source/blender/blenkernel/intern/object.c

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