tool_settings(C)->wpaint->paint) != NULL) &&
 139                 (sa= CTX_wm_area(C)) &&
 140                 (sa->spacetype == SPACE_VIEW3D)
 141         ) {
 142                 ARegion *ar= CTX_wm_region(C);
 143                 if(ar->regiontype==RGN_TYPE_WINDOW) {
 144                         return 1;
 145                 }
 146         }
 147         return 0;
 148 }
 149
 150 static VPaint *new_vpaint(int wpaint)
 151 {
 152         VPaint *vp= MEM_callocN(sizeof(VPaint), "VPaint");
 153
 154         vp->flag= VP_AREA+VP_SPRAY;
 155
 156         if(wpaint)
 157                 vp->flag= VP_AREA;
 158
 159         return vp;
 160 }
 161
 162 static int *get_indexarray(Mesh *me)
 163 {
 164         return MEM_mallocN(sizeof(int)*(me->totface+1), "vertexpaint");
 165 }
 166
 167
 168 /* in contradiction to cpack drawing colors, the MCOL colors (vpaint colors) are per byte!
 169    so not endian sensitive. Mcol = ABGR!!! so be cautious with cpack calls */
 170
 171 static unsigned int rgba_to_mcol(float r, float g, float b, float a)
 172 {
 173         int ir, ig, ib, ia;
 174         unsigned int col;
 175         char *cp;
 176
 177         ir= floor(255.0f * r);
 178         if(ir<0) ir= 0; else if(ir>255) ir= 255;
 179         ig= floor(255.0f * g);
 180         if(ig<0) ig= 0; else if(ig>255) ig= 255;
 181         ib= floor(255.0f * b);
 182         if(ib<0) ib= 0; else if(ib>255) ib= 255;
 183         ia= floor(255.0f * a);
 184         if(ia<0) ia= 0; else if(ia>255) ia= 255;
 185
 186         cp= (char *)&col;
 187         cp[0]= ia;
 188         cp[1]= ib;
 189         cp[2]= ig;
 190         cp[3]= ir;
 191
 192         return col;
 193
 194 }
 195
 196 unsigned int vpaint_get_current_col(VPaint *vp)
 197 {
 198         Brush *brush = paint_brush(&vp->paint);
 199         return rgba_to_mcol(brush->rgb[0], brush->rgb[1], brush->rgb[2], 1.0f);
 200 }
 201
 202 static void do_shared_vertexcol(Mesh *me)
 203 {
 204         /* if no mcol: do not do */
 205         /* if tface: only the involved faces, otherwise all */
 206         MFace *mface;
 207         MTFace *tface;
 208         int a;
 209         short *scolmain, *scol;
 210         char *mcol;
 211
 212         if(me->mcol==NULL || me->totvert==0 || me->totface==0) return;
 213
 214         scolmain= MEM_callocN(4*sizeof(short)*me->totvert, "colmain");
 215
 216         tface= me->mtface;
 217         mface= me->mface;
 218         mcol= (char *)me->mcol;
 219         for(a=me->totface; a>0; a--, mface++, mcol+=16) {
 220                 if((tface && tface->mode & TF_SHAREDCOL) || (me->editflag & ME_EDIT_PAINT_MASK)==0) {
 221                         scol= scolmain+4*mface->v1;
 222                         scol[0]++; scol[1]+= mcol[1]; scol[2]+= mcol[2]; scol[3]+= mcol[3];
 223                         scol= scolmain+4*mface->v2;
 224                         scol[0]++; scol[1]+= mcol[5]; scol[2]+= mcol[6]; scol[3]+= mcol[7];
 225                         scol= scolmain+4*mface->v3;
 226                         scol[0]++; scol[1]+= mcol[9]; scol[2]+= mcol[10]; scol[3]+= mcol[11];
 227                         if(mface->v4) {
 228                                 scol= scolmain+4*mface->v4;
 229                                 scol[0]++; scol[1]+= mcol[13]; scol[2]+= mcol[14]; scol[3]+= mcol[15];
 230                         }
 231                 }
 232                 if(tface) tface++;
 233         }
 234
 235         a= me->totvert;
 236         scol= scolmain;
 237         while(a--) {
 238                 if(scol[0]>1) {
 239                         scol[1]/= scol[0];
 240                         scol[2]/= scol[0];
 241                         scol[3]/= scol[0];
 242                 }
 243                 scol+= 4;
 244         }
 245
 246         tface= me->mtface;
 247         mface= me->mface;
 248         mcol= (char *)me->mcol;
 249         for(a=me->totface; a>0; a--, mface++, mcol+=16) {
 250                 if((tface && tface->mode & TF_SHAREDCOL) || (me->editflag & ME_EDIT_PAINT_MASK)==0) {
 251                         scol= scolmain+4*mface->v1;
 252                         mcol[1]= scol[1]; mcol[2]= scol[2]; mcol[3]= scol[3];
 253                         scol= scolmain+4*mface->v2;
 254                         mcol[5]= scol[1]; mcol[6]= scol[2]; mcol[7]= scol[3];
 255                         scol= scolmain+4*mface->v3;
 256                         mcol[9]= scol[1]; mcol[10]= scol[2]; mcol[11]= scol[3];
 257                         if(mface->v4) {
 258                                 scol= scolmain+4*mface->v4;
 259                                 mcol[13]= scol[1]; mcol[14]= scol[2]; mcol[15]= scol[3];
 260                         }
 261                 }
 262                 if(tface) tface++;
 263         }
 264
 265         MEM_freeN(scolmain);
 266 }
 267
 268 static void make_vertexcol(Object *ob)  /* single ob */
 269 {
 270         Mesh *me;
 271         if(!ob || ob->id.lib) return;
 272         me= get_mesh(ob);
 273         if(me==NULL) return;
 274         if(me->edit_mesh) return;
 275
 276         /* copies from shadedisplist to mcol */
 277         if(!me->mcol) {
 278                 CustomData_add_layer(&me->fdata, CD_MCOL, CD_CALLOC, NULL, me->totface);
 279                 mesh_update_customdata_pointers(me);
 280         }
 281
 282         //if(shade)
 283         //      shadeMeshMCol(scene, ob, me);
 284         //else
 285
 286         memset(me->mcol, 255, 4*sizeof(MCol)*me->totface);
 287
 288         DAG_id_tag_update(&me->id, 0);
 289
 290 }
 291
 292 /* mirror_vgroup is set to -1 when invalid */
 293 static void wpaint_mirror_vgroup_ensure(Object *ob, int *vgroup_mirror)
 294 {
 295         bDeformGroup *defgroup= BLI_findlink(&ob->defbase, ob->actdef - 1);
 296
 297         if(defgroup) {
 298                 bDeformGroup *curdef;
 299                 int mirrdef;
 300                 char name[MAXBONENAME];
 301
 302                 flip_side_name(name, defgroup->name, FALSE);
 303
 304                 if(strcmp(name, defgroup->name) != 0) {
 305                         for (curdef= ob->defbase.first, mirrdef= 0; curdef; curdef=curdef->next, mirrdef++) {
 306                                 if (!strcmp(curdef->name, name)) {
 307                                         break;
 308                                 }
 309                         }
 310
 311                         if(curdef==NULL) {
 312                                 int olddef= ob->actdef; /* tsk, ED_vgroup_add sets the active defgroup */
 313                                 curdef= ED_vgroup_add_name(ob, name);
 314                                 ob->actdef= olddef;
 315                         }
 316
 317                         /* curdef should never be NULL unless this is
 318                          * a  lamp and ED_vgroup_add_name fails */
 319                         if(curdef) {
 320                                 *vgroup_mirror= mirrdef;
 321                                 return;
 322                         }
 323                 }
 324         }
 325
 326         *vgroup_mirror= -1;
 327 }
 328
 329 static void copy_vpaint_prev(VPaint *vp, unsigned int *mcol, int tot)
 330 {
 331         if(vp->vpaint_prev) {
 332                 MEM_freeN(vp->vpaint_prev);
 333                 vp->vpaint_prev= NULL;
 334         }
 335         vp->tot= tot;
 336
 337         if(mcol==NULL || tot==0) return;
 338
 339         vp->vpaint_prev= MEM_mallocN(4*sizeof(int)*tot, "vpaint_prev");
 340         memcpy(vp->vpaint_prev, mcol, 4*sizeof(int)*tot);
 341
 342 }
 343
 344 static void copy_wpaint_prev (VPaint *wp, MDeformVert *dverts, int dcount)
 345 {
 346         if (wp->wpaint_prev) {
 347                 free_dverts(wp->wpaint_prev, wp->tot);
 348                 wp->wpaint_prev= NULL;
 349         }
 350
 351         if(dverts && dcount) {
 352
 353                 wp->wpaint_prev = MEM_mallocN (sizeof(MDeformVert)*dcount, "wpaint prev");
 354                 wp->tot = dcount;
 355                 copy_dverts (wp->wpaint_prev, dverts, dcount);
 356         }
 357 }
 358
 359
 360 void vpaint_fill(Object *ob, unsigned int paintcol)
 361 {
 362         Mesh *me;
 363         MFace *mf;
 364         unsigned int *mcol;
 365         int i, selected;
 366
 367         me= get_mesh(ob);
 368         if(me==NULL || me->totface==0) return;
 369
 370         if(!me->mcol)
 371                 make_vertexcol(ob);
 372
 373         selected= (me->editflag & ME_EDIT_PAINT_MASK);
 374
 375         mf = me->mface;
 376         mcol = (unsigned int*)me->mcol;
 377         for (i = 0; i < me->totface; i++, mf++, mcol+=4) {
 378                 if (!selected || mf->flag & ME_FACE_SEL) {
 379                         mcol[0] = paintcol;
 380                         mcol[1] = paintcol;
 381                         mcol[2] = paintcol;
 382                         mcol[3] = paintcol;
 383                 }
 384         }
 385
 386         DAG_id_tag_update(&me->id, 0);
 387 }
 388
 389
 390 /* fills in the selected faces with the current weight and vertex group */
 391 void wpaint_fill(VPaint *wp, Object *ob, float paintweight)
 392 {
 393         Mesh *me;
 394         MDeformWeight *dw, *uw;
 395         int *indexar;
 396         unsigned int index;
 397         int vgroup, vgroup_mirror= -1;
 398         int selected;
 399
 400         int use_vert_sel;
 401
 402         me= ob->data;
 403         if(me==NULL || me->totface==0 || me->dvert==NULL || !me->mface) return;
 404
 405         selected= (me->editflag & ME_EDIT_PAINT_MASK);
 406
 407         use_vert_sel= (me->editflag & ME_EDIT_VERT_SEL) != 0;
 408
 409         indexar= get_indexarray(me);
 410
 411         if(selected) {
 412                 MFace *mf;
 413                 for(index=0, mf= me->mface; index<me->totface; index++, mf++) {
 414                         if((mf->flag & ME_FACE_SEL)==0)
 415                                 indexar[index]= 0;
 416                         else
 417                                 indexar[index]= index+1;
 418                 }
 419         }
 420         else {
 421                 for(index=0; index<me->totface; index++)
 422                         indexar[index]= index+1;
 423         }
 424
 425         vgroup= ob->actdef-1;
 426
 427         /* if mirror painting, find the other group */
 428         if(me->editflag & ME_EDIT_MIRROR_X) {
 429                 wpaint_mirror_vgroup_ensure(ob, &vgroup_mirror);
 430         }
 431
 432         copy_wpaint_prev(wp, me->dvert, me->totvert);
 433
 434         for(index=0; index<me->totface; index++) {
 435                 if(indexar[index] && indexar[index]<=me->totface) {
 436                         MFace *mf= &me->mface[indexar[index]-1];
 437                         unsigned int fidx= mf->v4 ? 3:2;
 438
 439                         do {
 440                                 unsigned int vidx= *(&mf->v1 + fidx);
 441
 442                                 if(!me->dvert[vidx].flag) {
 443                                         if(use_vert_sel && !(me->mvert[vidx].flag & SELECT)) {
 444                                                 continue;
 445                                         }
 446
 447                                         dw= defvert_verify_index(&me->dvert[vidx], vgroup);
 448                                         if(dw) {
 449                                                 uw= defvert_verify_index(wp->wpaint_prev+vidx, vgroup);
 450                                                 uw->weight= dw->weight; /* set the undo weight */
 451                                                 dw->weight= paintweight;
 452
 453                                                 if(me->editflag & ME_EDIT_MIRROR_X) {   /* x mirror painting */
 454                                                         int j= mesh_get_x_mirror_vert(ob, vidx);
 455                                                         if(j>=0) {
 456                                                                 /* copy, not paint again */
 457                                                                 if(vgroup_mirror != -1) {
 458                                                                         dw= defvert_verify_index(me->dvert+j, vgroup_mirror);
 459                                                                         uw= defvert_verify_index(wp->wpaint_prev+j, vgroup_mirror);
 460                                                                 } else {
 461                                                                         dw= defvert_verify_index(me->dvert+j, vgroup);
 462                                                                         uw= defvert_verify_index(wp->wpaint_prev+j, vgroup);
 463                                                                 }
 464                                                                 uw->weight= dw->weight; /* set the undo weight */
 465                                                                 dw->weight= paintweight;
 466                                                         }
 467                                                 }
 468                                         }
 469                                         me->dvert[vidx].flag= 1;
 470                                 }
 471
 472
 473                         } while (fidx--);
 474                 }
 475         }
 476
 477         {
 478                 MDeformVert *dv= me->dvert;
 479                 for(index= me->totvert; index != 0; index--, dv++) {
 480                         dv->flag= 0;
 481                 }
 482         }
 483
 484         MEM_freeN(indexar);
 485         copy_wpaint_prev(wp, NULL, 0);
 486
 487         DAG_id_tag_update(&me->id, 0);
 488 }
 489
 490 /* XXX: should be re-implemented as a vertex/weight paint 'color correct' operator
 491
 492 void vpaint_dogamma(Scene *scene)
 493 {
 494         VPaint *vp= scene->toolsettings->vpaint;
 495         Mesh *me;
 496         Object *ob;
 497         float igam, fac;
 498         int a, temp;
 499         unsigned char *cp, gamtab[256];
 500
 501         ob= OBACT;
 502         me= get_mesh(ob);
 503
 504         if(!(ob->mode & OB_MODE_VERTEX_PAINT)) return;
 505         if(me==0 || me->mcol==0 || me->totface==0) return;
 506
 507         igam= 1.0/vp->gamma;
 508         for(a=0; a<256; a++) {
 509
 510                 fac= ((float)a)/255.0;
 511                 fac= vp->mul*pow( fac, igam);
 512
 513                 temp= 255.9*fac;
 514
 515                 if(temp<=0) gamtab[a]= 0;
 516                 else if(temp>=255) gamtab[a]= 255;
 517                 else gamtab[a]= temp;
 518         }
 519
 520         a= 4*me->totface;
 521         cp= (unsigned char *)me->mcol;
 522         while(a--) {
 523
 524                 cp[1]= gamtab[ cp[1] ];
 525                 cp[2]= gamtab[ cp[2] ];
 526                 cp[3]= gamtab[ cp[3] ];
 527
 528                 cp+= 4;
 529         }
 530 }
 531  */
 532
 533 static unsigned int mcol_blend(unsigned int col1, unsigned int col2, int fac)
 534 {
 535         char *cp1, *cp2, *cp;
 536         int mfac;
 537         unsigned int col=0;
 538
 539         if(fac==0) return col1;
 540         if(fac>=255) return col2;
 541
 542         mfac= 255-fac;
 543
 544         cp1= (char *)&col1;
 545         cp2= (char *)&col2;
 546         cp=  (char *)&col;
 547
 548         cp[0]= 255;
 549         cp[1]= (mfac*cp1[1]+fac*cp2[1])/255;
 550         cp[2]= (mfac*cp1[2]+fac*cp2[2])/255;
 551         cp[3]= (mfac*cp1[3]+fac*cp2[3])/255;
 552
 553         return col;
 554 }
 555
 556 static unsigned int mcol_add(unsigned int col1, unsigned int col2, int fac)
 557 {
 558         char *cp1, *cp2, *cp;
 559         int temp;
 560         unsigned int col=0;
 561
 562         if(fac==0) return col1;
 563
 564         cp1= (char *)&col1;
 565         cp2= (char *)&col2;
 566         cp=  (char *)&col;
 567
 568         cp[0]= 255;
 569         temp= cp1[1] + ((fac*cp2[1])/255);
 570         if(temp>254) cp[1]= 255; else cp[1]= temp;
 571         temp= cp1[2] + ((fac*cp2[2])/255);
 572         if(temp>254) cp[2]= 255; else cp[2]= temp;
 573         temp= cp1[3] + ((fac*cp2[3])/255);
 574         if(temp>254) cp[3]= 255; else cp[3]= temp;
 575
 576         return col;
 577 }
 578
 579 static unsigned int mcol_sub(unsigned int col1, unsigned int col2, int fac)
 580 {
 581         char *cp1, *cp2, *cp;
 582         int temp;
 583         unsigned int col=0;
 584
 585         if(fac==0) return col1;
 586
 587         cp1= (char *)&col1;
 588         cp2= (char *)&col2;
 589         cp=  (char *)&col;
 590
 591         cp[0]= 255;
 592         temp= cp1[1] - ((fac*cp2[1])/255);
 593         if(temp<0) cp[1]= 0; else cp[1]= temp;
 594         temp= cp1[2] - ((fac*cp2[2])/255);
 595         if(temp<0) cp[2]= 0; else cp[2]= temp;
 596         temp= cp1[3] - ((fac*cp2[3])/255);
 597         if(temp<0) cp[3]= 0; else cp[3]= temp;
 598
 599         return col;
 600 }
 601
 602 static unsigned int mcol_mul(unsigned int col1, unsigned int col2, int fac)
 603 {
 604         char *cp1, *cp2, *cp;
 605         int mfac;
 606         unsigned int col=0;
 607
 608         if(fac==0) return col1;
 609
 610         mfac= 255-fac;
 611
 612         cp1= (char *)&col1;
 613         cp2= (char *)&col2;
 614         cp=  (char *)&col;
 615
 616         /* first mul, then blend the fac */
 617         cp[0]= 255;
 618         cp[1]= (mfac*cp1[1] + fac*((cp2[1]*cp1[1])/255)  )/255;
 619         cp[2]= (mfac*cp1[2] + fac*((cp2[2]*cp1[2])/255)  )/255;
 620         cp[3]= (mfac*cp1[3] + fac*((cp2[3]*cp1[3])/255)  )/255;
 621
 622
 623         return col;
 624 }
 625
 626 static unsigned int mcol_lighten(unsigned int col1, unsigned int col2, int fac)
 627 {
 628         char *cp1, *cp2, *cp;
 629         int mfac;
 630         unsigned int col=0;
 631
 632         if(fac==0) return col1;
 633         if(fac>=255) return col2;
 634
 635         mfac= 255-fac;
 636
 637         cp1= (char *)&col1;
 638         cp2= (char *)&col2;
 639         cp=  (char *)&col;
 640
 641         /* See if are lighter, if so mix, else dont do anything.
 642         if the paint col is darker then the original, then ignore */
 643         if (cp1[1]+cp1[2]+cp1[3] > cp2[1]+cp2[2]+cp2[3])
 644                 return col1;
 645
 646         cp[0]= 255;
 647         cp[1]= (mfac*cp1[1]+fac*cp2[1])/255;
 648         cp[2]= (mfac*cp1[2]+fac*cp2[2])/255;
 649         cp[3]= (mfac*cp1[3]+fac*cp2[3])/255;
 650
 651         return col;
 652 }
 653
 654 static unsigned int mcol_darken(unsigned int col1, unsigned int col2, int fac)
 655 {
 656         char *cp1, *cp2, *cp;
 657         int mfac;
 658         unsigned int col=0;
 659
 660         if(fac==0) return col1;
 661         if(fac>=255) return col2;
 662
 663         mfac= 255-fac;
 664
 665         cp1= (char *)&col1;
 666         cp2= (char *)&col2;
 667         cp=  (char *)&col;
 668
 669         /* See if were darker, if so mix, else dont do anything.
 670         if the paint col is brighter then the original, then ignore */
 671         if (cp1[1]+cp1[2]+cp1[3] < cp2[1]+cp2[2]+cp2[3])
 672                 return col1;
 673
 674         cp[0]= 255;
 675         cp[1]= (mfac*cp1[1]+fac*cp2[1])/255;
 676         cp[2]= (mfac*cp1[2]+fac*cp2[2])/255;
 677         cp[3]= (mfac*cp1[3]+fac*cp2[3])/255;
 678         return col;
 679 }
 680
 681 static void vpaint_blend(VPaint *vp, unsigned int *col, unsigned int *colorig, unsigned int paintcol, int alpha)
 682 {
 683         Brush *brush = paint_brush(&vp->paint);
 684
 685         if(brush->vertexpaint_tool==VP_MIX || brush->vertexpaint_tool==VP_BLUR) *col= mcol_blend( *col, paintcol, alpha);
 686         else if(brush->vertexpaint_tool==VP_ADD) *col= mcol_add( *col, paintcol, alpha);
 687         else if(brush->vertexpaint_tool==VP_SUB) *col= mcol_sub( *col, paintcol, alpha);
 688         else if(brush->vertexpaint_tool==VP_MUL) *col= mcol_mul( *col, paintcol, alpha);
 689         else if(brush->vertexpaint_tool==VP_LIGHTEN) *col= mcol_lighten( *col, paintcol, alpha);
 690         else if(brush->vertexpaint_tool==VP_DARKEN) *col= mcol_darken( *col, paintcol, alpha);
 691
 692         /* if no spray, clip color adding with colorig & orig alpha */
 693         if((vp->flag & VP_SPRAY)==0) {
 694                 unsigned int testcol=0, a;
 695                 char *cp, *ct, *co;
 696
 697                 alpha= (int)(255.0f*brush_alpha(brush));
 698
 699                 if(brush->vertexpaint_tool==VP_MIX || brush->vertexpaint_tool==VP_BLUR) testcol= mcol_blend( *colorig, paintcol, alpha);
 700                 else if(brush->vertexpaint_tool==VP_ADD) testcol= mcol_add( *colorig, paintcol, alpha);
 701                 else if(brush->vertexpaint_tool==VP_SUB) testcol= mcol_sub( *colorig, paintcol, alpha);
 702                 else if(brush->vertexpaint_tool==VP_MUL) testcol= mcol_mul( *colorig, paintcol, alpha);
 703                 else if(brush->vertexpaint_tool==VP_LIGHTEN)  testcol= mcol_lighten( *colorig, paintcol, alpha);
 704                 else if(brush->vertexpaint_tool==VP_DARKEN)   testcol= mcol_darken( *colorig, paintcol, alpha);
 705
 706                 cp= (char *)col;
 707                 ct= (char *)&testcol;
 708                 co= (char *)colorig;
 709
 710                 for(a=0; a<4; a++) {
 711                         if( ct[a]<co[a] ) {
 712                                 if( cp[a]<ct[a] ) cp[a]= ct[a];
 713                                 else if( cp[a]>co[a] ) cp[a]= co[a];
 714                         }
 715                         else {
 716                                 if( cp[a]<co[a] ) cp[a]= co[a];
 717                                 else if( cp[a]>ct[a] ) cp[a]= ct[a];
 718                         }
 719                 }
 720         }
 721 }
 722
 723
 724 static int sample_backbuf_area(ViewContext *vc, int *indexar, int totface, int x, int y, float size)
 725 {
 726         struct ImBuf *ibuf;
 727         int a, tot=0, index;
 728
 729         /* brecht: disabled this because it obviously failes for
 730            brushes with size > 64, why is this here? */
 731         /*if(size>64.0) size= 64.0;*/
 732
 733         ibuf= view3d_read_backbuf(vc, x-size, y-size, x+size, y+size);
 734         if(ibuf) {
 735                 unsigned int *rt= ibuf->rect;
 736
 737                 memset(indexar, 0, sizeof(int)*(totface+1));
 738
 739                 size= ibuf->x*ibuf->y;
 740                 while(size--) {
 741
 742                         if(*rt) {
 743                                 index= WM_framebuffer_to_index(*rt);
 744                                 if(index>0 && index<=totface)
 745                                         indexar[index] = 1;
 746                         }
 747
 748                         rt++;
 749                 }
 750
 751                 for(a=1; a<=totface; a++) {
 752                         if(indexar[a]) indexar[tot++]= a;
 753                 }
 754
 755                 IMB_freeImBuf(ibuf);
 756         }
 757
 758         return tot;
 759 }
 760
 761 static float calc_vp_alpha_dl(VPaint *vp, ViewContext *vc, float vpimat[][3], float *vert_nor, const float mval[2], float pressure)
 762 {
 763         Brush *brush = paint_brush(&vp->paint);
 764         float fac, fac_2, size, dx, dy;
 765         float alpha;
 766         int vertco[2];
 767         const int radius= brush_size(brush);
 768
 769         project_int_noclip(vc->ar, vert_nor, vertco);
 770         dx= mval[0]-vertco[0];
 771         dy= mval[1]-vertco[1];
 772
 773         if (brush_use_size_pressure(brush))
 774                 size = pressure * radius;
 775         else
 776                 size = radius;
 777
 778         fac_2= dx*dx + dy*dy;
 779         if(fac_2 > size*size) return 0.f;
 780         fac = sqrtf(fac_2);
 781
 782         alpha= brush_alpha(brush) * brush_curve_strength_clamp(brush, fac, size);
 783
 784         if (brush_use_alpha_pressure(brush))
 785                 alpha *= pressure;
 786
 787         if(vp->flag & VP_NORMALS) {
 788                 float *no= vert_nor+3;
 789
 790                 /* transpose ! */
 791                 fac= vpimat[2][0]*no[0]+vpimat[2][1]*no[1]+vpimat[2][2]*no[2];
 792                 if(fac > 0.0f) {
 793                         dx= vpimat[0][0]*no[0]+vpimat[0][1]*no[1]+vpimat[0][2]*no[2];
 794                         dy= vpimat[1][0]*no[0]+vpimat[1][1]*no[1]+vpimat[1][2]*no[2];
 795
 796                         alpha*= fac/sqrtf(dx*dx + dy*dy + fac*fac);
 797                 }
 798                 else return 0.f;
 799         }
 800
 801         return alpha;
 802 }
 803
 804 static void wpaint_blend(VPaint *wp, MDeformWeight *dw, MDeformWeight *uw, float alpha, float paintval, int flip, int multipaint)
 805 {
 806         Brush *brush = paint_brush(&wp->paint);
 807         int tool = brush->vertexpaint_tool;
 808
 809         if(dw==NULL || uw==NULL) return;
 810
 811         if (flip) {
 812                 switch(tool) {
 813                         case VP_MIX:
 814                                 paintval = 1.f - paintval; break;
 815                         case VP_ADD:
 816                                 tool= VP_SUB; break;
 817                         case VP_SUB:
 818                                 tool= VP_ADD; break;
 819                         case VP_LIGHTEN:
 820                                 tool= VP_DARKEN; break;
 821                         case VP_DARKEN:
 822                                 tool= VP_LIGHTEN; break;
 823                 }
 824         }
 825
 826         if(tool==VP_MIX || tool==VP_BLUR)
 827                 dw->weight = paintval*alpha + dw->weight*(1.0f-alpha);
 828         else if(tool==VP_ADD)
 829                 dw->weight += paintval*alpha;
 830         else if(tool==VP_SUB)
 831                 dw->weight -= paintval*alpha;
 832         else if(tool==VP_MUL)
 833                 /* first mul, then blend the fac */
 834                 dw->weight = ((1.0f-alpha) + alpha*paintval)*dw->weight;
 835         else if(tool==VP_LIGHTEN) {
 836                 if (dw->weight < paintval)
 837                         dw->weight = paintval*alpha + dw->weight*(1.0f-alpha);
 838         } else if(tool==VP_DARKEN) {
 839                 if (dw->weight > paintval)
 840                         dw->weight = paintval*alpha + dw->weight*(1.0f-alpha);
 841         }
 842         /*  delay clamping until the end so multi-paint can function when the active group is at the limits */
 843         if(multipaint == FALSE) {
 844                 CLAMP(dw->weight, 0.0f, 1.0f);
 845         }
 846
 847         /* if no spray, clip result with orig weight & orig alpha */
 848         if((wp->flag & VP_SPRAY)==0) {
 849                 float testw=0.0f;
 850
 851                 alpha= brush_alpha(brush);
 852                 if(tool==VP_MIX || tool==VP_BLUR)
 853                         testw = paintval*alpha + uw->weight*(1.0f-alpha);
 854                 else if(tool==VP_ADD)
 855                         testw = uw->weight + paintval*alpha;
 856                 else if(tool==VP_SUB)
 857                         testw = uw->weight - paintval*alpha;
 858                 else if(tool==VP_MUL)
 859                         /* first mul, then blend the fac */
 860                         testw = ((1.0f-alpha) + alpha*paintval)*uw->weight;
 861                 else if(tool==VP_LIGHTEN) {
 862                         if (uw->weight < paintval)
 863                                 testw = paintval*alpha + uw->weight*(1.0f-alpha);
 864                         else
 865                                 testw = uw->weight;
 866                 } else if(tool==VP_DARKEN) {
 867                         if (uw->weight > paintval)
 868                                 testw = paintval*alpha + uw->weight*(1.0f-alpha);
 869                         else
 870                                 testw = uw->weight;
 871                 }
 872
 873                 if(multipaint == FALSE) {
 874                         CLAMP(testw, 0.0f, 1.0f);
 875                         if( testw<uw->weight ) {
 876                                 if(dw->weight < testw) dw->weight= testw;
 877                                 else if(dw->weight > uw->weight) dw->weight= uw->weight;
 878                         }
 879                         else {
 880                                 if(dw->weight > testw) dw->weight= testw;
 881                                 else if(dw->weight < uw->weight) dw->weight= uw->weight;
 882                         }
 883                 }
 884         }
 885
 886 }
 887
 888 /* ----------------------------------------------------- */
 889
 890
 891 /* sets wp->weight to the closest weight value to vertex */
 892 /* note: we cant sample frontbuf, weight colors are interpolated too unpredictable */
 893 static int weight_sample_invoke(bContext *C, wmOperator *op, wmEvent *event)
 894 {
 895         ViewContext vc;
 896         Mesh *me;
 897         short change= FALSE;
 898
 899         view3d_set_viewcontext(C, &vc);
 900         me= get_mesh(vc.obact);
 901
 902         if (me && me->dvert && vc.v3d && vc.rv3d) {
 903                 int index;
 904
 905                 view3d_operator_needs_opengl(C);
 906
 907                 index= view3d_sample_backbuf(&vc, event->mval[0], event->mval[1]);
 908
 909                 if(index && index<=me->totface) {
 910                         DerivedMesh *dm= mesh_get_derived_final(vc.scene, vc.obact, CD_MASK_BAREMESH);
 911
 912                         if(dm->getVertCo==NULL) {
 913                                 BKE_report(op->reports, RPT_WARNING, "The modifier used does not support deformed locations");
 914                         }
 915                         else {
 916                                 MFace *mf= ((MFace *)me->mface) + index-1;
 917                                 const int vgroup= vc.obact->actdef - 1;
 918                                 ToolSettings *ts= vc.scene->toolsettings;
 919                                 float mval_f[2];
 920                                 int v_idx_best= -1;
 921                                 int fidx;
 922                                 float len_best= FLT_MAX;
 923
 924                                 mval_f[0]= (float)event->mval[0];
 925                                 mval_f[1]= (float)event->mval[1];
 926
 927                                 fidx= mf->v4 ? 3:2;
 928                                 do {
 929                                         float co[3], sco[3], len;
 930                                         const int v_idx= (*(&mf->v1 + fidx));
 931                                         dm->getVertCo(dm, v_idx, co);
 932                                         project_float_noclip(vc.ar, co, sco);
 933                                         len= len_squared_v2v2(mval_f, sco);
 934                                         if(len < len_best) {
 935                                                 len_best= len;
 936                                                 v_idx_best= v_idx;
 937                                         }
 938                                 } while (fidx--);
 939
 940                                 if(v_idx_best != -1) { /* should always be valid */
 941                                         ts->vgroup_weight= defvert_find_weight(&me->dvert[v_idx_best], vgroup);
 942                                         change= TRUE;
 943                                 }
 944                         }
 945                         dm->release(dm);
 946                 }
 947         }
 948
 949         if(change) {
 950                 /* not really correct since the brush didnt change, but redraws the toolbar */
 951                 WM_main_add_notifier(NC_BRUSH|NA_EDITED, NULL); /* ts->wpaint->paint.brush */
 952
 953                 return OPERATOR_FINISHED;
 954         }
 955         else {
 956                 return OPERATOR_CANCELLED;
 957         }
 958 }
 959
 960 void PAINT_OT_weight_sample(wmOperatorType *ot)
 961 {
 962         /* identifiers */
 963         ot->name= "Weight Paint Sample Weight";
 964         ot->idname= "PAINT_OT_weight_sample";
 965
 966         /* api callbacks */
 967         ot->invoke= weight_sample_invoke;
 968         ot->poll= weight_paint_mode_poll;
 969
 970         /* flags */
 971         ot->flag= OPTYPE_UNDO;
 972 }
 973
 974 /* samples cursor location, and gives menu with vertex groups to activate */
 975 static EnumPropertyItem *weight_paint_sample_enum_itemf(bContext *C, PointerRNA *UNUSED(ptr), PropertyRNA *UNUSED(prop), int *free)
 976 {
 977         if (C) {
 978                 wmWindow *win= CTX_wm_window(C);
 979                 if(win && win->eventstate) {
 980                         ViewContext vc;
 981                         Mesh *me;
 982
 983                         view3d_set_viewcontext(C, &vc);
 984                         me= get_mesh(vc.obact);
 985
 986                         if (me && me->dvert && vc.v3d && vc.rv3d) {
 987                                 int index;
 988
 989                                 view3d_operator_needs_opengl(C);
 990
 991                                 index= view3d_sample_backbuf(&vc, win->eventstate->x - vc.ar->winrct.xmin, win->eventstate->y - vc.ar->winrct.ymin);
 992
 993                                 if(index && index<=me->totface) {
 994                                         const int totgroup= BLI_countlist(&vc.obact->defbase);
 995                                         if(totgroup) {
 996                                                 MFace *mf= ((MFace *)me->mface) + index-1;
 997                                                 unsigned int fidx= mf->v4 ? 3:2;
 998                                                 int *groups= MEM_callocN(totgroup*sizeof(int), "groups");
 999                                                 int found= FALSE;
1000
1001                                                 do {
1002                                                         MDeformVert *dvert= me->dvert + (*(&mf->v1 + fidx));
1003                                                         int i= dvert->totweight;
1004                                                         MDeformWeight *dw;
1005                                                         for(dw= dvert->dw; i > 0; dw++, i--) {
1006                                                                 groups[dw->def_nr]= TRUE;
1007                                                                 found= TRUE;
1008                                                         }
1009                                                 } while (fidx--);
1010
1011                                                 if(found==FALSE) {
1012                                                         MEM_freeN(groups);
1013                                                 }
1014                                                 else {
1015                                                         EnumPropertyItem *item= NULL, item_tmp= {0};
1016                                                         int totitem= 0;
1017                                                         int i= 0;
1018                                                         bDeformGroup *dg;
1019                                                         for(dg= vc.obact->defbase.first; dg && i<totgroup; i++, dg= dg->next) {
1020                                                                 if(groups[i]) {
1021                                                                         item_tmp.identifier= item_tmp.name= dg->name;
1022                                                                         item_tmp.value= i;
1023                                                                         RNA_enum_item_add(&item, &totitem, &item_tmp);
1024                                                                 }
1025                                                         }
1026
1027                                                         RNA_enum_item_end(&item, &totitem);
1028                                                         *free= 1;
1029
1030                                                         MEM_freeN(groups);
1031                                                         return item;
1032                                                 }
1033                                         }
1034                                 }
1035                         }
1036                 }
1037         }
1038
1039         return DummyRNA_NULL_items;
1040 }
1041
1042 static int weight_sample_group_exec(bContext *C, wmOperator *op)
1043 {
1044         int type= RNA_enum_get(op->ptr, "group");
1045         ViewContext vc;
1046         view3d_set_viewcontext(C, &vc);
1047
1048         vc.obact->actdef= type + 1;
1049
1050         DAG_id_tag_update(&vc.obact->id, OB_RECALC_DATA);
1051         WM_event_add_notifier(C, NC_OBJECT|ND_DRAW, vc.obact);
1052         return OPERATOR_FINISHED;
1053 }
1054
1055 /* TODO, we could make this a menu into OBJECT_OT_vertex_group_set_active rather than its own operator */
1056 void PAINT_OT_weight_sample_group(wmOperatorType *ot)
1057 {
1058         PropertyRNA *prop= NULL;
1059
1060         /* identifiers */
1061         ot->name= "Weight Paint Sample Group";
1062         ot->idname= "PAINT_OT_weight_sample_group";
1063
1064         /* api callbacks */
1065         ot->exec= weight_sample_group_exec;
1066         ot->invoke= WM_menu_invoke;
1067         ot->poll= weight_paint_mode_poll;
1068
1069         /* flags */
1070         ot->flag= OPTYPE_UNDO;
1071
1072         /* keyingset to use (dynamic enum) */
1073         prop= RNA_def_enum(ot->srna, "group", DummyRNA_DEFAULT_items, 0, "Keying Set", "The Keying Set to use");
1074         RNA_def_enum_funcs(prop, weight_paint_sample_enum_itemf);
1075         ot->prop= prop;
1076 }
1077
1078
1079 #if 0 /* UNUSED */
1080 static void do_weight_paint_auto_normalize(MDeformVert *dvert,
1081                                            int paint_nr, char *map)
1082 {
1083 //      MDeformWeight *dw = dvert->dw;
1084         float sum=0.0f, fac=0.0f, paintw=0.0f;
1085         int i, tot=0;
1086
1087         if (!map)
1088                 return;
1089
1090         for (i=0; i<dvert->totweight; i++) {
1091                 if (dvert->dw[i].def_nr == paint_nr)
1092                         paintw = dvert->dw[i].weight;
1093
1094                 if (map[dvert->dw[i].def_nr]) {
1095                         tot += 1;
1096                         if (dvert->dw[i].def_nr != paint_nr)
1097                                 sum += dvert->dw[i].weight;
1098                 }
1099         }
1100
1101         if (!tot || sum <= (1.0f - paintw))
1102                 return;
1103
1104         fac = sum / (1.0f - paintw);
1105         fac = fac==0.0f ? 1.0f : 1.0f / fac;
1106
1107         for (i=0; i<dvert->totweight; i++) {
1108                 if (map[dvert->dw[i].def_nr]) {
1109                         if (dvert->dw[i].def_nr != paint_nr)
1110                                 dvert->dw[i].weight *= fac;
1111                 }
1112         }
1113 }
1114 #endif
1115
1116 /* the active group should be involved in auto normalize */
1117 static void do_weight_paint_auto_normalize_all_groups(MDeformVert *dvert, char *map, char do_auto_normalize)
1118 {
1119 //      MDeformWeight *dw = dvert->dw;
1120         float sum=0.0f, fac=0.0f;
1121         int i, tot=0;
1122
1123         if (do_auto_normalize == FALSE)
1124                 return;
1125
1126         for (i=0; i<dvert->totweight; i++) {
1127                 if (map[dvert->dw[i].def_nr]) {
1128                         tot += 1;
1129                         sum += dvert->dw[i].weight;
1130                 }
1131         }
1132
1133         if (!tot || sum == 1.0f)
1134                 return;
1135
1136         fac = sum;
1137         fac = fac==0.0f ? 1.0f : 1.0f / fac;
1138
1139         for (i=0; i<dvert->totweight; i++) {
1140                 if (map[dvert->dw[i].def_nr]) {
1141                         dvert->dw[i].weight *= fac;
1142                 }
1143         }
1144 }
1145
1146 /*
1147 See if the current deform vertex has a locked group
1148 */
1149 static char has_locked_group(MDeformVert *dvert, const char *lock_flags)
1150 {
1151         int i;
1152         for(i = 0; i < dvert->totweight; i++) {
1153                 if(lock_flags[dvert->dw[i].def_nr] && dvert->dw[i].weight > 0.0f) {
1154                         return TRUE;
1155                 }
1156         }
1157         return FALSE;
1158 }
1159 /*
1160  * gen_lck_flags gets the status of "flag" for each bDeformGroup
1161  *in ob->defbase and returns an array containing them
1162  */
1163 static char *gen_lock_flags(Object* ob, int defbase_tot)
1164 {
1165         char is_locked = FALSE;
1166         int i;
1167         //int defbase_tot = BLI_countlist(&ob->defbase);
1168         char *lock_flags = MEM_mallocN(defbase_tot*sizeof(char), "defflags");
1169         bDeformGroup *defgroup;
1170
1171         for(i = 0, defgroup = ob->defbase.first; i < defbase_tot && defgroup; defgroup = defgroup->next, i++) {
1172                 lock_flags[i] = ((defgroup->flag & DG_LOCK_WEIGHT) != 0);
1173                 is_locked |= lock_flags[i];
1174         }
1175         if(is_locked){
1176                 return lock_flags;
1177         }
1178
1179         MEM_freeN(lock_flags);
1180         return NULL;
1181 }
1182
1183 static int has_locked_group_selected(int defbase_tot, char *defbase_sel, char *lock_flags)
1184 {
1185         int i;
1186         for(i = 0; i < defbase_tot; i++) {
1187                 if(defbase_sel[i] && lock_flags[i]) {
1188                         return TRUE;
1189                 }
1190         }
1191         return FALSE;
1192 }
1193
1194
1195 #if 0 /* UNUSED */
1196 static int has_unselected_unlocked_bone_group(int defbase_tot, char *defbase_sel, int selected, char *lock_flags, char *vgroup_validmap)
1197 {
1198         int i;
1199         if(defbase_tot == selected) {
1200                 return FALSE;
1201         }
1202         for(i = 0; i < defbase_tot; i++) {
1203                 if(vgroup_validmap[i] && !defbase_sel[i] && !lock_flags[i]) {
1204                         return TRUE;
1205                 }
1206         }
1207         return FALSE;
1208 }
1209 #endif
1210
1211
1212 static void multipaint_selection(MDeformVert *dvert, float change, char *defbase_sel, int defbase_tot)
1213 {
1214         int i;
1215         MDeformWeight *dw;
1216         float val;
1217         /* make sure they are all at most 1 after the change */
1218         for(i = 0; i < defbase_tot; i++) {
1219                 if(defbase_sel[i]) {
1220                         dw = defvert_find_index(dvert, i);
1221                         if(dw && dw->weight) {
1222                                 val = dw->weight * change;
1223                                 if(val > 1) {
1224                                         /* TODO: when the change is reduced, you need to recheck
1225                                          * the earlier values to make sure they are not 0
1226                                          * (precision error) */
1227                                         change = 1.0f/dw->weight;
1228                                 }
1229                                 /* the value should never reach zero while multi-painting if it
1230                                  * was nonzero beforehand */
1231                                 if(val <= 0) {
1232                                         return;
1233                                 }
1234                         }
1235                 }
1236         }
1237         /* apply the valid change */
1238         for(i = 0; i < defbase_tot; i++) {
1239                 if(defbase_sel[i]) {
1240                         dw = defvert_find_index(dvert, i);
1241                         if(dw && dw->weight) {
1242                                 dw->weight = dw->weight * change;
1243                         }
1244                 }
1245         }
1246 }
1247
1248 /* move all change onto valid, unchanged groups.  If there is change left over,
1249  * then return it.
1250  * assumes there are valid groups to shift weight onto */
1251 static float redistribute_change(MDeformVert *ndv, char *change_status, int changeme, int changeto, float totchange, float total_valid, char do_auto_normalize)
1252 {
1253         float was_change;
1254         float change;
1255         float oldval;
1256         MDeformWeight *ndw;
1257         int i;
1258         do {
1259                 /* assume there is no change until you see one */
1260                 was_change = FALSE;
1261                 /* change each group by the same amount each time */
1262                 change = totchange/total_valid;
1263                 for(i = 0; i < ndv->totweight && total_valid && totchange; i++) {
1264                         ndw = (ndv->dw+i);
1265                         /* change only the groups with a valid status */
1266                         if(change_status[ndw->def_nr] == changeme) {
1267                                 oldval = ndw->weight;
1268                                 /* if auto normalize is active, don't worry about upper bounds */
1269                                 if(do_auto_normalize == FALSE && ndw->weight + change > 1) {
1270                                         totchange -= 1-ndw->weight;
1271                                         ndw->weight = 1;
1272                                         /* stop the changes to this group */
1273                                         change_status[ndw->def_nr] = changeto;
1274                                         total_valid--;
1275                                 }
1276                                 else if(ndw->weight + change < 0) { /* check the lower bound */
1277                                         totchange -= ndw->weight;
1278                                         ndw->weight = 0;
1279                                         change_status[ndw->def_nr] = changeto;
1280                                         total_valid--;
1281                                 }
1282                                 else {/* a perfectly valid change occurred to ndw->weight */
1283                                         totchange -= change;
1284                                         ndw->weight += change;
1285                                 }
1286                                 /* see if there was a change */
1287                                 if(oldval != ndw->weight) {
1288                                         was_change = TRUE;
1289                                 }
1290                         }
1291                 }
1292                 /* don't go again if there was no change, if there is no valid group,
1293                  * or there is no change left */
1294         } while(was_change && total_valid && totchange);
1295         /* left overs */
1296         return totchange;
1297 }
1298
1299 /* observe the changes made to the weights of groups.
1300  * make sure all locked groups on the vertex have the same deformation
1301  * by moving the changes made to groups onto other unlocked groups */
1302 static void enforce_locks(MDeformVert *odv, MDeformVert *ndv, int defbase_tot,
1303                           const char *lock_flags, const char *vgroup_validmap, char do_auto_normalize)
1304 {
1305         float totchange = 0.0f;
1306         float totchange_allowed = 0.0f;
1307         float left_over;
1308
1309         int total_valid = 0;
1310         int total_changed = 0;
1311         unsigned int i;
1312         MDeformWeight *ndw;
1313         MDeformWeight *odw;
1314         MDeformWeight *ndw2;
1315         MDeformWeight *odw2;
1316         int designatedw = -1;
1317         int designatedw_changed = FALSE;
1318         float storedw;
1319         char *change_status;
1320         char new_weight_has_zero = FALSE;
1321
1322         if(!lock_flags || !has_locked_group(ndv, lock_flags)) {
1323                 return;
1324         }
1325         /* record if a group was changed, unlocked and not changed, or locked */
1326         change_status = MEM_callocN(sizeof(char)*defbase_tot, "unlocked_unchanged");
1327
1328         for(i = 0; i < defbase_tot; i++) {
1329                 ndw = defvert_find_index(ndv, i);
1330                 odw = defvert_find_index(odv, i);
1331                 /* the weights are zero, so we can assume a lot */
1332                 if(!ndw || !odw) {
1333                         if (!lock_flags[i] && vgroup_validmap[i]){
1334                                 defvert_verify_index(odv, i);
1335                                 defvert_verify_index(ndv, i);
1336                                 total_valid++;
1337                                 change_status[i] = 1; /* can be altered while redistributing */
1338                         }
1339                         continue;
1340                 }
1341                 /* locked groups should not be changed */
1342                 if(lock_flags[i]) {
1343                         ndw->weight = odw->weight;
1344                 }
1345                 else if(ndw->weight != odw->weight) { /* changed groups are handled here */
1346                         totchange += ndw->weight - odw->weight;
1347                         change_status[i] = 2; /* was altered already */
1348                         total_changed++;
1349                         if(ndw->weight == 0) {
1350                                 new_weight_has_zero = TRUE;
1351                         }
1352                         else if(designatedw == -1){
1353                                 designatedw = i;
1354                         }
1355                 } /* unchanged, unlocked bone groups are handled here */
1356                 else if (vgroup_validmap[i]){
1357                         totchange_allowed += ndw->weight;
1358                         total_valid++;
1359                         change_status[i] = 1; /* can be altered while redistributing */
1360                 }
1361         }
1362         /* if there was any change, redistribute it */
1363         if(total_changed) {
1364                 /* auto normalize will allow weights to temporarily go above 1 in redistribution */
1365                 if(vgroup_validmap && total_changed < 0 && total_valid) {
1366                         totchange_allowed = total_valid;
1367                 }
1368                 /* there needs to be change allowed, or you should not bother */
1369                 if(totchange_allowed) {
1370                         /* the way you modify the unlocked+unchanged groups is different depending
1371                          * on whether or not you are painting the weight(s) up or down */
1372                         if(totchange < 0) {
1373                                 totchange_allowed = total_valid - totchange_allowed;
1374                         }
1375                         else {
1376                                 totchange_allowed *= -1;
1377                         }
1378                         left_over = 0;
1379                         if(fabsf(totchange_allowed) < fabsf(totchange)) {
1380                                 /* this amount goes back onto the changed, unlocked weights */
1381                                 left_over = fabsf(fabsf(totchange) - fabsf(totchange_allowed));
1382                                 if(totchange > 0) {
1383                                         left_over *= -1;
1384                                 }
1385                         }
1386                         else {
1387                                 /* all of the change will be permitted */
1388                                 totchange_allowed = -totchange;
1389                         }
1390                         /* move the weight evenly between the allowed groups, move excess back onto the used groups based on the change */
1391                         totchange_allowed = redistribute_change(ndv, change_status, 1, -1, totchange_allowed, total_valid, do_auto_normalize);
1392                         left_over += totchange_allowed;
1393                         if(left_over) {
1394                                 /* more than one nonzero weights were changed with the same ratio, so keep them changed that way! */
1395                                 if(total_changed > 1 && !new_weight_has_zero && designatedw >= 0) {
1396                                         /* this dw is special, it is used as a base to determine how to change the others */
1397                                         ndw = defvert_find_index(ndv, designatedw);
1398                                         odw = defvert_find_index(odv, designatedw);
1399                                         storedw = ndw->weight;
1400                                         for(i = 0; i < ndv->totweight; i++) {
1401                                                 if(change_status[ndw->def_nr] == 2) {
1402                                                         odw2 = &odv->dw[i];
1403                                                         ndw2 = &ndv->dw[i];
1404                                                         if(!designatedw_changed) {
1405                                                                 ndw->weight = (totchange_allowed + odw->weight + odw2->weight)/(1.0f + ndw2->weight/ndw->weight);
1406                                                                 designatedw_changed = TRUE;
1407                                                         }
1408                                                         ndw2->weight = ndw->weight * ndw2->weight / storedw;
1409                                                 }
1410                                         }
1411                                 }
1412                                 /* a weight was changed to zero, only one weight was changed,
1413                                  * or designatedw is still -1 put weight back as evenly as possible */
1414                                 else {
1415                                         redistribute_change(ndv, change_status, 2, -2, left_over, total_changed, do_auto_normalize);
1416                                 }
1417                         }
1418                 }
1419                 else {
1420                         /* reset the weights */
1421                         unsigned int i;
1422                         MDeformWeight *dw_old= odv->dw;
1423                         MDeformWeight *dw_new= ndv->dw;
1424
1425                         for (i= odv->totweight; i != 0; i--, dw_old++, dw_new++) {
1426                                 dw_new->weight= dw_old->weight;
1427                         }
1428                 }
1429         }
1430
1431         MEM_freeN(change_status);
1432 }
1433
1434 /* multi-paint's initial, potential change is computed here based on the user's stroke */
1435 static float get_mp_change(MDeformVert *odv, char *defbase_sel, float brush_change)
1436 {
1437         float selwsum = 0.0f;
1438         unsigned int i;
1439         MDeformWeight *dw= odv->dw;
1440
1441         for (i= odv->totweight; i != 0; i--, dw++) {
1442                 if(defbase_sel[dw->def_nr]) {
1443                         selwsum += dw->weight;
1444                 }
1445         }
1446         if(selwsum && selwsum+brush_change > 0) {
1447                 return (selwsum+brush_change)/selwsum;
1448         }
1449         return 0.0f;
1450 }
1451
1452 /* change the weights back to the wv's weights
1453  * it assumes you already have the correct pointer index */
1454 static void reset_to_prev(MDeformVert *wv, MDeformVert *dvert)
1455 {
1456         MDeformWeight *dw= dvert->dw;
1457         MDeformWeight *w;
1458         unsigned int i;
1459         for (i= dvert->totweight; i != 0; i--, dw++) {
1460                 w= defvert_find_index(wv, dw->def_nr);
1461                 /* if there was no w when there is a d, then the old weight was 0 */
1462                 dw->weight = w ? w->weight : 0.0f;
1463         }
1464 }
1465
1466 static void clamp_weights(MDeformVert *dvert)
1467 {
1468         MDeformWeight *dw= dvert->dw;
1469         unsigned int i;
1470         for (i= dvert->totweight; i != 0; i--, dw++) {
1471                 CLAMP(dw->weight, 0.0f, 1.0f);
1472         }
1473 }
1474
1475 /* struct to avoid passing many args each call to do_weight_paint_vertex()
1476  * this _could_ be made a part of the operators 'WPaintData' struct, or at
1477  * least a member, but for now keep its own struct, initialized on every
1478  * paint stroke update - campbell */
1479 typedef struct WeightPaintInfo {
1480
1481         int defbase_tot;
1482
1483         /* both must add up to 'defbase_tot' */
1484         int defbase_tot_sel;
1485         int defbase_tot_unsel;
1486
1487         int vgroup_mirror; /* mirror group or -1 */
1488
1489         char *lock_flags;  /* boolean array for locked bones,
1490                                                 * length of defbase_tot */
1491         char *defbase_sel; /* boolean array for selected bones,
1492                                                 * length of defbase_tot */
1493
1494         char *vgroup_validmap; /* same as WeightPaintData.vgroup_validmap,
1495                                 * only added here for convenience */
1496
1497         char do_flip;
1498         char do_multipaint;
1499         char do_auto_normalize;
1500 } WeightPaintInfo;
1501
1502 /* fresh start to make multi-paint and locking modular */
1503 /* returns TRUE if it thinks you need to reset the weights due to
1504  * normalizing while multi-painting */
1505 static int apply_mp_locks_normalize(Mesh *me, const WeightPaintInfo *wpi,
1506                                     const unsigned int index,
1507                                     MDeformWeight *dw, MDeformWeight *tdw,
1508                                     float change, float oldChange,
1509                                     float oldw, float neww)
1510 {
1511         MDeformVert *dv= &me->dvert[index];
1512         MDeformVert dv_test= {NULL};
1513
1514         dv_test.dw= MEM_dupallocN(dv->dw);
1515         dv_test.flag = dv->flag;
1516         dv_test.totweight = dv->totweight;
1517         /* do not multi-paint if a locked group is selected or the active group is locked
1518          * !lock_flags[dw->def_nr] helps if nothing is selected, but active group is locked */
1519         if(             (wpi->lock_flags == NULL) ||
1520                 ((wpi->lock_flags[dw->def_nr] == FALSE) &&
1521                  has_locked_group_selected(wpi->defbase_tot, wpi->defbase_sel, wpi->lock_flags) == FALSE))
1522         {
1523                 if(wpi->do_multipaint && wpi->defbase_tot_sel > 1) {
1524                         if(change && change!=1) {
1525                                 multipaint_selection(dv, change, wpi->defbase_sel, wpi->defbase_tot);
1526                         }
1527                 }
1528                 else { /* this lets users paint normally, but don't let them paint locked groups */
1529                         dw->weight = neww;
1530                 }
1531         }
1532         clamp_weights(dv);
1533
1534         enforce_locks(&dv_test, dv, wpi->defbase_tot, wpi->lock_flags, wpi->vgroup_validmap, wpi->do_auto_normalize);
1535
1536         do_weight_paint_auto_normalize_all_groups(dv, wpi->vgroup_validmap, wpi->do_auto_normalize);
1537
1538         if(oldChange && wpi->do_multipaint && wpi->defbase_tot_sel > 1) {
1539                 if(tdw->weight != oldw) {
1540                         if(neww > oldw) {
1541                                 if(tdw->weight <= oldw) {
1542                                         MEM_freeN(dv_test.dw);
1543                                         return TRUE;
1544                                 }
1545                         }
1546                         else {
1547                                 if(tdw->weight >= oldw) {
1548                                         MEM_freeN(dv_test.dw);
1549                                         return TRUE;
1550                                 }
1551                         }
1552                 }
1553         }
1554         MEM_freeN(dv_test.dw);
1555         return FALSE;
1556 }
1557
1558 /* within the current dvert index, get the dw that is selected and has a weight
1559  * above 0, this helps multi-paint */
1560 static int get_first_selected_nonzero_weight(MDeformVert *dvert, char *defbase_sel)
1561 {
1562         int i;
1563         MDeformWeight *dw= dvert->dw;
1564         for(i=0; i< dvert->totweight; i++, dw++) {
1565                 if(defbase_sel[dw->def_nr] && dw->weight > 0.0f) {
1566                         return i;
1567                 }
1568         }
1569         return -1;
1570 }
1571
1572
1573 static char *wpaint_make_validmap(Object *ob);
1574
1575
1576 static void do_weight_paint_vertex( /* vars which remain the same for every vert */
1577                                    VPaint *wp, Object *ob, const WeightPaintInfo *wpi,
1578                                     /* vars which change on each stroke */
1579                                    const unsigned int index, float alpha, float paintweight
1580                                    )
1581 {
1582         Mesh *me= ob->data;
1583
1584         MDeformWeight *dw, *uw;
1585         int vgroup= ob->actdef-1;
1586
1587         if(wp->flag & VP_ONLYVGROUP) {
1588                 dw= defvert_find_index(&me->dvert[index], vgroup);
1589                 uw= defvert_find_index(wp->wpaint_prev+index, vgroup);
1590         }
1591         else {
1592                 dw= defvert_verify_index(&me->dvert[index], vgroup);
1593                 uw= defvert_verify_index(wp->wpaint_prev+index, vgroup);
1594         }
1595         if(dw==NULL || uw==NULL)
1596                 return;
1597
1598         /* TODO: De-duplicate the simple weight paint - jason */
1599         /* ... or not, since its <10 SLOC - campbell */
1600
1601         /* If there are no locks or multipaint,
1602          * then there is no need to run the more complicated checks */
1603         if(             (wpi->do_multipaint == FALSE || wpi->defbase_tot_sel <= 1) &&
1604                 (wpi->lock_flags == NULL || has_locked_group(&me->dvert[index], wpi->lock_flags) == FALSE))
1605         {
1606                 wpaint_blend(wp, dw, uw, alpha, paintweight, wpi->do_flip, FALSE);
1607                 do_weight_paint_auto_normalize_all_groups(&me->dvert[index], wpi->vgroup_validmap, wpi->do_auto_normalize);
1608
1609                 if(me->editflag & ME_EDIT_MIRROR_X) {   /* x mirror painting */
1610                         int j= mesh_get_x_mirror_vert(ob, index);
1611                         if(j>=0) {
1612                                 /* copy, not paint again */
1613                                 uw= defvert_verify_index(me->dvert+j, (wpi->vgroup_mirror != -1) ? wpi->vgroup_mirror : vgroup);
1614
1615                                 uw->weight= dw->weight;
1616
1617                                 do_weight_paint_auto_normalize_all_groups(me->dvert+j, wpi->vgroup_validmap, wpi->do_auto_normalize);
1618                         }
1619                 }
1620         }
1621         else {
1622                 /* use locks and/or multipaint */
1623                 float oldw;
1624                 float neww;
1625                 float testw=0;
1626                 float change = 0;
1627                 float oldChange = 0;
1628                 int i;
1629                 MDeformWeight *tdw = NULL, *tuw;
1630                 MDeformVert dv= {NULL};
1631
1632                 oldw = dw->weight;
1633                 wpaint_blend(wp, dw, uw, alpha, paintweight, wpi->do_flip, wpi->do_multipaint && wpi->defbase_tot_sel >1);
1634                 neww = dw->weight;
1635                 dw->weight = oldw;
1636
1637                 /* setup multi-paint */
1638                 if(wpi->defbase_tot_sel > 1 && wpi->do_multipaint) {
1639                         dv.dw= MEM_dupallocN(me->dvert[index].dw);
1640                         dv.flag = me->dvert[index].flag;
1641                         dv.totweight = me->dvert[index].totweight;
1642                         tdw = dw;
1643                         tuw = uw;
1644                         change = get_mp_change(wp->wpaint_prev+index, wpi->defbase_sel, neww - oldw);
1645                         if(change) {
1646                                 if(!tdw->weight) {
1647                                         i = get_first_selected_nonzero_weight(&me->dvert[index], wpi->defbase_sel);
1648                                         if(i>=0) {
1649                                                 tdw = &(me->dvert[index].dw[i]);
1650                                                 tuw = defvert_verify_index(wp->wpaint_prev+index, tdw->def_nr);
1651                                         }
1652                                         else {
1653                                                 change = 0;
1654                                         }
1655                                 }
1656                                 if(change && tuw->weight && tuw->weight * change) {
1657                                         if(tdw->weight != tuw->weight) {
1658                                                 oldChange = tdw->weight/tuw->weight;
1659                                                 testw = tuw->weight*change;
1660                                                 if( testw > tuw->weight ) {
1661                                                         if(change > oldChange) {
1662                                                                 /* reset the weights and use the new change */
1663                                                                 reset_to_prev(wp->wpaint_prev+index, &me->dvert[index]);
1664                                                         }
1665                                                         else {
1666                                                                 /* the old change was more significant, so set
1667                                                                  * the change to 0 so that it will not do another multi-paint */
1668                                                                 change = 0;
1669                                                         }
1670                                                 }
1671                                                 else {
1672                                                         if(change < oldChange) {
1673                                                                 reset_to_prev(wp->wpaint_prev+index, &me->dvert[index]);
1674                                                         }
1675                                                         else {
1676                                                                 change = 0;
1677                                                         }
1678                                                 }
1679                                         }
1680                                 }
1681                                 else {
1682                                         change = 0;
1683                                 }
1684                         }
1685                 }
1686
1687                 if(apply_mp_locks_normalize(me, wpi, index, dw, tdw, change, oldChange, oldw, neww)) {
1688                         reset_to_prev(&dv, &me->dvert[index]);
1689                         change = 0;
1690                         oldChange = 0;
1691                 }
1692                 if(dv.dw) {
1693                         MEM_freeN(dv.dw);
1694                 }
1695                 /* dvert may have been altered greatly */
1696                 dw = defvert_find_index(&me->dvert[index], vgroup);
1697
1698                 if(me->editflag & ME_EDIT_MIRROR_X) {   /* x mirror painting */
1699                         int j= mesh_get_x_mirror_vert(ob, index);
1700                         if(j>=0) {
1701                                 /* copy, not paint again */
1702                                 uw= defvert_verify_index(me->dvert+j, (wpi->vgroup_mirror != -1) ? wpi->vgroup_mirror : vgroup);
1703
1704                                 //uw->weight= dw->weight;
1705
1706                                 apply_mp_locks_normalize(me, wpi, j, uw, tdw, change, oldChange, oldw, neww);
1707                         }
1708                 }
1709         }
1710 }
1711
1712
1713 /* *************** set wpaint operator ****************** */
1714
1715 static int set_wpaint(bContext *C, wmOperator *UNUSED(op))              /* toggle */
1716 {
1717         Object *ob= CTX_data_active_object(C);
1718         Scene *scene= CTX_data_scene(C);
1719         VPaint *wp= scene->toolsettings->wpaint;
1720         Mesh *me;
1721
1722         me= get_mesh(ob);
1723         if(ob->id.lib || me==NULL) return OPERATOR_PASS_THROUGH;
1724
1725         if(ob->mode & OB_MODE_WEIGHT_PAINT) ob->mode &= ~OB_MODE_WEIGHT_PAINT;
1726         else ob->mode |= OB_MODE_WEIGHT_PAINT;
1727
1728
1729         /* Weightpaint works by overriding colors in mesh,
1730                 * so need to make sure we recalc on enter and
1731                 * exit (exit needs doing regardless because we
1732                                 * should redeform).
1733                 */
1734         DAG_id_tag_update(&me->id, 0);
1735
1736         if(ob->mode & OB_MODE_WEIGHT_PAINT) {
1737                 Object *par;
1738
1739                 if(wp==NULL)
1740                         wp= scene->toolsettings->wpaint= new_vpaint(1);
1741
1742                 paint_init(&wp->paint, PAINT_CURSOR_WEIGHT_PAINT);
1743                 paint_cursor_start(C, weight_paint_poll);
1744
1745                 mesh_octree_table(ob, NULL, NULL, 's');
1746
1747                 /* verify if active weight group is also active bone */
1748                 par= modifiers_isDeformedByArmature(ob);
1749                 if(par && (par->mode & OB_MODE_POSE)) {
1750                         bArmature *arm= par->data;
1751
1752                         if(arm->act_bone)
1753                                 ED_vgroup_select_by_name(ob, arm->act_bone->name);
1754                 }
1755         }
1756         else {
1757                 mesh_octree_table(NULL, NULL, NULL, 'e');
1758                 mesh_mirrtopo_table(NULL, 'e');
1759         }
1760
1761         WM_event_add_notifier(C, NC_SCENE|ND_MODE, scene);
1762
1763         return OPERATOR_FINISHED;
1764 }
1765
1766 /* for switching to/from mode */
1767 static int paint_poll_test(bContext *C)
1768 {
1769         if(CTX_data_edit_object(C))
1770                 return 0;
1771         if(CTX_data_active_object(C)==NULL)
1772                 return 0;
1773         return 1;
1774 }
1775
1776 void PAINT_OT_weight_paint_toggle(wmOperatorType *ot)
1777 {
1778
1779         /* identifiers */
1780         ot->name= "Weight Paint Mode";
1781         ot->idname= "PAINT_OT_weight_paint_toggle";
1782
1783         /* api callbacks */
1784         ot->exec= set_wpaint;
1785         ot->poll= paint_poll_test;
1786
1787         /* flags */
1788         ot->flag= OPTYPE_REGISTER|OPTYPE_UNDO;
1789
1790 }
1791
1792 /* ************ weight paint operator ********** */
1793
1794 struct WPaintData {
1795         ViewContext vc;
1796         int *indexar;
1797         int vgroup_mirror;
1798         float *vertexcosnos;
1799         float wpimat[3][3];
1800
1801         /*variables for auto normalize*/
1802         int auto_normalize;
1803         char *vgroup_validmap; /*stores if vgroups tie to deforming bones or not*/
1804         char *lock_flags;
1805         int defbase_tot;
1806 };
1807
1808 static char *wpaint_make_validmap(Object *ob)
1809 {
1810         bDeformGroup *dg;
1811         ModifierData *md;
1812         char *vgroup_validmap;
1813         GHash *gh = BLI_ghash_new(BLI_ghashutil_strhash, BLI_ghashutil_strcmp, "wpaint_make_validmap gh");
1814         int i = 0, step1=1;
1815
1816         /*add all names to a hash table*/
1817         for (dg=ob->defbase.first, i=0; dg; dg=dg->next, i++) {
1818                 BLI_ghash_insert(gh, dg->name, NULL);
1819         }
1820
1821         if (!i)
1822                 return NULL;
1823
1824         vgroup_validmap= MEM_callocN(i, "wpaint valid map");
1825
1826         /*now loop through the armature modifiers and identify deform bones*/
1827         for (md = ob->modifiers.first; md; md= !md->next && step1 ? (step1=0), modifiers_getVirtualModifierList(ob) : md->next) {
1828                 if (!(md->mode & (eModifierMode_Realtime|eModifierMode_Virtual)))
1829                         continue;
1830
1831                 if (md->type == eModifierType_Armature)
1832                 {
1833                         ArmatureModifierData *amd= (ArmatureModifierData*) md;
1834
1835                         if(amd->object && amd->object->pose) {
1836                                 bPose *pose= amd->object->pose;
1837                                 bPoseChannel *chan;
1838
1839                                 for (chan=pose->chanbase.first; chan; chan=chan->next) {
1840                                         if (chan->bone->flag & BONE_NO_DEFORM)
1841                                                 continue;
1842
1843                                         if (BLI_ghash_haskey(gh, chan->name)) {
1844                                                 BLI_ghash_remove(gh, chan->name, NULL, NULL);
1845                                                 BLI_ghash_insert(gh, chan->name, SET_INT_IN_POINTER(1));
1846                                         }
1847                                 }
1848                         }
1849                 }
1850         }
1851
1852         /*add all names to a hash table*/
1853         for (dg=ob->defbase.first, i=0; dg; dg=dg->next, i++) {
1854                 if (BLI_ghash_lookup(gh, dg->name) != NULL) {
1855                         vgroup_validmap[i] = TRUE;
1856                 }
1857         }
1858
1859         BLI_ghash_free(gh, NULL, NULL);
1860
1861         return vgroup_validmap;
1862 }
1863
1864 static int wpaint_stroke_test_start(bContext *C, wmOperator *op, wmEvent *UNUSED(event))
1865 {
1866         Scene *scene= CTX_data_scene(C);
1867         struct PaintStroke *stroke = op->customdata;
1868         ToolSettings *ts= CTX_data_tool_settings(C);
1869         VPaint *wp= ts->wpaint;
1870         Object *ob= CTX_data_active_object(C);
1871         struct WPaintData *wpd;
1872         Mesh *me;
1873         float mat[4][4], imat[4][4];
1874
1875         if(scene->obedit) return OPERATOR_CANCELLED;
1876
1877         me= get_mesh(ob);
1878         if(me==NULL || me->totface==0) return OPERATOR_PASS_THROUGH;
1879
1880         /* if nothing was added yet, we make dverts and a vertex deform group */
1881         if (!me->dvert) {
1882                 ED_vgroup_data_create(&me->id);
1883                 WM_event_add_notifier(C, NC_GEOM|ND_DATA, me);
1884         }
1885
1886         /* make mode data storage */
1887         wpd= MEM_callocN(sizeof(struct WPaintData), "WPaintData");
1888         paint_stroke_set_mode_data(stroke, wpd);
1889         view3d_set_viewcontext(C, &wpd->vc);
1890         wpd->vgroup_mirror= -1;
1891
1892         /*set up auto-normalize, and generate map for detecting which
1893           vgroups affect deform bones*/
1894         wpd->auto_normalize = ts->auto_normalize;
1895         wpd->defbase_tot = BLI_countlist(&ob->defbase);
1896         wpd->lock_flags = gen_lock_flags(ob, wpd->defbase_tot);
1897         if (wpd->auto_normalize || ts->multipaint || wpd->lock_flags)
1898                 wpd->vgroup_validmap = wpaint_make_validmap(ob);
1899
1900         //      if(qual & LR_CTRLKEY) {
1901         //              sample_wpaint(scene, ar, v3d, 0);
1902         //              return;
1903         //      }
1904         //      if(qual & LR_SHIFTKEY) {
1905         //              sample_wpaint(scene, ar, v3d, 1);
1906         //              return;
1907         //      }
1908
1909         /* ALLOCATIONS! no return after this line */
1910         /* painting on subsurfs should give correct points too, this returns me->totvert amount */
1911         wpd->vertexcosnos= mesh_get_mapped_verts_nors(scene, ob);
1912         wpd->indexar= get_indexarray(me);
1913         copy_wpaint_prev(wp, me->dvert, me->totvert);
1914
1915         /* this happens on a Bone select, when no vgroup existed yet */
1916         if(ob->actdef<=0) {
1917                 Object *modob;
1918                 if((modob = modifiers_isDeformedByArmature(ob))) {
1919                         Bone *actbone= ((bArmature *)modob->data)->act_bone;
1920                         if(actbone) {
1921                                 bPoseChannel *pchan= get_pose_channel(modob->pose, actbone->name);
1922
1923                                 if(pchan) {
1924                                         bDeformGroup *dg= defgroup_find_name(ob, pchan->name);
1925                                         if(dg==NULL)
1926                                                 dg= ED_vgroup_add_name(ob, pchan->name);        /* sets actdef */
1927                                         else
1928                                                 ob->actdef= 1 + defgroup_find_index(ob, dg);
1929                                 }
1930                         }
1931                 }
1932         }
1933         if(ob->defbase.first==NULL) {
1934                 ED_vgroup_add(ob);
1935         }
1936
1937         //      if(ob->lay & v3d->lay); else error("Active object is not in this layer");
1938
1939         /* imat for normals */
1940         mul_m4_m4m4(mat, ob->obmat, wpd->vc.rv3d->viewmat);
1941         invert_m4_m4(imat, mat);
1942         copy_m3_m4(wpd->wpimat, imat);
1943
1944         /* if mirror painting, find the other group */
1945         if(me->editflag & ME_EDIT_MIRROR_X) {
1946                 wpaint_mirror_vgroup_ensure(ob, &wpd->vgroup_mirror);
1947         }
1948
1949         return 1;
1950 }
1951
1952 static void wpaint_stroke_update_step(bContext *C, struct PaintStroke *stroke, PointerRNA *itemptr)
1953 {
1954         ToolSettings *ts= CTX_data_tool_settings(C);
1955         VPaint *wp= ts->wpaint;
1956         Brush *brush = paint_brush(&wp->paint);
1957         struct WPaintData *wpd= paint_stroke_mode_data(stroke);
1958         ViewContext *vc;
1959         Object *ob;
1960         Mesh *me;
1961         float mat[4][4];
1962         float paintweight;
1963         int *indexar;
1964         int totw;
1965         unsigned int index, totindex;
1966         float alpha;
1967         float mval[2], pressure;
1968         int use_vert_sel;
1969
1970         /* intentionally dont initialize as NULL, make sure we initialize all members below */
1971         WeightPaintInfo wpi;
1972
1973         /* cannot paint if there is no stroke data */
1974         if (wpd == NULL) {
1975                 /* XXX: force a redraw here, since even though we can't paint,
1976                  * at least view won't freeze until stroke ends */
1977                 ED_region_tag_redraw(CTX_wm_region(C));
1978                 return;
1979         }
1980
1981         vc= &wpd->vc;
1982         ob= vc->obact;
1983         me= ob->data;
1984         indexar= wpd->indexar;
1985
1986         view3d_operator_needs_opengl(C);
1987
1988         /* load projection matrix */
1989         mul_m4_m4m4(mat, ob->obmat, vc->rv3d->persmat);
1990
1991         pressure = RNA_float_get(itemptr, "pressure");
1992         RNA_float_get_array(itemptr, "mouse", mval);
1993         mval[0]-= vc->ar->winrct.xmin;
1994         mval[1]-= vc->ar->winrct.ymin;
1995
1996
1997
1998         /* *** setup WeightPaintInfo - pass onto do_weight_paint_vertex *** */
1999         wpi.defbase_tot=        wpd->defbase_tot;
2000         wpi.defbase_sel=        MEM_mallocN(wpi.defbase_tot*sizeof(char), "wpi.defbase_sel");
2001         wpi.defbase_tot_sel=    get_selected_defgroups(ob, wpi.defbase_sel, wpi.defbase_tot);
2002         if(wpi.defbase_tot_sel == 0 && ob->actdef) wpi.defbase_tot_sel = 1;
2003         wpi.defbase_tot_unsel=  wpi.defbase_tot - wpi.defbase_tot_sel;
2004         wpi.vgroup_mirror=      wpd->vgroup_mirror;
2005         wpi.lock_flags=         wpd->lock_flags;
2006         wpi.vgroup_validmap=    wpd->vgroup_validmap;
2007         wpi.do_flip=            RNA_boolean_get(itemptr, "pen_flip");
2008         wpi.do_multipaint=      (ts->multipaint != 0);
2009         wpi.do_auto_normalize=  (ts->auto_normalize != 0);
2010         /* *** done setting up WeightPaintInfo *** */
2011
2012
2013
2014         swap_m4m4(wpd->vc.rv3d->persmat, mat);
2015
2016         use_vert_sel= (me->editflag & ME_EDIT_VERT_SEL) != 0;
2017
2018         /* which faces are involved */
2019         if(wp->flag & VP_AREA) {
2020                 /* Ugly hack, to avoid drawing vertex index when getting the face index buffer - campbell */
2021                 me->editflag &= ~ME_EDIT_VERT_SEL;
2022                 totindex= sample_backbuf_area(vc, indexar, me->totface, mval[0], mval[1], brush_size(brush));
2023                 me->editflag |= use_vert_sel ? ME_EDIT_VERT_SEL : 0;
2024         }
2025         else {
2026                 indexar[0]= view3d_sample_backbuf(vc, mval[0], mval[1]);
2027                 if(indexar[0]) totindex= 1;
2028                 else totindex= 0;
2029         }
2030
2031         if(wp->flag & VP_COLINDEX) {
2032                 for(index=0; index<totindex; index++) {
2033                         if(indexar[index] && indexar[index]<=me->totface) {
2034                                 MFace *mface= ((MFace *)me->mface) + (indexar[index]-1);
2035
2036                                 if(mface->mat_nr!=ob->actcol-1) {
2037                                         indexar[index]= 0;
2038                                 }
2039                         }
2040                 }
2041         }
2042
2043         if((me->editflag & ME_EDIT_PAINT_MASK) && me->mface) {
2044                 for(index=0; index<totindex; index++) {
2045                         if(indexar[index] && indexar[index]<=me->totface) {
2046                                 MFace *mface= ((MFace *)me->mface) + (indexar[index]-1);
2047
2048                                 if((mface->flag & ME_FACE_SEL)==0) {
2049                                         indexar[index]= 0;
2050                                 }
2051                         }
2052                 }
2053         }
2054
2055         /* make sure each vertex gets treated only once */
2056         /* and calculate filter weight */
2057         totw= 0;
2058         if(brush->vertexpaint_tool==VP_BLUR)
2059                 paintweight= 0.0f;
2060         else
2061                 paintweight= ts->vgroup_weight;
2062
2063         for(index=0; index<totindex; index++) {
2064                 if(indexar[index] && indexar[index]<=me->totface) {
2065                         MFace *mface= me->mface + (indexar[index]-1);
2066
2067                         if(use_vert_sel) {
2068                                 me->dvert[mface->v1].flag = (me->mvert[mface->v1].flag & SELECT);
2069                                 me->dvert[mface->v2].flag = (me->mvert[mface->v2].flag & SELECT);
2070                                 me->dvert[mface->v3].flag = (me->mvert[mface->v3].flag & SELECT);
2071                                 if(mface->v4) me->dvert[mface->v4].flag = (me->mvert[mface->v4].flag & SELECT);
2072                         }
2073                         else {
2074                                 me->dvert[mface->v1].flag= 1;
2075                                 me->dvert[mface->v2].flag= 1;
2076                                 me->dvert[mface->v3].flag= 1;
2077                                 if(mface->v4) me->dvert[mface->v4].flag= 1;
2078                         }
2079
2080                         if(brush->vertexpaint_tool==VP_BLUR) {
2081                                 MDeformWeight *dw, *(*dw_func)(MDeformVert *, const int);
2082                                 unsigned int fidx= mface->v4 ? 3:2;
2083
2084                                 if(wp->flag & VP_ONLYVGROUP)
2085                                         dw_func= (MDeformWeight *(*)(MDeformVert *, const int))defvert_find_index;
2086                                 else
2087                                         dw_func= defvert_verify_index;
2088
2089                                 do {
2090                                         unsigned int vidx= *(&mface->v1 + fidx);
2091
2092                                         dw= dw_func(me->dvert+vidx, ob->actdef-1);
2093                                         if(dw) {
2094                                                 paintweight+= dw->weight;
2095                                                 totw++;
2096                                         }
2097
2098                                 } while (fidx--);
2099
2100                         }
2101                 }
2102         }
2103
2104         if(brush->vertexpaint_tool==VP_BLUR)
2105                 paintweight/= (float)totw;
2106
2107         for(index=0; index<totindex; index++) {
2108
2109                 if(indexar[index] && indexar[index]<=me->totface) {
2110                         MFace *mf= me->mface + (indexar[index]-1);
2111                         unsigned int fidx= mf->v4 ? 3:2;;
2112                         do {
2113                                 unsigned int vidx= *(&mf->v1 + fidx);
2114
2115                                 if(me->dvert[vidx].flag) {
2116                                         alpha= calc_vp_alpha_dl(wp, vc, wpd->wpimat, wpd->vertexcosnos+6*vidx, mval, pressure);
2117                                         if(alpha) {
2118                                                 do_weight_paint_vertex(wp, ob, &wpi, vidx, alpha, paintweight);
2119                                         }
2120                                         me->dvert[vidx].flag= 0;
2121                                 }
2122                         } while (fidx--);
2123                 }
2124         }
2125
2126
2127         /* *** free wpi members */
2128         MEM_freeN(wpi.defbase_sel);
2129         /* *** dont freeing wpi members */
2130
2131
2132         swap_m4m4(vc->rv3d->persmat, mat);
2133
2134         DAG_id_tag_update(ob->data, 0);
2135         ED_region_tag_redraw(vc->ar);
2136 }
2137
2138 static void wpaint_stroke_done(bContext *C, struct PaintStroke *stroke)
2139 {
2140         ToolSettings *ts= CTX_data_tool_settings(C);
2141         Object *ob= CTX_data_active_object(C);
2142         struct WPaintData *wpd= paint_stroke_mode_data(stroke);
2143
2144         if(wpd) {
2145                 if(wpd->vertexcosnos)
2146                         MEM_freeN(wpd->vertexcosnos);
2147                 MEM_freeN(wpd->indexar);
2148
2149                 if (wpd->vgroup_validmap)
2150                         MEM_freeN(wpd->vgroup_validmap);
2151                 if(wpd->lock_flags)
2152                         MEM_freeN(wpd->lock_flags);
2153
2154                 MEM_freeN(wpd);
2155         }
2156
2157         /* frees prev buffer */
2158         copy_wpaint_prev(ts->wpaint, NULL, 0);
2159
2160         /* and particles too */
2161         if(ob->particlesystem.first) {
2162                 ParticleSystem *psys;
2163                 int i;
2164
2165                 for(psys= ob->particlesystem.first; psys; psys= psys->next) {
2166                         for(i=0; i<PSYS_TOT_VG; i++) {
2167                                 if(psys->vgroup[i]==ob->actdef) {
2168                                         psys->recalc |= PSYS_RECALC_RESET;
2169                                         break;
2170                                 }
2171                         }
2172                 }
2173         }
2174
2175         DAG_id_tag_update(ob->data, 0);
2176 }
2177
2178
2179 static int wpaint_invoke(bContext *C, wmOperator *op, wmEvent *event)
2180 {
2181
2182         op->customdata = paint_stroke_new(C, NULL, wpaint_stroke_test_start,
2183                                           wpaint_stroke_update_step,
2184                                           wpaint_stroke_done, event->type);
2185
2186         /* add modal handler */
2187         WM_event_add_modal_handler(C, op);
2188
2189         op->type->modal(C, op, event);
2190
2191         return OPERATOR_RUNNING_MODAL;
2192 }
2193
2194 static int wpaint_cancel(bContext *C, wmOperator *op)
2195 {
2196         paint_stroke_cancel(C, op);
2197
2198         return OPERATOR_CANCELLED;
2199 }
2200
2201 void PAINT_OT_weight_paint(wmOperatorType *ot)
2202 {
2203
2204         /* identifiers */
2205         ot->name= "Weight Paint";
2206         ot->idname= "PAINT_OT_weight_paint";
2207
2208         /* api callbacks */
2209         ot->invoke= wpaint_invoke;
2210         ot->modal= paint_stroke_modal;
2211         /* ot->exec= vpaint_exec; <-- needs stroke property */
2212         ot->poll= weight_paint_poll;
2213         ot->cancel= wpaint_cancel;
2214
2215         /* flags */
2216         ot->flag= OPTYPE_REGISTER|OPTYPE_UNDO|OPTYPE_BLOCKING;
2217
2218         RNA_def_collection_runtime(ot->srna, "stroke", &RNA_OperatorStrokeElement, "Stroke", "");
2219 }
2220
2221 static int weight_paint_set_exec(bContext *C, wmOperator *UNUSED(op))
2222 {
2223         struct Scene *scene= CTX_data_scene(C);
2224         Object *obact = CTX_data_active_object(C);
2225
2226         wpaint_fill(scene->toolsettings->wpaint, obact, scene->toolsettings->vgroup_weight);
2227         ED_region_tag_redraw(CTX_wm_region(C)); /* XXX - should redraw all 3D views */
2228         return OPERATOR_FINISHED;
2229 }
2230
2231 void PAINT_OT_weight_set(wmOperatorType *ot)
2232 {
2233         /* identifiers */
2234         ot->name= "Set Weight";
2235         ot->idname= "PAINT_OT_weight_set";
2236
2237         /* api callbacks */
2238         ot->exec= weight_paint_set_exec;
2239         ot->poll= mask_paint_poll; /* it was facemask_paint_poll */
2240
2241         /* flags */
2242         ot->flag= OPTYPE_REGISTER|OPTYPE_UNDO;
2243 }
2244
2245 /* ************ set / clear vertex paint mode ********** */
2246
2247
2248 static int set_vpaint(bContext *C, wmOperator *op)              /* toggle */
2249 {
2250         Object *ob= CTX_data_active_object(C);
2251         Scene *scene= CTX_data_scene(C);
2252         VPaint *vp= scene->toolsettings->vpaint;
2253         Mesh *me;
2254
2255         me= get_mesh(ob);
2256
2257         if(me==NULL || object_data_is_libdata(ob)) {
2258                 ob->mode &= ~OB_MODE_VERTEX_PAINT;
2259                 return OPERATOR_PASS_THROUGH;
2260         }
2261
2262         if(me && me->mcol==NULL) make_vertexcol(ob);
2263
2264         /* toggle: end vpaint */
2265         if(ob->mode & OB_MODE_VERTEX_PAINT) {
2266
2267                 ob->mode &= ~OB_MODE_VERTEX_PAINT;
2268         }
2269         else {
2270                 ob->mode |= OB_MODE_VERTEX_PAINT;
2271                 /* Turn off weight painting */
2272                 if (ob->mode & OB_MODE_WEIGHT_PAINT)
2273                         set_wpaint(C, op);
2274
2275                 if(vp==NULL)
2276                         vp= scene->toolsettings->vpaint= new_vpaint(0);
2277
2278                 paint_cursor_start(C, vertex_paint_poll);
2279
2280                 paint_init(&vp->paint, PAINT_CURSOR_VERTEX_PAINT);
2281         }
2282
2283         if (me)
2284                 /* update modifier stack for mapping requirements */
2285                 DAG_id_tag_update(&me->id, 0);
2286
2287         WM_event_add_notifier(C, NC_SCENE|ND_MODE, scene);
2288
2289         return OPERATOR_FINISHED;
2290 }
2291
2292 void PAINT_OT_vertex_paint_toggle(wmOperatorType *ot)
2293 {
2294
2295         /* identifiers */
2296         ot->name= "Vertex Paint Mode";
2297         ot->idname= "PAINT_OT_vertex_paint_toggle";
2298
2299         /* api callbacks */
2300         ot->exec= set_vpaint;
2301         ot->poll= paint_poll_test;
2302
2303         /* flags */
2304         ot->flag= OPTYPE_REGISTER|OPTYPE_UNDO;
2305 }
2306
2307
2308
2309 /* ********************** vertex paint operator ******************* */
2310
2311 /* Implementation notes:
2312
2313 Operator->invoke()
2314   - validate context (add mcol)
2315   - create customdata storage
2316   - call paint once (mouse click)
2317   - add modal handler
2318
2319 Operator->modal()
2320   - for every mousemove, apply vertex paint
2321   - exit on mouse release, free customdata
2322         (return OPERATOR_FINISHED also removes handler and operator)
2323
2324 For future:
2325   - implement a stroke event (or mousemove with past positons)
2326   - revise whether op->customdata should be added in object, in set_vpaint
2327
2328 */
2329
2330 typedef struct VPaintData {
2331         ViewContext vc;
2332         unsigned int paintcol;
2333         int *indexar;
2334         float *vertexcosnos;
2335         float vpimat[3][3];
2336 } VPaintData;
2337
2338 static int vpaint_stroke_test_start(bContext *C, struct wmOperator *op, wmEvent *UNUSED(event))
2339 {
2340         ToolSettings *ts= CTX_data_tool_settings(C);
2341         struct PaintStroke *stroke = op->customdata;
2342         VPaint *vp= ts->vpaint;
2343         struct VPaintData *vpd;
2344         Object *ob= CTX_data_active_object(C);
2345         Mesh *me;
2346         float mat[4][4], imat[4][4];
2347
2348         /* context checks could be a poll() */
2349         me= get_mesh(ob);
2350         if(me==NULL || me->totface==0) return OPERATOR_PASS_THROUGH;
2351
2352         if(me->mcol==NULL) make_vertexcol(ob);
2353         if(me->mcol==NULL) return OPERATOR_CANCELLED;
2354
2355         /* make mode data storage */
2356         vpd= MEM_callocN(sizeof(struct VPaintData), "VPaintData");
2357         paint_stroke_set_mode_data(stroke, vpd);
2358         view3d_set_viewcontext(C, &vpd->vc);
2359
2360         vpd->vertexcosnos= mesh_get_mapped_verts_nors(vpd->vc.scene, ob);
2361         vpd->indexar= get_indexarray(me);
2362         vpd->paintcol= vpaint_get_current_col(vp);
2363
2364         /* for filtering */
2365         copy_vpaint_prev(vp, (unsigned int *)me->mcol, me->totface);
2366
2367         /* some old cruft to sort out later */
2368         mul_m4_m4m4(mat, ob->obmat, vpd->vc.rv3d->viewmat);
2369         invert_m4_m4(imat, mat);
2370         copy_m3_m4(vpd->vpimat, imat);
2371
2372         return 1;
2373 }
2374
2375 static void vpaint_paint_face(VPaint *vp, VPaintData *vpd, Object *ob, const unsigned int index, const float mval[2], float pressure, int UNUSED(flip))
2376 {
2377         ViewContext *vc = &vpd->vc;
2378         Brush *brush = paint_brush(&vp->paint);
2379         Mesh *me = get_mesh(ob);
2380         MFace *mface= &me->mface[index];
2381         unsigned int *mcol= ((unsigned int*)me->mcol) + 4*index;
2382         unsigned int *mcolorig= ((unsigned int*)vp->vpaint_prev) + 4*index;
2383         float alpha;
2384         int i;
2385
2386         if((vp->flag & VP_COLINDEX && mface->mat_nr!=ob->actcol-1) ||
2387            ((me->editflag & ME_EDIT_PAINT_MASK) && !(mface->flag & ME_FACE_SEL)))
2388                 return;
2389
2390         if(brush->vertexpaint_tool==VP_BLUR) {
2391                 unsigned int fcol1= mcol_blend( mcol[0], mcol[1], 128);
2392                 if(mface->v4) {
2393                         unsigned int fcol2= mcol_blend( mcol[2], mcol[3], 128);
2394                         vpd->paintcol= mcol_blend( fcol1, fcol2, 128);
2395                 }
2396                 else {
2397                         vpd->paintcol= mcol_blend( mcol[2], fcol1, 170);
2398                 }
2399
2400         }
2401
2402         for(i = 0; i < (mface->v4 ? 4 : 3); ++i) {
2403                 alpha= calc_vp_alpha_dl(vp, vc, vpd->vpimat, vpd->vertexcosnos+6*(&mface->v1)[i], mval, pressure);
2404                 if(alpha)
2405                         vpaint_blend(vp, mcol+i, mcolorig+i, vpd->paintcol, (int)(alpha*255.0f));
2406         }
2407 }
2408
2409 static void vpaint_stroke_update_step(bContext *C, struct PaintStroke *stroke, PointerRNA *itemptr)
2410 {
2411         ToolSettings *ts= CTX_data_tool_settings(C);
2412         struct VPaintData *vpd = paint_stroke_mode_data(stroke);
2413         VPaint *vp= ts->vpaint;
2414         Brush *brush = paint_brush(&vp->paint);
2415         ViewContext *vc= &vpd->vc;
2416         Object *ob= vc->obact;
2417         Mesh *me= ob->data;
2418         float mat[4][4];
2419         int *indexar= vpd->indexar;
2420         int totindex, index, flip;
2421         float pressure, mval[2];
2422
2423         RNA_float_get_array(itemptr, "mouse", mval);
2424         flip = RNA_boolean_get(itemptr, "pen_flip");
2425         pressure = RNA_float_get(itemptr, "pressure");
2426
2427         view3d_operator_needs_opengl(C);
2428
2429         /* load projection matrix */
2430         mul_m4_m4m4(mat, ob->obmat, vc->rv3d->persmat);
2431
2432         mval[0]-= vc->ar->winrct.xmin;
2433         mval[1]-= vc->ar->winrct.ymin;
2434
2435
2436         /* which faces are involved */
2437         if(vp->flag & VP_AREA) {
2438                 totindex= sample_backbuf_area(vc, indexar, me->totface, mval[0], mval[1], brush_size(brush));
2439         }
2440         else {
2441                 indexar[0]= view3d_sample_backbuf(vc, mval[0], mval[1]);
2442                 if(indexar[0]) totindex= 1;
2443                 else totindex= 0;
2444         }
2445
2446         swap_m4m4(vc->rv3d->persmat, mat);
2447
2448         for(index=0; index<totindex; index++) {
2449                 if(indexar[index] && indexar[index]<=me->totface)
2450                         vpaint_paint_face(vp, vpd, ob, indexar[index]-1, mval, pressure, flip);
2451         }
2452
2453         swap_m4m4(vc->rv3d->persmat, mat);
2454
2455         /* was disabled because it is slow, but necessary for blur */
2456         if(brush->vertexpaint_tool == VP_BLUR)
2457                 do_shared_vertexcol(me);
2458
2459         ED_region_tag_redraw(vc->ar);
2460
2461         DAG_id_tag_update(ob->data, 0);
2462 }
2463
2464 static void vpaint_stroke_done(bContext *C, struct PaintStroke *stroke)
2465 {
2466         ToolSettings *ts= CTX_data_tool_settings(C);
2467         struct VPaintData *vpd= paint_stroke_mode_data(stroke);
2468
2469         if(vpd->vertexcosnos)
2470                 MEM_freeN(vpd->vertexcosnos);
2471         MEM_freeN(vpd->indexar);
2472
2473         /* frees prev buffer */
2474         copy_vpaint_prev(ts->vpaint, NULL, 0);
2475
2476         MEM_freeN(vpd);
2477 }
2478
2479 static int vpaint_invoke(bContext *C, wmOperator *op, wmEvent *event)
2480 {
2481
2482         op->customdata = paint_stroke_new(C, NULL, vpaint_stroke_test_start,
2483                                           vpaint_stroke_update_step,
2484                                           vpaint_stroke_done, event->type);
2485
2486         /* add modal handler */
2487         WM_event_add_modal_handler(C, op);
2488
2489         op->type->modal(C, op, event);
2490
2491         return OPERATOR_RUNNING_MODAL;
2492 }
2493
2494 static int vpaint_cancel(bContext *C, wmOperator *op)
2495 {
2496         paint_stroke_cancel(C, op);
2497
2498         return OPERATOR_CANCELLED;
2499 }
2500
2501 void PAINT_OT_vertex_paint(wmOperatorType *ot)
2502 {
2503         /* identifiers */
2504         ot->name= "Vertex Paint";
2505         ot->idname= "PAINT_OT_vertex_paint";
2506
2507         /* api callbacks */
2508         ot->invoke= vpaint_invoke;
2509         ot->modal= paint_stroke_modal;
2510         /* ot->exec= vpaint_exec; <-- needs stroke property */
2511         ot->poll= vertex_paint_poll;
2512         ot->cancel= vpaint_cancel;
2513
2514         /* flags */
2515         ot->flag= OPTYPE_REGISTER|OPTYPE_UNDO|OPTYPE_BLOCKING;
2516
2517         RNA_def_collection_runtime(ot->srna, "stroke", &RNA_OperatorStrokeElement, "Stroke", "");
2518 }
2519
2520 /* ********************** weight from bones operator ******************* */
2521
2522 static int weight_from_bones_poll(bContext *C)
2523 {
2524         Object *ob= CTX_data_active_object(C);
2525
2526         return (ob && (ob->mode & OB_MODE_WEIGHT_PAINT) && modifiers_isDeformedByArmature(ob));
2527 }
2528
2529 static int weight_from_bones_exec(bContext *C, wmOperator *op)
2530 {
2531         Scene *scene= CTX_data_scene(C);
2532         Object *ob= CTX_data_active_object(C);
2533         Object *armob= modifiers_isDeformedByArmature(ob);
2534         Mesh *me= ob->data;
2535         int type= RNA_enum_get(op->ptr, "type");
2536
2537         create_vgroups_from_armature(op->reports, scene, ob, armob, type, (me->editflag & ME_EDIT_MIRROR_X));
2538
2539         DAG_id_tag_update(&me->id, 0);
2540         WM_event_add_notifier(C, NC_GEOM|ND_DATA, me);
2541
2542         return OPERATOR_FINISHED;
2543 }
2544
2545 void PAINT_OT_weight_from_bones(wmOperatorType *ot)
2546 {
2547         static EnumPropertyItem type_items[]= {
2548                 {ARM_GROUPS_AUTO, "AUTOMATIC", 0, "Automatic", "Automatic weights froms bones"},
2549                 {ARM_GROUPS_ENVELOPE, "ENVELOPES", 0, "From Envelopes", "Weights from envelopes with user defined radius"},
2550                 {0, NULL, 0, NULL, NULL}};
2551
2552         /* identifiers */
2553         ot->name= "Weight from Bones";
2554         ot->idname= "PAINT_OT_weight_from_bones";
2555
2556         /* api callbacks */
2557         ot->exec= weight_from_bones_exec;
2558         ot->invoke= WM_menu_invoke;
2559         ot->poll= weight_from_bones_poll;
2560
2561         /* flags */
2562         ot->flag= OPTYPE_REGISTER|OPTYPE_UNDO;
2563
2564         /* properties */
2565         ot->prop= RNA_def_enum(ot->srna, "type", type_items, 0, "Type", "Method to use for assigning weights");
2566 }
2567