source/blender/render/intern/source/convertblender.c

   1 /**
   2  * $Id$
   3  *
   4  * ***** BEGIN GPL LICENSE BLOCK *****
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public License
   8  * as published by the Free Software Foundation; either version 2
   9  * of the License, or (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software Foundation,
  18  * Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  19  *
  20  * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
  21  * All rights reserved.
  22  *
  23  * Contributors: 2004/2005/2006 Blender Foundation, full recode
  24  *
  25  * ***** END GPL LICENSE BLOCK *****
  26  */
  27
  28 #include <math.h>
  29 #include <stdlib.h>
  30 #include <stdio.h>
  31 #include <string.h>
  32 #include <limits.h>
  33
  34 #include "blendef.h"
  35 #include "MTC_matrixops.h"
  36
  37 #include "MEM_guardedalloc.h"
  38
  39 #include "BLI_arithb.h"
  40 #include "BLI_blenlib.h"
  41 #include "BLI_rand.h"
  42 #include "BLI_memarena.h"
  43 #include "BLI_ghash.h"
  44
  45 #include "DNA_armature_types.h"
  46 #include "DNA_camera_types.h"
  47 #include "DNA_material_types.h"
  48 #include "DNA_curve_types.h"
  49 #include "DNA_effect_types.h"
  50 #include "DNA_group_types.h"
  51 #include "DNA_lamp_types.h"
  52 #include "DNA_image_types.h"
  53 #include "DNA_lattice_types.h"
  54 #include "DNA_mesh_types.h"
  55 #include "DNA_meshdata_types.h"
  56 #include "DNA_meta_types.h"
  57 #include "DNA_modifier_types.h"
  58 #include "DNA_node_types.h"
  59 #include "DNA_object_types.h"
  60 #include "DNA_object_force.h"
  61 #include "DNA_object_fluidsim.h"
  62 #include "DNA_particle_types.h"
  63 #include "DNA_scene_types.h"
  64 #include "DNA_texture_types.h"
  65 #include "DNA_view3d_types.h"
  66
  67 #include "BKE_anim.h"
  68 #include "BKE_armature.h"
  69 #include "BKE_action.h"
  70 #include "BKE_curve.h"
  71 #include "BKE_customdata.h"
  72 #include "BKE_colortools.h"
  73 #include "BKE_constraint.h"
  74 #include "BKE_displist.h"
  75 #include "BKE_deform.h"
  76 #include "BKE_DerivedMesh.h"
  77 #include "BKE_effect.h"
  78 #include "BKE_global.h"
  79 #include "BKE_group.h"
  80 #include "BKE_key.h"
  81 #include "BKE_ipo.h"
  82 #include "BKE_image.h"
  83 #include "BKE_lattice.h"
  84 #include "BKE_library.h"
  85 #include "BKE_material.h"
  86 #include "BKE_main.h"
  87 #include "BKE_mball.h"
  88 #include "BKE_mesh.h"
  89 #include "BKE_modifier.h"
  90 #include "BKE_node.h"
  91 #include "BKE_object.h"
  92 #include "BKE_particle.h"
  93 #include "BKE_scene.h"
  94 #include "BKE_subsurf.h"
  95 #include "BKE_texture.h"
  96 #include "BKE_utildefines.h"
  97 #include "BKE_world.h"
  98
  99 #include "PIL_time.h"
 100 #include "IMB_imbuf_types.h"
 101
 102 #include "envmap.h"
 103 #include "multires.h"
 104 #include "occlusion.h"
 105 #include "render_types.h"
 106 #include "rendercore.h"
 107 #include "renderdatabase.h"
 108 #include "renderpipeline.h"
 109 #include "radio.h"
 110 #include "shadbuf.h"
 111 #include "shading.h"
 112 #include "strand.h"
 113 #include "texture.h"
 114 #include "sss.h"
 115 #include "strand.h"
 116 #include "zbuf.h"
 117 #include "sunsky.h"
 118
 119 #ifndef DISABLE_YAFRAY /* disable yafray */
 120
 121 #include "YafRay_Api.h"
 122
 123 /* yafray: Identity transform 'hack' removed, exporter now transforms vertices back to world.
 124  * Same is true for lamp coords & vec.
 125  * Duplicated data objects & dupliframe/duplivert objects are only stored once,
 126  * only the matrix is stored for all others, in yafray these objects are instances of the original.
 127  * The main changes are in RE_Database_FromScene().
 128  */
 129
 130 #endif /* disable yafray */
 131
 132 /* 10 times larger than normal epsilon, test it on default nurbs sphere with ray_transp (for quad detection) */
 133 /* or for checking vertex normal flips */
 134 #define FLT_EPSILON10 1.19209290e-06F
 135
 136 /* ------------------------------------------------------------------------- */
 137
 138 /* Stuff for stars. This sits here because it uses gl-things. Part of
 139 this code may move down to the converter.  */
 140 /* ------------------------------------------------------------------------- */
 141 /* this is a bad beast, since it is misused by the 3d view drawing as well. */
 142
 143 static HaloRen *initstar(Render *re, ObjectRen *obr, float *vec, float hasize)
 144 {
 145         HaloRen *har;
 146         float hoco[4];
 147
 148         projectverto(vec, re->winmat, hoco);
 149
 150         har= RE_findOrAddHalo(obr, obr->tothalo++);
 151
 152         /* projectvert is done in function zbufvlaggen again, because of parts */
 153         VECCOPY(har->co, vec);
 154         har->hasize= hasize;
 155
 156         har->zd= 0.0;
 157
 158         return har;
 159 }
 160
 161 /* there must be a 'fixed' amount of stars generated between
 162 *         near and far
 163 * all stars must by preference lie on the far and solely
 164 *        differ in clarity/color
 165 */
 166
 167 void RE_make_stars(Render *re, void (*initfunc)(void),
 168                                    void (*vertexfunc)(float*),  void (*termfunc)(void))
 169 {
 170         extern unsigned char hash[512];
 171         ObjectRen *obr= NULL;
 172         World *wrld= NULL;
 173         HaloRen *har;
 174         Scene *scene;
 175         Camera *camera;
 176         double dblrand, hlfrand;
 177         float vec[4], fx, fy, fz;
 178         float fac, starmindist, clipend;
 179         float mat[4][4], stargrid, maxrand, maxjit, force, alpha;
 180         int x, y, z, sx, sy, sz, ex, ey, ez, done = 0;
 181
 182         if(initfunc) {
 183                 scene= G.scene;
 184                 wrld= G.scene->world;
 185         }
 186         else {
 187                 scene= re->scene;
 188                 wrld= &(re->wrld);
 189         }
 190
 191         stargrid = wrld->stardist;                      /* distance between stars */
 192         maxrand = 2.0;                                          /* amount a star can be shifted (in grid units) */
 193         maxjit = (wrld->starcolnoise);          /* amount a color is being shifted */
 194
 195         /* size of stars */
 196         force = ( wrld->starsize );
 197
 198         /* minimal free space (starting at camera) */
 199         starmindist= wrld->starmindist;
 200
 201         if (stargrid <= 0.10) return;
 202
 203         if (re) re->flag |= R_HALO;
 204         else stargrid *= 1.0;                           /* then it draws fewer */
 205
 206         if(re) MTC_Mat4Invert(mat, re->viewmat);
 207         else MTC_Mat4One(mat);
 208
 209         /* BOUNDING BOX CALCULATION
 210                 * bbox goes from z = loc_near_var | loc_far_var,
 211                 * x = -z | +z,
 212                 * y = -z | +z
 213                 */
 214
 215         if(scene->camera==NULL)
 216                 return;
 217         camera = scene->camera->data;
 218         clipend = camera->clipend;
 219
 220         /* convert to grid coordinates */
 221
 222         sx = ((mat[3][0] - clipend) / stargrid) - maxrand;
 223         sy = ((mat[3][1] - clipend) / stargrid) - maxrand;
 224         sz = ((mat[3][2] - clipend) / stargrid) - maxrand;
 225
 226         ex = ((mat[3][0] + clipend) / stargrid) + maxrand;
 227         ey = ((mat[3][1] + clipend) / stargrid) + maxrand;
 228         ez = ((mat[3][2] + clipend) / stargrid) + maxrand;
 229
 230         dblrand = maxrand * stargrid;
 231         hlfrand = 2.0 * dblrand;
 232
 233         if (initfunc) {
 234                 initfunc();
 235         }
 236
 237         if(re) /* add render object for stars */
 238                 obr= RE_addRenderObject(re, NULL, NULL, 0, 0, 0);
 239
 240         for (x = sx, fx = sx * stargrid; x <= ex; x++, fx += stargrid) {
 241                 for (y = sy, fy = sy * stargrid; y <= ey ; y++, fy += stargrid) {
 242                         for (z = sz, fz = sz * stargrid; z <= ez; z++, fz += stargrid) {
 243
 244                                 BLI_srand((hash[z & 0xff] << 24) + (hash[y & 0xff] << 16) + (hash[x & 0xff] << 8));
 245                                 vec[0] = fx + (hlfrand * BLI_drand()) - dblrand;
 246                                 vec[1] = fy + (hlfrand * BLI_drand()) - dblrand;
 247                                 vec[2] = fz + (hlfrand * BLI_drand()) - dblrand;
 248                                 vec[3] = 1.0;
 249
 250                                 if (vertexfunc) {
 251                                         if(done & 1) vertexfunc(vec);
 252                                         done++;
 253                                 }
 254                                 else {
 255                                         MTC_Mat4MulVecfl(re->viewmat, vec);
 256
 257                                         /* in vec are global coordinates
 258                                         * calculate distance to camera
 259                                         * and using that, define the alpha
 260                                         */
 261
 262                                         {
 263                                                 float tx, ty, tz;
 264
 265                                                 tx = vec[0];
 266                                                 ty = vec[1];
 267                                                 tz = vec[2];
 268
 269                                                 alpha = sqrt(tx * tx + ty * ty + tz * tz);
 270
 271                                                 if (alpha >= clipend) alpha = 0.0;
 272                                                 else if (alpha <= starmindist) alpha = 0.0;
 273                                                 else if (alpha <= 2.0 * starmindist) {
 274                                                         alpha = (alpha - starmindist) / starmindist;
 275                                                 } else {
 276                                                         alpha -= 2.0 * starmindist;
 277                                                         alpha /= (clipend - 2.0 * starmindist);
 278                                                         alpha = 1.0 - alpha;
 279                                                 }
 280                                         }
 281
 282
 283                                         if (alpha != 0.0) {
 284                                                 fac = force * BLI_drand();
 285
 286                                                 har = initstar(re, obr, vec, fac);
 287
 288                                                 if (har) {
 289                                                         har->alfa = sqrt(sqrt(alpha));
 290                                                         har->add= 255;
 291                                                         har->r = har->g = har->b = 1.0;
 292                                                         if (maxjit) {
 293                                                                 har->r += ((maxjit * BLI_drand()) ) - maxjit;
 294                                                                 har->g += ((maxjit * BLI_drand()) ) - maxjit;
 295                                                                 har->b += ((maxjit * BLI_drand()) ) - maxjit;
 296                                                         }
 297                                                         har->hard = 32;
 298                                                         har->lay= -1;
 299                                                         har->type |= HA_ONLYSKY;
 300                                                         done++;
 301                                                 }
 302                                         }
 303                                 }
 304                         }
 305                         /* do not call blender_test_break() here, since it is used in UI as well, confusing the callback system */
 306                         /* main cause is G.afbreek of course, a global again... (ton) */
 307                 }
 308         }
 309         if (termfunc) termfunc();
 310
 311         if(obr)
 312                 re->tothalo += obr->tothalo;
 313 }
 314
 315
 316 /* ------------------------------------------------------------------------- */
 317 /* tool functions/defines for ad hoc simplification and possible future
 318    cleanup      */
 319 /* ------------------------------------------------------------------------- */
 320
 321 #define UVTOINDEX(u,v) (startvlak + (u) * sizev + (v))
 322 /*
 323
 324 NOTE THAT U/V COORDINATES ARE SOMETIMES SWAPPED !!
 325
 326 ^       ()----p4----p3----()
 327 |       |     |     |     |
 328 u       |     |  F1 |  F2 |
 329         |     |     |     |
 330         ()----p1----p2----()
 331                v ->
 332 */
 333
 334 /* ------------------------------------------------------------------------- */
 335
 336 static void split_v_renderfaces(ObjectRen *obr, int startvlak, int startvert, int usize, int vsize, int uIndex, int cyclu, int cyclv)
 337 {
 338         int vLen = vsize-1+(!!cyclv);
 339         int v;
 340
 341         for (v=0; v<vLen; v++) {
 342                 VlakRen *vlr = RE_findOrAddVlak(obr, startvlak + vLen*uIndex + v);
 343                 VertRen *vert = RE_vertren_copy(obr, vlr->v2);
 344
 345                 if (cyclv) {
 346                         vlr->v2 = vert;
 347
 348                         if (v==vLen-1) {
 349                                 VlakRen *vlr = RE_findOrAddVlak(obr, startvlak + vLen*uIndex + 0);
 350                                 vlr->v1 = vert;
 351                         } else {
 352                                 VlakRen *vlr = RE_findOrAddVlak(obr, startvlak + vLen*uIndex + v+1);
 353                                 vlr->v1 = vert;
 354                         }
 355                 } else {
 356                         vlr->v2 = vert;
 357
 358                         if (v<vLen-1) {
 359                                 VlakRen *vlr = RE_findOrAddVlak(obr, startvlak + vLen*uIndex + v+1);
 360                                 vlr->v1 = vert;
 361                         }
 362
 363                         if (v==0) {
 364                                 vlr->v1 = RE_vertren_copy(obr, vlr->v1);
 365                         }
 366                 }
 367         }
 368 }
 369
 370 /* ------------------------------------------------------------------------- */
 371
 372 static int check_vnormal(float *n, float *veno)
 373 {
 374         float inp;
 375
 376         inp=n[0]*veno[0]+n[1]*veno[1]+n[2]*veno[2];
 377         if(inp < -FLT_EPSILON10) return 1;
 378         return 0;
 379 }
 380
 381 /* ------------------------------------------------------------------------- */
 382 /* Stress, tangents and normals                                              */
 383 /* ------------------------------------------------------------------------- */
 384
 385 static void calc_edge_stress_add(float *accum, VertRen *v1, VertRen *v2)
 386 {
 387         float len= VecLenf(v1->co, v2->co)/VecLenf(v1->orco, v2->orco);
 388         float *acc;
 389
 390         acc= accum + 2*v1->index;
 391         acc[0]+= len;
 392         acc[1]+= 1.0f;
 393
 394         acc= accum + 2*v2->index;
 395         acc[0]+= len;
 396         acc[1]+= 1.0f;
 397 }
 398
 399 static void calc_edge_stress(Render *re, ObjectRen *obr, Mesh *me)
 400 {
 401         float loc[3], size[3], *accum, *acc, *accumoffs, *stress;
 402         int a;
 403
 404         if(obr->totvert==0) return;
 405
 406         mesh_get_texspace(me, loc, NULL, size);
 407
 408         accum= MEM_callocN(2*sizeof(float)*obr->totvert, "temp accum for stress");
 409
 410         /* de-normalize orco */
 411         for(a=0; a<obr->totvert; a++) {
 412                 VertRen *ver= RE_findOrAddVert(obr, a);
 413                 if(ver->orco) {
 414                         ver->orco[0]= ver->orco[0]*size[0] +loc[0];
 415                         ver->orco[1]= ver->orco[1]*size[1] +loc[1];
 416                         ver->orco[2]= ver->orco[2]*size[2] +loc[2];
 417                 }
 418         }
 419
 420         /* add stress values */
 421         accumoffs= accum;       /* so we can use vertex index */
 422         for(a=0; a<obr->totvlak; a++) {
 423                 VlakRen *vlr= RE_findOrAddVlak(obr, a);
 424
 425                 if(vlr->v1->orco && vlr->v4) {
 426                         calc_edge_stress_add(accumoffs, vlr->v1, vlr->v2);
 427                         calc_edge_stress_add(accumoffs, vlr->v2, vlr->v3);
 428                         calc_edge_stress_add(accumoffs, vlr->v3, vlr->v1);
 429                         if(vlr->v4) {
 430                                 calc_edge_stress_add(accumoffs, vlr->v3, vlr->v4);
 431                                 calc_edge_stress_add(accumoffs, vlr->v4, vlr->v1);
 432                                 calc_edge_stress_add(accumoffs, vlr->v2, vlr->v4);
 433                         }
 434                 }
 435         }
 436
 437         for(a=0; a<obr->totvert; a++) {
 438                 VertRen *ver= RE_findOrAddVert(obr, a);
 439                 if(ver->orco) {
 440                         /* find stress value */
 441                         acc= accumoffs + 2*ver->index;
 442                         if(acc[1]!=0.0f)
 443                                 acc[0]/= acc[1];
 444                         stress= RE_vertren_get_stress(obr, ver, 1);
 445                         *stress= *acc;
 446
 447                         /* restore orcos */
 448                         ver->orco[0] = (ver->orco[0]-loc[0])/size[0];
 449                         ver->orco[1] = (ver->orco[1]-loc[1])/size[1];
 450                         ver->orco[2] = (ver->orco[2]-loc[2])/size[2];
 451                 }
 452         }
 453
 454         MEM_freeN(accum);
 455 }
 456
 457 /* gets tangent from tface or orco */
 458 static void calc_tangent_vector(ObjectRen *obr, VertexTangent **vtangents, MemArena *arena, VlakRen *vlr, int do_nmap_tangent, int do_tangent)
 459 {
 460         MTFace *tface= RE_vlakren_get_tface(obr, vlr, obr->actmtface, NULL, 0);
 461         VertRen *v1=vlr->v1, *v2=vlr->v2, *v3=vlr->v3, *v4=vlr->v4;
 462         float tang[3], *tav;
 463         float *uv1, *uv2, *uv3, *uv4;
 464         float uv[4][2];
 465
 466         if(tface) {
 467                 uv1= tface->uv[0];
 468                 uv2= tface->uv[1];
 469                 uv3= tface->uv[2];
 470                 uv4= tface->uv[3];
 471         }
 472         else if(v1->orco) {
 473                 uv1= uv[0]; uv2= uv[1]; uv3= uv[2]; uv4= uv[3];
 474                 spheremap(v1->orco[0], v1->orco[1], v1->orco[2], &uv[0][0], &uv[0][1]);
 475                 spheremap(v2->orco[0], v2->orco[1], v2->orco[2], &uv[1][0], &uv[1][1]);
 476                 spheremap(v3->orco[0], v3->orco[1], v3->orco[2], &uv[2][0], &uv[2][1]);
 477                 if(v4)
 478                         spheremap(v4->orco[0], v4->orco[1], v4->orco[2], &uv[3][0], &uv[3][1]);
 479         }
 480         else return;
 481
 482         tangent_from_uv(uv1, uv2, uv3, v1->co, v2->co, v3->co, vlr->n, tang);
 483
 484         if(do_tangent) {
 485                 tav= RE_vertren_get_tangent(obr, v1, 1);
 486                 VECADD(tav, tav, tang);
 487                 tav= RE_vertren_get_tangent(obr, v2, 1);
 488                 VECADD(tav, tav, tang);
 489                 tav= RE_vertren_get_tangent(obr, v3, 1);
 490                 VECADD(tav, tav, tang);
 491         }
 492
 493         if(do_nmap_tangent) {
 494                 sum_or_add_vertex_tangent(arena, &vtangents[v1->index], tang, uv1);
 495                 sum_or_add_vertex_tangent(arena, &vtangents[v2->index], tang, uv2);
 496                 sum_or_add_vertex_tangent(arena, &vtangents[v3->index], tang, uv3);
 497         }
 498
 499         if(v4) {
 500                 tangent_from_uv(uv1, uv3, uv4, v1->co, v3->co, v4->co, vlr->n, tang);
 501
 502                 if(do_tangent) {
 503                         tav= RE_vertren_get_tangent(obr, v1, 1);
 504                         VECADD(tav, tav, tang);
 505                         tav= RE_vertren_get_tangent(obr, v3, 1);
 506                         VECADD(tav, tav, tang);
 507                         tav= RE_vertren_get_tangent(obr, v4, 1);
 508                         VECADD(tav, tav, tang);
 509                 }
 510
 511                 if(do_nmap_tangent) {
 512                         sum_or_add_vertex_tangent(arena, &vtangents[v1->index], tang, uv1);
 513                         sum_or_add_vertex_tangent(arena, &vtangents[v3->index], tang, uv3);
 514                         sum_or_add_vertex_tangent(arena, &vtangents[v4->index], tang, uv4);
 515                 }
 516         }
 517 }
 518
 519
 520 static void calc_vertexnormals(Render *re, ObjectRen *obr, int do_tangent, int do_nmap_tangent)
 521 {
 522         MemArena *arena= NULL;
 523         VertexTangent **vtangents= NULL;
 524         int a;
 525
 526         if(do_nmap_tangent) {
 527                 arena= BLI_memarena_new(BLI_MEMARENA_STD_BUFSIZE);
 528                 BLI_memarena_use_calloc(arena);
 529
 530                 vtangents= MEM_callocN(sizeof(VertexTangent*)*obr->totvert, "VertexTangent");
 531         }
 532
 533                 /* clear all vertex normals */
 534         for(a=0; a<obr->totvert; a++) {
 535                 VertRen *ver= RE_findOrAddVert(obr, a);
 536                 ver->n[0]=ver->n[1]=ver->n[2]= 0.0f;
 537         }
 538
 539                 /* calculate cos of angles and point-masses, use as weight factor to
 540                    add face normal to vertex */
 541         for(a=0; a<obr->totvlak; a++) {
 542                 VlakRen *vlr= RE_findOrAddVlak(obr, a);
 543                 if(vlr->flag & ME_SMOOTH) {
 544                         VertRen *v1= vlr->v1;
 545                         VertRen *v2= vlr->v2;
 546                         VertRen *v3= vlr->v3;
 547                         VertRen *v4= vlr->v4;
 548                         float n1[3], n2[3], n3[3], n4[3];
 549                         float fac1, fac2, fac3, fac4=0.0f;
 550
 551                         if(re->flag & R_GLOB_NOPUNOFLIP)
 552                                 vlr->flag |= R_NOPUNOFLIP;
 553
 554                         VecSubf(n1, v2->co, v1->co);
 555                         Normalize(n1);
 556                         VecSubf(n2, v3->co, v2->co);
 557                         Normalize(n2);
 558                         if(v4==NULL) {
 559                                 VecSubf(n3, v1->co, v3->co);
 560                                 Normalize(n3);
 561
 562                                 fac1= saacos(-n1[0]*n3[0]-n1[1]*n3[1]-n1[2]*n3[2]);
 563                                 fac2= saacos(-n1[0]*n2[0]-n1[1]*n2[1]-n1[2]*n2[2]);
 564                                 fac3= saacos(-n2[0]*n3[0]-n2[1]*n3[1]-n2[2]*n3[2]);
 565                         }
 566                         else {
 567                                 VecSubf(n3, v4->co, v3->co);
 568                                 Normalize(n3);
 569                                 VecSubf(n4, v1->co, v4->co);
 570                                 Normalize(n4);
 571
 572                                 fac1= saacos(-n4[0]*n1[0]-n4[1]*n1[1]-n4[2]*n1[2]);
 573                                 fac2= saacos(-n1[0]*n2[0]-n1[1]*n2[1]-n1[2]*n2[2]);
 574                                 fac3= saacos(-n2[0]*n3[0]-n2[1]*n3[1]-n2[2]*n3[2]);
 575                                 fac4= saacos(-n3[0]*n4[0]-n3[1]*n4[1]-n3[2]*n4[2]);
 576
 577                                 if(!(vlr->flag & R_NOPUNOFLIP)) {
 578                                         if( check_vnormal(vlr->n, v4->n) ) fac4= -fac4;
 579                                 }
 580
 581                                 v4->n[0] +=fac4*vlr->n[0];
 582                                 v4->n[1] +=fac4*vlr->n[1];
 583                                 v4->n[2] +=fac4*vlr->n[2];
 584                         }
 585
 586                         if(!(vlr->flag & R_NOPUNOFLIP)) {
 587                                 if( check_vnormal(vlr->n, v1->n) ) fac1= -fac1;
 588                                 if( check_vnormal(vlr->n, v2->n) ) fac2= -fac2;
 589                                 if( check_vnormal(vlr->n, v3->n) ) fac3= -fac3;
 590                         }
 591
 592                         v1->n[0] +=fac1*vlr->n[0];
 593                         v1->n[1] +=fac1*vlr->n[1];
 594                         v1->n[2] +=fac1*vlr->n[2];
 595
 596                         v2->n[0] +=fac2*vlr->n[0];
 597                         v2->n[1] +=fac2*vlr->n[1];
 598                         v2->n[2] +=fac2*vlr->n[2];
 599
 600                         v3->n[0] +=fac3*vlr->n[0];
 601                         v3->n[1] +=fac3*vlr->n[1];
 602                         v3->n[2] +=fac3*vlr->n[2];
 603
 604                 }
 605                 if(do_nmap_tangent || do_tangent) {
 606                         /* tangents still need to be calculated for flat faces too */
 607                         /* weighting removed, they are not vertexnormals */
 608                         calc_tangent_vector(obr, vtangents, arena, vlr, do_nmap_tangent, do_tangent);
 609                 }
 610         }
 611
 612                 /* do solid faces */
 613         for(a=0; a<obr->totvlak; a++) {
 614                 VlakRen *vlr= RE_findOrAddVlak(obr, a);
 615                 if((vlr->flag & ME_SMOOTH)==0) {
 616                         float *f1= vlr->v1->n;
 617                         if(f1[0]==0.0 && f1[1]==0.0 && f1[2]==0.0) VECCOPY(f1, vlr->n);
 618                         f1= vlr->v2->n;
 619                         if(f1[0]==0.0 && f1[1]==0.0 && f1[2]==0.0) VECCOPY(f1, vlr->n);
 620                         f1= vlr->v3->n;
 621                         if(f1[0]==0.0 && f1[1]==0.0 && f1[2]==0.0) VECCOPY(f1, vlr->n);
 622                         if(vlr->v4) {
 623                                 f1= vlr->v4->n;
 624                                 if(f1[0]==0.0 && f1[1]==0.0 && f1[2]==0.0) VECCOPY(f1, vlr->n);
 625                         }
 626                 }
 627
 628                 if(do_nmap_tangent) {
 629                         VertRen *v1=vlr->v1, *v2=vlr->v2, *v3=vlr->v3, *v4=vlr->v4;
 630                         MTFace *tface= RE_vlakren_get_tface(obr, vlr, obr->actmtface, NULL, 0);
 631
 632                         if(tface) {
 633                                 float *vtang, *ftang= RE_vlakren_get_nmap_tangent(obr, vlr, 1);
 634
 635                                 vtang= find_vertex_tangent(vtangents[v1->index], tface->uv[0]);
 636                                 VECCOPY(ftang, vtang);
 637                                 Normalize(ftang);
 638                                 vtang= find_vertex_tangent(vtangents[v2->index], tface->uv[1]);
 639                                 VECCOPY(ftang+3, vtang);
 640                                 Normalize(ftang+3);
 641                                 vtang= find_vertex_tangent(vtangents[v3->index], tface->uv[2]);
 642                                 VECCOPY(ftang+6, vtang);
 643                                 Normalize(ftang+6);
 644                                 if(v4) {
 645                                         vtang= find_vertex_tangent(vtangents[v4->index], tface->uv[3]);
 646                                         VECCOPY(ftang+9, vtang);
 647                                         Normalize(ftang+9);
 648                                 }
 649                         }
 650                 }
 651         }
 652
 653                 /* normalize vertex normals */
 654         for(a=0; a<obr->totvert; a++) {
 655                 VertRen *ver= RE_findOrAddVert(obr, a);
 656                 Normalize(ver->n);
 657                 if(do_tangent) {
 658                         float *tav= RE_vertren_get_tangent(obr, ver, 0);
 659                         if (tav) {
 660                                 /* orthonorm. */
 661                                 float tdn = tav[0]*ver->n[0] + tav[1]*ver->n[1] + tav[2]*ver->n[2];
 662                                 tav[0] -= ver->n[0]*tdn;
 663                                 tav[1] -= ver->n[1]*tdn;
 664                                 tav[2] -= ver->n[2]*tdn;
 665                                 Normalize(tav);
 666                         }
 667                 }
 668         }
 669
 670
 671         if(arena)
 672                 BLI_memarena_free(arena);
 673         if(vtangents)
 674                 MEM_freeN(vtangents);
 675 }
 676
 677 // NT same as calc_vertexnormals, but dont modify the existing vertex normals
 678 // only recalculate other render data. If this is at some point used for other things than fluidsim,
 679 // this could be made on option for the normal calc_vertexnormals
 680 static void calc_fluidsimnormals(Render *re, ObjectRen *obr, int do_nmap_tangent)
 681 {
 682         int a;
 683
 684         /* dont clear vertex normals here */
 685         // OFF for(a=0; a<obr->totvert; a++) { VertRen *ver= RE_findOrAddVert(obr, a); ver->n[0]=ver->n[1]=ver->n[2]= 0.0; }
 686         /* calculate cos of angles and point-masses, use as weight factor to add face normal to vertex */
 687         for(a=0; a<obr->totvlak; a++) {
 688                 VlakRen *vlr= RE_findOrAddVlak(obr, a);
 689                 if(vlr->flag & ME_SMOOTH) {
 690                         VertRen *v1= vlr->v1;
 691                         VertRen *v2= vlr->v2;
 692                         VertRen *v3= vlr->v3;
 693                         VertRen *v4= vlr->v4;
 694                         float n1[3], n2[3], n3[3], n4[3];
 695                         float fac1, fac2, fac3, fac4=0.0f;
 696
 697                         if(re->flag & R_GLOB_NOPUNOFLIP)
 698                                 vlr->flag |= R_NOPUNOFLIP;
 699
 700                         VecSubf(n1, v2->co, v1->co);
 701                         Normalize(n1);
 702                         VecSubf(n2, v3->co, v2->co);
 703                         Normalize(n2);
 704                         if(v4==NULL) {
 705                                 VecSubf(n3, v1->co, v3->co);
 706                                 Normalize(n3);
 707                                 fac1= saacos(-n1[0]*n3[0]-n1[1]*n3[1]-n1[2]*n3[2]);
 708                                 fac2= saacos(-n1[0]*n2[0]-n1[1]*n2[1]-n1[2]*n2[2]);
 709                                 fac3= saacos(-n2[0]*n3[0]-n2[1]*n3[1]-n2[2]*n3[2]);
 710                         }
 711                         else {
 712                                 VecSubf(n3, v4->co, v3->co);
 713                                 Normalize(n3);
 714                                 VecSubf(n4, v1->co, v4->co);
 715                                 Normalize(n4);
 716
 717                                 fac1= saacos(-n4[0]*n1[0]-n4[1]*n1[1]-n4[2]*n1[2]);
 718                                 fac2= saacos(-n1[0]*n2[0]-n1[1]*n2[1]-n1[2]*n2[2]);
 719                                 fac3= saacos(-n2[0]*n3[0]-n2[1]*n3[1]-n2[2]*n3[2]);
 720                                 fac4= saacos(-n3[0]*n4[0]-n3[1]*n4[1]-n3[2]*n4[2]);
 721
 722                                 if(!(vlr->flag & R_NOPUNOFLIP)) {
 723                                         if( check_vnormal(vlr->n, v4->n) ) fac4= -fac4;
 724                                 }
 725                         }
 726
 727                         //if(do_nmap_tangent)
 728                         //      calc_tangent_vector(obr, vlr, fac1, fac2, fac3, fac4);
 729                 }
 730                 if(do_nmap_tangent) {
 731                         /* tangents still need to be calculated for flat faces too */
 732                         /* weighting removed, they are not vertexnormals */
 733                         //calc_tangent_vector(obr, vlr);
 734                 }
 735         }
 736
 737         /* do solid faces */
 738         for(a=0; a<obr->totvlak; a++) {
 739                 VlakRen *vlr= RE_findOrAddVlak(obr, a);
 740                 if((vlr->flag & ME_SMOOTH)==0) {
 741                         float *f1= vlr->v1->n;
 742                         if(f1[0]==0.0 && f1[1]==0.0 && f1[2]==0.0) VECCOPY(f1, vlr->n);
 743                         f1= vlr->v2->n;
 744                         if(f1[0]==0.0 && f1[1]==0.0 && f1[2]==0.0) VECCOPY(f1, vlr->n);
 745                         f1= vlr->v3->n;
 746                         if(f1[0]==0.0 && f1[1]==0.0 && f1[2]==0.0) VECCOPY(f1, vlr->n);
 747                         if(vlr->v4) {
 748                                 f1= vlr->v4->n;
 749                                 if(f1[0]==0.0 && f1[1]==0.0 && f1[2]==0.0) VECCOPY(f1, vlr->n);
 750                         }
 751                 }
 752         }
 753
 754         /* normalize vertex normals */
 755         for(a=0; a<obr->totvert; a++) {
 756                 VertRen *ver= RE_findOrAddVert(obr, a);
 757                 Normalize(ver->n);
 758                 if(do_nmap_tangent) {
 759                         float *tav= RE_vertren_get_tangent(obr, ver, 0);
 760                         if(tav) Normalize(tav);
 761                 }
 762         }
 763 }
 764
 765 /* ------------------------------------------------------------------------- */
 766 /* Autosmoothing:                                                            */
 767 /* ------------------------------------------------------------------------- */
 768
 769 typedef struct ASvert {
 770         int totface;
 771         ListBase faces;
 772 } ASvert;
 773
 774 typedef struct ASface {
 775         struct ASface *next, *prev;
 776         VlakRen *vlr[4];
 777         VertRen *nver[4];
 778 } ASface;
 779
 780 static void as_addvert(ASvert *asv, VertRen *v1, VlakRen *vlr)
 781 {
 782         ASface *asf;
 783         int a;
 784
 785         if(v1 == NULL) return;
 786
 787         if(asv->faces.first==NULL) {
 788                 asf= MEM_callocN(sizeof(ASface), "asface");
 789                 BLI_addtail(&asv->faces, asf);
 790         }
 791
 792         asf= asv->faces.last;
 793         for(a=0; a<4; a++) {
 794                 if(asf->vlr[a]==NULL) {
 795                         asf->vlr[a]= vlr;
 796                         asv->totface++;
 797                         break;
 798                 }
 799         }
 800
 801         /* new face struct */
 802         if(a==4) {
 803                 asf= MEM_callocN(sizeof(ASface), "asface");
 804                 BLI_addtail(&asv->faces, asf);
 805                 asf->vlr[0]= vlr;
 806                 asv->totface++;
 807         }
 808 }
 809
 810 static int as_testvertex(VlakRen *vlr, VertRen *ver, ASvert *asv, float thresh)
 811 {
 812         /* return 1: vertex needs a copy */
 813         ASface *asf;
 814         float inp;
 815         int a;
 816
 817         if(vlr==0) return 0;
 818
 819         asf= asv->faces.first;
 820         while(asf) {
 821                 for(a=0; a<4; a++) {
 822                         if(asf->vlr[a] && asf->vlr[a]!=vlr) {
 823                                 inp= fabs( vlr->n[0]*asf->vlr[a]->n[0] + vlr->n[1]*asf->vlr[a]->n[1] + vlr->n[2]*asf->vlr[a]->n[2] );
 824                                 if(inp < thresh) return 1;
 825                         }
 826                 }
 827                 asf= asf->next;
 828         }
 829
 830         return 0;
 831 }
 832
 833 static VertRen *as_findvertex(VlakRen *vlr, VertRen *ver, ASvert *asv, float thresh)
 834 {
 835         /* return when new vertex already was made */
 836         ASface *asf;
 837         float inp;
 838         int a;
 839
 840         asf= asv->faces.first;
 841         while(asf) {
 842                 for(a=0; a<4; a++) {
 843                         if(asf->vlr[a] && asf->vlr[a]!=vlr) {
 844                                 /* this face already made a copy for this vertex! */
 845                                 if(asf->nver[a]) {
 846                                         inp= fabs( vlr->n[0]*asf->vlr[a]->n[0] + vlr->n[1]*asf->vlr[a]->n[1] + vlr->n[2]*asf->vlr[a]->n[2] );
 847                                         if(inp >= thresh) {
 848                                                 return asf->nver[a];
 849                                         }
 850                                 }
 851                         }
 852                 }
 853                 asf= asf->next;
 854         }
 855
 856         return NULL;
 857 }
 858
 859 /* note; autosmooth happens in object space still, after applying autosmooth we rotate */
 860 /* note2; actually, when original mesh and displist are equal sized, face normals are from original mesh */
 861 static void autosmooth(Render *re, ObjectRen *obr, float mat[][4], int degr)
 862 {
 863         ASvert *asv, *asverts;
 864         ASface *asf;
 865         VertRen *ver, *v1;
 866         VlakRen *vlr;
 867         float thresh;
 868         int a, b, totvert;
 869
 870         if(obr->totvert==0) return;
 871         asverts= MEM_callocN(sizeof(ASvert)*obr->totvert, "all smooth verts");
 872
 873         thresh= cos( M_PI*(0.5f+(float)degr)/180.0 );
 874
 875         /* step zero: give faces normals of original mesh, if this is provided */
 876
 877
 878         /* step one: construct listbase of all vertices and pointers to faces */
 879         for(a=0; a<obr->totvlak; a++) {
 880                 vlr= RE_findOrAddVlak(obr, a);
 881                 /* skip wire faces */
 882                 if(vlr->v2 != vlr->v3) {
 883                         as_addvert(asverts+vlr->v1->index, vlr->v1, vlr);
 884                         as_addvert(asverts+vlr->v2->index, vlr->v2, vlr);
 885                         as_addvert(asverts+vlr->v3->index, vlr->v3, vlr);
 886                         if(vlr->v4)
 887                                 as_addvert(asverts+vlr->v4->index, vlr->v4, vlr);
 888                 }
 889         }
 890
 891         totvert= obr->totvert;
 892         /* we now test all vertices, when faces have a normal too much different: they get a new vertex */
 893         for(a=0, asv=asverts; a<totvert; a++, asv++) {
 894                 if(asv && asv->totface>1) {
 895                         ver= RE_findOrAddVert(obr, a);
 896
 897                         asf= asv->faces.first;
 898                         while(asf) {
 899                                 for(b=0; b<4; b++) {
 900
 901                                         /* is there a reason to make a new vertex? */
 902                                         vlr= asf->vlr[b];
 903                                         if( as_testvertex(vlr, ver, asv, thresh) ) {
 904
 905                                                 /* already made a new vertex within threshold? */
 906                                                 v1= as_findvertex(vlr, ver, asv, thresh);
 907                                                 if(v1==NULL) {
 908                                                         /* make a new vertex */
 909                                                         v1= RE_vertren_copy(obr, ver);
 910                                                 }
 911                                                 asf->nver[b]= v1;
 912                                                 if(vlr->v1==ver) vlr->v1= v1;
 913                                                 if(vlr->v2==ver) vlr->v2= v1;
 914                                                 if(vlr->v3==ver) vlr->v3= v1;
 915                                                 if(vlr->v4==ver) vlr->v4= v1;
 916                                         }
 917                                 }
 918                                 asf= asf->next;
 919                         }
 920                 }
 921         }
 922
 923         /* free */
 924         for(a=0; a<totvert; a++) {
 925                 BLI_freelistN(&asverts[a].faces);
 926         }
 927         MEM_freeN(asverts);
 928
 929         /* rotate vertices and calculate normal of faces */
 930         for(a=0; a<obr->totvert; a++) {
 931                 ver= RE_findOrAddVert(obr, a);
 932                 MTC_Mat4MulVecfl(mat, ver->co);
 933         }
 934         for(a=0; a<obr->totvlak; a++) {
 935                 vlr= RE_findOrAddVlak(obr, a);
 936
 937                 /* skip wire faces */
 938                 if(vlr->v2 != vlr->v3) {
 939                         if(vlr->v4)
 940                                 CalcNormFloat4(vlr->v4->co, vlr->v3->co, vlr->v2->co, vlr->v1->co, vlr->n);
 941                         else
 942                                 CalcNormFloat(vlr->v3->co, vlr->v2->co, vlr->v1->co, vlr->n);
 943                 }
 944         }
 945 }
 946
 947 /* ------------------------------------------------------------------------- */
 948 /* Orco hash and Materials                                                   */
 949 /* ------------------------------------------------------------------------- */
 950
 951 static float *get_object_orco(Render *re, Object *ob)
 952 {
 953         float *orco;
 954
 955         if (!re->orco_hash)
 956                 re->orco_hash = BLI_ghash_new(BLI_ghashutil_ptrhash, BLI_ghashutil_ptrcmp);
 957
 958         orco = BLI_ghash_lookup(re->orco_hash, ob);
 959
 960         if (!orco) {
 961                 if (ELEM(ob->type, OB_CURVE, OB_FONT)) {
 962                         orco = make_orco_curve(ob);
 963                 } else if (ob->type==OB_SURF) {
 964                         orco = make_orco_surf(ob);
 965                 } else if (ob->type==OB_MBALL) {
 966                         orco = make_orco_mball(ob);
 967                 }
 968
 969                 if (orco)
 970                         BLI_ghash_insert(re->orco_hash, ob, orco);
 971         }
 972
 973         return orco;
 974 }
 975
 976 static void set_object_orco(Render *re, void *ob, float *orco)
 977 {
 978         if (!re->orco_hash)
 979                 re->orco_hash = BLI_ghash_new(BLI_ghashutil_ptrhash, BLI_ghashutil_ptrcmp);
 980
 981         BLI_ghash_insert(re->orco_hash, ob, orco);
 982 }
 983
 984 static void free_mesh_orco_hash(Render *re)
 985 {
 986         if (re->orco_hash) {
 987                 BLI_ghash_free(re->orco_hash, NULL, (GHashValFreeFP)MEM_freeN);
 988                 re->orco_hash = NULL;
 989         }
 990 }
 991
 992 static void flag_render_node_material(Render *re, bNodeTree *ntree)
 993 {
 994         bNode *node;
 995
 996         for(node=ntree->nodes.first; node; node= node->next) {
 997                 if(node->id) {
 998                         if(GS(node->id->name)==ID_MA) {
 999                                 Material *ma= (Material *)node->id;
1000
1001                                 if(ma->mode & MA_ZTRA)
1002                                         re->flag |= R_ZTRA;
1003
1004                                 ma->flag |= MA_IS_USED;
1005                         }
1006                         else if(node->type==NODE_GROUP)
1007                                 flag_render_node_material(re, (bNodeTree *)node->id);
1008                 }
1009         }
1010 }
1011
1012 static Material *give_render_material(Render *re, Object *ob, int nr)
1013 {
1014         extern Material defmaterial;    /* material.c */
1015         Material *ma;
1016
1017         ma= give_current_material(ob, nr);
1018         if(ma==NULL)
1019                 ma= &defmaterial;
1020
1021         if(re->r.mode & R_SPEED) ma->texco |= NEED_UV;
1022
1023         if(ma->mode & MA_ZTRA)
1024                 re->flag |= R_ZTRA;
1025
1026         /* for light groups */
1027         ma->flag |= MA_IS_USED;
1028
1029         if(ma->nodetree && ma->use_nodes)
1030                 flag_render_node_material(re, ma->nodetree);
1031
1032         return ma;
1033 }
1034
1035 /* ------------------------------------------------------------------------- */
1036 /* Particles                                                                 */
1037 /* ------------------------------------------------------------------------- */
1038
1039 /* future thread problem... */
1040 static void static_particle_strand(Render *re, ObjectRen *obr, Material *ma, float *orco, float *surfnor,
1041                                                                    float *uvco, int totuv, MCol *mcol, int totcol, float *vec, float *vec1, float ctime,
1042                                                                    int first, int line, int adapt, float adapt_angle, float adapt_pix, int override_uv)
1043 {
1044         static VertRen *v1= NULL, *v2= NULL;
1045         VlakRen *vlr;
1046         float nor[3], cross[3], crosslen, w, dx, dy, width;
1047         static float anor[3], avec[3];
1048         int flag, i;
1049         static int second=0;
1050
1051         VecSubf(nor, vec, vec1);
1052         Normalize(nor);         // nor needed as tangent
1053         Crossf(cross, vec, nor);
1054
1055         /* turn cross in pixelsize */
1056         w= vec[2]*re->winmat[2][3] + re->winmat[3][3];
1057         dx= re->winx*cross[0]*re->winmat[0][0];
1058         dy= re->winy*cross[1]*re->winmat[1][1];
1059         w= sqrt(dx*dx + dy*dy)/w;
1060
1061         if(w!=0.0f) {
1062                 float fac;
1063                 if(ma->strand_ease!=0.0f) {
1064                         if(ma->strand_ease<0.0f)
1065                                 fac= pow(ctime, 1.0+ma->strand_ease);
1066                         else
1067                                 fac= pow(ctime, 1.0/(1.0f-ma->strand_ease));
1068                 }
1069                 else fac= ctime;
1070
1071                 width= ((1.0f-fac)*ma->strand_sta + (fac)*ma->strand_end);
1072
1073                 /* use actual Blender units for strand width and fall back to minimum width */
1074                 if(ma->mode & MA_STR_B_UNITS){
1075             crosslen= VecLength(cross);
1076             w= 2.0f*crosslen*ma->strand_min/w;
1077
1078                         if(width < w)
1079                                 width= w;
1080
1081                         /*cross is the radius of the strand so we want it to be half of full width */
1082                         VecMulf(cross,0.5/crosslen);
1083                 }
1084                 else
1085                         width/=w;
1086
1087                 VecMulf(cross, width);
1088         }
1089         else width= 1.0f;
1090
1091         if(ma->mode & MA_TANGENT_STR)
1092                 flag= R_SMOOTH|R_NOPUNOFLIP|R_TANGENT;
1093         else
1094                 flag= R_SMOOTH;
1095
1096         /* only 1 pixel wide strands filled in as quads now, otherwise zbuf errors */
1097         if(ma->strand_sta==1.0f)
1098                 flag |= R_STRAND;
1099
1100         /* single face line */
1101         if(line) {
1102                 vlr= RE_findOrAddVlak(obr, obr->totvlak++);
1103                 vlr->flag= flag;
1104                 vlr->v1= RE_findOrAddVert(obr, obr->totvert++);
1105                 vlr->v2= RE_findOrAddVert(obr, obr->totvert++);
1106                 vlr->v3= RE_findOrAddVert(obr, obr->totvert++);
1107                 vlr->v4= RE_findOrAddVert(obr, obr->totvert++);
1108
1109                 VECCOPY(vlr->v1->co, vec);
1110                 VecAddf(vlr->v1->co, vlr->v1->co, cross);
1111                 VECCOPY(vlr->v1->n, nor);
1112                 vlr->v1->orco= orco;
1113                 vlr->v1->accum= -1.0f;  // accum abuse for strand texco
1114
1115                 VECCOPY(vlr->v2->co, vec);
1116                 VecSubf(vlr->v2->co, vlr->v2->co, cross);
1117                 VECCOPY(vlr->v2->n, nor);
1118                 vlr->v2->orco= orco;
1119                 vlr->v2->accum= vlr->v1->accum;
1120
1121                 VECCOPY(vlr->v4->co, vec1);
1122                 VecAddf(vlr->v4->co, vlr->v4->co, cross);
1123                 VECCOPY(vlr->v4->n, nor);
1124                 vlr->v4->orco= orco;
1125                 vlr->v4->accum= 1.0f;   // accum abuse for strand texco
1126
1127                 VECCOPY(vlr->v3->co, vec1);
1128                 VecSubf(vlr->v3->co, vlr->v3->co, cross);
1129                 VECCOPY(vlr->v3->n, nor);
1130                 vlr->v3->orco= orco;
1131                 vlr->v3->accum= vlr->v4->accum;
1132
1133                 CalcNormFloat4(vlr->v4->co, vlr->v3->co, vlr->v2->co, vlr->v1->co, vlr->n);
1134
1135                 vlr->mat= ma;
1136                 vlr->ec= ME_V2V3;
1137
1138                 if(surfnor) {
1139                         float *snor= RE_vlakren_get_surfnor(obr, vlr, 1);
1140                         VECCOPY(snor, surfnor);
1141                 }
1142
1143                 if(uvco){
1144                         for(i=0; i<totuv; i++){
1145                                 MTFace *mtf;
1146                                 mtf=RE_vlakren_get_tface(obr,vlr,i,NULL,1);
1147                                 mtf->uv[0][0]=mtf->uv[1][0]=
1148                                 mtf->uv[2][0]=mtf->uv[3][0]=(uvco+2*i)[0];
1149                                 mtf->uv[0][1]=mtf->uv[1][1]=
1150                                 mtf->uv[2][1]=mtf->uv[3][1]=(uvco+2*i)[1];
1151                         }
1152                         if(override_uv>=0){
1153                                 MTFace *mtf;
1154                                 mtf=RE_vlakren_get_tface(obr,vlr,override_uv,NULL,0);
1155
1156                                 mtf->uv[0][0]=mtf->uv[3][0]=0.0f;
1157                                 mtf->uv[1][0]=mtf->uv[2][0]=1.0f;
1158
1159                                 mtf->uv[0][1]=mtf->uv[1][1]=0.0f;
1160                                 mtf->uv[2][1]=mtf->uv[3][1]=1.0f;
1161                         }
1162                 }
1163                 if(mcol){
1164                         for(i=0; i<totcol; i++){
1165                                 MCol *mc;
1166                                 mc=RE_vlakren_get_mcol(obr,vlr,i,NULL,1);
1167                                 mc[0]=mc[1]=mc[2]=mc[3]=mcol[i];
1168                                 mc[0]=mc[1]=mc[2]=mc[3]=mcol[i];
1169                         }
1170                 }
1171         }
1172         /* first two vertices of a strand */
1173         else if(first) {
1174                 if(adapt){
1175                         VECCOPY(anor, nor);
1176                         VECCOPY(avec, vec);
1177                         second=1;
1178                 }
1179
1180                 v1= RE_findOrAddVert(obr, obr->totvert++);
1181                 v2= RE_findOrAddVert(obr, obr->totvert++);
1182
1183                 VECCOPY(v1->co, vec);
1184                 VecAddf(v1->co, v1->co, cross);
1185                 VECCOPY(v1->n, nor);
1186                 v1->orco= orco;
1187                 v1->accum= -1.0f;       // accum abuse for strand texco
1188
1189                 VECCOPY(v2->co, vec);
1190                 VecSubf(v2->co, v2->co, cross);
1191                 VECCOPY(v2->n, nor);
1192                 v2->orco= orco;
1193                 v2->accum= v1->accum;
1194         }
1195         /* more vertices & faces to strand */
1196         else {
1197                 if(adapt==0 || second){
1198                         vlr= RE_findOrAddVlak(obr, obr->totvlak++);
1199                         vlr->flag= flag;
1200                         vlr->v1= v1;
1201                         vlr->v2= v2;
1202                         vlr->v3= RE_findOrAddVert(obr, obr->totvert++);
1203                         vlr->v4= RE_findOrAddVert(obr, obr->totvert++);
1204
1205                         v1= vlr->v4; // cycle
1206                         v2= vlr->v3; // cycle
1207
1208
1209                         if(adapt){
1210                                 second=0;
1211                                 VECCOPY(anor,nor);
1212                                 VECCOPY(avec,vec);
1213                         }
1214
1215                 }
1216                 else if(adapt){
1217                         float dvec[3],pvec[3];
1218                         VecSubf(dvec,avec,vec);
1219                         Projf(pvec,dvec,vec);
1220                         VecSubf(dvec,dvec,pvec);
1221
1222                         w= vec[2]*re->winmat[2][3] + re->winmat[3][3];
1223                         dx= re->winx*dvec[0]*re->winmat[0][0]/w;
1224                         dy= re->winy*dvec[1]*re->winmat[1][1]/w;
1225                         w= sqrt(dx*dx + dy*dy);
1226                         if(Inpf(anor,nor)<adapt_angle && w>adapt_pix){
1227                                 vlr= RE_findOrAddVlak(obr, obr->totvlak++);
1228                                 vlr->flag= flag;
1229                                 vlr->v1= v1;
1230                                 vlr->v2= v2;
1231                                 vlr->v3= RE_findOrAddVert(obr, obr->totvert++);
1232                                 vlr->v4= RE_findOrAddVert(obr, obr->totvert++);
1233
1234                                 v1= vlr->v4; // cycle
1235                                 v2= vlr->v3; // cycle
1236
1237                                 VECCOPY(anor,nor);
1238                                 VECCOPY(avec,vec);
1239                         }
1240                         else{
1241                                 vlr= RE_findOrAddVlak(obr, obr->totvlak-1);
1242                         }
1243                 }
1244
1245                 VECCOPY(vlr->v4->co, vec);
1246                 VecAddf(vlr->v4->co, vlr->v4->co, cross);
1247                 VECCOPY(vlr->v4->n, nor);
1248                 vlr->v4->orco= orco;
1249                 vlr->v4->accum= -1.0f + 2.0f*ctime;     // accum abuse for strand texco
1250
1251                 VECCOPY(vlr->v3->co, vec);
1252                 VecSubf(vlr->v3->co, vlr->v3->co, cross);
1253                 VECCOPY(vlr->v3->n, nor);
1254                 vlr->v3->orco= orco;
1255                 vlr->v3->accum= vlr->v4->accum;
1256
1257                 CalcNormFloat4(vlr->v4->co, vlr->v3->co, vlr->v2->co, vlr->v1->co, vlr->n);
1258
1259                 vlr->mat= ma;
1260                 vlr->ec= ME_V2V3;
1261
1262                 if(surfnor) {
1263                         float *snor= RE_vlakren_get_surfnor(obr, vlr, 1);
1264                         VECCOPY(snor, surfnor);
1265                 }
1266
1267                 if(uvco){
1268                         for(i=0; i<totuv; i++){
1269                                 MTFace *mtf;
1270                                 mtf=RE_vlakren_get_tface(obr,vlr,i,NULL,1);
1271                                 mtf->uv[0][0]=mtf->uv[1][0]=
1272                                 mtf->uv[2][0]=mtf->uv[3][0]=(uvco+2*i)[0];
1273                                 mtf->uv[0][1]=mtf->uv[1][1]=
1274                                 mtf->uv[2][1]=mtf->uv[3][1]=(uvco+2*i)[1];
1275                         }
1276                         if(override_uv>=0){
1277                                 MTFace *mtf;
1278                                 mtf=RE_vlakren_get_tface(obr,vlr,override_uv,NULL,0);
1279
1280                                 mtf->uv[0][0]=mtf->uv[3][0]=0.0f;
1281                                 mtf->uv[1][0]=mtf->uv[2][0]=1.0f;
1282
1283                                 mtf->uv[0][1]=mtf->uv[1][1]=(vlr->v1->accum+1.0f)/2.0f;
1284                                 mtf->uv[2][1]=mtf->uv[3][1]=(vlr->v3->accum+1.0f)/2.0f;
1285                         }
1286                 }
1287                 if(mcol){
1288                         for(i=0; i<totcol; i++){
1289                                 MCol *mc;
1290                                 mc=RE_vlakren_get_mcol(obr,vlr,i,NULL,1);
1291                                 mc[0]=mc[1]=mc[2]=mc[3]=mcol[i];
1292                                 mc[0]=mc[1]=mc[2]=mc[3]=mcol[i];
1293                         }
1294                 }
1295         }
1296 }
1297
1298 static void static_particle_wire(ObjectRen *obr, Material *ma, float *vec, float *vec1, int first, int line)
1299 {
1300         VlakRen *vlr;
1301         static VertRen *v1;
1302
1303         if(line) {
1304                 vlr= RE_findOrAddVlak(obr, obr->totvlak++);
1305                 vlr->v1= RE_findOrAddVert(obr, obr->totvert++);
1306                 vlr->v2= RE_findOrAddVert(obr, obr->totvert++);
1307                 vlr->v3= vlr->v2;
1308                 vlr->v4= NULL;
1309
1310                 VECCOPY(vlr->v1->co, vec);
1311                 VECCOPY(vlr->v2->co, vec1);
1312
1313                 VecSubf(vlr->n, vec, vec1);
1314                 Normalize(vlr->n);
1315                 VECCOPY(vlr->v1->n, vlr->n);
1316                 VECCOPY(vlr->v2->n, vlr->n);
1317
1318                 vlr->mat= ma;
1319                 vlr->ec= ME_V1V2;
1320
1321         }
1322         else if(first) {
1323                 v1= RE_findOrAddVert(obr, obr->totvert++);
1324                 VECCOPY(v1->co, vec);
1325         }
1326         else {
1327                 vlr= RE_findOrAddVlak(obr, obr->totvlak++);
1328                 vlr->v1= v1;
1329                 vlr->v2= RE_findOrAddVert(obr, obr->totvert++);
1330                 vlr->v3= vlr->v2;
1331                 vlr->v4= NULL;
1332
1333                 v1= vlr->v2; // cycle
1334                 VECCOPY(v1->co, vec);
1335
1336                 VecSubf(vlr->n, vec, vec1);
1337                 Normalize(vlr->n);
1338                 VECCOPY(v1->n, vlr->n);
1339
1340                 vlr->mat= ma;
1341                 vlr->ec= ME_V1V2;
1342         }
1343
1344 }
1345 static void particle_billboard(Render *re, ObjectRen *obr, Material *ma, Object *bb_ob, float *vec, float *vel, float size, float tilt, short align,
1346                                                            int lock, int p, int totpart, short uv_split, short anim, short split_offset, float random, float pa_time, float offset[2], int uv[3])
1347 {
1348         VlakRen *vlr;
1349         MTFace *mtf;
1350         float xvec[3]={1.0f,0.0f,0.0f}, yvec[3]={0.0f,1.0f,0.0f}, zvec[3];
1351         float onevec[3]={0.0f,0.0f,0.0f}, tvec[3],tvec2[3], bb_center[3];
1352         float uvx=0.0f, uvy=0.0f, uvdx=1.0f, uvdy=1.0f, time=0.0f;
1353
1354         if(align<PART_BB_VIEW)
1355                 onevec[align]=1.0f;
1356
1357         vlr= RE_findOrAddVlak(obr, obr->totvlak++);
1358         vlr->v1= RE_findOrAddVert(obr, obr->totvert++);
1359         vlr->v2= RE_findOrAddVert(obr, obr->totvert++);
1360         vlr->v3= RE_findOrAddVert(obr, obr->totvert++);
1361         vlr->v4= RE_findOrAddVert(obr, obr->totvert++);
1362
1363         if(lock && align==PART_BB_VIEW){
1364                 VECCOPY(xvec,bb_ob->obmat[0]);
1365                 Normalize(xvec);
1366                 VECCOPY(yvec,bb_ob->obmat[1]);
1367                 Normalize(yvec);
1368                 VECCOPY(zvec,bb_ob->obmat[2]);
1369                 Normalize(zvec);
1370         }
1371         else if(align==PART_BB_VEL){
1372                 float temp[3];
1373                 VECCOPY(temp,vel);
1374                 Normalize(temp);
1375                 VECSUB(zvec,bb_ob->obmat[3],vec);
1376                 if(lock){
1377                         float fac=-Inpf(zvec,temp);
1378                         VECADDFAC(zvec,zvec,temp,fac);
1379                 }
1380                 Normalize(zvec);
1381                 Crossf(xvec,temp,zvec);
1382                 Normalize(xvec);
1383                 Crossf(yvec,zvec,xvec);
1384         }
1385         else{
1386                 VECSUB(zvec,bb_ob->obmat[3],vec);
1387                 if(lock)
1388                         zvec[align]=0.0f;
1389                 Normalize(zvec);
1390
1391                 if(align<PART_BB_VIEW)
1392                         Crossf(xvec,onevec,zvec);
1393                 else
1394                         Crossf(xvec,bb_ob->obmat[1],zvec);
1395                 Normalize(xvec);
1396                 Crossf(yvec,zvec,xvec);
1397         }
1398
1399         VECCOPY(tvec,xvec);
1400         VECCOPY(tvec2,yvec);
1401
1402         VecMulf(xvec,cos(tilt*(float)M_PI));
1403         VecMulf(tvec2,sin(tilt*(float)M_PI));
1404         VECADD(xvec,xvec,tvec2);
1405
1406         VecMulf(yvec,cos(tilt*(float)M_PI));
1407         VecMulf(tvec,-sin(tilt*(float)M_PI));
1408         VECADD(yvec,yvec,tvec);
1409
1410         VecMulf(xvec,size);
1411         VecMulf(yvec,size);
1412
1413         VECADDFAC(bb_center,vec,xvec,offset[0]);
1414         VECADDFAC(bb_center,bb_center,yvec,offset[1]);
1415
1416         VECADD(vlr->v1->co,bb_center,xvec);
1417         VECADD(vlr->v1->co,vlr->v1->co,yvec);
1418         MTC_Mat4MulVecfl(re->viewmat,vlr->v1->co);
1419
1420         VECSUB(vlr->v2->co,bb_center,xvec);
1421         VECADD(vlr->v2->co,vlr->v2->co,yvec);
1422         MTC_Mat4MulVecfl(re->viewmat,vlr->v2->co);
1423
1424         VECSUB(vlr->v3->co,bb_center,xvec);
1425         VECSUB(vlr->v3->co,vlr->v3->co,yvec);
1426         MTC_Mat4MulVecfl(re->viewmat,vlr->v3->co);
1427
1428         VECADD(vlr->v4->co,bb_center,xvec);
1429         VECSUB(vlr->v4->co,vlr->v4->co,yvec);
1430         MTC_Mat4MulVecfl(re->viewmat,vlr->v4->co);
1431
1432         CalcNormFloat4(vlr->v4->co, vlr->v3->co, vlr->v2->co, vlr->v1->co, vlr->n);
1433         VECCOPY(vlr->v1->n,vlr->n);
1434         VECCOPY(vlr->v2->n,vlr->n);
1435         VECCOPY(vlr->v3->n,vlr->n);
1436         VECCOPY(vlr->v4->n,vlr->n);
1437
1438         vlr->mat= ma;
1439         vlr->ec= ME_V2V3;
1440
1441         if(uv_split>1){
1442                 uvdx=uvdy=1.0f/(float)uv_split;
1443                 if(anim==PART_BB_ANIM_TIME){
1444                         if(split_offset==PART_BB_OFF_NONE)
1445                                 time=pa_time;
1446                         else if(split_offset==PART_BB_OFF_LINEAR)
1447                                 time=(float)fmod(pa_time+(float)p/(float)(uv_split*uv_split),1.0f);
1448                         else /* split_offset==PART_BB_OFF_RANDOM */
1449                                 time=(float)fmod(pa_time+random,1.0f);
1450
1451                 }
1452                 else if(anim==PART_BB_ANIM_ANGLE){
1453                         if(align==PART_BB_VIEW){
1454                                 time=(float)fmod((tilt+1.0f)/2.0f,1.0);
1455                         }
1456                         else{
1457                                 float axis1[3]={0.0f,0.0f,0.0f};
1458                                 float axis2[3]={0.0f,0.0f,0.0f};
1459                                 axis1[(align+1)%3]=1.0f;
1460                                 axis2[(align+2)%3]=1.0f;
1461                                 if(lock==0){
1462                                         zvec[align]=0.0f;
1463                                         Normalize(zvec);
1464                                 }
1465                                 time=saacos(Inpf(zvec,axis1))/(float)M_PI;
1466                                 if(Inpf(zvec,axis2)<0.0f)
1467                                         time=1.0f-time/2.0f;
1468                                 else
1469                                         time=time/2.0f;
1470                         }
1471                         if(split_offset==PART_BB_OFF_LINEAR)
1472                                 time=(float)fmod(pa_time+(float)p/(float)(uv_split*uv_split),1.0f);
1473                         else if(split_offset==PART_BB_OFF_RANDOM)
1474                                 time=(float)fmod(pa_time+random,1.0f);
1475                 }
1476                 else{
1477                         if(split_offset==PART_BB_OFF_NONE)
1478                                 time=0.0f;
1479                         else if(split_offset==PART_BB_OFF_LINEAR)
1480                                 time=(float)fmod((float)p/(float)(uv_split*uv_split),1.0f);
1481                         else /* split_offset==PART_BB_OFF_RANDOM */
1482                                 time=random;
1483                 }
1484                 uvx=uvdx*floor((float)(uv_split*uv_split)*(float)fmod((double)time,(double)uvdx));
1485                 uvy=uvdy*floor((1.0f-time)*(float)uv_split);
1486                 if(fmod(time,1.0f/uv_split)==0.0f)
1487                         uvy-=uvdy;
1488         }
1489
1490         /* normal UVs */
1491         if(uv[0]>=0){
1492                 mtf=RE_vlakren_get_tface(obr,vlr,uv[0],NULL,1);
1493                 mtf->uv[0][0]=1.0f;
1494                 mtf->uv[0][1]=1.0f;
1495                 mtf->uv[1][0]=0.0f;
1496                 mtf->uv[1][1]=1.0f;
1497                 mtf->uv[2][0]=0.0f;
1498                 mtf->uv[2][1]=0.0f;
1499                 mtf->uv[3][0]=1.0f;
1500                 mtf->uv[3][1]=0.0f;
1501         }
1502
1503         /* time-index UVs */
1504         if(uv[1]>=0){
1505                 mtf=RE_vlakren_get_tface(obr,vlr,uv[1],NULL,1);
1506                 mtf->uv[0][0]=mtf->uv[1][0]=mtf->uv[2][0]=mtf->uv[3][0]=pa_time;
1507                 mtf->uv[0][1]=mtf->uv[1][1]=mtf->uv[2][1]=mtf->uv[3][1]=(float)p/(float)totpart;
1508         }
1509
1510         /* split UVs */
1511         if(uv_split>1 && uv[2]>=0){
1512                 mtf=RE_vlakren_get_tface(obr,vlr,uv[2],NULL,1);
1513                 mtf->uv[0][0]=uvx+uvdx;
1514                 mtf->uv[0][1]=uvy+uvdy;
1515                 mtf->uv[1][0]=uvx;
1516                 mtf->uv[1][1]=uvy+uvdy;
1517                 mtf->uv[2][0]=uvx;
1518                 mtf->uv[2][1]=uvy;
1519                 mtf->uv[3][0]=uvx+uvdx;
1520                 mtf->uv[3][1]=uvy;
1521         }
1522 }
1523 static void render_new_particle(Render *re, ObjectRen *obr, DerivedMesh *dm, Material *ma, int path, int first, int line,
1524                                                                 float time, float *loc, float *loc1, float *orco, float *surfnor, int totuv, float *uvco,
1525                                                                 int totcol, MCol *mcol, float size, int seed, int override_uv,
1526                                                                 int adapt, float adapt_angle, float adapt_pix)
1527 {
1528         HaloRen *har=0;
1529         if(path){
1530                 if(ma->mode&MA_WIRE)
1531                         static_particle_wire(obr, ma, loc, loc1, first, line);
1532                 else if(ma->mode & MA_HALO){
1533                         har= RE_inithalo_particle(re, obr, dm, ma, loc, loc1, orco, uvco, size, 1.0, seed);
1534                         if(har) har->lay= obr->ob->lay;
1535                 }
1536                 else
1537                         static_particle_strand(re, obr, ma, orco, surfnor, uvco, totuv, mcol, totcol, loc, loc1, time, first, line, adapt, adapt_angle, adapt_pix, override_uv);
1538         }
1539         else{
1540                 har= RE_inithalo_particle(re, obr, dm, ma, loc, NULL, orco, uvco, size, 0.0, seed);
1541                 if(har) har->lay= obr->ob->lay;
1542         }
1543 }
1544 static int render_new_particle_system(Render *re, ObjectRen *obr, ParticleSystem *psys, int timeoffset)
1545 {
1546         Object *ob= obr->ob;
1547         Object *tob=0, *bb_ob=re->scene->camera;
1548         Material *ma=0;
1549         MTFace *mtface;
1550         ParticleSystemModifierData *psmd;
1551         ParticleSystem *tpsys=0;
1552         ParticleSettings *part, *tpart=0;
1553         ParticleData *pars, *pa=0,*tpa=0;
1554         ParticleKey *states=0;
1555         ParticleKey state;
1556         ParticleCacheKey *cache=0;
1557         StrandBuffer *strandbuf=0;
1558         StrandVert *svert=0;
1559         StrandBound *sbound= 0;
1560         StrandRen *strand=0;
1561         RNG *rng= 0;
1562         MCol *mcol= 0;
1563         float loc[3],loc1[3],loc0[3],vel[3],mat[4][4],nmat[3][3],co[3],nor[3],time;
1564         float *orco=0,*surfnor=0,*uvco=0, strandlen=0.0f, curlen=0.0f;
1565         float hasize, pa_size, pa_time, r_tilt, cfra=bsystem_time(ob,(float)CFRA,0.0);
1566         float adapt_angle=0.0, adapt_pix=0.0, random, simplify[2];
1567         int i, a, k, max_k=0, totpart, totuv=0, totcol=0, override_uv=-1, dosimplify = 0, dosurfacecache = 0;
1568         int path_possible=0, keys_possible=0, baked_keys=0, totchild=0;
1569         int seed, path_nbr=0, path=0, orco1=0, adapt=0, uv[3]={0,0,0}, num;
1570         int totface, *origindex = 0;
1571         char **uv_name=0;
1572
1573 /* 1. check that everything is ok & updated */
1574         if(psys==NULL)
1575                 return 0;
1576
1577         totchild=psys->totchild;
1578
1579         part=psys->part;
1580         pars=psys->particles;
1581
1582         if(part==NULL || pars==NULL || !psys_check_enabled(ob, psys))
1583                 return 0;
1584
1585         if(part->draw_as==PART_DRAW_OB || part->draw_as==PART_DRAW_GR || part->draw_as==PART_DRAW_NOT)
1586                 return 1;
1587
1588 /* 2. start initialising things */
1589         if(part->phystype==PART_PHYS_KEYED){
1590                 if(psys->flag & PSYS_FIRST_KEYED)
1591                         psys_count_keyed_targets(ob,psys);
1592                 else
1593                         return 1;
1594         }
1595
1596         psmd= psys_get_modifier(ob,psys);
1597         if(!(psmd->modifier.mode & eModifierMode_Render))
1598                 return 0;
1599
1600         if(G.rendering == 0) { /* preview render */
1601                 totchild = (int)((float)totchild * (float)part->disp / 100.0f);
1602         }
1603
1604         psys->flag|=PSYS_DRAWING;
1605
1606         rng= rng_new(psys->seed);
1607
1608         ma= give_render_material(re, ob, part->omat);
1609
1610         if(part->bb_ob)
1611                 bb_ob=part->bb_ob;
1612
1613         if(ma->ipo){
1614                 calc_ipo(ma->ipo, cfra);
1615                 execute_ipo((ID *)ma, ma->ipo);
1616         }
1617
1618         RE_set_customdata_names(obr, &psmd->dm->faceData);
1619         totuv=CustomData_number_of_layers(&psmd->dm->faceData,CD_MTFACE);
1620         totcol=CustomData_number_of_layers(&psmd->dm->faceData,CD_MCOL);
1621
1622         if(ma->texco & TEXCO_UV && totuv) {
1623                 uvco = MEM_callocN(totuv*2*sizeof(float),"particle_uvs");
1624
1625                 if(ma->strand_uvname[0]) {
1626                         override_uv= CustomData_get_named_layer_index(&psmd->dm->faceData,CD_MTFACE,ma->strand_uvname);
1627                         override_uv-= CustomData_get_layer_index(&psmd->dm->faceData,CD_MTFACE);
1628                 }
1629         }
1630
1631         if(totcol)
1632                 mcol = MEM_callocN(totcol*sizeof(MCol),"particle_mcols");
1633
1634         if(part->draw_as==PART_DRAW_BB){
1635                 int first_uv=CustomData_get_layer_index(&psmd->dm->faceData,CD_MTFACE);
1636
1637                 uv[0]=CustomData_get_named_layer_index(&psmd->dm->faceData,CD_MTFACE,psys->bb_uvname[0]);
1638                 if(uv[0]<0)
1639                         uv[0]=CustomData_get_active_layer_index(&psmd->dm->faceData,CD_MTFACE);
1640
1641                 uv[1]=CustomData_get_named_layer_index(&psmd->dm->faceData,CD_MTFACE,psys->bb_uvname[1]);
1642                 //if(uv[1]<0)
1643                 //      uv[1]=CustomData_get_active_layer_index(&psmd->dm->faceData,CD_MTFACE);
1644
1645                 uv[2]=CustomData_get_named_layer_index(&psmd->dm->faceData,CD_MTFACE,psys->bb_uvname[2]);
1646                 //if(uv[2]<0)
1647                 //      uv[2]=CustomData_get_active_layer_index(&psmd->dm->faceData,CD_MTFACE);
1648
1649                 if(first_uv>=0){
1650                         uv[0]-=first_uv;
1651                         uv[1]-=first_uv;
1652                         uv[2]-=first_uv;
1653                 }
1654         }
1655
1656         if(part->flag&PART_ABS_TIME && part->ipo){
1657                 calc_ipo(part->ipo, cfra);
1658                 execute_ipo((ID *)part, part->ipo);
1659         }
1660
1661         if(part->flag&PART_GLOB_TIME)
1662                 cfra=bsystem_time(0,(float)CFRA,0.0);
1663
1664         if(part->type==PART_REACTOR){
1665                 psys_get_reactor_target(ob, psys, &tob, &tpsys);
1666                 if(tpsys && (part->from==PART_FROM_PARTICLE || part->phystype==PART_PHYS_NO)){
1667                         psmd=psys_get_modifier(tob,tpsys);
1668                         tpart=tpsys->part;
1669                 }
1670         }
1671
1672         hasize = ma->hasize;
1673         seed = ma->seed1;
1674
1675         re->flag |= R_HALO;
1676
1677         MTC_Mat4MulMat4(mat, ob->obmat, re->viewmat);
1678         MTC_Mat4Invert(ob->imat, mat);  /* need to be that way, for imat texture */
1679         Mat3CpyMat4(nmat, ob->imat);
1680         Mat3Transp(nmat);
1681
1682         totpart=psys->totpart;
1683
1684         if(psys->pathcache){
1685                 path_possible=1;
1686                 keys_possible=1;
1687         }
1688         if(part->draw_as==PART_DRAW_PATH){
1689                 if(path_possible){
1690                         path_nbr=(int)pow(2.0,(double) part->ren_step);
1691                         //if(part->phystype==PART_PHYS_KEYED && (psys->flag&PSYS_BAKED)==0)
1692                         //      path_nbr*=psys->totkeyed;
1693
1694                         if(path_nbr) {
1695                                 if((ma->mode & (MA_HALO|MA_WIRE))==0) {
1696                                         orco= MEM_mallocN(3*sizeof(float)*(totpart+totchild), "particle orcos");
1697                                         set_object_orco(re, psys, orco);
1698                                 }
1699                                 path=1;
1700                         }
1701
1702                         if(part->draw&PART_DRAW_REN_ADAPT) {
1703                                 adapt=1;
1704                                 adapt_pix=(float)part->adapt_pix;
1705                                 adapt_angle=cos((float)part->adapt_angle*(float)(M_PI/180.0));
1706                         }
1707
1708                         if(re->r.renderer==R_INTERN && part->draw&PART_DRAW_REN_STRAND) {
1709                                 strandbuf= RE_addStrandBuffer(obr, (totpart+totchild)*(path_nbr+1));
1710                                 strandbuf->ma= ma;
1711                                 strandbuf->lay= ob->lay;
1712                                 Mat4CpyMat4(strandbuf->winmat, re->winmat);
1713                                 strandbuf->winx= re->winx;
1714                                 strandbuf->winy= re->winy;
1715                                 strandbuf->maxdepth= 2;
1716                                 strandbuf->adaptcos= cos((float)part->adapt_angle*(float)(M_PI/180.0));
1717                                 strandbuf->overrideuv= override_uv;
1718                                 strandbuf->minwidth= ma->strand_min;
1719
1720                                 if(ma->strand_widthfade == 0.0f)
1721                                         strandbuf->widthfade= 0.0f;
1722                                 else if(ma->strand_widthfade >= 1.0f)
1723                                         strandbuf->widthfade= 2.0f - ma->strand_widthfade;
1724                                 else
1725                                         strandbuf->widthfade= 1.0f/MAX2(ma->strand_widthfade, 1e-5f);
1726
1727                                 if(part->flag & PART_HAIR_BSPLINE)
1728                                         strandbuf->flag |= R_STRAND_BSPLINE;
1729                                 if(ma->mode & MA_STR_B_UNITS)
1730                                         strandbuf->flag |= R_STRAND_B_UNITS;
1731
1732                                 svert= strandbuf->vert;
1733
1734                                 if(re->r.mode & R_SPEED)
1735                                         dosurfacecache= 1;
1736                                 else if((re->wrld.mode & WO_AMB_OCC) && (re->wrld.ao_gather_method == WO_AOGATHER_APPROX))
1737                                         if(ma->amb != 0.0f)
1738                                                 dosurfacecache= 1;
1739
1740                                 totface= psmd->dm->getNumFaces(psmd->dm);
1741                                 origindex= psmd->dm->getFaceDataArray(psmd->dm, CD_ORIGINDEX);
1742                                 if(origindex) {
1743                                         for(a=0; a<totface; a++)
1744                                                 strandbuf->totbound= MAX2(strandbuf->totbound, origindex[a]);
1745                                         strandbuf->totbound++;
1746                                 }
1747                                 strandbuf->totbound++;
1748                                 strandbuf->bound= MEM_callocN(sizeof(StrandBound)*strandbuf->totbound, "StrandBound");
1749                                 sbound= strandbuf->bound;
1750                                 sbound->start= sbound->end= 0;
1751                         }
1752                 }
1753         }
1754         else if(keys_possible && part->draw&PART_DRAW_KEYS){
1755                 path_nbr=part->keys_step;
1756                 if(path_nbr==0)
1757                         baked_keys=1;
1758         }
1759
1760         if(orco==0){
1761                 orco=MEM_mallocN(3*sizeof(float),"particle orco");
1762                 orco1=1;
1763         }
1764
1765         if(path_nbr==0)
1766                 psys->lattice=psys_get_lattice(ob,psys);
1767
1768 /* 3. start creating renderable things */
1769         for(a=0,pa=pars; a<totpart+totchild; a++, pa++, seed++) {
1770                 random = rng_getFloat(rng);
1771
1772                 if(a<totpart){
1773                         if(pa->flag & PARS_UNEXIST) continue;
1774
1775                         pa_time=(cfra-pa->time)/pa->lifetime;
1776                         if((part->flag&PART_ABS_TIME)==0){
1777                                 if(ma->ipo){
1778                                         /* correction for lifetime */
1779                                         calc_ipo(ma->ipo, 100.0f*pa_time);
1780                                         execute_ipo((ID *)ma, ma->ipo);
1781                                 }
1782                                 if(part->ipo){
1783                                         /* correction for lifetime */
1784                                         calc_ipo(part->ipo, 100.0f*pa_time);
1785                                         execute_ipo((ID *)part, part->ipo);
1786                                 }
1787                         }
1788
1789                         hasize = ma->hasize;
1790
1791                         /* get orco */
1792                         if(tpsys && (part->from==PART_FROM_PARTICLE || part->phystype==PART_PHYS_NO)){
1793                                 tpa=tpsys->particles+pa->num;
1794                                 psys_particle_on_emitter(ob, psmd,tpart->from,tpa->num,pa->num_dmcache,tpa->fuv,tpa->foffset,co,nor,0,0,orco,0);
1795                         }
1796                         else
1797                                 psys_particle_on_emitter(ob, psmd,part->from,pa->num,pa->num_dmcache,pa->fuv,pa->foffset,co,nor,0,0,orco,0);
1798
1799                         num= pa->num_dmcache;
1800
1801                         if(num == DMCACHE_NOTFOUND)
1802                                 if(pa->num < psmd->dm->getNumFaces(psmd->dm))
1803                                         num= pa->num;
1804
1805                         if(uvco && ELEM(part->from,PART_FROM_FACE,PART_FROM_VOLUME)){
1806                                 for(i=0; i<totuv; i++){
1807                                         if(num != DMCACHE_NOTFOUND) {
1808                                                 MFace *mface=psmd->dm->getFaceData(psmd->dm,num,CD_MFACE);
1809                                                 mtface=(MTFace*)CustomData_get_layer_n(&psmd->dm->faceData,CD_MTFACE,i);
1810                                                 mtface+=num;
1811
1812                                                 psys_interpolate_uvs(mtface,mface->v4,pa->fuv,uvco+2*i);
1813                                         }
1814                                         else {
1815                                                 uvco[2*i]= 0.0f;
1816                                                 uvco[2*i + 1]= 0.0f;
1817                                         }
1818                                 }
1819                         }
1820                         if(mcol && ELEM(part->from,PART_FROM_FACE,PART_FROM_VOLUME)){
1821                                 for(i=0; i<totcol; i++){
1822                                         if(num != DMCACHE_NOTFOUND) {
1823                                                 MFace *mface=psmd->dm->getFaceData(psmd->dm,num,CD_MFACE);
1824                                                 MCol *mc=(MCol*)CustomData_get_layer_n(&psmd->dm->faceData,CD_MCOL,i);
1825                                                 mc+=num*4;
1826
1827                                                 psys_interpolate_mcol(mc,mface->v4,pa->fuv,mcol+i);
1828                                         }
1829                                         else
1830                                                 memset(&mcol[i], 0, sizeof(MCol));
1831                                 }
1832                         }
1833
1834                         pa_size=pa->size;
1835
1836                         r_tilt=1.0f+pa->r_ave[0];
1837
1838                         if(path_nbr){
1839                                 cache = psys->pathcache[a];
1840                                 max_k = (int)cache->steps;
1841                         }
1842
1843                         if(totchild && (part->draw&PART_DRAW_PARENT)==0) continue;
1844                 }
1845                 else {
1846                         ChildParticle *cpa= psys->child+a-totpart;
1847
1848                         pa_time=psys_get_child_time(psys, cpa, cfra);
1849
1850                         if((part->flag&PART_ABS_TIME)==0){
1851                                 if(ma->ipo){
1852                                         /* correction for lifetime */
1853                                         calc_ipo(ma->ipo, 100.0f*pa_time);
1854                                         execute_ipo((ID *)ma, ma->ipo);
1855                                 }
1856                                 if(part->ipo){
1857                                         /* correction for lifetime */
1858                                         calc_ipo(part->ipo, 100.0f*pa_time);
1859                                         execute_ipo((ID *)part, part->ipo);
1860                                 }
1861                         }
1862
1863                         pa_size=psys_get_child_size(psys, cpa, cfra, &pa_time);
1864
1865                         r_tilt=2.0f*cpa->rand[2];
1866
1867                         num= cpa->num;
1868
1869                         /* get orco */
1870                         if(part->childtype == PART_CHILD_FACES) {
1871                                 psys_particle_on_emitter(ob, psmd,
1872                                         PART_FROM_FACE, cpa->num,DMCACHE_ISCHILD,
1873                                         cpa->fuv,cpa->foffset,co,nor,0,0,orco,0);
1874                         }
1875                         else {
1876                                 ParticleData *par = psys->particles + cpa->parent;
1877                                 psys_particle_on_emitter(ob, psmd, part->from,
1878                                         par->num,DMCACHE_ISCHILD,par->fuv,
1879                                         par->foffset,co,nor,0,0,orco,0);
1880                         }
1881
1882                         if(uvco){
1883                                 if(part->from!=PART_FROM_PARTICLE && part->childtype==PART_CHILD_FACES){
1884                                         for(i=0; i<totuv; i++){
1885                                                 if(part->childtype==PART_CHILD_FACES){
1886                                                         MFace *mface=psmd->dm->getFaceData(psmd->dm,cpa->num,CD_MFACE);
1887
1888                                                         mtface=(MTFace*)CustomData_get_layer_n(&psmd->dm->faceData,CD_MTFACE,i);
1889                                                         mtface+=cpa->num;
1890
1891                                                         psys_interpolate_uvs(mtface,mface->v4,cpa->fuv,uvco+2*i);
1892                                                 }
1893                                                 else{
1894                                                         uvco[2*i]=uvco[2*i+1]=0.0f;
1895                                                 }
1896                                         }
1897                                 }
1898                                 else if(ELEM(part->from,PART_FROM_FACE,PART_FROM_VOLUME)){
1899                                         ParticleData *parent = psys->particles + cpa->parent;
1900                                         num= parent->num_dmcache;
1901
1902                                         if(num == DMCACHE_NOTFOUND)
1903                                                 if(parent->num < psmd->dm->getNumFaces(psmd->dm))
1904                                                         num= parent->num;
1905
1906                                         for(i=0; i<totuv; i++) {
1907                                                 if(num != DMCACHE_NOTFOUND) {
1908                                                         MFace *mface=psmd->dm->getFaceData(psmd->dm,num,CD_MFACE);
1909                                                         mtface=(MTFace*)CustomData_get_layer_n(&psmd->dm->faceData,CD_MTFACE,i);
1910                                                         mtface+=num;
1911                                                         psys_interpolate_uvs(mtface,mface->v4,parent->fuv,uvco+2*i);
1912                                                 }
1913                                                 else {
1914                                                         uvco[2*i]= 0.0f;
1915                                                         uvco[2*i + 1]= 0.0f;
1916                                                 }
1917                                         }
1918                                 }
1919                         }
1920
1921                         if(mcol){
1922                                 if(part->from!=PART_FROM_PARTICLE && part->childtype==PART_CHILD_FACES){
1923                                         for(i=0; i<totcol; i++){
1924                                                 if(part->childtype==PART_CHILD_FACES){
1925                                                         MFace *mface=psmd->dm->getFaceData(psmd->dm,cpa->num,CD_MFACE);
1926                                                         MCol *mc=(MCol*)CustomData_get_layer_n(&psmd->dm->faceData,CD_MCOL,i);
1927                                                         mc+=cpa->num*4;
1928
1929                                                         psys_interpolate_mcol(mc,mface->v4,cpa->fuv,mcol+i);
1930                                                 }
1931                                                 else
1932                                                         memset(&mcol[i], 0, sizeof(MCol));
1933                                         }
1934                                 }
1935                                 else if(ELEM(part->from,PART_FROM_FACE,PART_FROM_VOLUME)){
1936                                         ParticleData *parent = psys->particles + cpa->parent;
1937                                         num= parent->num_dmcache;
1938
1939                                         if(num == DMCACHE_NOTFOUND)
1940                                                 if(parent->num < psmd->dm->getNumFaces(psmd->dm))
1941                                                         num= parent->num;
1942
1943                                         for(i=0; i<totcol; i++){
1944                                                 if(num != DMCACHE_NOTFOUND) {
1945                                                         MFace *mface=psmd->dm->getFaceData(psmd->dm,num,CD_MFACE);
1946                                                         MCol *mc=(MCol*)CustomData_get_layer_n(&psmd->dm->faceData,CD_MCOL,i);
1947                                                         mc+=num*4;
1948
1949                                                         psys_interpolate_mcol(mc,mface->v4,parent->fuv,mcol+i);
1950                                                 }
1951                                                 else
1952                                                         memset(&mcol[i], 0, sizeof(MCol));
1953                                         }
1954                                 }
1955                         }
1956
1957                         dosimplify= psys_render_simplify_params(psys, cpa, simplify);
1958
1959                         if(path_nbr) {
1960                                 cache = psys->childcache[a-totpart];
1961                                 max_k = (int)cache->steps;
1962                         }
1963
1964                         if(strandbuf) {
1965                                 if(origindex[cpa->num]+1 > sbound - strandbuf->bound) {
1966                                         sbound= strandbuf->bound + origindex[cpa->num]+1;
1967                                         sbound->start= sbound->end= obr->totstrand;
1968                                 }
1969                         }
1970                 }
1971
1972                 /* surface normal shading setup */
1973                 if(ma->mode_l & MA_STR_SURFDIFF) {
1974                         Mat3MulVecfl(nmat, nor);
1975                         surfnor= nor;
1976                 }
1977                 else
1978                         surfnor= NULL;
1979
1980                 /* strand render setup */
1981                 if(strandbuf) {
1982                         strand= RE_findOrAddStrand(obr, obr->totstrand++);
1983                         strand->buffer= strandbuf;
1984                         strand->vert= svert;
1985                         VECCOPY(strand->orco, orco);
1986
1987                         if(dosimplify) {
1988                                 float *ssimplify= RE_strandren_get_simplify(obr, strand, 1);
1989                                 ssimplify[0]= simplify[0];
1990                                 ssimplify[1]= simplify[1];
1991                         }
1992
1993                         if(surfnor) {
1994                                 float *snor= RE_strandren_get_surfnor(obr, strand, 1);
1995                                 VECCOPY(snor, surfnor);
1996                         }
1997
1998                         if(dosurfacecache && num >= 0) {
1999                                 int *facenum= RE_strandren_get_face(obr, strand, 1);
2000                                 *facenum= num;
2001                         }
2002
2003                         if(uvco) {
2004                                 for(i=0; i<totuv; i++) {
2005                                         if(i != override_uv) {
2006                                                 float *uv= RE_strandren_get_uv(obr, strand, i, NULL, 1);
2007
2008                                                 uv[0]= uvco[2*i];
2009                                                 uv[1]= uvco[2*i+1];
2010                                         }
2011                                 }
2012                         }
2013                         if(mcol) {
2014                                 for(i=0; i<totcol; i++) {
2015                                         MCol *mc= RE_strandren_get_mcol(obr, strand, i, NULL, 1);
2016                                         *mc = mcol[i];
2017                                 }
2018                         }
2019
2020                         sbound->end++;
2021                 }
2022
2023                 /* strandco computation setup */
2024                 if(path_nbr) {
2025                         strandlen= 0.0f;
2026                         curlen= 0.0f;
2027                         for(k=1; k<=path_nbr; k++)
2028                                 if(k<=max_k)
2029                                         strandlen += VecLenf((cache+k-1)->co, (cache+k)->co);
2030                 }
2031
2032                 for(k=0; k<=path_nbr; k++){
2033                         if(path_nbr){
2034                                 if(k<=max_k){
2035                                         //bti->convert_bake_key(bsys,cache+k,0,(void*)&state);
2036                                         //copy_particle_key(&state,cache+k,0);
2037                                         VECCOPY(state.co,(cache+k)->co);
2038                                         VECCOPY(state.vel,(cache+k)->vel);
2039                                 }
2040                                 else
2041                                         continue;
2042
2043                                 if(k > 0)
2044                                         curlen += VecLenf((cache+k-1)->co, (cache+k)->co);
2045                                 time= curlen/strandlen;
2046                         }
2047                         else{
2048                                 time=0.0f;
2049                                 state.time=cfra;
2050                                 if(psys_get_particle_state(ob,psys,a,&state,0)==0)
2051                                         continue;
2052                         }
2053
2054                         VECCOPY(loc,state.co);
2055                         if(part->draw_as!=PART_DRAW_BB)
2056                                 MTC_Mat4MulVecfl(re->viewmat,loc);
2057
2058                         if(part->draw_as==PART_DRAW_LINE) {
2059                                 VECCOPY(vel,state.vel);
2060                                 //VECADD(vel,vel,state.co);
2061                                 MTC_Mat4Mul3Vecfl(re->viewmat,vel);
2062                                 //VECSUB(vel,vel,loc);
2063                                 Normalize(vel);
2064                                 if(part->draw & PART_DRAW_VEL_LENGTH)
2065                                         VecMulf(vel,VecLength(state.vel));
2066                                 VECADDFAC(loc0,loc,vel,-part->draw_line[0]);
2067                                 VECADDFAC(loc1,loc,vel,part->draw_line[1]);
2068
2069                                 render_new_particle(re,obr,psmd->dm,ma,1,0,1,0.0f,loc0,loc1,
2070                                                                         orco,surfnor,totuv,uvco,totcol,mcol,hasize,seed,override_uv,0,0,0);
2071                         }
2072                         else if(part->draw_as==PART_DRAW_BB) {
2073                                 VECCOPY(vel,state.vel);
2074                                 //MTC_Mat4Mul3Vecfl(re->viewmat,vel);
2075                                 particle_billboard(re,obr,ma,bb_ob,loc,vel,pa_size,part->bb_tilt*(1.0f-part->bb_rand_tilt*r_tilt),
2076                                                                         part->bb_align,part->draw&PART_DRAW_BB_LOCK,
2077                                                                         a,totpart+totchild,part->bb_uv_split,part->bb_anim,part->bb_split_offset,random,pa_time,part->bb_offset,uv);
2078                         }
2079                         else if(strandbuf) {
2080                                 VECCOPY(svert->co, loc);
2081                                 svert->strandco= -1.0f + 2.0f*time;
2082                                 svert++;
2083                                 strand->totvert++;
2084                         }
2085                         else{
2086                                 if(k==1){
2087                                         VECSUB(loc0,loc1,loc);
2088                                         VECADD(loc0,loc1,loc0);
2089                                         render_new_particle(re,obr,psmd->dm,ma,path,1,0,0.0f,loc1,loc0,
2090                                                                                 orco,surfnor,totuv,uvco,totcol,mcol,hasize,seed,override_uv,
2091                                                                                 adapt,adapt_angle,adapt_pix);
2092                                 }
2093
2094                                 if(path_nbr==0 || k)
2095                                         render_new_particle(re,obr,psmd->dm,ma,path,0,0,time,loc,loc1,
2096                                                                                 orco,surfnor,totuv,uvco,totcol,mcol,hasize,seed,override_uv,
2097                                                                                 adapt,adapt_angle,adapt_pix);
2098
2099                                 VECCOPY(loc1,loc);
2100                         }
2101                 }
2102
2103                 if(orco1==0)
2104                         orco+=3;
2105
2106                 if(re->test_break())
2107                         break;
2108         }
2109
2110         if(dosurfacecache)
2111                 strandbuf->surface= cache_strand_surface(re, obr, psmd->dm, mat, timeoffset);
2112
2113 /* 4. clean up */
2114         if(ma) do_mat_ipo(ma);
2115
2116         if(orco1)
2117                 MEM_freeN(orco);
2118
2119         if(uvco)
2120                 MEM_freeN(uvco);
2121
2122         if(mcol)
2123                 MEM_freeN(mcol);
2124
2125         if(uv_name)
2126                 MEM_freeN(uv_name);
2127
2128         if(states)
2129                 MEM_freeN(states);
2130
2131         rng_free(rng);
2132
2133         psys->flag &= ~PSYS_DRAWING;
2134
2135         if(psys->lattice){
2136                 end_latt_deform();
2137                 psys->lattice=0;
2138         }
2139
2140         if(path && (ma->mode_l & MA_TANGENT_STR)==0)
2141                 calc_vertexnormals(re, obr, 0, 0);
2142
2143         return 1;
2144 }
2145
2146 /* ------------------------------------------------------------------------- */
2147 /* Halo's                                                                                                                                */
2148 /* ------------------------------------------------------------------------- */
2149
2150 static void make_render_halos(Render *re, ObjectRen *obr, Mesh *me, int totvert, MVert *mvert, Material *ma, float *orco)
2151 {
2152         Object *ob= obr->ob;
2153         HaloRen *har;
2154         float xn, yn, zn, nor[3], view[3];
2155         float vec[3], hasize, mat[4][4], imat[3][3];
2156         int a, ok, seed= ma->seed1;
2157
2158         MTC_Mat4MulMat4(mat, ob->obmat, re->viewmat);
2159         MTC_Mat3CpyMat4(imat, ob->imat);
2160
2161         re->flag |= R_HALO;
2162
2163         for(a=0; a<totvert; a++, mvert++) {
2164                 ok= 1;
2165
2166                 if(ok) {
2167                         hasize= ma->hasize;
2168
2169                         VECCOPY(vec, mvert->co);
2170                         MTC_Mat4MulVecfl(mat, vec);
2171
2172                         if(ma->mode & MA_HALOPUNO) {
2173                                 xn= mvert->no[0];
2174                                 yn= mvert->no[1];
2175                                 zn= mvert->no[2];
2176
2177                                 /* transpose ! */
2178                                 nor[0]= imat[0][0]*xn+imat[0][1]*yn+imat[0][2]*zn;
2179                                 nor[1]= imat[1][0]*xn+imat[1][1]*yn+imat[1][2]*zn;
2180                                 nor[2]= imat[2][0]*xn+imat[2][1]*yn+imat[2][2]*zn;
2181                                 Normalize(nor);
2182
2183                                 VECCOPY(view, vec);
2184                                 Normalize(view);
2185
2186                                 zn= nor[0]*view[0]+nor[1]*view[1]+nor[2]*view[2];
2187                                 if(zn>=0.0) hasize= 0.0;
2188                                 else hasize*= zn*zn*zn*zn;
2189                         }
2190
2191                         if(orco) har= RE_inithalo(re, obr, ma, vec, NULL, orco, hasize, 0.0, seed);
2192                         else har= RE_inithalo(re, obr, ma, vec, NULL, mvert->co, hasize, 0.0, seed);
2193                         if(har) har->lay= ob->lay;
2194                 }
2195                 if(orco) orco+= 3;
2196                 seed++;
2197         }
2198 }
2199
2200 static int verghalo(const void *a1, const void *a2)
2201 {
2202         const HaloRen *har1= *(const HaloRen**)a1;
2203         const HaloRen *har2= *(const HaloRen**)a2;
2204
2205         if(har1->zs < har2->zs) return 1;
2206         else if(har1->zs > har2->zs) return -1;
2207         return 0;
2208 }
2209
2210 static void sort_halos(Render *re, int totsort)
2211 {
2212         ObjectRen *obr;
2213         HaloRen *har= NULL, **haso;
2214         int a;
2215
2216         if(re->tothalo==0) return;
2217
2218         re->sortedhalos= MEM_callocN(sizeof(HaloRen*)*re->tothalo, "sorthalos");
2219         haso= re->sortedhalos;
2220
2221         for(obr=re->objecttable.first; obr; obr=obr->next) {
2222                 for(a=0; a<obr->tothalo; a++) {
2223                         if((a & 255)==0) har= obr->bloha[a>>8];
2224                         else har++;
2225
2226                         *(haso++)= har;
2227                 }
2228         }
2229
2230         qsort(re->sortedhalos, totsort, sizeof(HaloRen*), verghalo);
2231 }
2232
2233 /* ------------------------------------------------------------------------- */
2234 /* Displacement Mapping                                                                                                          */
2235 /* ------------------------------------------------------------------------- */
2236
2237 static short test_for_displace(Render *re, Object *ob)
2238 {
2239         /* return 1 when this object uses displacement textures. */
2240         Material *ma;
2241         int i;
2242
2243         for (i=1; i<=ob->totcol; i++) {
2244                 ma=give_render_material(re, ob, i);
2245                 /* ma->mapto is ORed total of all mapto channels */
2246                 if(ma && (ma->mapto & MAP_DISPLACE)) return 1;
2247         }
2248         return 0;
2249 }
2250
2251 static void displace_render_vert(Render *re, ObjectRen *obr, ShadeInput *shi, VertRen *vr, int vindex, float *scale, float mat[][4], float imat[][3])
2252 {
2253         MTFace *tface;
2254         short texco= shi->mat->texco;
2255         float sample=0, displace[3];
2256         char *name;
2257         int i;
2258
2259         /* shi->co is current render coord, just make sure at least some vector is here */
2260         VECCOPY(shi->co, vr->co);
2261         /* vertex normal is used for textures type 'col' and 'var' */
2262         VECCOPY(shi->vn, vr->n);
2263
2264         if(mat)
2265                 Mat4MulVecfl(mat, shi->co);
2266
2267         if(imat) {
2268                 shi->vn[0]= imat[0][0]*vr->n[0]+imat[0][1]*vr->n[1]+imat[0][2]*vr->n[2];
2269                 shi->vn[1]= imat[1][0]*vr->n[0]+imat[1][1]*vr->n[1]+imat[1][2]*vr->n[2];
2270                 shi->vn[2]= imat[2][0]*vr->n[0]+imat[2][1]*vr->n[1]+imat[2][2]*vr->n[2];
2271         }
2272
2273         if (texco & TEXCO_UV) {
2274                 shi->totuv= 0;
2275                 shi->actuv= obr->actmtface;
2276
2277                 for (i=0; (tface=RE_vlakren_get_tface(obr, shi->vlr, i, &name, 0)); i++) {
2278                         ShadeInputUV *suv= &shi->uv[i];
2279
2280                         /* shi.uv needs scale correction from tface uv */
2281                         suv->uv[0]= 2*tface->uv[vindex][0]-1.0f;
2282                         suv->uv[1]= 2*tface->uv[vindex][1]-1.0f;
2283                         suv->uv[2]= 0.0f;
2284                         suv->name= name;
2285                         shi->totuv++;
2286                 }
2287         }
2288
2289         /* set all rendercoords, 'texco' is an ORed value for all textures needed */
2290         if ((texco & TEXCO_ORCO) && (vr->orco)) {
2291                 VECCOPY(shi->lo, vr->orco);
2292         }
2293         if (texco & TEXCO_STICKY) {
2294                 float *sticky= RE_vertren_get_sticky(obr, vr, 0);
2295                 if(sticky) {
2296                         shi->sticky[0]= sticky[0];
2297                         shi->sticky[1]= sticky[1];
2298                         shi->sticky[2]= 0.0f;
2299                 }
2300         }
2301         if (texco & TEXCO_GLOB) {
2302                 VECCOPY(shi->gl, shi->co);
2303                 MTC_Mat4MulVecfl(re->viewinv, shi->gl);
2304         }
2305         if (texco & TEXCO_NORM) {
2306                 VECCOPY(shi->orn, shi->vn);
2307         }
2308         if(texco & TEXCO_REFL) {
2309                 /* not (yet?) */
2310         }
2311
2312         shi->displace[0]= shi->displace[1]= shi->displace[2]= 0.0;
2313
2314         do_material_tex(shi);
2315
2316         //printf("no=%f, %f, %f\nbefore co=%f, %f, %f\n", vr->n[0], vr->n[1], vr->n[2],
2317         //vr->co[0], vr->co[1], vr->co[2]);
2318
2319         displace[0]= shi->displace[0] * scale[0];
2320         displace[1]= shi->displace[1] * scale[1];
2321         displace[2]= shi->displace[2] * scale[2];
2322
2323         if(mat)
2324                 Mat3MulVecfl(imat, displace);
2325
2326         /* 0.5 could become button once?  */
2327         vr->co[0] += displace[0];
2328         vr->co[1] += displace[1];
2329         vr->co[2] += displace[2];
2330
2331         //printf("after co=%f, %f, %f\n", vr->co[0], vr->co[1], vr->co[2]);
2332
2333         /* we just don't do this vertex again, bad luck for other face using same vertex with
2334                 different material... */
2335         vr->flag |= 1;
2336
2337         /* Pass sample back so displace_face can decide which way to split the quad */
2338         sample  = shi->displace[0]*shi->displace[0];
2339         sample += shi->displace[1]*shi->displace[1];
2340         sample += shi->displace[2]*shi->displace[2];
2341
2342         vr->accum=sample;
2343         /* Should be sqrt(sample), but I'm only looking for "bigger".  Save the cycles. */
2344         return;
2345 }
2346
2347 static void displace_render_face(Render *re, ObjectRen *obr, VlakRen *vlr, float *scale, float mat[][4], float imat[][3])
2348 {
2349         ShadeInput shi;
2350
2351         /* Warning, This is not that nice, and possibly a bit slow,
2352         however some variables were not initialized properly in, unless using shade_input_initialize(...), we need to do a memset */
2353         memset(&shi, 0, sizeof(ShadeInput));
2354         /* end warning! - Campbell */
2355
2356         /* set up shadeinput struct for multitex() */
2357
2358         /* memset above means we dont need this */
2359         /*shi.osatex= 0;*/              /* signal not to use dx[] and dy[] texture AA vectors */
2360
2361         shi.vlr= vlr;           /* current render face */
2362         shi.mat= vlr->mat;              /* current input material */
2363
2364         /* Displace the verts, flag is set when done */
2365         if (!vlr->v1->flag)
2366                 displace_render_vert(re, obr, &shi, vlr->v1,0,  scale, mat, imat);
2367
2368         if (!vlr->v2->flag)
2369                 displace_render_vert(re, obr, &shi, vlr->v2, 1, scale, mat, imat);
2370
2371         if (!vlr->v3->flag)
2372                 displace_render_vert(re, obr, &shi, vlr->v3, 2, scale, mat, imat);
2373
2374         if (vlr->v4) {
2375                 if (!vlr->v4->flag)
2376                         displace_render_vert(re, obr, &shi, vlr->v4, 3, scale, mat, imat);
2377
2378                 /*      closest in displace value.  This will help smooth edges.   */
2379                 if ( fabs(vlr->v1->accum - vlr->v3->accum) > fabs(vlr->v2->accum - vlr->v4->accum))
2380                         vlr->flag |= R_DIVIDE_24;
2381                 else vlr->flag &= ~R_DIVIDE_24;
2382         }
2383
2384         /* Recalculate the face normal  - if flipped before, flip now */
2385         if(vlr->v4) {
2386                 CalcNormFloat4(vlr->v4->co, vlr->v3->co, vlr->v2->co, vlr->v1->co, vlr->n);
2387         }
2388         else {
2389                 CalcNormFloat(vlr->v3->co, vlr->v2->co, vlr->v1->co, vlr->n);
2390         }
2391 }
2392
2393 static void do_displacement(Render *re, ObjectRen *obr, float mat[][4], float imat[][3])
2394 {
2395         VertRen *vr;
2396         VlakRen *vlr;
2397 //      float min[3]={1e30, 1e30, 1e30}, max[3]={-1e30, -1e30, -1e30};
2398         float scale[3]={1.0f, 1.0f, 1.0f}, temp[3];//, xn
2399         int i; //, texflag=0;
2400         Object *obt;
2401
2402         /* Object Size with parenting */
2403         obt=obr->ob;
2404         while(obt){
2405                 VecAddf(temp, obt->size, obt->dsize);
2406                 scale[0]*=temp[0]; scale[1]*=temp[1]; scale[2]*=temp[2];
2407                 obt=obt->parent;
2408         }
2409
2410         /* Clear all flags */
2411         for(i=0; i<obr->totvert; i++){
2412                 vr= RE_findOrAddVert(obr, i);
2413                 vr->flag= 0;
2414         }
2415
2416         for(i=0; i<obr->totvlak; i++){
2417                 vlr=RE_findOrAddVlak(obr, i);
2418                 displace_render_face(re, obr, vlr, scale, mat, imat);
2419         }
2420
2421         /* Recalc vertex normals */
2422         calc_vertexnormals(re, obr, 0, 0);
2423 }
2424
2425 /* ------------------------------------------------------------------------- */
2426 /* Metaball                                                                                                                              */
2427 /* ------------------------------------------------------------------------- */
2428
2429 static void init_render_mball(Render *re, ObjectRen *obr)
2430 {
2431         Object *ob= obr->ob;
2432         DispList *dl;
2433         VertRen *ver;
2434         VlakRen *vlr, *vlr1;
2435         Material *ma;
2436         float *data, *nors, *orco, mat[4][4], imat[3][3], xn, yn, zn;
2437         int a, need_orco, vlakindex, *index;
2438
2439         if (ob!=find_basis_mball(ob))
2440                 return;
2441
2442         MTC_Mat4MulMat4(mat, ob->obmat, re->viewmat);
2443         MTC_Mat4Invert(ob->imat, mat);
2444         MTC_Mat3CpyMat4(imat, ob->imat);
2445
2446         ma= give_render_material(re, ob, 1);
2447
2448         need_orco= 0;
2449         if(ma->texco & TEXCO_ORCO) {
2450                 need_orco= 1;
2451         }
2452
2453         makeDispListMBall(ob);
2454         dl= ob->disp.first;
2455         if(dl==0) return;
2456
2457         data= dl->verts;
2458         nors= dl->nors;
2459         orco= get_object_orco(re, ob);
2460
2461         for(a=0; a<dl->nr; a++, data+=3, nors+=3, orco+=3) {
2462
2463                 ver= RE_findOrAddVert(obr, obr->totvert++);
2464                 VECCOPY(ver->co, data);
2465                 MTC_Mat4MulVecfl(mat, ver->co);
2466
2467                 /* render normals are inverted */
2468                 xn= -nors[0];
2469                 yn= -nors[1];
2470                 zn= -nors[2];
2471
2472                 /* transpose ! */
2473                 ver->n[0]= imat[0][0]*xn+imat[0][1]*yn+imat[0][2]*zn;
2474                 ver->n[1]= imat[1][0]*xn+imat[1][1]*yn+imat[1][2]*zn;
2475                 ver->n[2]= imat[2][0]*xn+imat[2][1]*yn+imat[2][2]*zn;
2476                 Normalize(ver->n);
2477                 //if(ob->transflag & OB_NEG_SCALE) VecMulf(ver->n. -1.0);
2478
2479                 if(need_orco) ver->orco= orco;
2480         }
2481
2482         index= dl->index;
2483         for(a=0; a<dl->parts; a++, index+=4) {
2484
2485                 vlr= RE_findOrAddVlak(obr, obr->totvlak++);
2486                 vlr->v1= RE_findOrAddVert(obr, index[0]);
2487                 vlr->v2= RE_findOrAddVert(obr, index[1]);
2488                 vlr->v3= RE_findOrAddVert(obr, index[2]);
2489                 vlr->v4= 0;
2490
2491                 if(ob->transflag & OB_NEG_SCALE)
2492                         CalcNormFloat(vlr->v1->co, vlr->v2->co, vlr->v3->co, vlr->n);
2493                 else
2494                         CalcNormFloat(vlr->v3->co, vlr->v2->co, vlr->v1->co, vlr->n);
2495
2496                 vlr->mat= ma;
2497                 vlr->flag= ME_SMOOTH+R_NOPUNOFLIP;
2498                 vlr->ec= 0;
2499
2500                 /* mball -too bad- always has triangles, because quads can be non-planar */
2501                 if(index[3] && index[3]!=index[2]) {
2502                         vlr1= RE_findOrAddVlak(obr, obr->totvlak++);
2503                         vlakindex= vlr1->index;
2504                         *vlr1= *vlr;
2505                         vlr1->index= vlakindex;
2506                         vlr1->v2= vlr1->v3;
2507                         vlr1->v3= RE_findOrAddVert(obr, index[3]);
2508                         if(ob->transflag & OB_NEG_SCALE)
2509                                 CalcNormFloat(vlr1->v1->co, vlr1->v2->co, vlr1->v3->co, vlr1->n);
2510                         else
2511                                 CalcNormFloat(vlr1->v3->co, vlr1->v2->co, vlr1->v1->co, vlr1->n);
2512                 }
2513         }
2514
2515         /* enforce display lists remade */
2516         freedisplist(&ob->disp);
2517
2518         /* this enforces remake for real, orco displist is small (in scale) */
2519         ob->recalc |= OB_RECALC_DATA;
2520 }
2521
2522 /* ------------------------------------------------------------------------- */
2523 /* Surfaces and Curves                                                                                                           */
2524 /* ------------------------------------------------------------------------- */
2525
2526 /* returns amount of vertices added for orco */
2527 static int dl_surf_to_renderdata(ObjectRen *obr, DispList *dl, Material **matar, float *orco, float mat[4][4])
2528 {
2529         Object *ob= obr->ob;
2530         VertRen *v1, *v2, *v3, *v4, *ver;
2531         VlakRen *vlr, *vlr1, *vlr2, *vlr3;
2532         Curve *cu= ob->data;
2533         float *data, n1[3], flen;
2534         int u, v, orcoret= 0;
2535         int p1, p2, p3, p4, a;
2536         int sizeu, nsizeu, sizev, nsizev;
2537         int startvert, startvlak;
2538
2539         startvert= obr->totvert;
2540         nsizeu = sizeu = dl->parts; nsizev = sizev = dl->nr;
2541
2542         data= dl->verts;
2543         for (u = 0; u < sizeu; u++) {
2544                 v1 = RE_findOrAddVert(obr, obr->totvert++); /* save this for possible V wrapping */
2545                 VECCOPY(v1->co, data); data += 3;
2546                 if(orco) {
2547                         v1->orco= orco; orco+= 3; orcoret++;
2548                 }
2549                 MTC_Mat4MulVecfl(mat, v1->co);
2550
2551                 for (v = 1; v < sizev; v++) {
2552                         ver= RE_findOrAddVert(obr, obr->totvert++);
2553                         VECCOPY(ver->co, data); data += 3;
2554                         if(orco) {
2555                                 ver->orco= orco; orco+= 3; orcoret++;
2556                         }
2557                         MTC_Mat4MulVecfl(mat, ver->co);
2558                 }
2559                 /* if V-cyclic, add extra vertices at end of the row */
2560                 if (dl->flag & DL_CYCL_U) {
2561                         ver= RE_findOrAddVert(obr, obr->totvert++);
2562                         VECCOPY(ver->co, v1->co);
2563                         if(orco) {
2564                                 ver->orco= orco; orco+=3; orcoret++; //orcobase + 3*(u*sizev + 0);
2565                         }
2566                 }
2567         }
2568
2569         /* Done before next loop to get corner vert */
2570         if (dl->flag & DL_CYCL_U) nsizev++;
2571         if (dl->flag & DL_CYCL_V) nsizeu++;
2572
2573         /* if U cyclic, add extra row at end of column */
2574         if (dl->flag & DL_CYCL_V) {
2575                 for (v = 0; v < nsizev; v++) {
2576                         v1= RE_findOrAddVert(obr, startvert + v);
2577                         ver= RE_findOrAddVert(obr, obr->totvert++);
2578                         VECCOPY(ver->co, v1->co);
2579                         if(orco) {
2580                                 ver->orco= orco; orco+=3; orcoret++; //ver->orco= orcobase + 3*(0*sizev + v);
2581                         }
2582                 }
2583         }
2584
2585         sizeu = nsizeu;
2586         sizev = nsizev;
2587
2588         startvlak= obr->totvlak;
2589
2590         for(u = 0; u < sizeu - 1; u++) {
2591                 p1 = startvert + u * sizev; /* walk through face list */
2592                 p2 = p1 + 1;
2593                 p3 = p2 + sizev;
2594                 p4 = p3 - 1;
2595
2596                 for(v = 0; v < sizev - 1; v++) {
2597                         v1= RE_findOrAddVert(obr, p1);
2598                         v2= RE_findOrAddVert(obr, p2);
2599                         v3= RE_findOrAddVert(obr, p3);
2600                         v4= RE_findOrAddVert(obr, p4);
2601
2602                         vlr= RE_findOrAddVlak(obr, obr->totvlak++);
2603                         vlr->v1= v1; vlr->v2= v2; vlr->v3= v3; vlr->v4= v4;
2604
2605                         flen= CalcNormFloat4(vlr->v4->co, vlr->v3->co, vlr->v2->co, vlr->v1->co, n1);
2606                         VECCOPY(vlr->n, n1);
2607
2608                         vlr->mat= matar[ dl->col];
2609                         vlr->ec= ME_V1V2+ME_V2V3;
2610                         vlr->flag= dl->rt;
2611                         if( (cu->flag & CU_NOPUNOFLIP) ) {
2612                                 vlr->flag |= R_NOPUNOFLIP;
2613                         }
2614
2615                         VecAddf(v1->n, v1->n, n1);
2616                         VecAddf(v2->n, v2->n, n1);
2617                         VecAddf(v3->n, v3->n, n1);
2618                         VecAddf(v4->n, v4->n, n1);
2619
2620                         p1++; p2++; p3++; p4++;
2621                 }
2622         }
2623         /* fix normals for U resp. V cyclic faces */
2624         sizeu--; sizev--;  /* dec size for face array */
2625         if (dl->flag & DL_CYCL_V) {
2626
2627                 for (v = 0; v < sizev; v++)
2628                 {
2629                         /* optimize! :*/
2630                         vlr= RE_findOrAddVlak(obr, UVTOINDEX(sizeu - 1, v));
2631                         vlr1= RE_findOrAddVlak(obr, UVTOINDEX(0, v));
2632                         VecAddf(vlr1->v1->n, vlr1->v1->n, vlr->n);
2633                         VecAddf(vlr1->v2->n, vlr1->v2->n, vlr->n);
2634                         VecAddf(vlr->v3->n, vlr->v3->n, vlr1->n);
2635                         VecAddf(vlr->v4->n, vlr->v4->n, vlr1->n);
2636                 }
2637         }
2638         if (dl->flag & DL_CYCL_U) {
2639
2640                 for (u = 0; u < sizeu; u++)
2641                 {
2642                         /* optimize! :*/
2643                         vlr= RE_findOrAddVlak(obr, UVTOINDEX(u, 0));
2644                         vlr1= RE_findOrAddVlak(obr, UVTOINDEX(u, sizev-1));
2645                         VecAddf(vlr1->v2->n, vlr1->v2->n, vlr->n);
2646                         VecAddf(vlr1->v3->n, vlr1->v3->n, vlr->n);
2647                         VecAddf(vlr->v1->n, vlr->v1->n, vlr1->n);
2648                         VecAddf(vlr->v4->n, vlr->v4->n, vlr1->n);
2649                 }
2650         }
2651         /* last vertex is an extra case:
2652
2653                 ^       ()----()----()----()
2654                 |       |     |     ||     |
2655                 u       |     |(0,n)||(0,0)|
2656                 |     |     ||     |
2657                 ()====()====[]====()
2658                 |     |     ||     |
2659                 |     |(m,n)||(m,0)|
2660                 |     |     ||     |
2661                 ()----()----()----()
2662                 v ->
2663
2664                 vertex [] is no longer shared, therefore distribute
2665                 normals of the surrounding faces to all of the duplicates of []
2666                 */
2667
2668         if ((dl->flag & DL_CYCL_V) && (dl->flag & DL_CYCL_U))
2669         {
2670                 vlr= RE_findOrAddVlak(obr, UVTOINDEX(sizeu - 1, sizev - 1)); /* (m,n) */
2671                 vlr1= RE_findOrAddVlak(obr, UVTOINDEX(0,0));  /* (0,0) */
2672                 VecAddf(n1, vlr->n, vlr1->n);
2673                 vlr2= RE_findOrAddVlak(obr, UVTOINDEX(0, sizev-1)); /* (0,n) */
2674                 VecAddf(n1, n1, vlr2->n);
2675                 vlr3= RE_findOrAddVlak(obr, UVTOINDEX(sizeu-1, 0)); /* (m,0) */
2676                 VecAddf(n1, n1, vlr3->n);
2677                 VECCOPY(vlr->v3->n, n1);
2678                 VECCOPY(vlr1->v1->n, n1);
2679                 VECCOPY(vlr2->v2->n, n1);
2680                 VECCOPY(vlr3->v4->n, n1);
2681         }
2682         for(a = startvert; a < obr->totvert; a++) {
2683                 ver= RE_findOrAddVert(obr, a);
2684                 Normalize(ver->n);
2685         }
2686
2687
2688         return orcoret;
2689 }
2690
2691 static void init_render_surf(Render *re, ObjectRen *obr)
2692 {
2693         Object *ob= obr->ob;
2694         Nurb *nu=0;
2695         Curve *cu;
2696         ListBase displist;
2697         DispList *dl;
2698         Material *matar[32];
2699         float *orco=NULL, *orcobase=NULL, mat[4][4];
2700         int a, need_orco=0;
2701
2702         cu= ob->data;
2703         nu= cu->nurb.first;
2704         if(nu==0) return;
2705
2706         MTC_Mat4MulMat4(mat, ob->obmat, re->viewmat);
2707         MTC_Mat4Invert(ob->imat, mat);
2708
2709         /* material array */
2710         memset(matar, 0, 4*32);
2711         matar[0]= give_render_material(re, ob, 0);
2712         for(a=0; a<ob->totcol; a++) {
2713                 matar[a]= give_render_material(re, ob, a+1);
2714                 if(matar[a] && matar[a]->texco & TEXCO_ORCO) {
2715                         need_orco= 1;
2716                 }
2717         }
2718
2719         if(ob->parent && (ob->parent->type==OB_LATTICE)) need_orco= 1;
2720
2721         if(need_orco) orcobase= orco= get_object_orco(re, ob);
2722
2723         displist.first= displist.last= 0;
2724         makeDispListSurf(ob, &displist, 1);
2725
2726         dl= displist.first;
2727         /* walk along displaylist and create rendervertices/-faces */
2728         while(dl) {
2729                         /* watch out: u ^= y, v ^= x !! */
2730                 if(dl->type==DL_SURF) {
2731                         orco+= 3*dl_surf_to_renderdata(obr, dl, matar, orco, mat);
2732                 }
2733
2734                 dl= dl->next;
2735         }
2736         freedisplist(&displist);
2737 }
2738
2739 static void init_render_curve(Render *re, ObjectRen *obr, int timeoffset)
2740 {
2741         Object *ob= obr->ob;
2742         Curve *cu;
2743         VertRen *ver;
2744         VlakRen *vlr;
2745         DispList *dl;
2746         ListBase olddl={NULL, NULL};
2747         Material *matar[32];
2748         float len, *data, *fp, *orco=NULL, *orcobase= NULL;
2749         float n[3], mat[4][4];
2750         int nr, startvert, startvlak, a, b;
2751         int frontside, need_orco=0;
2752
2753         cu= ob->data;
2754         if(ob->type==OB_FONT && cu->str==NULL) return;
2755         else if(ob->type==OB_CURVE && cu->nurb.first==NULL) return;
2756
2757         /* no modifier call here, is in makedisp */
2758
2759         if(cu->resolu_ren)
2760                 SWAP(ListBase, olddl, cu->disp);
2761
2762         /* test displist */
2763         if(cu->disp.first==NULL)
2764                 makeDispListCurveTypes(ob, 0);
2765         dl= cu->disp.first;
2766         if(cu->disp.first==NULL) return;
2767
2768         MTC_Mat4MulMat4(mat, ob->obmat, re->viewmat);
2769         MTC_Mat4Invert(ob->imat, mat);
2770
2771         /* material array */
2772         memset(matar, 0, 4*32);
2773         matar[0]= give_render_material(re, ob, 0);
2774         for(a=0; a<ob->totcol; a++) {
2775                 matar[a]= give_render_material(re, ob, a+1);
2776                 if(matar[a]->texco & TEXCO_ORCO) {
2777                         need_orco= 1;
2778                 }
2779         }
2780
2781         if(need_orco) orcobase=orco= get_object_orco(re, ob);
2782
2783         dl= cu->disp.first;
2784         while(dl) {
2785                 if(dl->type==DL_INDEX3) {
2786                         int *index;
2787
2788                         startvert= obr->totvert;
2789                         data= dl->verts;
2790
2791                         n[0]= ob->imat[0][2];
2792                         n[1]= ob->imat[1][2];
2793                         n[2]= ob->imat[2][2];
2794                         Normalize(n);
2795
2796                         for(a=0; a<dl->nr; a++, data+=3) {
2797                                 ver= RE_findOrAddVert(obr, obr->totvert++);
2798                                 VECCOPY(ver->co, data);
2799
2800                                 /* flip normal if face is backfacing, also used in face loop below */
2801                                 if(ver->co[2] < 0.0) {
2802                                         VECCOPY(ver->n, n);
2803                                         ver->flag = 1;
2804                                 }
2805                                 else {
2806                                         ver->n[0]= -n[0]; ver->n[1]= -n[1]; ver->n[2]= -n[2];
2807                                         ver->flag = 0;
2808                                 }
2809
2810                                 MTC_Mat4MulVecfl(mat, ver->co);
2811
2812                                 if (orco) {
2813                                         ver->orco = orco;
2814                                         orco += 3;
2815                                 }
2816                         }
2817
2818                         if(timeoffset==0) {
2819                                 startvlak= obr->totvlak;
2820                                 index= dl->index;
2821                                 for(a=0; a<dl->parts; a++, index+=3) {
2822
2823                                         vlr= RE_findOrAddVlak(obr, obr->totvlak++);
2824                                         vlr->v1= RE_findOrAddVert(obr, startvert+index[0]);
2825                                         vlr->v2= RE_findOrAddVert(obr, startvert+index[1]);
2