source/blender/blenkernel/intern/object.c

   1 /* object.c
   2  *
   3  *
   4  * $Id$
   5  *
   6  * ***** BEGIN GPL LICENSE BLOCK *****
   7  *
   8  * This program is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU General Public License
  10  * as published by the Free Software Foundation; either version 2
  11  * of the License, or (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software Foundation,
  20  * Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  21  *
  22  * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
  23  * All rights reserved.
  24  *
  25  * The Original Code is: all of this file.
  26  *
  27  * Contributor(s): none yet.
  28  *
  29  * ***** END GPL LICENSE BLOCK *****
  30  */
  31
  32 #include <string.h>
  33 #include <math.h>
  34 #include <stdio.h>
  35
  36 #ifdef HAVE_CONFIG_H
  37 #include <config.h>
  38 #endif
  39
  40 #include "MEM_guardedalloc.h"
  41
  42 #include "DNA_action_types.h"
  43 #include "DNA_armature_types.h"
  44 #include "DNA_camera_types.h"
  45 #include "DNA_constraint_types.h"
  46 #include "DNA_curve_types.h"
  47 #include "DNA_group_types.h"
  48 #include "DNA_ipo_types.h"
  49 #include "DNA_lamp_types.h"
  50 #include "DNA_lattice_types.h"
  51 #include "DNA_material_types.h"
  52 #include "DNA_mesh_types.h"
  53 #include "DNA_meta_types.h"
  54 #include "DNA_curve_types.h"
  55 #include "DNA_meshdata_types.h"
  56 #include "DNA_modifier_types.h"
  57 #include "DNA_nla_types.h"
  58 #include "DNA_object_types.h"
  59 #include "DNA_object_force.h"
  60 #include "DNA_object_fluidsim.h"
  61 #include "DNA_oops_types.h"
  62 #include "DNA_particle_types.h"
  63 #include "DNA_scene_types.h"
  64 #include "DNA_screen_types.h"
  65 #include "DNA_space_types.h"
  66 #include "DNA_texture_types.h"
  67 #include "DNA_userdef_types.h"
  68 #include "DNA_view3d_types.h"
  69 #include "DNA_world_types.h"
  70
  71 #include "BKE_armature.h"
  72 #include "BKE_action.h"
  73 #include "BKE_bullet.h"
  74 #include "BKE_colortools.h"
  75 #include "BKE_deform.h"
  76 #include "BKE_DerivedMesh.h"
  77 #include "BKE_nla.h"
  78
  79 #include "BLI_blenlib.h"
  80 #include "BLI_arithb.h"
  81 #include "BLI_editVert.h"
  82
  83 #include "BKE_utildefines.h"
  84 #include "BKE_bad_level_calls.h"
  85
  86 #include "BKE_main.h"
  87 #include "BKE_global.h"
  88
  89 #include "BKE_anim.h"
  90 #include "BKE_blender.h"
  91 #include "BKE_constraint.h"
  92 #include "BKE_curve.h"
  93 #include "BKE_displist.h"
  94 #include "BKE_group.h"
  95 #include "BKE_icons.h"
  96 #include "BKE_ipo.h"
  97 #include "BKE_key.h"
  98 #include "BKE_lattice.h"
  99 #include "BKE_library.h"
 100 #include "BKE_mesh.h"
 101 #include "BKE_mball.h"
 102 #include "BKE_modifier.h"
 103 #include "BKE_object.h"
 104 #include "BKE_particle.h"
 105 #include "BKE_pointcache.h"
 106 #include "BKE_property.h"
 107 #include "BKE_sca.h"
 108 #include "BKE_scene.h"
 109 #include "BKE_screen.h"
 110 #include "BKE_softbody.h"
 111
 112 #include "LBM_fluidsim.h"
 113
 114 #ifndef DISABLE_PYTHON
 115 #include "BPY_extern.h"
 116 #endif
 117
 118 #include "GPU_material.h"
 119
 120 #include "blendef.h"
 121
 122 /* Local function protos */
 123 static void solve_parenting (Object *ob, Object *par, float obmat[][4], float slowmat[][4], int simul);
 124
 125 float originmat[3][3];  /* after where_is_object(), can be used in other functions (bad!) */
 126 Object workob;
 127
 128 void clear_workob(void)
 129 {
 130         memset(&workob, 0, sizeof(Object));
 131
 132         workob.size[0]= workob.size[1]= workob.size[2]= 1.0;
 133
 134 }
 135
 136 void copy_baseflags()
 137 {
 138         Base *base= G.scene->base.first;
 139
 140         while(base) {
 141                 base->object->flag= base->flag;
 142                 base= base->next;
 143         }
 144 }
 145
 146 void copy_objectflags()
 147 {
 148         Base *base= G.scene->base.first;
 149
 150         while(base) {
 151                 base->flag= base->object->flag;
 152                 base= base->next;
 153         }
 154 }
 155
 156 void update_base_layer(Object *ob)
 157 {
 158         Base *base= G.scene->base.first;
 159
 160         while (base) {
 161                 if (base->object == ob) base->lay= ob->lay;
 162                 base= base->next;
 163         }
 164 }
 165
 166 void object_free_particlesystems(Object *ob)
 167 {
 168         while(ob->particlesystem.first){
 169                 ParticleSystem *psys = ob->particlesystem.first;
 170
 171                 BLI_remlink(&ob->particlesystem,psys);
 172
 173                 psys_free(ob,psys);
 174         }
 175 }
 176
 177 void object_free_softbody(Object *ob)
 178 {
 179         if(ob->soft) {
 180                 sbFree(ob->soft);
 181                 ob->soft= NULL;
 182         }
 183 }
 184
 185 void object_free_bulletsoftbody(Object *ob)
 186 {
 187         if(ob->bsoft) {
 188                 bsbFree(ob->bsoft);
 189                 ob->bsoft= NULL;
 190         }
 191 }
 192
 193 void object_free_modifiers(Object *ob)
 194 {
 195         while (ob->modifiers.first) {
 196                 ModifierData *md = ob->modifiers.first;
 197
 198                 BLI_remlink(&ob->modifiers, md);
 199
 200                 modifier_free(md);
 201         }
 202
 203         /* particle modifiers were freed, so free the particlesystems as well */
 204         object_free_particlesystems(ob);
 205
 206         /* same for softbody */
 207         object_free_softbody(ob);
 208 }
 209
 210 /* here we will collect all local displist stuff */
 211 /* also (ab)used in depsgraph */
 212 void object_free_display(Object *ob)
 213 {
 214         if(ob->derivedDeform) {
 215                 ob->derivedDeform->needsFree = 1;
 216                 ob->derivedDeform->release(ob->derivedDeform);
 217                 ob->derivedDeform= NULL;
 218         }
 219         if(ob->derivedFinal) {
 220                 ob->derivedFinal->needsFree = 1;
 221                 ob->derivedFinal->release(ob->derivedFinal);
 222                 ob->derivedFinal= NULL;
 223         }
 224
 225         freedisplist(&ob->disp);
 226 }
 227
 228 /* do not free object itself */
 229 void free_object(Object *ob)
 230 {
 231         int a;
 232
 233         object_free_display(ob);
 234
 235         /* disconnect specific data */
 236         if(ob->data) {
 237                 ID *id= ob->data;
 238                 id->us--;
 239                 if(id->us==0) {
 240                         if(ob->type==OB_MESH) unlink_mesh(ob->data);
 241                         else if(ob->type==OB_CURVE) unlink_curve(ob->data);
 242                         else if(ob->type==OB_MBALL) unlink_mball(ob->data);
 243                 }
 244                 ob->data= 0;
 245         }
 246
 247         for(a=0; a<ob->totcol; a++) {
 248                 if(ob->mat[a]) ob->mat[a]->id.us--;
 249         }
 250         if(ob->mat) MEM_freeN(ob->mat);
 251         ob->mat= 0;
 252         if(ob->bb) MEM_freeN(ob->bb);
 253         ob->bb= 0;
 254         if(ob->path) free_path(ob->path);
 255         ob->path= 0;
 256         if(ob->ipo) ob->ipo->id.us--;
 257         if(ob->action) ob->action->id.us--;
 258         if(ob->poselib) ob->poselib->id.us--;
 259         if(ob->dup_group) ob->dup_group->id.us--;
 260         if(ob->defbase.first)
 261                 BLI_freelistN(&ob->defbase);
 262         if(ob->pose)
 263                 free_pose(ob->pose);
 264         free_properties(&ob->prop);
 265         object_free_modifiers(ob);
 266
 267         free_sensors(&ob->sensors);
 268         free_controllers(&ob->controllers);
 269         free_actuators(&ob->actuators);
 270
 271         free_constraints(&ob->constraints);
 272         free_constraint_channels(&ob->constraintChannels);
 273         free_nlastrips(&ob->nlastrips);
 274
 275 #ifndef DISABLE_PYTHON
 276         BPY_free_scriptlink(&ob->scriptlink);
 277 #endif
 278
 279         if(ob->pd){
 280                 if(ob->pd->tex)
 281                         ob->pd->tex->id.us--;
 282                 MEM_freeN(ob->pd);
 283         }
 284         if(ob->soft) sbFree(ob->soft);
 285         if(ob->bsoft) bsbFree(ob->bsoft);
 286         if(ob->gpulamp.first) GPU_lamp_free(ob);
 287 }
 288
 289 static void unlink_object__unlinkModifierLinks(void *userData, Object *ob, Object **obpoin)
 290 {
 291         Object *unlinkOb = userData;
 292
 293         if (*obpoin==unlinkOb) {
 294                 *obpoin = NULL;
 295                 ob->recalc |= OB_RECALC;
 296         }
 297 }
 298 void unlink_object(Object *ob)
 299 {
 300         Object *obt;
 301         Material *mat;
 302         World *wrld;
 303         bScreen *sc;
 304         Scene *sce;
 305         Curve *cu;
 306         Tex *tex;
 307         Ipo *ipo;
 308         Group *group;
 309         Camera *camera;
 310         bConstraint *con;
 311         bActionStrip *strip;
 312         ModifierData *md;
 313         int a;
 314
 315         unlink_controllers(&ob->controllers);
 316         unlink_actuators(&ob->actuators);
 317
 318         /* check all objects: parents en bevels and fields, also from libraries */
 319         obt= G.main->object.first;
 320         while(obt) {
 321                 if(obt->proxy==ob)
 322                         obt->proxy= NULL;
 323                 if(obt->proxy_from==ob) {
 324                         obt->proxy_from= NULL;
 325                         obt->recalc |= OB_RECALC_OB;
 326                 }
 327                 if(obt->proxy_group==ob)
 328                         obt->proxy_group= NULL;
 329
 330                 if(obt->parent==ob) {
 331                         obt->parent= NULL;
 332                         obt->recalc |= OB_RECALC;
 333                 }
 334
 335                 if(obt->track==ob) {
 336                         obt->track= NULL;
 337                         obt->recalc |= OB_RECALC_OB;
 338                 }
 339
 340                 modifiers_foreachObjectLink(obt, unlink_object__unlinkModifierLinks, ob);
 341
 342                 if ELEM(obt->type, OB_CURVE, OB_FONT) {
 343                         cu= obt->data;
 344
 345                         if(cu->bevobj==ob) {
 346                                 cu->bevobj= NULL;
 347                                 obt->recalc |= OB_RECALC;
 348                         }
 349                         if(cu->taperobj==ob) {
 350                                 cu->taperobj= NULL;
 351                                 obt->recalc |= OB_RECALC;
 352                         }
 353                         if(cu->textoncurve==ob) {
 354                                 cu->textoncurve= NULL;
 355                                 obt->recalc |= OB_RECALC;
 356                         }
 357                 }
 358                 else if(obt->type==OB_ARMATURE && obt->pose) {
 359                         bPoseChannel *pchan;
 360                         for(pchan= obt->pose->chanbase.first; pchan; pchan= pchan->next) {
 361                                 for (con = pchan->constraints.first; con; con=con->next) {
 362                                         bConstraintTypeInfo *cti= constraint_get_typeinfo(con);
 363                                         ListBase targets = {NULL, NULL};
 364                                         bConstraintTarget *ct;
 365
 366                                         if (cti && cti->get_constraint_targets) {
 367                                                 cti->get_constraint_targets(con, &targets);
 368
 369                                                 for (ct= targets.first; ct; ct= ct->next) {
 370                                                         if (ct->tar == ob) {
 371                                                                 ct->tar = NULL;
 372                                                                 strcpy(ct->subtarget, "");
 373                                                                 obt->recalc |= OB_RECALC_DATA;
 374                                                         }
 375                                                 }
 376
 377                                                 if (cti->flush_constraint_targets)
 378                                                         cti->flush_constraint_targets(con, &targets, 0);
 379                                         }
 380                                 }
 381                                 if(pchan->custom==ob)
 382                                         pchan->custom= NULL;
 383                         }
 384                 }
 385
 386                 sca_remove_ob_poin(obt, ob);
 387
 388                 for (con = obt->constraints.first; con; con=con->next) {
 389                         bConstraintTypeInfo *cti= constraint_get_typeinfo(con);
 390                         ListBase targets = {NULL, NULL};
 391                         bConstraintTarget *ct;
 392
 393                         if (cti && cti->get_constraint_targets) {
 394                                 cti->get_constraint_targets(con, &targets);
 395
 396                                 for (ct= targets.first; ct; ct= ct->next) {
 397                                         if (ct->tar == ob) {
 398                                                 ct->tar = NULL;
 399                                                 strcpy(ct->subtarget, "");
 400                                                 obt->recalc |= OB_RECALC_DATA;
 401                                         }
 402                                 }
 403
 404                                 if (cti->flush_constraint_targets)
 405                                         cti->flush_constraint_targets(con, &targets, 0);
 406                         }
 407                 }
 408
 409                 /* object is deflector or field */
 410                 if(ob->pd) {
 411                         if(obt->soft)
 412                                 obt->recalc |= OB_RECALC_DATA;
 413
 414                         /* cloth */
 415                         for(md=obt->modifiers.first; md; md=md->next)
 416                                 if(md->type == eModifierType_Cloth)
 417                                         obt->recalc |= OB_RECALC_DATA;
 418                 }
 419
 420                 /* strips */
 421                 for(strip= obt->nlastrips.first; strip; strip= strip->next) {
 422                         if(strip->object==ob)
 423                                 strip->object= NULL;
 424
 425                         if(strip->modifiers.first) {
 426                                 bActionModifier *amod;
 427                                 for(amod= strip->modifiers.first; amod; amod= amod->next)
 428                                         if(amod->ob==ob)
 429                                                 amod->ob= NULL;
 430                         }
 431                 }
 432
 433                 /* particle systems */
 434                 if(obt->particlesystem.first) {
 435                         ParticleSystem *tpsys= obt->particlesystem.first;
 436                         for(; tpsys; tpsys=tpsys->next) {
 437                                 if(tpsys->keyed_ob==ob) {
 438                                         ParticleSystem *psys= BLI_findlink(&ob->particlesystem,tpsys->keyed_psys-1);
 439
 440                                         if(psys && psys->keyed_ob) {
 441                                                 tpsys->keyed_ob= psys->keyed_ob;
 442                                                 tpsys->keyed_psys= psys->keyed_psys;
 443                                         }
 444                                         else
 445                                                 tpsys->keyed_ob= NULL;
 446
 447                                         obt->recalc |= OB_RECALC_DATA;
 448                                 }
 449
 450                                 if(tpsys->target_ob==ob) {
 451                                         tpsys->target_ob= NULL;
 452                                         obt->recalc |= OB_RECALC_DATA;
 453                                 }
 454
 455                                 if(tpsys->part->dup_ob==ob)
 456                                         tpsys->part->dup_ob= NULL;
 457
 458                                 if(tpsys->part->flag&PART_STICKY) {
 459                                         ParticleData *pa;
 460                                         int p;
 461
 462                                         for(p=0,pa=tpsys->particles; p<tpsys->totpart; p++,pa++) {
 463                                                 if(pa->stick_ob==ob) {
 464                                                         pa->stick_ob= 0;
 465                                                         pa->flag &= ~PARS_STICKY;
 466                                                 }
 467                                         }
 468                                 }
 469                         }
 470                         if(ob->pd)
 471                                 obt->recalc |= OB_RECALC_DATA;
 472                 }
 473
 474                 obt= obt->id.next;
 475         }
 476
 477         /* materials */
 478         mat= G.main->mat.first;
 479         while(mat) {
 480
 481                 for(a=0; a<MAX_MTEX; a++) {
 482                         if(mat->mtex[a] && ob==mat->mtex[a]->object) {
 483                                 /* actually, test for lib here... to do */
 484                                 mat->mtex[a]->object= NULL;
 485                         }
 486                 }
 487
 488                 mat= mat->id.next;
 489         }
 490
 491         /* textures */
 492         tex= G.main->tex.first;
 493         while(tex) {
 494                 if(tex->env) {
 495                         if(tex->env->object == ob) tex->env->object= NULL;
 496                 }
 497                 tex= tex->id.next;
 498         }
 499
 500         /* mballs */
 501         if(ob->type==OB_MBALL) {
 502                 obt= find_basis_mball(ob);
 503                 if(obt) freedisplist(&obt->disp);
 504         }
 505
 506         /* worlds */
 507         wrld= G.main->world.first;
 508         while(wrld) {
 509                 if(wrld->id.lib==NULL) {
 510                         for(a=0; a<MAX_MTEX; a++) {
 511                                 if(wrld->mtex[a] && ob==wrld->mtex[a]->object)
 512                                         wrld->mtex[a]->object= NULL;
 513                         }
 514                 }
 515
 516                 wrld= wrld->id.next;
 517         }
 518
 519         /* scenes */
 520         sce= G.main->scene.first;
 521         while(sce) {
 522                 if(sce->id.lib==NULL) {
 523                         if(sce->camera==ob) sce->camera= NULL;
 524                 }
 525                 sce= sce->id.next;
 526         }
 527         /* ipos */
 528         ipo= G.main->ipo.first;
 529         while(ipo) {
 530                 if(ipo->id.lib==NULL) {
 531                         IpoCurve *icu;
 532                         for(icu= ipo->curve.first; icu; icu= icu->next) {
 533                                 if(icu->driver && icu->driver->ob==ob)
 534                                         icu->driver->ob= NULL;
 535                         }
 536                 }
 537                 ipo= ipo->id.next;
 538         }
 539
 540         /* screens */
 541         sc= G.main->screen.first;
 542         while(sc) {
 543                 ScrArea *sa= sc->areabase.first;
 544                 while(sa) {
 545                         SpaceLink *sl;
 546
 547                         for (sl= sa->spacedata.first; sl; sl= sl->next) {
 548                                 if(sl->spacetype==SPACE_VIEW3D) {
 549                                         View3D *v3d= (View3D*) sl;
 550
 551                                         if(v3d->camera==ob) {
 552                                                 v3d->camera= NULL;
 553                                                 if(v3d->persp==V3D_CAMOB) v3d->persp= V3D_PERSP;
 554                                         }
 555                                         if(v3d->localvd && v3d->localvd->camera==ob ) {
 556                                                 v3d->localvd->camera= NULL;
 557                                                 if(v3d->localvd->persp==V3D_CAMOB) v3d->localvd->persp= V3D_PERSP;
 558                                         }
 559                                 }
 560                                 else if(sl->spacetype==SPACE_IPO) {
 561                                         SpaceIpo *sipo= (SpaceIpo *)sl;
 562                                         if(sipo->from == (ID *)ob) sipo->from= NULL;
 563                                 }
 564                                 else if(sl->spacetype==SPACE_OOPS) {
 565                                         SpaceOops *so= (SpaceOops *)sl;
 566                                         Oops *oops;
 567
 568                                         oops= so->oops.first;
 569                                         while(oops) {
 570                                                 if(oops->id==(ID *)ob) oops->id= NULL;
 571                                                 oops= oops->next;
 572                                         }
 573                                         if(so->treestore) {
 574                                                 TreeStoreElem *tselem= so->treestore->data;
 575                                                 int a;
 576                                                 for(a=0; a<so->treestore->usedelem; a++, tselem++) {
 577                                                         if(tselem->id==(ID *)ob) tselem->id= NULL;
 578                                                 }
 579                                         }
 580                                         so->lockpoin= NULL;
 581                                 }
 582                         }
 583
 584                         sa= sa->next;
 585                 }
 586                 sc= sc->id.next;
 587         }
 588
 589         /* groups */
 590         group= G.main->group.first;
 591         while(group) {
 592                 rem_from_group(group, ob);
 593                 group= group->id.next;
 594         }
 595
 596         /* cameras */
 597         camera= G.main->camera.first;
 598         while(camera) {
 599                 if (camera->dof_ob==ob) {
 600                         camera->dof_ob = NULL;
 601                 }
 602                 camera= camera->id.next;
 603         }
 604 }
 605
 606 int exist_object(Object *obtest)
 607 {
 608         Object *ob;
 609
 610         if(obtest==NULL) return 0;
 611
 612         ob= G.main->object.first;
 613         while(ob) {
 614                 if(ob==obtest) return 1;
 615                 ob= ob->id.next;
 616         }
 617         return 0;
 618 }
 619
 620 void *add_camera(char *name)
 621 {
 622         Camera *cam;
 623
 624         cam=  alloc_libblock(&G.main->camera, ID_CA, name);
 625
 626         cam->lens= 35.0f;
 627         cam->angle= 49.14f;
 628         cam->clipsta= 0.1f;
 629         cam->clipend= 100.0f;
 630         cam->drawsize= 0.5f;
 631         cam->ortho_scale= 6.0;
 632         cam->flag |= CAM_SHOWTITLESAFE;
 633         cam->passepartalpha = 0.2f;
 634
 635         return cam;
 636 }
 637
 638 Camera *copy_camera(Camera *cam)
 639 {
 640         Camera *camn;
 641
 642         camn= copy_libblock(cam);
 643         id_us_plus((ID *)camn->ipo);
 644 #ifndef DISABLE_PYTHON
 645         BPY_copy_scriptlink(&camn->scriptlink);
 646 #endif
 647         return camn;
 648 }
 649
 650
 651
 652 void make_local_camera(Camera *cam)
 653 {
 654         Object *ob;
 655         Camera *camn;
 656         int local=0, lib=0;
 657
 658         /* - only lib users: do nothing
 659             * - only local users: set flag
 660             * - mixed: make copy
 661             */
 662
 663         if(cam->id.lib==0) return;
 664         if(cam->id.us==1) {
 665                 cam->id.lib= 0;
 666                 cam->id.flag= LIB_LOCAL;
 667                 new_id(0, (ID *)cam, 0);
 668                 return;
 669         }
 670
 671         ob= G.main->object.first;
 672         while(ob) {
 673                 if(ob->data==cam) {
 674                         if(ob->id.lib) lib= 1;
 675                         else local= 1;
 676                 }
 677                 ob= ob->id.next;
 678         }
 679
 680         if(local && lib==0) {
 681                 cam->id.lib= 0;
 682                 cam->id.flag= LIB_LOCAL;
 683                 new_id(0, (ID *)cam, 0);
 684         }
 685         else if(local && lib) {
 686                 camn= copy_camera(cam);
 687                 camn->id.us= 0;
 688
 689                 ob= G.main->object.first;
 690                 while(ob) {
 691                         if(ob->data==cam) {
 692
 693                                 if(ob->id.lib==0) {
 694                                         ob->data= camn;
 695                                         camn->id.us++;
 696                                         cam->id.us--;
 697                                 }
 698                         }
 699                         ob= ob->id.next;
 700                 }
 701         }
 702 }
 703
 704 /* get the camera's dof value, takes the dof object into account */
 705 float dof_camera(Object *ob)
 706 {
 707         Camera *cam = (Camera *)ob->data;
 708         if (ob->type != OB_CAMERA)
 709                 return 0.0;
 710         if (cam->dof_ob) {
 711                 /* too simple, better to return the distance on the view axis only
 712                  * return VecLenf(ob->obmat[3], cam->dof_ob->obmat[3]); */
 713                 float mat[4][4], obmat[4][4];
 714
 715                 Mat4CpyMat4(obmat, ob->obmat);
 716                 Mat4Ortho(obmat);
 717                 Mat4Invert(ob->imat, obmat);
 718                 Mat4MulMat4(mat, cam->dof_ob->obmat, ob->imat);
 719                 return fabs(mat[3][2]);
 720         }
 721         return cam->YF_dofdist;
 722 }
 723
 724 void *add_lamp(char *name)
 725 {
 726         Lamp *la;
 727
 728         la=  alloc_libblock(&G.main->lamp, ID_LA, name);
 729
 730         la->r= la->g= la->b= la->k= 1.0;
 731         la->haint= la->energy= 1.0;
 732         la->dist= 20.0;
 733         la->spotsize= 45.0;
 734         la->spotblend= 0.15;
 735         la->att2= 1.0;
 736         la->mode= LA_SHAD_BUF;
 737         la->bufsize= 512;
 738         la->clipsta= 0.5;
 739         la->clipend= 40.0;
 740         la->shadspotsize= 45.0;
 741         la->samp= 3;
 742         la->bias= 1.0;
 743         la->soft= 3.0;
 744         la->ray_samp= la->ray_sampy= la->ray_sampz= 1;
 745         la->area_size=la->area_sizey=la->area_sizez= 1.0;
 746         la->buffers= 1;
 747         la->buftype= LA_SHADBUF_HALFWAY;
 748         la->ray_samp_method = LA_SAMP_HALTON;
 749         la->adapt_thresh = 0.001;
 750         la->preview=NULL;
 751         la->falloff_type = LA_FALLOFF_INVLINEAR;
 752         la->curfalloff = curvemapping_add(1, 0.0f, 1.0f, 1.0f, 0.0f);
 753         la->sun_effect_type = 0;
 754         la->horizon_brightness = 1.0;
 755         la->spread = 1.0;
 756         la->sun_brightness = 1.0;
 757         la->sun_size = 1.0;
 758         la->backscattered_light = 1.0;
 759         la->atm_turbidity = 2.0;
 760         la->atm_inscattering_factor = 1.0;
 761         la->atm_extinction_factor = 1.0;
 762         la->atm_distance_factor = 1.0;
 763         la->sun_intensity = 1.0;
 764         la->skyblendtype= MA_RAMP_ADD;
 765         la->skyblendfac= 1.0f;
 766         la->sky_colorspace= BLI_CS_CIE;
 767         la->sky_exposure= 1.0f;
 768
 769         curvemapping_initialize(la->curfalloff);
 770         return la;
 771 }
 772
 773 Lamp *copy_lamp(Lamp *la)
 774 {
 775         Lamp *lan;
 776         int a;
 777
 778         lan= copy_libblock(la);
 779
 780         for(a=0; a<MAX_MTEX; a++) {
 781                 if(lan->mtex[a]) {
 782                         lan->mtex[a]= MEM_mallocN(sizeof(MTex), "copylamptex");
 783                         memcpy(lan->mtex[a], la->mtex[a], sizeof(MTex));
 784                         id_us_plus((ID *)lan->mtex[a]->tex);
 785                 }
 786         }
 787
 788         lan->curfalloff = curvemapping_copy(la->curfalloff);
 789
 790         id_us_plus((ID *)lan->ipo);
 791
 792         if (la->preview) lan->preview = BKE_previewimg_copy(la->preview);
 793 #ifndef DISABLE_PYTHON
 794         BPY_copy_scriptlink(&la->scriptlink);
 795 #endif
 796         return lan;
 797 }
 798
 799 void make_local_lamp(Lamp *la)
 800 {
 801         Object *ob;
 802         Lamp *lan;
 803         int local=0, lib=0;
 804
 805         /* - only lib users: do nothing
 806             * - only local users: set flag
 807             * - mixed: make copy
 808             */
 809
 810         if(la->id.lib==0) return;
 811         if(la->id.us==1) {
 812                 la->id.lib= 0;
 813                 la->id.flag= LIB_LOCAL;
 814                 new_id(0, (ID *)la, 0);
 815                 return;
 816         }
 817
 818         ob= G.main->object.first;
 819         while(ob) {
 820                 if(ob->data==la) {
 821                         if(ob->id.lib) lib= 1;
 822                         else local= 1;
 823                 }
 824                 ob= ob->id.next;
 825         }
 826
 827         if(local && lib==0) {
 828                 la->id.lib= 0;
 829                 la->id.flag= LIB_LOCAL;
 830                 new_id(0, (ID *)la, 0);
 831         }
 832         else if(local && lib) {
 833                 lan= copy_lamp(la);
 834                 lan->id.us= 0;
 835
 836                 ob= G.main->object.first;
 837                 while(ob) {
 838                         if(ob->data==la) {
 839
 840                                 if(ob->id.lib==0) {
 841                                         ob->data= lan;
 842                                         lan->id.us++;
 843                                         la->id.us--;
 844                                 }
 845                         }
 846                         ob= ob->id.next;
 847                 }
 848         }
 849 }
 850
 851 void free_camera(Camera *ca)
 852 {
 853 #ifndef DISABLE_PYTHON
 854         BPY_free_scriptlink(&ca->scriptlink);
 855 #endif
 856 }
 857
 858 void free_lamp(Lamp *la)
 859 {
 860         MTex *mtex;
 861         int a;
 862
 863         /* scriptlinks */
 864 #ifndef DISABLE_PYTHON
 865         BPY_free_scriptlink(&la->scriptlink);
 866 #endif
 867
 868         for(a=0; a<MAX_MTEX; a++) {
 869                 mtex= la->mtex[a];
 870                 if(mtex && mtex->tex) mtex->tex->id.us--;
 871                 if(mtex) MEM_freeN(mtex);
 872         }
 873         la->ipo= 0;
 874
 875         curvemapping_free(la->curfalloff);
 876
 877         BKE_previewimg_free(&la->preview);
 878         BKE_icon_delete(&la->id);
 879         la->id.icon_id = 0;
 880 }
 881
 882 void *add_wave()
 883 {
 884         return 0;
 885 }
 886
 887
 888 /* *************************************************** */
 889
 890 static void *add_obdata_from_type(int type)
 891 {
 892         switch (type) {
 893         case OB_MESH: G.totmesh++; return add_mesh("Mesh");
 894         case OB_CURVE: G.totcurve++; return add_curve("Curve", OB_CURVE);
 895         case OB_SURF: G.totcurve++; return add_curve("Surf", OB_SURF);
 896         case OB_FONT: return add_curve("Text", OB_FONT);
 897         case OB_MBALL: return add_mball("Meta");
 898         case OB_CAMERA: return add_camera("Camera");
 899         case OB_LAMP: G.totlamp++; return add_lamp("Lamp");
 900         case OB_LATTICE: return add_lattice("Lattice");
 901         case OB_WAVE: return add_wave();
 902         case OB_ARMATURE: return add_armature("Armature");
 903         case OB_EMPTY: return NULL;
 904         default:
 905                 printf("add_obdata_from_type: Internal error, bad type: %d\n", type);
 906                 return NULL;
 907         }
 908 }
 909
 910 static char *get_obdata_defname(int type)
 911 {
 912         switch (type) {
 913         case OB_MESH: return "Mesh";
 914         case OB_CURVE: return "Curve";
 915         case OB_SURF: return "Surf";
 916         case OB_FONT: return "Font";
 917         case OB_MBALL: return "Mball";
 918         case OB_CAMERA: return "Camera";
 919         case OB_LAMP: return "Lamp";
 920         case OB_LATTICE: return "Lattice";
 921         case OB_WAVE: return "Wave";
 922         case OB_ARMATURE: return "Armature";
 923         case OB_EMPTY: return "Empty";
 924         default:
 925                 printf("get_obdata_defname: Internal error, bad type: %d\n", type);
 926                 return "Empty";
 927         }
 928 }
 929
 930 /* more general add: creates minimum required data, but without vertices etc. */
 931 Object *add_only_object(int type, char *name)
 932 {
 933         Object *ob;
 934
 935         ob= alloc_libblock(&G.main->object, ID_OB, name);
 936         G.totobj++;
 937
 938         /* default object vars */
 939         ob->type= type;
 940         /* ob->transflag= OB_QUAT; */
 941
 942 #if 0 /* not used yet */
 943         QuatOne(ob->quat);
 944         QuatOne(ob->dquat);
 945 #endif
 946
 947         ob->col[0]= ob->col[1]= ob->col[2]= 1.0;
 948         ob->col[3]= 1.0;
 949
 950         ob->loc[0]= ob->loc[1]= ob->loc[2]= 0.0;
 951         ob->rot[0]= ob->rot[1]= ob->rot[2]= 0.0;
 952         ob->size[0]= ob->size[1]= ob->size[2]= 1.0;
 953
 954         Mat4One(ob->constinv);
 955         Mat4One(ob->parentinv);
 956         Mat4One(ob->obmat);
 957         ob->dt= OB_SHADED;
 958         if(U.flag & USER_MAT_ON_OB) ob->colbits= -1;
 959         ob->empty_drawtype= OB_ARROWS;
 960         ob->empty_drawsize= 1.0;
 961
 962         if(type==OB_CAMERA || type==OB_LAMP) {
 963                 ob->trackflag= OB_NEGZ;
 964                 ob->upflag= OB_POSY;
 965         }
 966         else {
 967                 ob->trackflag= OB_POSY;
 968                 ob->upflag= OB_POSZ;
 969         }
 970         ob->ipoflag = OB_OFFS_OB+OB_OFFS_PARENT;
 971         ob->ipowin= ID_OB;      /* the ipowin shown */
 972         ob->dupon= 1; ob->dupoff= 0;
 973         ob->dupsta= 1; ob->dupend= 100;
 974         ob->dupfacesca = 1.0;
 975
 976         /* Game engine defaults*/
 977         ob->mass= ob->inertia= 1.0f;
 978         ob->formfactor= 0.4f;
 979         ob->damping= 0.04f;
 980         ob->rdamping= 0.1f;
 981         ob->anisotropicFriction[0] = 1.0f;
 982         ob->anisotropicFriction[1] = 1.0f;
 983         ob->anisotropicFriction[2] = 1.0f;
 984         ob->gameflag= OB_PROP|OB_COLLISION;
 985         ob->margin = 0.0;
 986
 987         /* NT fluid sim defaults */
 988         ob->fluidsimFlag = 0;
 989         ob->fluidsimSettings = NULL;
 990
 991         return ob;
 992 }
 993
 994 /* general add: to G.scene, with layer from area and default name */
 995 /* creates minimum required data, but without vertices etc. */
 996 Object *add_object(int type)
 997 {
 998         Object *ob;
 999         Base *base;
1000         char name[32];
1001
1002         strcpy(name, get_obdata_defname(type));
1003         ob = add_only_object(type, name);
1004
1005         ob->data= add_obdata_from_type(type);
1006
1007         ob->lay= G.scene->lay;
1008
1009         base= scene_add_base(G.scene, ob);
1010         scene_select_base(G.scene, base);
1011         ob->recalc |= OB_RECALC;
1012
1013         return ob;
1014 }
1015
1016 void base_init_from_view3d(Base *base, View3D *v3d)
1017 {
1018         Object *ob= base->object;
1019
1020         if (!v3d) {
1021                 /* no 3d view, this wont happen often */
1022                 base->lay = 1;
1023                 VECCOPY(ob->loc, G.scene->cursor);
1024
1025                 /* return now because v3d->viewquat isnt available */
1026                 return;
1027         } else if (v3d->localview) {
1028                 base->lay= ob->lay= v3d->layact + v3d->lay;
1029                 VECCOPY(ob->loc, v3d->cursor);
1030         } else {
1031                 base->lay= ob->lay= v3d->layact;
1032                 VECCOPY(ob->loc, G.scene->cursor);
1033         }
1034
1035         if (U.flag & USER_ADD_VIEWALIGNED) {
1036                 v3d->viewquat[0]= -v3d->viewquat[0];
1037
1038                 /* Quats arnt used yet */
1039                 /*if (ob->transflag & OB_QUAT) {
1040                         QUATCOPY(ob->quat, v3d->viewquat);
1041                 } else {*/
1042                         QuatToEul(v3d->viewquat, ob->rot);
1043                 /*}*/
1044                 v3d->viewquat[0]= -v3d->viewquat[0];
1045         }
1046 }
1047
1048 SoftBody *copy_softbody(SoftBody *sb)
1049 {
1050         SoftBody *sbn;
1051
1052         if (sb==NULL) return(NULL);
1053
1054         sbn= MEM_dupallocN(sb);
1055         sbn->totspring= sbn->totpoint= 0;
1056         sbn->bpoint= NULL;
1057         sbn->bspring= NULL;
1058
1059         sbn->keys= NULL;
1060         sbn->totkey= sbn->totpointkey= 0;
1061
1062         sbn->scratch= NULL;
1063
1064         sbn->pointcache= BKE_ptcache_copy(sb->pointcache);
1065
1066         return sbn;
1067 }
1068
1069 BulletSoftBody *copy_bulletsoftbody(BulletSoftBody *bsb)
1070 {
1071         BulletSoftBody *bsbn;
1072
1073         if (bsb == NULL)
1074                 return NULL;
1075         bsbn = MEM_dupallocN(bsb);
1076         /* no pointer in this structure yet */
1077         return bsbn;
1078 }
1079
1080 ParticleSystem *copy_particlesystem(ParticleSystem *psys)
1081 {
1082         ParticleSystem *psysn;
1083         ParticleData *pa;
1084         int a;
1085
1086         psysn= MEM_dupallocN(psys);
1087         psysn->particles= MEM_dupallocN(psys->particles);
1088         psysn->child= MEM_dupallocN(psys->child);
1089
1090         for(a=0, pa=psysn->particles; a<psysn->totpart; a++, pa++) {
1091                 if(pa->hair)
1092                         pa->hair= MEM_dupallocN(pa->hair);
1093                 if(pa->keys)
1094                         pa->keys= MEM_dupallocN(pa->keys);
1095         }
1096
1097         if(psys->soft) {
1098                 psysn->soft= copy_softbody(psys->soft);
1099                 psysn->soft->particles = psysn;
1100         }
1101
1102         psysn->pathcache= NULL;
1103         psysn->childcache= NULL;
1104         psysn->edit= NULL;
1105         psysn->effectors.first= psysn->effectors.last= 0;
1106
1107         psysn->pathcachebufs.first = psysn->pathcachebufs.last = NULL;
1108         psysn->childcachebufs.first = psysn->childcachebufs.last = NULL;
1109         psysn->reactevents.first = psysn->reactevents.last = NULL;
1110         psysn->renderdata = NULL;
1111
1112         psysn->pointcache= BKE_ptcache_copy(psys->pointcache);
1113
1114         id_us_plus((ID *)psysn->part);
1115
1116         return psysn;
1117 }
1118
1119 void copy_object_particlesystems(Object *obn, Object *ob)
1120 {
1121         ParticleSystemModifierData *psmd;
1122         ParticleSystem *psys, *npsys;
1123         ModifierData *md;
1124
1125         obn->particlesystem.first= obn->particlesystem.last= NULL;
1126         for(psys=ob->particlesystem.first; psys; psys=psys->next) {
1127                 npsys= copy_particlesystem(psys);
1128
1129                 BLI_addtail(&obn->particlesystem, npsys);
1130
1131                 /* need to update particle modifiers too */
1132                 for(md=obn->modifiers.first; md; md=md->next) {
1133                         if(md->type==eModifierType_ParticleSystem) {
1134                                 psmd= (ParticleSystemModifierData*)md;
1135                                 if(psmd->psys==psys)
1136                                         psmd->psys= npsys;
1137                         }
1138                 }
1139         }
1140 }
1141
1142 void copy_object_softbody(Object *obn, Object *ob)
1143 {
1144         if(ob->soft)
1145                 obn->soft= copy_softbody(ob->soft);
1146 }
1147
1148 static void copy_object_pose(Object *obn, Object *ob)
1149 {
1150         bPoseChannel *chan;
1151
1152         /* note: need to clear obn->pose pointer first, so that copy_pose works (otherwise there's a crash) */
1153         obn->pose= NULL;
1154         copy_pose(&obn->pose, ob->pose, 1);     /* 1 = copy constraints */
1155
1156         for (chan = obn->pose->chanbase.first; chan; chan=chan->next){
1157                 bConstraint *con;
1158
1159                 chan->flag &= ~(POSE_LOC|POSE_ROT|POSE_SIZE);
1160
1161                 for (con= chan->constraints.first; con; con= con->next) {
1162                         bConstraintTypeInfo *cti= constraint_get_typeinfo(con);
1163                         ListBase targets = {NULL, NULL};
1164                         bConstraintTarget *ct;
1165
1166                         if(con->ipo) {
1167                                 IpoCurve *icu;
1168                                 for(icu= con->ipo->curve.first; icu; icu= icu->next) {
1169                                         if(icu->driver && icu->driver->ob==ob)
1170                                                 icu->driver->ob= obn;
1171                                 }
1172                         }
1173
1174                         if (cti && cti->get_constraint_targets) {
1175                                 cti->get_constraint_targets(con, &targets);
1176
1177                                 for (ct= targets.first; ct; ct= ct->next) {
1178                                         if (ct->tar == ob)
1179                                                 ct->tar = obn;
1180                                 }
1181
1182                                 if (cti->flush_constraint_targets)
1183                                         cti->flush_constraint_targets(con, &targets, 0);
1184                         }
1185                 }
1186         }
1187 }
1188
1189 Object *copy_object(Object *ob)
1190 {
1191         Object *obn;
1192         ModifierData *md;
1193         int a;
1194
1195         obn= copy_libblock(ob);
1196
1197         if(ob->totcol) {
1198                 obn->mat= MEM_dupallocN(ob->mat);
1199         }
1200
1201         if(ob->bb) obn->bb= MEM_dupallocN(ob->bb);
1202         obn->path= NULL;
1203         obn->flag &= ~OB_FROMGROUP;
1204
1205         obn->modifiers.first = obn->modifiers.last= NULL;
1206
1207         for (md=ob->modifiers.first; md; md=md->next) {
1208                 ModifierData *nmd = modifier_new(md->type);
1209                 modifier_copyData(md, nmd);
1210                 BLI_addtail(&obn->modifiers, nmd);
1211         }
1212 #ifndef DISABLE_PYTHON
1213         BPY_copy_scriptlink(&ob->scriptlink);
1214 #endif
1215         obn->prop.first = obn->prop.last = NULL;
1216         copy_properties(&obn->prop, &ob->prop);
1217
1218         copy_sensors(&obn->sensors, &ob->sensors);
1219         copy_controllers(&obn->controllers, &ob->controllers);
1220         copy_actuators(&obn->actuators, &ob->actuators);
1221
1222         if(ob->pose) {
1223                 copy_object_pose(obn, ob);
1224                 /* backwards compat... non-armatures can get poses in older files? */
1225                 if(ob->type==OB_ARMATURE)
1226                         armature_rebuild_pose(obn, obn->data);
1227         }
1228         copy_defgroups(&obn->defbase, &ob->defbase);
1229         copy_nlastrips(&obn->nlastrips, &ob->nlastrips);
1230         copy_constraints (&obn->constraints, &ob->constraints);
1231
1232         clone_constraint_channels (&obn->constraintChannels, &ob->constraintChannels);
1233
1234         /* increase user numbers */
1235         id_us_plus((ID *)obn->data);
1236         id_us_plus((ID *)obn->ipo);
1237         id_us_plus((ID *)obn->action);
1238         id_us_plus((ID *)obn->dup_group);
1239
1240         for(a=0; a<obn->totcol; a++) id_us_plus((ID *)obn->mat[a]);
1241
1242         obn->disp.first= obn->disp.last= NULL;
1243
1244         if(ob->pd){
1245                 obn->pd= MEM_dupallocN(ob->pd);
1246                 if(obn->pd->tex)
1247                         id_us_plus(&(obn->pd->tex->id));
1248         }
1249         obn->soft= copy_softbody(ob->soft);
1250         obn->bsoft = copy_bulletsoftbody(ob->bsoft);
1251
1252         copy_object_particlesystems(obn, ob);
1253
1254         obn->derivedDeform = NULL;
1255         obn->derivedFinal = NULL;
1256
1257 #ifdef WITH_VERSE
1258         obn->vnode = NULL;
1259 #endif
1260
1261         obn->gpulamp.first = obn->gpulamp.last = NULL;
1262
1263         return obn;
1264 }
1265
1266 void expand_local_object(Object *ob)
1267 {
1268         bActionStrip *strip;
1269         ParticleSystem *psys;
1270         int a;
1271
1272         id_lib_extern((ID *)ob->action);
1273         id_lib_extern((ID *)ob->ipo);
1274         id_lib_extern((ID *)ob->data);
1275         id_lib_extern((ID *)ob->dup_group);
1276
1277         for(a=0; a<ob->totcol; a++) {
1278                 id_lib_extern((ID *)ob->mat[a]);
1279         }
1280         for (strip=ob->nlastrips.first; strip; strip=strip->next) {
1281                 id_lib_extern((ID *)strip->act);
1282         }
1283         for(psys=ob->particlesystem.first; psys; psys=psys->next)
1284                 id_lib_extern((ID *)psys->part);
1285 }
1286
1287 void make_local_object(Object *ob)
1288 {
1289         Object *obn;
1290         Scene *sce;
1291         Base *base;
1292         int local=0, lib=0;
1293
1294         /* - only lib users: do nothing
1295             * - only local users: set flag
1296             * - mixed: make copy
1297             */
1298
1299         if(ob->id.lib==NULL) return;
1300
1301         ob->proxy= ob->proxy_from= NULL;
1302
1303         if(ob->id.us==1) {
1304                 ob->id.lib= NULL;
1305                 ob->id.flag= LIB_LOCAL;
1306                 new_id(0, (ID *)ob, 0);
1307
1308         }
1309         else {
1310                 sce= G.main->scene.first;
1311                 while(sce) {
1312                         base= sce->base.first;
1313                         while(base) {
1314                                 if(base->object==ob) {
1315                                         if(sce->id.lib) lib++;
1316                                         else local++;
1317                                         break;
1318                                 }
1319                                 base= base->next;
1320                         }
1321                         sce= sce->id.next;
1322                 }
1323
1324                 if(local && lib==0) {
1325                         ob->id.lib= 0;
1326                         ob->id.flag= LIB_LOCAL;
1327                         new_id(0, (ID *)ob, 0);
1328                 }
1329                 else if(local && lib) {
1330                         obn= copy_object(ob);
1331                         obn->id.us= 0;
1332
1333                         sce= G.main->scene.first;
1334                         while(sce) {
1335                                 if(sce->id.lib==0) {
1336                                         base= sce->base.first;
1337                                         while(base) {
1338                                                 if(base->object==ob) {
1339                                                         base->object= obn;
1340                                                         obn->id.us++;
1341                                                         ob->id.us--;
1342                                                 }
1343                                                 base= base->next;
1344                                         }
1345                                 }
1346                                 sce= sce->id.next;
1347                         }
1348                 }
1349         }
1350
1351         expand_local_object(ob);
1352 }
1353
1354 /* *************** PROXY **************** */
1355
1356 /* when you make proxy, ensure the exposed layers are extern */
1357 void armature_set_id_extern(Object *ob)
1358 {
1359         bArmature *arm= ob->data;
1360         bPoseChannel *pchan;
1361         int lay= arm->layer_protected;
1362
1363         for (pchan = ob->pose->chanbase.first; pchan; pchan=pchan->next) {
1364                 if(!(pchan->bone->layer & lay))
1365                         id_lib_extern((ID *)pchan->custom);
1366         }
1367
1368 }
1369
1370 /* proxy rule: lib_object->proxy_from == the one we borrow from, set temporally while object_update */
1371 /*             local_object->proxy == pointer to library object, saved in files and read */
1372 /*             local_object->proxy_group == pointer to group dupli-object, saved in files and read */
1373
1374 void object_make_proxy(Object *ob, Object *target, Object *gob)
1375 {
1376         /* paranoia checks */
1377         if(ob->id.lib || target->id.lib==NULL) {
1378                 printf("cannot make proxy\n");
1379                 return;
1380         }
1381
1382         ob->proxy= target;
1383         ob->proxy_group= gob;
1384         id_lib_extern(&target->id);
1385
1386         ob->recalc= target->recalc= OB_RECALC;
1387
1388         /* copy transform */
1389         if(gob) {
1390                 VECCOPY(ob->loc, gob->loc);
1391                 VECCOPY(ob->rot, gob->rot);
1392                 VECCOPY(ob->size, gob->size);
1393
1394                 group_tag_recalc(gob->dup_group);
1395         }
1396         else {
1397                 VECCOPY(ob->loc, target->loc);
1398                 VECCOPY(ob->rot, target->rot);
1399                 VECCOPY(ob->size, target->size);
1400         }
1401
1402         ob->parent= target->parent;     /* libdata */
1403         Mat4CpyMat4(ob->parentinv, target->parentinv);
1404         ob->ipo= target->ipo;           /* libdata */
1405
1406         /* skip constraints, constraintchannels, nla? */
1407
1408         /* set object type and link to data */
1409         ob->type= target->type;
1410         ob->data= target->data;
1411         id_us_plus((ID *)ob->data);             /* ensures lib data becomes LIB_EXTERN */
1412
1413         /* copy material and index information */
1414         ob->actcol= ob->totcol= 0;
1415         if(ob->mat) MEM_freeN(ob->mat);
1416         ob->mat = NULL;
1417         if ((target->totcol) && (target->mat) && OB_SUPPORT_MATERIAL(ob)) {
1418                 int i;
1419                 ob->colbits = target->colbits;
1420
1421                 ob->actcol= target->actcol;
1422                 ob->totcol= target->totcol;
1423
1424                 ob->mat = MEM_dupallocN(target->mat);
1425                 for(i=0; i<target->totcol; i++) {
1426                         /* dont need to run test_object_materials since we know this object is new and not used elsewhere */
1427                         id_us_plus((ID *)ob->mat[i]);
1428                 }
1429         }
1430
1431         /* type conversions */
1432         if(target->type == OB_ARMATURE) {
1433                 copy_object_pose(ob, target);   /* data copy, object pointers in constraints */
1434                 rest_pose(ob->pose);                    /* clear all transforms in channels */
1435                 armature_rebuild_pose(ob, ob->data);    /* set all internal links */
1436
1437                 armature_set_id_extern(ob);
1438         }
1439 }
1440
1441
1442 /* *************** CALC ****************** */
1443
1444 /* there is also a timing calculation in drawobject() */
1445
1446 float bluroffs= 0.0f, fieldoffs= 0.0f;
1447 int no_speed_curve= 0;
1448
1449 /* ugly calls from render */
1450 void set_mblur_offs(float blur)
1451 {
1452         bluroffs= blur;
1453 }
1454
1455 void set_field_offs(float field)
1456 {
1457         fieldoffs= field;
1458 }
1459
1460 void disable_speed_curve(int val)
1461 {
1462         no_speed_curve= val;
1463 }
1464
1465 /* ob can be NULL */
1466 float bsystem_time(Object *ob, float cfra, float ofs)
1467 {
1468         /* returns float ( see frame_to_float in ipo.c) */
1469
1470         /* bluroffs and fieldoffs are ugly globals that are set by render */
1471         cfra+= bluroffs+fieldoffs;
1472
1473         /* global time */
1474         cfra*= G.scene->r.framelen;
1475
1476         if (ob) {
1477                 if (no_speed_curve==0 && ob->ipo)
1478                         cfra= calc_ipo_time(ob->ipo, cfra);
1479
1480                 /* ofset frames */
1481                 if ((ob->ipoflag & OB_OFFS_PARENT) && (ob->partype & PARSLOW)==0)
1482                         cfra-= give_timeoffset(ob);
1483         }
1484
1485         cfra-= ofs;
1486
1487         return cfra;
1488 }
1489
1490 void object_scale_to_mat3(Object *ob, float mat[][3])
1491 {
1492         float vec[3];
1493         if(ob->ipo) {
1494                 vec[0]= ob->size[0]+ob->dsize[0];
1495                 vec[1]= ob->size[1]+ob->dsize[1];
1496                 vec[2]= ob->size[2]+ob->dsize[2];
1497                 SizeToMat3(vec, mat);
1498         }
1499         else {
1500                 SizeToMat3(ob->size, mat);
1501         }
1502 }
1503
1504 void object_rot_to_mat3(Object *ob, float mat[][3])
1505 {
1506         float vec[3];
1507         if(ob->ipo) {
1508                 vec[0]= ob->rot[0]+ob->drot[0];
1509                 vec[1]= ob->rot[1]+ob->drot[1];
1510                 vec[2]= ob->rot[2]+ob->drot[2];
1511                 EulToMat3(vec, mat);
1512         }
1513         else {
1514                 EulToMat3(ob->rot, mat);
1515         }
1516 }
1517
1518 void object_to_mat3(Object *ob, float mat[][3]) /* no parent */
1519 {
1520         float smat[3][3];
1521         float rmat[3][3];
1522         /*float q1[4];*/
1523
1524         /* size */
1525         object_scale_to_mat3(ob, smat);
1526
1527         /* rot */
1528         /* Quats arnt used yet */
1529         /*if(ob->transflag & OB_QUAT) {
1530                 if(ob->ipo) {
1531                         QuatMul(q1, ob->quat, ob->dquat);
1532                         QuatToMat3(q1, rmat);
1533                 }
1534                 else {
1535                         QuatToMat3(ob->quat, rmat);
1536                 }
1537         }
1538         else {*/
1539                 object_rot_to_mat3(ob, rmat);
1540         /*}*/
1541         Mat3MulMat3(mat, rmat, smat);
1542 }
1543
1544 void object_to_mat4(Object *ob, float mat[][4])
1545 {
1546         float tmat[3][3];
1547
1548         object_to_mat3(ob, tmat);
1549
1550         Mat4CpyMat3(mat, tmat);
1551
1552         VECCOPY(mat[3], ob->loc);
1553         if(ob->ipo) {
1554                 mat[3][0]+= ob->dloc[0];
1555                 mat[3][1]+= ob->dloc[1];
1556                 mat[3][2]+= ob->dloc[2];
1557         }
1558 }
1559
1560 int enable_cu_speed= 1;
1561
1562 static void ob_parcurve(Object *ob, Object *par, float mat[][4])
1563 {
1564         Curve *cu;
1565         float q[4], vec[4], dir[3], quat[4], x1, ctime;
1566         float timeoffs = 0.0, sf_orig = 0.0;
1567
1568         Mat4One(mat);
1569
1570         cu= par->data;
1571         if(cu->path==NULL || cu->path->data==NULL) /* only happens on reload file, but violates depsgraph still... fix! */
1572                 makeDispListCurveTypes(par, 0);
1573         if(cu->path==NULL) return;
1574
1575         /* exception, timeoffset is regarded as distance offset */
1576         if(cu->flag & CU_OFFS_PATHDIST) {
1577                 timeoffs = give_timeoffset(ob);
1578                 SWAP(float, sf_orig, ob->sf);
1579         }
1580
1581         /* catch exceptions: feature for nla stride editing */
1582         if(ob->ipoflag & OB_DISABLE_PATH) {
1583                 ctime= 0.0f;
1584         }
1585         /* catch exceptions: curve paths used as a duplicator */
1586         else if(enable_cu_speed) {
1587                 ctime= bsystem_time(ob, (float)G.scene->r.cfra, 0.0);
1588
1589                 if(calc_ipo_spec(cu->ipo, CU_SPEED, &ctime)==0) {
1590                         ctime /= cu->pathlen;
1591                         CLAMP(ctime, 0.0, 1.0);
1592                 }
1593         }
1594         else {
1595                 ctime= G.scene->r.cfra - give_timeoffset(ob);
1596                 ctime /= cu->pathlen;
1597
1598                 CLAMP(ctime, 0.0, 1.0);
1599         }
1600
1601         /* time calculus is correct, now apply distance offset */
1602         if(cu->flag & CU_OFFS_PATHDIST) {
1603                 ctime += timeoffs/cu->path->totdist;
1604
1605                 /* restore */
1606                 SWAP(float, sf_orig, ob->sf);
1607         }
1608
1609
1610         /* vec: 4 items! */
1611         if( where_on_path(par, ctime, vec, dir) ) {
1612
1613                 if(cu->flag & CU_FOLLOW) {
1614                         vectoquat(dir, ob->trackflag, ob->upflag, quat);
1615
1616                         /* the tilt */
1617                         Normalize(dir);
1618                         q[0]= (float)cos(0.5*vec[3]);
1619                         x1= (float)sin(0.5*vec[3]);
1620                         q[1]= -x1*dir[0];
1621                         q[2]= -x1*dir[1];
1622                         q[3]= -x1*dir[2];
1623                         QuatMul(quat, q, quat);
1624
1625                         QuatToMat4(quat, mat);
1626                 }
1627
1628                 VECCOPY(mat[3], vec);
1629
1630         }
1631 }
1632
1633 static void ob_parbone(Object *ob, Object *par, float mat[][4])
1634 {
1635         bPoseChannel *pchan;
1636         bArmature *arm;
1637         float vec[3];
1638
1639         arm=get_armature(par);
1640         if (!arm) {
1641                 Mat4One(mat);
1642                 return;
1643         }
1644
1645         /* Make sure the bone is still valid */
1646         pchan= get_pose_channel(par->pose, ob->parsubstr);
1647         if (!pchan){
1648                 printf ("Object %s with Bone parent: bone %s doesn't exist\n", ob->id.name+2, ob->parsubstr);
1649                 Mat4One(mat);
1650                 return;
1651         }
1652
1653         /* get bone transform */
1654         Mat4CpyMat4(mat, pchan->pose_mat);
1655
1656         /* but for backwards compatibility, the child has to move to the tail */
1657         VECCOPY(vec, mat[1]);
1658         VecMulf(vec, pchan->bone->length);
1659         VecAddf(mat[3], mat[3], vec);
1660 }
1661
1662 static void give_parvert(Object *par, int nr, float *vec)
1663 {
1664         int a, count;
1665
1666         vec[0]=vec[1]=vec[2]= 0.0f;
1667
1668         if(par->type==OB_MESH) {
1669                 if(G.obedit && (par->data==G.obedit->data)) {
1670                         EditMesh *em = G.editMesh;
1671                         EditVert *eve;
1672
1673                         for(eve= em->verts.first; eve; eve= eve->next) {
1674                                 if(eve->keyindex==nr) {
1675                                         memcpy(vec, eve->co, sizeof(float)*3);
1676                                         break;
1677                                 }
1678                         }
1679                 }
1680                 else {
1681                         DerivedMesh *dm = par->derivedFinal;
1682
1683                         if(dm) {
1684                                 int i, count = 0, numVerts = dm->getNumVerts(dm);
1685                                 int *index = (int *)dm->getVertDataArray(dm, CD_ORIGINDEX);
1686                                 float co[3];
1687
1688                                 /* get the average of all verts with (original index == nr) */
1689                                 for(i = 0; i < numVerts; ++i, ++index) {
1690                                         if(*index == nr) {
1691                                                 dm->getVertCo(dm, i, co);
1692                                                 VecAddf(vec, vec, co);
1693                                                 count++;
1694                                         }
1695                                 }
1696
1697                                 if (count==0) {
1698                                         /* keep as 0,0,0 */
1699                                 } else if(count > 0) {
1700                                         VecMulf(vec, 1.0f / count);
1701                                 } else {
1702                                         /* use first index if its out of range */
1703                                         dm->getVertCo(dm, 0, vec);
1704                                 }
1705                         }
1706                 }
1707         }
1708         else if ELEM(par->type, OB_CURVE, OB_SURF) {
1709                 Nurb *nu;
1710                 Curve *cu;
1711                 BPoint *bp;
1712                 BezTriple *bezt;
1713                 int found= 0;
1714
1715                 cu= par->data;
1716                 nu= cu->nurb.first;
1717                 if(par==G.obedit) nu= editNurb.first;
1718
1719                 count= 0;
1720                 while(nu && !found) {
1721                         if((nu->type & 7)==CU_BEZIER) {
1722                                 bezt= nu->bezt;
1723                                 a= nu->pntsu;
1724                                 while(a--) {
1725                                         if(count==nr) {
1726                                                 found= 1;
1727                                                 VECCOPY(vec, bezt->vec[1]);
1728                                                 break;
1729                                         }
1730                                         count++;
1731                                         bezt++;
1732                                 }
1733                         }
1734                         else {
1735                                 bp= nu->bp;
1736                                 a= nu->pntsu*nu->pntsv;
1737                                 while(a--) {
1738                                         if(count==nr) {
1739                                                 found= 1;
1740                                                 memcpy(vec, bp->vec, sizeof(float)*3);
1741                                                 break;
1742                                         }
1743                                         count++;
1744                                         bp++;
1745                                 }
1746                         }
1747                         nu= nu->next;
1748                 }
1749
1750         }
1751         else if(par->type==OB_LATTICE) {
1752                 Lattice *latt= par->data;
1753                 BPoint *bp;
1754                 DispList *dl = find_displist(&par->disp, DL_VERTS);
1755                 float *co = dl?dl->verts:NULL;
1756
1757                 if(par==G.obedit) latt= editLatt;
1758
1759                 a= latt->pntsu*latt->pntsv*latt->pntsw;
1760                 count= 0;
1761                 bp= latt->def;
1762                 while(a--) {
1763                         if(count==nr) {
1764                                 if(co)
1765                                         memcpy(vec, co, 3*sizeof(float));
1766                                 else
1767                                         memcpy(vec, bp->vec, 3*sizeof(float));
1768                                 break;
1769                         }
1770                         count++;
1771                         if(co) co+= 3;
1772                         else bp++;
1773                 }
1774         }
1775 }
1776
1777 static void ob_parvert3(Object *ob, Object *par, float mat[][4])
1778 {
1779         float cmat[3][3], v1[3], v2[3], v3[3], q[4];
1780
1781         /* in local ob space */
1782         Mat4One(mat);
1783
1784         if ELEM4(par->type, OB_MESH, OB_SURF, OB_CURVE, OB_LATTICE) {
1785
1786                 give_parvert(par, ob->par1, v1);
1787                 give_parvert(par, ob->par2, v2);
1788                 give_parvert(par, ob->par3, v3);
1789
1790                 triatoquat(v1, v2, v3, q);
1791                 QuatToMat3(q, cmat);
1792                 Mat4CpyMat3(mat, cmat);
1793
1794                 if(ob->type==OB_CURVE) {
1795                         VECCOPY(mat[3], v1);
1796                 }
1797                 else {
1798                         VecAddf(mat[3], v1, v2);
1799                         VecAddf(mat[3], mat[3], v3);
1800                         VecMulf(mat[3], 0.3333333f);
1801                 }
1802         }
1803 }
1804
1805 static int no_parent_ipo=0;
1806 void set_no_parent_ipo(int val)
1807 {
1808         no_parent_ipo= val;
1809 }
1810
1811 static int during_script_flag=0;
1812 void disable_where_script(short on)
1813 {
1814         during_script_flag= on;
1815 }
1816
1817 int during_script(void) {
1818         return during_script_flag;
1819 }
1820
1821 static int during_scriptlink_flag=0;
1822 void disable_where_scriptlink(short on)
1823 {
1824         during_scriptlink_flag= on;
1825 }
1826
1827 int during_scriptlink(void) {
1828         return during_scriptlink_flag;
1829 }
1830
1831 void where_is_object_time(Object *ob, float ctime)
1832 {
1833         float *fp1, *fp2, slowmat[4][4] = MAT4_UNITY;
1834         float stime, fac1, fac2, vec[3];
1835         int a;
1836         int pop;
1837
1838         /* new version: correct parent+vertexparent and track+parent */
1839         /* this one only calculates direct attached parent and track */
1840         /* is faster, but should keep track of timeoffs */
1841
1842         if(ob==NULL) return;
1843
1844         /* this is needed to be able to grab objects with ipos, otherwise it always freezes them */
1845         stime= bsystem_time(ob, ctime, 0.0);
1846         if(stime != ob->ctime) {
1847
1848                 ob->ctime= stime;
1849
1850                 if(ob->ipo) {
1851                         calc_ipo(ob->ipo, stime);
1852                         execute_ipo((ID *)ob, ob->ipo);
1853                 }
1854                 else
1855                         do_all_object_actions(ob);
1856
1857                 /* do constraint ipos ..., note it needs stime (0 = all ipos) */
1858                 do_constraint_channels(&ob->constraints, &ob->constraintChannels, stime, 0);
1859         }
1860         else {
1861                 /* but, the drivers have to be done */
1862                 if(ob->ipo) do_ob_ipodrivers(ob, ob->ipo, stime);
1863                 /* do constraint ipos ..., note it needs stime (1 = only drivers ipos) */
1864                 do_constraint_channels(&ob->constraints, &ob->constraintChannels, stime, 1);
1865         }
1866
1867         if(ob->parent) {
1868                 Object *par= ob->parent;
1869
1870                 if(ob->ipoflag & OB_OFFS_PARENT) ctime-= give_timeoffset(ob);
1871
1872                 /* hurms, code below conflicts with depgraph... (ton) */
1873                 /* and even worse, it gives bad effects for NLA stride too (try ctime != par->ctime, with MBlur) */
1874                 pop= 0;
1875                 if(no_parent_ipo==0 && stime != par->ctime) {
1876
1877                         // only for ipo systems?
1878                         pushdata(par, sizeof(Object));
1879                         pop= 1;
1880
1881                         if(par->proxy_from);    // was a copied matrix, no where_is! bad...
1882                         else where_is_object_time(par, ctime);
1883                 }
1884
1885                 solve_parenting(ob, par, ob->obmat, slowmat, 0);
1886
1887                 if(pop) {
1888                         poplast(par);
1889                 }
1890
1891                 if(ob->partype & PARSLOW) {
1892                         // include framerate
1893
1894                         fac1= (1.0f/(1.0f+ fabs(give_timeoffset(ob))));
1895                         if(fac1>=1.0) return;
1896                         fac2= 1.0f-fac1;
1897
1898                         fp1= ob->obmat[0];
1899                         fp2= slowmat[0];
1900                         for(a=0; a<16; a++, fp1++, fp2++) {
1901                                 fp1[0]= fac1*fp1[0] + fac2*fp2[0];
1902                         }
1903                 }
1904
1905         }
1906         else {
1907                 object_to_mat4(ob, ob->obmat);
1908         }
1909
1910         /* Handle tracking */
1911         if(ob->track) {
1912                 if( ctime != ob->track->ctime) where_is_object_time(ob->track, ctime);
1913                 solve_tracking (ob, ob->track->obmat);
1914
1915         }
1916
1917         /* solve constraints */
1918         if (ob->constraints.first) {
1919                 bConstraintOb *cob;
1920
1921                 cob= constraints_make_evalob(ob, NULL, CONSTRAINT_OBTYPE_OBJECT);
1922
1923                 /* constraints need ctime, not stime. Some call where_is_object_time and bsystem_time */
1924                 solve_constraints (&ob->constraints, cob, ctime);
1925
1926                 constraints_clear_evalob(cob);
1927         }
1928 #ifndef DISABLE_PYTHON
1929         if(ob->scriptlink.totscript && !during_script()) {
1930                 if (G.f & G_DOSCRIPTLINKS) BPY_do_pyscript((ID *)ob, SCRIPT_REDRAW);
1931         }
1932 #endif
1933
1934         /* set negative scale flag in object */
1935         Crossf(vec, ob->obmat[0], ob->obmat[1]);
1936         if( Inpf(vec, ob->obmat[2]) < 0.0 ) ob->transflag |= OB_NEG_SCALE;
1937         else ob->transflag &= ~OB_NEG_SCALE;
1938 }
1939
1940 static void solve_parenting (Object *ob, Object *par, float obmat[][4], float slowmat[][4], int simul)
1941 {
1942         float totmat[4][4];
1943         float tmat[4][4];
1944         float locmat[4][4];
1945         float vec[3];
1946         int ok;
1947
1948         object_to_mat4(ob, locmat);
1949
1950         if(ob->partype & PARSLOW) Mat4CpyMat4(slowmat, obmat);
1951
1952
1953         switch(ob->partype & PARTYPE) {
1954         case PAROBJECT:
1955                 ok= 0;
1956                 if(par->type==OB_CURVE) {
1957                         if( ((Curve *)par->data)->flag & CU_PATH ) {
1958                                 ob_parcurve(ob, par, tmat);
1959                                 ok= 1;
1960                         }
1961                 }
1962
1963                 if(ok) Mat4MulSerie(totmat, par->obmat, tmat,
1964                         NULL, NULL, NULL, NULL, NULL, NULL);
1965                 else Mat4CpyMat4(totmat, par->obmat);
1966
1967                 break;
1968         case PARBONE:
1969                 ob_parbone(ob, par, tmat);
1970                 Mat4MulSerie(totmat, par->obmat, tmat,
1971                         NULL, NULL, NULL, NULL, NULL, NULL);
1972                 break;
1973
1974         case PARVERT1:
1975                 Mat4One(totmat);
1976                 if (simul){
1977                         VECCOPY(totmat[3], par->obmat[3]);
1978                 }
1979                 else{
1980                         give_parvert(par, ob->par1, vec);
1981                         VecMat4MulVecfl(totmat[3], par->obmat, vec);
1982                 }
1983                 break;
1984         case PARVERT3:
1985                 ob_parvert3(ob, par, tmat);
1986
1987                 Mat4MulSerie(totmat, par->obmat, tmat,
1988                         NULL, NULL, NULL, NULL, NULL, NULL);
1989                 break;
1990
1991         case PARSKEL:
1992                 Mat4CpyMat4(totmat, par->obmat);
1993                 break;
1994         }
1995
1996         // total
1997         Mat4MulSerie(tmat, totmat, ob->parentinv,
1998                 NULL, NULL, NULL, NULL, NULL, NULL);
1999         Mat4MulSerie(obmat, tmat, locmat,
2000                 NULL, NULL, NULL, NULL, NULL, NULL);
2001
2002         if (simul) {
2003
2004         }
2005         else{
2006                 // external usable originmat
2007                 Mat3CpyMat4(originmat, tmat);
2008
2009                 // origin, voor help line
2010                 if( (ob->partype & 15)==PARSKEL ) {
2011                         VECCOPY(ob->orig, par->obmat[3]);
2012                 }
2013                 else {
2014                         VECCOPY(ob->orig, totmat[3]);
2015                 }
2016         }
2017
2018 }
2019 void solve_tracking (Object *ob, float targetmat[][4])
2020 {
2021         float quat[4];
2022         float vec[3];
2023         float totmat[3][3];
2024         float tmat[4][4];
2025
2026         VecSubf(vec, ob->obmat[3], targetmat[3]);
2027         vectoquat(vec, ob->trackflag, ob->upflag, quat);
2028         QuatToMat3(quat, totmat);
2029
2030         if(ob->parent && (ob->transflag & OB_POWERTRACK)) {
2031                 /* 'temporal' : clear parent info */
2032                 object_to_mat4(ob, tmat);
2033                 tmat[0][3]= ob->obmat[0][3];
2034                 tmat[1][3]= ob->obmat[1][3];
2035                 tmat[2][3]= ob->obmat[2][3];
2036                 tmat[3][0]= ob->obmat[3][0];
2037                 tmat[3][1]= ob->obmat[3][1];
2038                 tmat[3][2]= ob->obmat[3][2];
2039                 tmat[3][3]= ob->obmat[3][3];
2040         }
2041         else Mat4CpyMat4(tmat, ob->obmat);
2042
2043         Mat4MulMat34(ob->obmat, totmat, tmat);
2044
2045 }
2046
2047 void where_is_object(Object *ob)
2048 {
2049         where_is_object_time(ob, (float)G.scene->r.cfra);
2050 }
2051
2052
2053 void where_is_object_simul(Object *ob)
2054 /* was written for the old game engine (until 2.04) */
2055 /* It seems that this function is only called
2056 for a lamp that is the child of another object */
2057 {
2058         Object *par;
2059         Ipo *ipo;
2060         float *fp1, *fp2;
2061         float slowmat[4][4];
2062         float fac1, fac2;
2063         int a;
2064
2065         /* NO TIMEOFFS */
2066
2067         /* no ipo! (because of dloc and realtime-ipos) */
2068         ipo= ob->ipo;
2069         ob->ipo= NULL;
2070
2071         if(ob->parent) {
2072                 par= ob->parent;
2073
2074                 solve_parenting(ob, par, ob->obmat, slowmat, 1);
2075
2076                 if(ob->partype & PARSLOW) {
2077
2078                         fac1= (float)(1.0/(1.0+ fabs(give_timeoffset(ob))));
2079                         fac2= 1.0f-fac1;
2080                         fp1= ob->obmat[0];
2081                         fp2= slowmat[0];
2082                         for(a=0; a<16; a++, fp1++, fp2++) {
2083                                 fp1[0]= fac1*fp1[0] + fac2*fp2[0];
2084                         }
2085                 }
2086
2087         }
2088         else {
2089                 object_to_mat4(ob, ob->obmat);
2090         }
2091
2092         if(ob->track)
2093                 solve_tracking(ob, ob->track->obmat);
2094
2095         /* solve constraints */
2096         if (ob->constraints.first) {
2097                 bConstraintOb *cob;
2098
2099                 cob= constraints_make_evalob(ob, NULL, CONSTRAINT_OBTYPE_OBJECT);
2100                 solve_constraints (&ob->constraints, cob, G.scene->r.cfra);
2101                 constraints_clear_evalob(cob);
2102         }
2103
2104         /*  WATCH IT!!! */
2105         ob->ipo= ipo;
2106 }
2107
2108 /* for calculation of the inverse parent transform, only used for editor */
2109 void what_does_parent(Object *ob)
2110 {
2111         clear_workob();
2112         Mat4One(workob.obmat);
2113         Mat4One(workob.parentinv);
2114         Mat4One(workob.constinv);
2115         workob.parent= ob->parent;
2116         workob.track= ob->track;
2117
2118         workob.trackflag= ob->trackflag;
2119         workob.upflag= ob->upflag;
2120
2121         workob.partype= ob->partype;
2122         workob.par1= ob->par1;
2123         workob.par2= ob->par2;
2124         workob.par3= ob->par3;
2125
2126         workob.constraints.first = ob->constraints.first;
2127         workob.constraints.last = ob->constraints.last;
2128
2129         strcpy(workob.parsubstr, ob->parsubstr);
2130
2131         where_is_object(&workob);
2132 }
2133
2134 BoundBox *unit_boundbox()
2135 {
2136         BoundBox *bb;
2137         float min[3] = {-1,-1,-1}, max[3] = {-1,-1,-1};
2138
2139         bb= MEM_callocN(sizeof(BoundBox), "bb");
2140         boundbox_set_from_min_max(bb, min, max);
2141
2142         return bb;
2143 }
2144
2145 void boundbox_set_from_min_max(BoundBox *bb, float min[3], float max[3])
2146 {
2147         bb->vec[0][0]=bb->vec[1][0]=bb->vec[2][0]=bb->vec[3][0]= min[0];
2148         bb->vec[4][0]=bb->vec[5][0]=bb->vec[6][0]=bb->vec[7][0]= max[0];
2149
2150         bb->vec[0][1]=bb->vec[1][1]=bb->vec[4][1]=bb->vec[5][1]= min[1];
2151         bb->vec[2][1]=bb->vec[3][1]=bb->vec[6][1]=bb->vec[7][1]= max[1];
2152
2153         bb->vec[0][2]=bb->vec[3][2]=bb->vec[4][2]=bb->vec[7][2]= min[2];
2154         bb->vec[1][2]=bb->vec[2][2]=bb->vec[5][2]=bb->vec[6][2]= max[2];
2155 }
2156
2157 BoundBox *object_get_boundbox(Object *ob)
2158 {
2159         BoundBox *bb= NULL;
2160
2161         if(ob->type==OB_MESH) {
2162                 bb = mesh_get_bb(ob);
2163         }
2164         else if ELEM3(ob->type, OB_CURVE, OB_SURF, OB_FONT) {
2165                 bb= ( (Curve *)ob->data )->bb;
2166         }
2167         else if(ob->type==OB_MBALL) {
2168                 bb= ob->bb;
2169         }
2170         return bb;
2171 }
2172
2173 /* used to temporally disable/enable boundbox */
2174 void object_boundbox_flag(Object *ob, int flag, int set)
2175 {
2176         BoundBox *bb= object_get_boundbox(ob);
2177         if(bb) {
2178                 if(set) bb->flag |= flag;
2179                 else bb->flag &= ~flag;
2180         }
2181 }
2182
2183 void minmax_object(Object *ob, float *min, float *max)
2184 {
2185         BoundBox bb;
2186         Mesh *me;
2187         Curve *cu;
2188         float vec[3];
2189         int a;
2190
2191         switch(ob->type) {
2192
2193         case OB_CURVE:
2194         case OB_FONT:
2195         case OB_SURF:
2196                 cu= ob->data;
2197
2198                 if(cu->bb==NULL) tex_space_curve(cu);
2199                 bb= *(cu->bb);
2200
2201                 for(a=0; a<8; a++) {
2202                         Mat4MulVecfl(ob->obmat, bb.vec[a]);
2203                         DO_MINMAX(bb.vec[a], min, max);
2204                 }
2205                 break;
2206         case OB_ARMATURE:
2207                 if(ob->pose) {
2208                         bPoseChannel *pchan;
2209                         for(pchan= ob->pose->chanbase.first; pchan; pchan= pchan->next) {
2210                                 VECCOPY(vec, pchan->pose_head);
2211                                 Mat4MulVecfl(ob->obmat, vec);
2212                                 DO_MINMAX(vec, min, max);
2213                                 VECCOPY(vec, pchan->pose_tail);
2214                                 Mat4MulVecfl(ob->obmat, vec);
2215                                 DO_MINMAX(vec, min, max);
2216                         }
2217                         break;
2218                 }
2219                 /* no break, get_mesh will give NULL and it passes on to default */
2220         case OB_MESH:
2221                 me= get_mesh(ob);
2222
2223                 if(me) {
2224                         bb = *mesh_get_bb(ob);
2225
2226                         for(a=0; a<8; a++) {
2227                                 Mat4MulVecfl(ob->obmat, bb.vec[a]);
2228                                 DO_MINMAX(bb.vec[a], min, max);
2229                         }
2230                 }
2231                 if(min[0] < max[0] ) break;
2232
2233                 /* else here no break!!!, mesh can be zero sized */
2234
2235         default:
2236                 DO_MINMAX(ob->obmat[3], min, max);
2237
2238                 VECCOPY(vec, ob->obmat[3]);
2239                 VecAddf(vec, vec, ob->size);
2240                 DO_MINMAX(vec, min, max);
2241
2242                 VECCOPY(vec, ob->obmat[3]);
2243                 VecSubf(vec, vec, ob->size);
2244                 DO_MINMAX(vec, min, max);
2245                 break;
2246         }
2247 }
2248
2249 /* TODO - use dupli objects bounding boxes */
2250 void minmax_object_duplis(Object *ob, float *min, float *max)
2251 {
2252         if ((ob->transflag & OB_DUPLI)==0) {
2253                 return;
2254         } else {
2255                 ListBase *lb;
2256                 DupliObject *dob;
2257
2258                 lb= object_duplilist(G.scene, ob);
2259                 for(dob= lb->first; dob; dob= dob->next) {
2260                         if(dob->no_draw);
2261                         else {
2262                                 /* should really use bound box of dup object */
2263                                 DO_MINMAX(dob->mat[3], min, max);
2264                         }
2265                 }
2266                 free_object_duplilist(lb);      /* does restore */
2267         }
2268 }
2269
2270
2271 /* proxy rule: lib_object->proxy_from == the one we borrow from, only set temporal and cleared here */
2272 /*           local_object->proxy      == pointer to library object, saved in files and read */
2273
2274 /* function below is polluted with proxy exceptions, cleanup will follow! */
2275
2276 /* the main object update call, for object matrix, constraints, keys and displist (modifiers) */
2277 /* requires flags to be set! */
2278 void object_handle_update(Object *ob)
2279 {
2280         if(ob->recalc & OB_RECALC) {
2281
2282                 if(ob->recalc & OB_RECALC_OB) {
2283
2284                         // printf("recalcob %s\n", ob->id.name+2);
2285
2286                         /* handle proxy copy for target */
2287                         if(ob->id.lib && ob->proxy_from) {
2288                                 // printf("ob proxy copy, lib ob %s proxy %s\n", ob->id.name, ob->proxy_from->id.name);
2289                                 if(ob->proxy_from->proxy_group) {/* transform proxy into group space */
2290                                         Object *obg= ob->proxy_from->proxy_group;
2291                                         Mat4Invert(obg->imat, obg->obmat);
2292                                         Mat4MulMat4(ob->obmat, ob->proxy_from->obmat, obg->imat);
2293                                 }
2294                                 else
2295                                         Mat4CpyMat4(ob->obmat, ob->proxy_from->obmat);
2296                         }
2297                         else
2298                                 where_is_object(ob);
2299 #ifndef DISABLE_PYTHON
2300                         if (G.f & G_DOSCRIPTLINKS) BPY_do_pyscript((ID *)ob, SCRIPT_OBJECTUPDATE);
2301 #endif
2302                 }
2303
2304                 if(ob->recalc & OB_RECALC_DATA) {
2305
2306                         // printf("recalcdata %s\n", ob->id.name+2);
2307
2308                         /* includes all keys and modifiers */
2309                         if(ob->type==OB_MESH) {
2310                                 makeDerivedMesh(ob, get_viewedit_datamask());
2311                         }
2312                         else if(ob->type==OB_MBALL) {
2313                                 makeDispListMBall(ob);
2314                         }
2315                         else if(ELEM3(ob->type, OB_CURVE, OB_SURF, OB_FONT)) {
2316                                 makeDispListCurveTypes(ob, 0);
2317                         }
2318                         else if(ob->type==OB_LATTICE) {
2319                                 lattice_calc_modifiers(ob);
2320                         }
2321                         else if(ob->type==OB_CAMERA) {
2322                                 Camera *cam = (Camera *)ob->data;
2323                                 calc_ipo(cam->ipo, frame_to_float(G.scene->r.cfra));
2324                                 execute_ipo(&cam->id, cam->ipo);
2325                         }
2326                         else if(ob->type==OB_LAMP) {
2327                                 Lamp *la = (Lamp *)ob->data;
2328                                 calc_ipo(la->ipo, frame_to_float(G.scene->r.cfra));
2329                                 execute_ipo(&la->id, la->ipo);
2330                         }
2331                         else if(ob->type==OB_ARMATURE) {
2332                                 /* this happens for reading old files and to match library armatures with poses */
2333                                 if(ob->pose==NULL || (ob->pose->flag & POSE_RECALC))
2334                                         armature_rebuild_pose(ob, ob->data);
2335
2336                                 if(ob->id.lib && ob->proxy_from) {
2337                                         copy_pose_result(ob->pose, ob->proxy_from->pose);
2338                                         // printf("pose proxy copy, lib ob %s proxy %s\n", ob->id.name, ob->proxy_from->id.name);
2339                                 }
2340                                 else {
2341                                         do_all_pose_actions(ob);
2342                                         where_is_pose(ob);
2343                                 }
2344                         }
2345
2346                         if(ob->particlesystem.first) {
2347                                 ParticleSystem *tpsys, *psys;
2348                                 DerivedMesh *dm;
2349
2350                                 psys= ob->particlesystem.first;
2351                                 while(psys) {
2352                                         if(psys_check_enabled(ob, psys)) {
2353                                                 particle_system_update(ob, psys);
2354                                                 psys= psys->next;
2355                                         }
2356                                         else if(psys->flag & PSYS_DELETE) {
2357                                                 tpsys=psys->next;
2358                                                 BLI_remlink(&ob->particlesystem, psys);
2359                                                 psys_free(ob,psys);
2360                                                 psys= tpsys;
2361                                         }
2362                                         else
2363                                                 psys= psys->next;
2364                                 }
2365
2366                                 if(G.rendering && ob->transflag & OB_DUPLIPARTS) {
2367                                         /* this is to make sure we get render level duplis in groups:
2368                                          * the derivedmesh must be created before init_render_mesh,
2369                                          * since object_duplilist does dupliparticles before that */
2370                                         dm = mesh_create_derived_render(ob, CD_MASK_BAREMESH|CD_MASK_MTFACE|CD_MASK_MCOL);
2371                                         dm->release(dm);
2372
2373                                         for(psys=ob->particlesystem.first; psys; psys=psys->next)
2374                                                 psys_get_modifier(ob, psys)->flag &= ~eParticleSystemFlag_psys_updated;
2375                                 }
2376                         }
2377 #ifndef DISABLE_PYTHON
2378                         if (G.f & G_DOSCRIPTLINKS) BPY_do_pyscript((ID *)ob, SCRIPT_OBDATAUPDATE);
2379 #endif
2380                 }
2381
2382                 /* the no-group proxy case, we call update */
2383                 if(ob->proxy && ob->proxy_group==NULL) {
2384                         /* set pointer in library proxy target, for copying, but restore it */
2385                         ob->proxy->proxy_from= ob;
2386                         // printf("call update, lib ob %s proxy %s\n", ob->proxy->id.name, ob->id.name);
2387                         object_handle_update(ob->proxy);
2388                 }
2389
2390                 ob->recalc &= ~OB_RECALC;
2391         }
2392
2393         /* the case when this is a group proxy, object_update is called in group.c */
2394         if(ob->proxy) {
2395                 ob->proxy->proxy_from= ob;
2396                 // printf("set proxy pointer for later group stuff %s\n", ob->id.name);
2397         }
2398 }
2399
2400 float give_timeoffset(Object *ob) {
2401         if ((ob->ipoflag & OB_OFFS_PARENTADD) && ob->parent) {
2402                 return ob->sf + give_timeoffset(ob->parent);
2403         } else {
2404                 return ob->sf;
2405         }
2406 }
2407
2408 int give_obdata_texspace(Object *ob, int **texflag, float **loc, float **size, float **rot) {
2409
2410         if (ob->data==NULL)
2411                 return 0;
2412
2413         switch (GS(((ID *)ob->data)->name)) {
2414         case ID_ME:
2415         {
2416                 Mesh *me= ob->data;
2417                 if (texflag)    *texflag = &me->texflag;
2418                 if (loc)                *loc = me->loc;
2419                 if (size)               *size = me->size;
2420                 if (rot)                *rot = me->rot;
2421                 break;
2422         }
2423         case ID_CU:
2424         {
2425                 Curve *cu= ob->data;
2426                 if (texflag)    *texflag = &cu->texflag;
2427                 if (loc)                *loc = cu->loc;
2428                 if (size)               *size = cu->size;
2429                 if (rot)                *rot = cu->rot;
2430                 break;
2431         }
2432         case ID_MB:
2433         {
2434                 MetaBall *mb= ob->data;
2435                 if (texflag)    *texflag = &mb->texflag;
2436                 if (loc)                *loc = mb->loc;
2437                 if (size)               *size = mb->size;
2438                 if (rot)                *rot = mb->rot;
2439                 break;
2440         }
2441         default:
2442                 return 0;
2443         }
2444         return 1;
2445 }
2446
2447 /*
2448  * Test a bounding box for ray intersection
2449  * assumes the ray is already local to the boundbox space
2450  */
2451 int ray_hit_boundbox(struct BoundBox *bb, float ray_start[3], float ray_normal[3])
2452 {
2453         static int triangle_indexes[12][3] = {{0, 1, 2}, {0, 2, 3},
2454                                                                                   {3, 2, 6}, {3, 6, 7},
2455                                                                                   {1, 2, 6}, {1, 6, 5},
2456                                                                                   {5, 6, 7}, {4, 5, 7},
2457                                                                                   {0, 3, 7}, {0, 4, 7},
2458                                                                                   {0, 1, 5}, {0, 4, 5}};
2459         int result = 0;
2460         int i;
2461
2462         for (i = 0; i < 12 && result == 0; i++)
2463         {
2464                 float lambda;
2465                 int v1, v2, v3;
2466                 v1 = triangle_indexes[i][0];
2467                 v2 = triangle_indexes[i][1];
2468                 v3 = triangle_indexes[i][2];
2469                 result = RayIntersectsTriangle(ray_start, ray_normal, bb->vec[v1], bb->vec[v2], bb->vec[v3], &lambda, NULL);
2470         }
2471
2472         return result;
2473 }