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