synched with trunk at revision 34793
[blender.git] / 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, 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 #include "MEM_guardedalloc.h"
37
38 #include "DNA_anim_types.h"
39 #include "DNA_armature_types.h"
40 #include "DNA_camera_types.h"
41 #include "DNA_constraint_types.h"
42 #include "DNA_group_types.h"
43 #include "DNA_key_types.h"
44 #include "DNA_lamp_types.h"
45 #include "DNA_lattice_types.h"
46 #include "DNA_material_types.h"
47 #include "DNA_meta_types.h"
48 #include "DNA_meshdata_types.h"
49 #include "DNA_scene_types.h"
50 #include "DNA_screen_types.h"
51 #include "DNA_sequence_types.h"
52 #include "DNA_space_types.h"
53 #include "DNA_view3d_types.h"
54 #include "DNA_world_types.h"
55
56 #include "BLI_blenlib.h"
57 #include "BLI_editVert.h"
58 #include "BLI_math.h"
59 #include "BLI_pbvh.h"
60
61 #include "BKE_utildefines.h"
62
63 #include "BKE_main.h"
64 #include "BKE_global.h"
65
66 #include "BKE_armature.h"
67 #include "BKE_action.h"
68 #include "BKE_bullet.h"
69 #include "BKE_colortools.h"
70 #include "BKE_deform.h"
71 #include "BKE_DerivedMesh.h"
72 #include "BKE_animsys.h"
73 #include "BKE_anim.h"
74 #include "BKE_constraint.h"
75 #include "BKE_curve.h"
76 #include "BKE_displist.h"
77 #include "BKE_effect.h"
78 #include "BKE_fcurve.h"
79 #include "BKE_group.h"
80 #include "BKE_icons.h"
81 #include "BKE_key.h"
82 #include "BKE_lattice.h"
83 #include "BKE_library.h"
84 #include "BKE_mesh.h"
85 #include "BKE_mball.h"
86 #include "BKE_modifier.h"
87 #include "BKE_object.h"
88 #include "BKE_paint.h"
89 #include "BKE_particle.h"
90 #include "BKE_pointcache.h"
91 #include "BKE_property.h"
92 #include "BKE_sca.h"
93 #include "BKE_scene.h"
94 #include "BKE_sequencer.h"
95 #include "BKE_softbody.h"
96
97 #include "LBM_fluidsim.h"
98
99 #ifndef DISABLE_PYTHON
100 #include "BPY_extern.h"
101 #endif
102
103 #include "GPU_material.h"
104
105 /* Local function protos */
106 static void solve_parenting (Scene *scene, Object *ob, Object *par, float obmat[][4], float slowmat[][4], int simul);
107
108 float originmat[3][3];  /* after where_is_object(), can be used in other functions (bad!) */
109
110 void clear_workob(Object *workob)
111 {
112         memset(workob, 0, sizeof(Object));
113         
114         workob->size[0]= workob->size[1]= workob->size[2]= 1.0f;
115         workob->rotmode= ROT_MODE_EUL;
116 }
117
118 void copy_baseflags(struct Scene *scene)
119 {
120         Base *base= scene->base.first;
121         
122         while(base) {
123                 base->object->flag= base->flag;
124                 base= base->next;
125         }
126 }
127
128 void copy_objectflags(struct Scene *scene)
129 {
130         Base *base= scene->base.first;
131         
132         while(base) {
133                 base->flag= base->object->flag;
134                 base= base->next;
135         }
136 }
137
138 void update_base_layer(struct Scene *scene, Object *ob)
139 {
140         Base *base= scene->base.first;
141
142         while (base) {
143                 if (base->object == ob) base->lay= ob->lay;
144                 base= base->next;
145         }
146 }
147
148 void object_free_particlesystems(Object *ob)
149 {
150         while(ob->particlesystem.first){
151                 ParticleSystem *psys = ob->particlesystem.first;
152                 
153                 BLI_remlink(&ob->particlesystem,psys);
154                 
155                 psys_free(ob,psys);
156         }
157 }
158
159 void object_free_softbody(Object *ob)
160 {
161         if(ob->soft) {
162                 sbFree(ob->soft);
163                 ob->soft= NULL;
164         }
165 }
166
167 void object_free_bulletsoftbody(Object *ob)
168 {
169         if(ob->bsoft) {
170                 bsbFree(ob->bsoft);
171                 ob->bsoft= NULL;
172         }
173 }
174
175 void object_free_modifiers(Object *ob)
176 {
177         while (ob->modifiers.first) {
178                 ModifierData *md = ob->modifiers.first;
179                 
180                 BLI_remlink(&ob->modifiers, md);
181                 
182                 modifier_free(md);
183         }
184
185         /* particle modifiers were freed, so free the particlesystems as well */
186         object_free_particlesystems(ob);
187
188         /* same for softbody */
189         object_free_softbody(ob);
190 }
191
192 void object_link_modifiers(struct Object *ob, struct Object *from)
193 {
194         ModifierData *md;
195         object_free_modifiers(ob);
196
197         for (md=from->modifiers.first; md; md=md->next) {
198                 ModifierData *nmd = NULL;
199
200                 if(ELEM4(md->type, eModifierType_Hook, eModifierType_Softbody, eModifierType_ParticleInstance, eModifierType_Collision)) continue;
201
202                 nmd = modifier_new(md->type);
203                 modifier_copyData(md, nmd);
204                 BLI_addtail(&ob->modifiers, nmd);
205         }
206
207         copy_object_particlesystems(from, ob);
208         copy_object_softbody(from, ob);
209
210         // TODO: smoke?, cloth?
211 }
212
213 /* here we will collect all local displist stuff */
214 /* also (ab)used in depsgraph */
215 void object_free_display(Object *ob)
216 {
217         if(ob->derivedDeform) {
218                 ob->derivedDeform->needsFree = 1;
219                 ob->derivedDeform->release(ob->derivedDeform);
220                 ob->derivedDeform= NULL;
221         }
222         if(ob->derivedFinal) {
223                 ob->derivedFinal->needsFree = 1;
224                 ob->derivedFinal->release(ob->derivedFinal);
225                 ob->derivedFinal= NULL;
226         }
227         
228         freedisplist(&ob->disp);
229 }
230
231 void free_sculptsession(Object *ob)
232 {
233         if(ob && ob->sculpt) {
234                 SculptSession *ss = ob->sculpt;
235                 DerivedMesh *dm= ob->derivedFinal;
236
237                 if(ss->pbvh)
238                         BLI_pbvh_free(ss->pbvh);
239                 if(dm && dm->getPBVH)
240                         dm->getPBVH(NULL, dm); /* signal to clear */
241
242                 if(ss->texcache)
243                         MEM_freeN(ss->texcache);
244
245                 if(ss->layer_co)
246                         MEM_freeN(ss->layer_co);
247
248                 MEM_freeN(ss);
249
250                 ob->sculpt = NULL;
251         }
252 }
253
254 /* do not free object itself */
255 void free_object(Object *ob)
256 {
257         int a;
258         
259         object_free_display(ob);
260         
261         /* disconnect specific data */
262         if(ob->data) {
263                 ID *id= ob->data;
264                 id->us--;
265                 if(id->us==0) {
266                         if(ob->type==OB_MESH) unlink_mesh(ob->data);
267                         else if(ob->type==OB_CURVE) unlink_curve(ob->data);
268                         else if(ob->type==OB_MBALL) unlink_mball(ob->data);
269                 }
270                 ob->data= 0;
271         }
272         
273         for(a=0; a<ob->totcol; a++) {
274                 if(ob->mat[a]) ob->mat[a]->id.us--;
275         }
276         if(ob->mat) MEM_freeN(ob->mat);
277         if(ob->matbits) MEM_freeN(ob->matbits);
278         ob->mat= 0;
279         ob->matbits= 0;
280         if(ob->bb) MEM_freeN(ob->bb); 
281         ob->bb= 0;
282         if(ob->path) free_path(ob->path); 
283         ob->path= 0;
284         if(ob->adt) BKE_free_animdata((ID *)ob);
285         if(ob->poselib) ob->poselib->id.us--;
286         if(ob->gpd) ((ID *)ob->gpd)->us--;
287         if(ob->defbase.first)
288                 BLI_freelistN(&ob->defbase);
289         if(ob->pose)
290                 free_pose(ob->pose);
291         if(ob->mpath)
292                 animviz_free_motionpath(ob->mpath);
293         free_properties(&ob->prop);
294         object_free_modifiers(ob);
295         
296         free_sensors(&ob->sensors);
297         free_controllers(&ob->controllers);
298         free_actuators(&ob->actuators);
299         
300         free_constraints(&ob->constraints);
301         
302         free_partdeflect(ob->pd);
303
304         if(ob->soft) sbFree(ob->soft);
305         if(ob->bsoft) bsbFree(ob->bsoft);
306         if(ob->gpulamp.first) GPU_lamp_free(ob);
307
308         free_sculptsession(ob);
309
310         if(ob->pc_ids.first) BLI_freelistN(&ob->pc_ids);
311 }
312
313 static void unlink_object__unlinkModifierLinks(void *userData, Object *ob, Object **obpoin)
314 {
315         Object *unlinkOb = userData;
316
317         if (*obpoin==unlinkOb) {
318                 *obpoin = NULL;
319                 ob->recalc |= OB_RECALC_ALL; // XXX: should this just be OB_RECALC_DATA?
320         }
321 }
322
323 void unlink_object(Scene *scene, Object *ob)
324 {
325         Main *bmain= G.main;
326         Object *obt;
327         Material *mat;
328         World *wrld;
329         bScreen *sc;
330         Scene *sce;
331         Curve *cu;
332         Tex *tex;
333         Group *group;
334         Camera *camera;
335         bConstraint *con;
336         //bActionStrip *strip; // XXX animsys 
337         ModifierData *md;
338         ARegion *ar;
339         RegionView3D *rv3d;
340         int a, found;
341         
342         unlink_controllers(&ob->controllers);
343         unlink_actuators(&ob->actuators);
344         
345         /* check all objects: parents en bevels and fields, also from libraries */
346         // FIXME: need to check all animation blocks (drivers)
347         obt= bmain->object.first;
348         while(obt) {
349                 if(obt->proxy==ob)
350                         obt->proxy= NULL;
351                 if(obt->proxy_from==ob) {
352                         obt->proxy_from= NULL;
353                         obt->recalc |= OB_RECALC_OB;
354                 }
355                 if(obt->proxy_group==ob)
356                         obt->proxy_group= NULL;
357                 
358                 if(obt->parent==ob) {
359                         obt->parent= NULL;
360                         obt->recalc |= OB_RECALC_ALL;
361                 }
362                 
363                 modifiers_foreachObjectLink(obt, unlink_object__unlinkModifierLinks, ob);
364                 
365                 if ELEM(obt->type, OB_CURVE, OB_FONT) {
366                         cu= obt->data;
367
368                         if(cu->bevobj==ob) {
369                                 cu->bevobj= NULL;
370                                 obt->recalc |= OB_RECALC_ALL;
371                         }
372                         if(cu->taperobj==ob) {
373                                 cu->taperobj= NULL;
374                                 obt->recalc |= OB_RECALC_ALL;
375                         }
376                         if(cu->textoncurve==ob) {
377                                 cu->textoncurve= NULL;
378                                 obt->recalc |= OB_RECALC_ALL;
379                         }
380                 }
381                 else if(obt->type==OB_ARMATURE && obt->pose) {
382                         bPoseChannel *pchan;
383                         for(pchan= obt->pose->chanbase.first; pchan; pchan= pchan->next) {
384                                 for (con = pchan->constraints.first; con; con=con->next) {
385                                         bConstraintTypeInfo *cti= constraint_get_typeinfo(con);
386                                         ListBase targets = {NULL, NULL};
387                                         bConstraintTarget *ct;
388                                         
389                                         if (cti && cti->get_constraint_targets) {
390                                                 cti->get_constraint_targets(con, &targets);
391                                                 
392                                                 for (ct= targets.first; ct; ct= ct->next) {
393                                                         if (ct->tar == ob) {
394                                                                 ct->tar = NULL;
395                                                                 strcpy(ct->subtarget, "");
396                                                                 obt->recalc |= OB_RECALC_DATA;
397                                                         }
398                                                 }
399                                                 
400                                                 if (cti->flush_constraint_targets)
401                                                         cti->flush_constraint_targets(con, &targets, 0);
402                                         }
403                                 }
404                                 if(pchan->custom==ob)
405                                         pchan->custom= NULL;
406                         }
407                 } else if(ELEM(OB_MBALL, ob->type, obt->type)) {
408                         if(is_mball_basis_for(obt, ob))
409                                 obt->recalc|= OB_RECALC_DATA;
410                 }
411                 
412                 sca_remove_ob_poin(obt, ob);
413                 
414                 for (con = obt->constraints.first; con; con=con->next) {
415                         bConstraintTypeInfo *cti= constraint_get_typeinfo(con);
416                         ListBase targets = {NULL, NULL};
417                         bConstraintTarget *ct;
418                         
419                         if (cti && cti->get_constraint_targets) {
420                                 cti->get_constraint_targets(con, &targets);
421                                 
422                                 for (ct= targets.first; ct; ct= ct->next) {
423                                         if (ct->tar == ob) {
424                                                 ct->tar = NULL;
425                                                 strcpy(ct->subtarget, "");
426                                                 obt->recalc |= OB_RECALC_DATA;
427                                         }
428                                 }
429                                 
430                                 if (cti->flush_constraint_targets)
431                                         cti->flush_constraint_targets(con, &targets, 0);
432                         }
433                 }
434                 
435                 /* object is deflector or field */
436                 if(ob->pd) {
437                         if(obt->soft)
438                                 obt->recalc |= OB_RECALC_DATA;
439
440                         /* cloth */
441                         for(md=obt->modifiers.first; md; md=md->next)
442                                 if(md->type == eModifierType_Cloth)
443                                         obt->recalc |= OB_RECALC_DATA;
444                 }
445                 
446                 /* strips */
447 #if 0 // XXX old animation system
448                 for(strip= obt->nlastrips.first; strip; strip= strip->next) {
449                         if(strip->object==ob)
450                                 strip->object= NULL;
451                         
452                         if(strip->modifiers.first) {
453                                 bActionModifier *amod;
454                                 for(amod= strip->modifiers.first; amod; amod= amod->next)
455                                         if(amod->ob==ob)
456                                                 amod->ob= NULL;
457                         }
458                 }
459 #endif // XXX old animation system
460
461                 /* particle systems */
462                 if(obt->particlesystem.first) {
463                         ParticleSystem *tpsys= obt->particlesystem.first;
464                         for(; tpsys; tpsys=tpsys->next) {
465                                 BoidState *state = NULL;
466                                 BoidRule *rule = NULL;
467
468                                 ParticleTarget *pt = tpsys->targets.first;
469                                 for(; pt; pt=pt->next) {
470                                         if(pt->ob==ob) {
471                                                 pt->ob = NULL;
472                                                 obt->recalc |= OB_RECALC_DATA;
473                                                 break;
474                                         }
475                                 }
476
477                                 if(tpsys->target_ob==ob) {
478                                         tpsys->target_ob= NULL;
479                                         obt->recalc |= OB_RECALC_DATA;
480                                 }
481
482                                 if(tpsys->part->dup_ob==ob)
483                                         tpsys->part->dup_ob= NULL;
484
485                                 if(tpsys->part->phystype==PART_PHYS_BOIDS) {
486                                         ParticleData *pa;
487                                         BoidParticle *bpa;
488                                         int p;
489
490                                         for(p=0,pa=tpsys->particles; p<tpsys->totpart; p++,pa++) {
491                                                 bpa = pa->boid;
492                                                 if(bpa->ground == ob)
493                                                         bpa->ground = NULL;
494                                         }
495                                 }
496                                 if(tpsys->part->boids) {
497                                         for(state = tpsys->part->boids->states.first; state; state=state->next) {
498                                                 for(rule = state->rules.first; rule; rule=rule->next) {
499                                                         if(rule->type==eBoidRuleType_Avoid) {
500                                                                 BoidRuleGoalAvoid *gabr = (BoidRuleGoalAvoid*)rule;
501                                                                 if(gabr->ob==ob)
502                                                                         gabr->ob= NULL;
503                                                         }
504                                                         else if(rule->type==eBoidRuleType_FollowLeader) {
505                                                                 BoidRuleFollowLeader *flbr = (BoidRuleFollowLeader*)rule;
506                                                                 if(flbr->ob==ob)
507                                                                         flbr->ob= NULL;
508                                                         }
509                                                 }
510                                         }
511                                 }
512                         }
513                         if(ob->pd)
514                                 obt->recalc |= OB_RECALC_DATA;
515                 }
516
517                 obt= obt->id.next;
518         }
519         
520         /* materials */
521         mat= bmain->mat.first;
522         while(mat) {
523         
524                 for(a=0; a<MAX_MTEX; a++) {
525                         if(mat->mtex[a] && ob==mat->mtex[a]->object) {
526                                 /* actually, test for lib here... to do */
527                                 mat->mtex[a]->object= NULL;
528                         }
529                 }
530
531                 mat= mat->id.next;
532         }
533         
534         /* textures */
535         tex= bmain->tex.first;
536         while(tex) {
537                 if(tex->env) {
538                         if(tex->env->object == ob) tex->env->object= NULL;
539                 }
540                 tex= tex->id.next;
541         }
542
543         /* worlds */
544         wrld= bmain->world.first;
545         while(wrld) {
546                 if(wrld->id.lib==NULL) {
547                         for(a=0; a<MAX_MTEX; a++) {
548                                 if(wrld->mtex[a] && ob==wrld->mtex[a]->object)
549                                         wrld->mtex[a]->object= NULL;
550                         }
551                 }
552                 
553                 wrld= wrld->id.next;
554         }
555                 
556         /* scenes */
557         sce= bmain->scene.first;
558         while(sce) {
559                 if(sce->id.lib==NULL) {
560                         if(sce->camera==ob) sce->camera= NULL;
561                         if(sce->toolsettings->skgen_template==ob) sce->toolsettings->skgen_template = NULL;
562                         if(sce->toolsettings->particle.object==ob) sce->toolsettings->particle.object= NULL;
563
564 #ifdef DURIAN_CAMERA_SWITCH
565                         {
566                                 TimeMarker *m;
567
568                                 for (m= sce->markers.first; m; m= m->next) {
569                                         if(m->camera==ob)
570                                                 m->camera= NULL;
571                                 }
572                         }
573 #endif
574                         if(sce->ed) {
575                                 Sequence *seq;
576                                 SEQ_BEGIN(sce->ed, seq)
577                                         if(seq->scene_camera==ob) {
578                                                 seq->scene_camera= NULL;
579                                         }
580                                 SEQ_END
581                         }
582                 }
583
584                 sce= sce->id.next;
585         }
586         
587 #if 0 // XXX old animation system
588         /* ipos */
589         ipo= bmain->ipo.first;
590         while(ipo) {
591                 if(ipo->id.lib==NULL) {
592                         IpoCurve *icu;
593                         for(icu= ipo->curve.first; icu; icu= icu->next) {
594                                 if(icu->driver && icu->driver->ob==ob)
595                                         icu->driver->ob= NULL;
596                         }
597                 }
598                 ipo= ipo->id.next;
599         }
600 #endif // XXX old animation system
601         
602         /* screens */
603         sc= bmain->screen.first;
604         while(sc) {
605                 ScrArea *sa= sc->areabase.first;
606                 while(sa) {
607                         SpaceLink *sl;
608
609                         for (sl= sa->spacedata.first; sl; sl= sl->next) {
610                                 if(sl->spacetype==SPACE_VIEW3D) {
611                                         View3D *v3d= (View3D*) sl;
612
613                                         found= 0;
614                                         if(v3d->camera==ob) {
615                                                 v3d->camera= NULL;
616                                                 found= 1;
617                                         }
618                                         if(v3d->localvd && v3d->localvd->camera==ob ) {
619                                                 v3d->localvd->camera= NULL;
620                                                 found += 2;
621                                         }
622
623                                         if (found) {
624                                                 if (sa->spacetype == SPACE_VIEW3D) {
625                                                         for (ar= sa->regionbase.first; ar; ar= ar->next) {
626                                                                 if (ar->regiontype==RGN_TYPE_WINDOW) {
627                                                                         rv3d= (RegionView3D *)ar->regiondata;
628                                                                         if (found == 1 || found == 3) {
629                                                                                 if (rv3d->persp == RV3D_CAMOB)
630                                                                                         rv3d->persp= RV3D_PERSP;
631                                                                         }
632                                                                         if (found == 2 || found == 3) {
633                                                                                 if (rv3d->localvd && rv3d->localvd->persp == RV3D_CAMOB)
634                                                                                         rv3d->localvd->persp= RV3D_PERSP;
635                                                                         }
636                                                                 }
637                                                         }
638                                                 }
639                                         }
640                                 }
641                                 else if(sl->spacetype==SPACE_OUTLINER) {
642                                         SpaceOops *so= (SpaceOops *)sl;
643
644                                         if(so->treestore) {
645                                                 TreeStoreElem *tselem= so->treestore->data;
646                                                 int a;
647                                                 for(a=0; a<so->treestore->usedelem; a++, tselem++) {
648                                                         if(tselem->id==(ID *)ob) tselem->id= NULL;
649                                                 }
650                                         }
651                                 }
652                                 else if(sl->spacetype==SPACE_BUTS) {
653                                         SpaceButs *sbuts= (SpaceButs *)sl;
654
655                                         if(sbuts->pinid==(ID *)ob) {
656                                                 sbuts->flag&= ~SB_PIN_CONTEXT;
657                                                 sbuts->pinid= NULL;
658                                         }
659                                 }
660                         }
661
662                         sa= sa->next;
663                 }
664                 sc= sc->id.next;
665         }
666
667         /* groups */
668         group= bmain->group.first;
669         while(group) {
670                 rem_from_group(group, ob, NULL, NULL);
671                 group= group->id.next;
672         }
673         
674         /* cameras */
675         camera= bmain->camera.first;
676         while(camera) {
677                 if (camera->dof_ob==ob) {
678                         camera->dof_ob = NULL;
679                 }
680                 camera= camera->id.next;
681         }
682 }
683
684 int exist_object(Object *obtest)
685 {
686         Object *ob;
687         
688         if(obtest==NULL) return 0;
689         
690         ob= G.main->object.first;
691         while(ob) {
692                 if(ob==obtest) return 1;
693                 ob= ob->id.next;
694         }
695         return 0;
696 }
697
698 void *add_camera(char *name)
699 {
700         Camera *cam;
701         
702         cam=  alloc_libblock(&G.main->camera, ID_CA, name);
703
704         cam->lens= 35.0f;
705         cam->clipsta= 0.1f;
706         cam->clipend= 100.0f;
707         cam->drawsize= 0.5f;
708         cam->ortho_scale= 6.0;
709         cam->flag |= CAM_SHOWPASSEPARTOUT;
710         cam->passepartalpha = 0.5f;
711         
712         return cam;
713 }
714
715 Camera *copy_camera(Camera *cam)
716 {
717         Camera *camn;
718         
719         camn= copy_libblock(cam);
720         camn->adt= BKE_copy_animdata(cam->adt);
721         
722         return camn;
723 }
724
725
726
727 void make_local_camera(Camera *cam)
728 {
729         Main *bmain= G.main;
730         Object *ob;
731         Camera *camn;
732         int local=0, lib=0;
733
734         /* - only lib users: do nothing
735                 * - only local users: set flag
736                 * - mixed: make copy
737                 */
738         
739         if(cam->id.lib==0) return;
740         if(cam->id.us==1) {
741                 cam->id.lib= 0;
742                 cam->id.flag= LIB_LOCAL;
743                 new_id(0, (ID *)cam, 0);
744                 return;
745         }
746         
747         ob= bmain->object.first;
748         while(ob) {
749                 if(ob->data==cam) {
750                         if(ob->id.lib) lib= 1;
751                         else local= 1;
752                 }
753                 ob= ob->id.next;
754         }
755         
756         if(local && lib==0) {
757                 cam->id.lib= 0;
758                 cam->id.flag= LIB_LOCAL;
759                 new_id(0, (ID *)cam, 0);
760         }
761         else if(local && lib) {
762                 camn= copy_camera(cam);
763                 camn->id.us= 0;
764                 
765                 ob= bmain->object.first;
766                 while(ob) {
767                         if(ob->data==cam) {
768                                 
769                                 if(ob->id.lib==0) {
770                                         ob->data= camn;
771                                         camn->id.us++;
772                                         cam->id.us--;
773                                 }
774                         }
775                         ob= ob->id.next;
776                 }
777         }
778 }
779
780 /* get the camera's dof value, takes the dof object into account */
781 float dof_camera(Object *ob)
782 {
783         Camera *cam = (Camera *)ob->data; 
784         if (ob->type != OB_CAMERA)
785                 return 0.0f;
786         if (cam->dof_ob) {      
787                 /* too simple, better to return the distance on the view axis only
788                  * return len_v3v3(ob->obmat[3], cam->dof_ob->obmat[3]); */
789                 float mat[4][4], imat[4][4], obmat[4][4];
790                 
791                 copy_m4_m4(obmat, ob->obmat);
792                 normalize_m4(obmat);
793                 invert_m4_m4(imat, obmat);
794                 mul_m4_m4m4(mat, cam->dof_ob->obmat, imat);
795                 return (float)fabs(mat[3][2]);
796         }
797         return cam->YF_dofdist;
798 }
799
800 void *add_lamp(char *name)
801 {
802         Lamp *la;
803         
804         la=  alloc_libblock(&G.main->lamp, ID_LA, name);
805         
806         la->r= la->g= la->b= la->k= 1.0f;
807         la->haint= la->energy= 1.0f;
808         la->dist= 25.0f;
809         la->spotsize= 45.0f;
810         la->spotblend= 0.15f;
811         la->att2= 1.0f;
812         la->mode= LA_SHAD_BUF;
813         la->bufsize= 512;
814         la->clipsta= 0.5f;
815         la->clipend= 40.0f;
816         la->shadspotsize= 45.0f;
817         la->samp= 3;
818         la->bias= 1.0f;
819         la->soft= 3.0f;
820         la->compressthresh= 0.05f;
821         la->ray_samp= la->ray_sampy= la->ray_sampz= 1; 
822         la->area_size=la->area_sizey=la->area_sizez= 1.0f; 
823         la->buffers= 1;
824         la->buftype= LA_SHADBUF_HALFWAY;
825         la->ray_samp_method = LA_SAMP_HALTON;
826         la->adapt_thresh = 0.001f;
827         la->preview=NULL;
828         la->falloff_type = LA_FALLOFF_INVSQUARE;
829         la->curfalloff = curvemapping_add(1, 0.0f, 1.0f, 1.0f, 0.0f);
830         la->sun_effect_type = 0;
831         la->horizon_brightness = 1.0;
832         la->spread = 1.0;
833         la->sun_brightness = 1.0;
834         la->sun_size = 1.0;
835         la->backscattered_light = 1.0f;
836         la->atm_turbidity = 2.0f;
837         la->atm_inscattering_factor = 1.0f;
838         la->atm_extinction_factor = 1.0f;
839         la->atm_distance_factor = 1.0f;
840         la->sun_intensity = 1.0f;
841         la->skyblendtype= MA_RAMP_ADD;
842         la->skyblendfac= 1.0f;
843         la->sky_colorspace= BLI_XYZ_CIE;
844         la->sky_exposure= 1.0f;
845         
846         curvemapping_initialize(la->curfalloff);
847         return la;
848 }
849
850 Lamp *copy_lamp(Lamp *la)
851 {
852         Lamp *lan;
853         int a;
854         
855         lan= copy_libblock(la);
856
857         for(a=0; a<MAX_MTEX; a++) {
858                 if(lan->mtex[a]) {
859                         lan->mtex[a]= MEM_mallocN(sizeof(MTex), "copylamptex");
860                         memcpy(lan->mtex[a], la->mtex[a], sizeof(MTex));
861                         id_us_plus((ID *)lan->mtex[a]->tex);
862                 }
863         }
864         
865         lan->curfalloff = curvemapping_copy(la->curfalloff);
866         
867 #if 0 // XXX old animation system
868         id_us_plus((ID *)lan->ipo);
869 #endif // XXX old animation system
870
871         if (la->preview) lan->preview = BKE_previewimg_copy(la->preview);
872         
873         return lan;
874 }
875
876 void make_local_lamp(Lamp *la)
877 {
878         Main *bmain= G.main;
879         Object *ob;
880         Lamp *lan;
881         int local=0, lib=0;
882
883         /* - only lib users: do nothing
884                 * - only local users: set flag
885                 * - mixed: make copy
886                 */
887         
888         if(la->id.lib==0) return;
889         if(la->id.us==1) {
890                 la->id.lib= 0;
891                 la->id.flag= LIB_LOCAL;
892                 new_id(0, (ID *)la, 0);
893                 return;
894         }
895         
896         ob= bmain->object.first;
897         while(ob) {
898                 if(ob->data==la) {
899                         if(ob->id.lib) lib= 1;
900                         else local= 1;
901                 }
902                 ob= ob->id.next;
903         }
904         
905         if(local && lib==0) {
906                 la->id.lib= 0;
907                 la->id.flag= LIB_LOCAL;
908                 new_id(0, (ID *)la, 0);
909         }
910         else if(local && lib) {
911                 lan= copy_lamp(la);
912                 lan->id.us= 0;
913                 
914                 ob= bmain->object.first;
915                 while(ob) {
916                         if(ob->data==la) {
917                                 
918                                 if(ob->id.lib==0) {
919                                         ob->data= lan;
920                                         lan->id.us++;
921                                         la->id.us--;
922                                 }
923                         }
924                         ob= ob->id.next;
925                 }
926         }
927 }
928
929 void free_camera(Camera *ca)
930 {
931         BKE_free_animdata((ID *)ca);
932 }
933
934 void free_lamp(Lamp *la)
935 {
936         MTex *mtex;
937         int a;
938
939         for(a=0; a<MAX_MTEX; a++) {
940                 mtex= la->mtex[a];
941                 if(mtex && mtex->tex) mtex->tex->id.us--;
942                 if(mtex) MEM_freeN(mtex);
943         }
944         
945         BKE_free_animdata((ID *)la);
946
947         curvemapping_free(la->curfalloff);
948         
949         BKE_previewimg_free(&la->preview);
950         BKE_icon_delete(&la->id);
951         la->id.icon_id = 0;
952 }
953
954 /* *************************************************** */
955
956 static void *add_obdata_from_type(int type)
957 {
958         switch (type) {
959         case OB_MESH: return add_mesh("Mesh");
960         case OB_CURVE: return add_curve("Curve", OB_CURVE);
961         case OB_SURF: return add_curve("Surf", OB_SURF);
962         case OB_FONT: return add_curve("Text", OB_FONT);
963         case OB_MBALL: return add_mball("Meta");
964         case OB_CAMERA: return add_camera("Camera");
965         case OB_LAMP: return add_lamp("Lamp");
966         case OB_LATTICE: return add_lattice("Lattice");
967         case OB_ARMATURE: return add_armature("Armature");
968         case OB_EMPTY: return NULL;
969         default:
970                 printf("add_obdata_from_type: Internal error, bad type: %d\n", type);
971                 return NULL;
972         }
973 }
974
975 static char *get_obdata_defname(int type)
976 {
977         switch (type) {
978         case OB_MESH: return "Mesh";
979         case OB_CURVE: return "Curve";
980         case OB_SURF: return "Surf";
981         case OB_FONT: return "Text";
982         case OB_MBALL: return "Mball";
983         case OB_CAMERA: return "Camera";
984         case OB_LAMP: return "Lamp";
985         case OB_LATTICE: return "Lattice";
986         case OB_ARMATURE: return "Armature";
987         case OB_EMPTY: return "Empty";
988         default:
989                 printf("get_obdata_defname: Internal error, bad type: %d\n", type);
990                 return "Empty";
991         }
992 }
993
994 /* more general add: creates minimum required data, but without vertices etc. */
995 Object *add_only_object(int type, char *name)
996 {
997         Object *ob;
998
999         ob= alloc_libblock(&G.main->object, ID_OB, name);
1000
1001         /* default object vars */
1002         ob->type= type;
1003         
1004         ob->col[0]= ob->col[1]= ob->col[2]= 1.0;
1005         ob->col[3]= 1.0;
1006         
1007         ob->size[0]= ob->size[1]= ob->size[2]= 1.0;
1008         
1009         /* objects should default to having Euler XYZ rotations, 
1010          * but rotations default to quaternions 
1011          */
1012         ob->rotmode= ROT_MODE_EUL;
1013         /* axis-angle must not have a 0,0,0 axis, so set y-axis as default... */
1014         ob->rotAxis[1]= ob->drotAxis[1]= 1.0f;
1015         /* quaternions should be 1,0,0,0 by default.... */
1016         ob->quat[0]= ob->dquat[0]= 1.0f;
1017         /* rotation locks should be 4D for 4 component rotations by default... */
1018         ob->protectflag = OB_LOCK_ROT4D;
1019         
1020         unit_m4(ob->constinv);
1021         unit_m4(ob->parentinv);
1022         unit_m4(ob->obmat);
1023         ob->dt= OB_TEXTURE;
1024         ob->empty_drawtype= OB_ARROWS;
1025         ob->empty_drawsize= 1.0;
1026
1027         if(type==OB_CAMERA || type==OB_LAMP) {
1028                 ob->trackflag= OB_NEGZ;
1029                 ob->upflag= OB_POSY;
1030         }
1031         else {
1032                 ob->trackflag= OB_POSY;
1033                 ob->upflag= OB_POSZ;
1034         }
1035         
1036         ob->dupon= 1; ob->dupoff= 0;
1037         ob->dupsta= 1; ob->dupend= 100;
1038         ob->dupfacesca = 1.0;
1039
1040         /* Game engine defaults*/
1041         ob->mass= ob->inertia= 1.0f;
1042         ob->formfactor= 0.4f;
1043         ob->damping= 0.04f;
1044         ob->rdamping= 0.1f;
1045         ob->anisotropicFriction[0] = 1.0f;
1046         ob->anisotropicFriction[1] = 1.0f;
1047         ob->anisotropicFriction[2] = 1.0f;
1048         ob->gameflag= OB_PROP|OB_COLLISION;
1049         ob->margin = 0.0;
1050         ob->init_state=1;
1051         ob->state=1;
1052         /* ob->pad3 == Contact Processing Threshold */
1053         ob->m_contactProcessingThreshold = 1.;
1054         ob->obstacleRad = 1.;
1055         
1056         /* NT fluid sim defaults */
1057         ob->fluidsimFlag = 0;
1058         ob->fluidsimSettings = NULL;
1059
1060         ob->pc_ids.first = ob->pc_ids.last = NULL;
1061         
1062         /* Animation Visualisation defaults */
1063         animviz_settings_init(&ob->avs);
1064
1065         return ob;
1066 }
1067
1068 /* general add: to scene, with layer from area and default name */
1069 /* creates minimum required data, but without vertices etc. */
1070 Object *add_object(struct Scene *scene, int type)
1071 {
1072         Object *ob;
1073         Base *base;
1074         char name[32];
1075
1076         strcpy(name, get_obdata_defname(type));
1077         ob = add_only_object(type, name);
1078
1079         ob->data= add_obdata_from_type(type);
1080
1081         ob->lay= scene->lay;
1082         
1083         base= scene_add_base(scene, ob);
1084         scene_select_base(scene, base);
1085         ob->recalc |= OB_RECALC_ALL;
1086
1087         return ob;
1088 }
1089
1090 SoftBody *copy_softbody(SoftBody *sb)
1091 {
1092         SoftBody *sbn;
1093         
1094         if (sb==NULL) return(NULL);
1095         
1096         sbn= MEM_dupallocN(sb);
1097         sbn->totspring= sbn->totpoint= 0;
1098         sbn->bpoint= NULL;
1099         sbn->bspring= NULL;
1100         
1101         sbn->keys= NULL;
1102         sbn->totkey= sbn->totpointkey= 0;
1103         
1104         sbn->scratch= NULL;
1105
1106         sbn->pointcache= BKE_ptcache_copy_list(&sbn->ptcaches, &sb->ptcaches);
1107
1108         if(sb->effector_weights)
1109                 sbn->effector_weights = MEM_dupallocN(sb->effector_weights);
1110
1111         return sbn;
1112 }
1113
1114 BulletSoftBody *copy_bulletsoftbody(BulletSoftBody *bsb)
1115 {
1116         BulletSoftBody *bsbn;
1117
1118         if (bsb == NULL)
1119                 return NULL;
1120         bsbn = MEM_dupallocN(bsb);
1121         /* no pointer in this structure yet */
1122         return bsbn;
1123 }
1124
1125 ParticleSystem *copy_particlesystem(ParticleSystem *psys)
1126 {
1127         ParticleSystem *psysn;
1128         ParticleData *pa;
1129         int p;
1130
1131         psysn= MEM_dupallocN(psys);
1132         psysn->particles= MEM_dupallocN(psys->particles);
1133         psysn->child= MEM_dupallocN(psys->child);
1134
1135         if(psys->part->type == PART_HAIR) {
1136                 for(p=0, pa=psysn->particles; p<psysn->totpart; p++, pa++)
1137                         pa->hair = MEM_dupallocN(pa->hair);
1138         }
1139
1140         if(psysn->particles && (psysn->particles->keys || psysn->particles->boid)) {
1141                 ParticleKey *key = psysn->particles->keys;
1142                 BoidParticle *boid = psysn->particles->boid;
1143
1144                 if(key)
1145                         key = MEM_dupallocN(key);
1146                 
1147                 if(boid)
1148                         boid = MEM_dupallocN(boid);
1149                 
1150                 for(p=0, pa=psysn->particles; p<psysn->totpart; p++, pa++) {
1151                         if(boid)
1152                                 pa->boid = boid++;
1153                         if(key) {
1154                                 pa->keys = key;
1155                                 key += pa->totkey;
1156                         }
1157                 }
1158         }
1159
1160         if(psys->clmd) {
1161                 psysn->clmd = (ClothModifierData *)modifier_new(eModifierType_Cloth);
1162                 modifier_copyData((ModifierData*)psys->clmd, (ModifierData*)psysn->clmd);
1163                 psys->hair_in_dm = psys->hair_out_dm = NULL;
1164         }
1165
1166         BLI_duplicatelist(&psysn->targets, &psys->targets);
1167
1168         psysn->pathcache= NULL;
1169         psysn->childcache= NULL;
1170         psysn->edit= NULL;
1171         psysn->frand= NULL;
1172         psysn->pdd= NULL;
1173         psysn->effectors= NULL;
1174         
1175         psysn->pathcachebufs.first = psysn->pathcachebufs.last = NULL;
1176         psysn->childcachebufs.first = psysn->childcachebufs.last = NULL;
1177         psysn->renderdata = NULL;
1178         
1179         psysn->pointcache= BKE_ptcache_copy_list(&psysn->ptcaches, &psys->ptcaches);
1180
1181         /* XXX - from reading existing code this seems correct but intended usage of
1182          * pointcache should /w cloth should be added in 'ParticleSystem' - campbell */
1183         if(psysn->clmd) {
1184                 psysn->clmd->point_cache= psysn->pointcache;
1185         }
1186
1187         id_us_plus((ID *)psysn->part);
1188
1189         return psysn;
1190 }
1191
1192 void copy_object_particlesystems(Object *obn, Object *ob)
1193 {
1194         ParticleSystemModifierData *psmd;
1195         ParticleSystem *psys, *npsys;
1196         ModifierData *md;
1197
1198         obn->particlesystem.first= obn->particlesystem.last= NULL;
1199         for(psys=ob->particlesystem.first; psys; psys=psys->next) {
1200                 npsys= copy_particlesystem(psys);
1201
1202                 BLI_addtail(&obn->particlesystem, npsys);
1203
1204                 /* need to update particle modifiers too */
1205                 for(md=obn->modifiers.first; md; md=md->next) {
1206                         if(md->type==eModifierType_ParticleSystem) {
1207                                 psmd= (ParticleSystemModifierData*)md;
1208                                 if(psmd->psys==psys)
1209                                         psmd->psys= npsys;
1210                         }
1211                 }
1212         }
1213 }
1214
1215 void copy_object_softbody(Object *obn, Object *ob)
1216 {
1217         if(ob->soft)
1218                 obn->soft= copy_softbody(ob->soft);
1219 }
1220
1221 static void copy_object_pose(Object *obn, Object *ob)
1222 {
1223         bPoseChannel *chan;
1224         
1225         /* note: need to clear obn->pose pointer first, so that copy_pose works (otherwise there's a crash) */
1226         obn->pose= NULL;
1227         copy_pose(&obn->pose, ob->pose, 1);     /* 1 = copy constraints */
1228
1229         for (chan = obn->pose->chanbase.first; chan; chan=chan->next){
1230                 bConstraint *con;
1231                 
1232                 chan->flag &= ~(POSE_LOC|POSE_ROT|POSE_SIZE);
1233                 
1234                 for (con= chan->constraints.first; con; con= con->next) {
1235                         bConstraintTypeInfo *cti= constraint_get_typeinfo(con);
1236                         ListBase targets = {NULL, NULL};
1237                         bConstraintTarget *ct;
1238                         
1239 #if 0 // XXX old animation system
1240                         /* note that we can't change lib linked ipo blocks. for making
1241                          * proxies this still works correct however because the object
1242                          * is changed to object->proxy_from when evaluating the driver. */
1243                         if(con->ipo && !con->ipo->id.lib) {
1244                                 IpoCurve *icu;
1245                                 
1246                                 con->ipo= copy_ipo(con->ipo);
1247                                 
1248                                 for(icu= con->ipo->curve.first; icu; icu= icu->next) {
1249                                         if(icu->driver && icu->driver->ob==ob)
1250                                                 icu->driver->ob= obn;
1251                                 }
1252                         }
1253 #endif // XXX old animation system
1254                         
1255                         if (cti && cti->get_constraint_targets) {
1256                                 cti->get_constraint_targets(con, &targets);
1257                                 
1258                                 for (ct= targets.first; ct; ct= ct->next) {
1259                                         if (ct->tar == ob)
1260                                                 ct->tar = obn;
1261                                 }
1262                                 
1263                                 if (cti->flush_constraint_targets)
1264                                         cti->flush_constraint_targets(con, &targets, 0);
1265                         }
1266                 }
1267         }
1268 }
1269
1270 Object *copy_object(Object *ob)
1271 {
1272         Object *obn;
1273         ModifierData *md;
1274         int a;
1275
1276         obn= copy_libblock(ob);
1277         
1278         if(ob->totcol) {
1279                 obn->mat= MEM_dupallocN(ob->mat);
1280                 obn->matbits= MEM_dupallocN(ob->matbits);
1281                 obn->totcol= ob->totcol;
1282         }
1283         
1284         if(ob->bb) obn->bb= MEM_dupallocN(ob->bb);
1285         obn->path= NULL;
1286         obn->flag &= ~OB_FROMGROUP;
1287         
1288         obn->modifiers.first = obn->modifiers.last= NULL;
1289         
1290         for (md=ob->modifiers.first; md; md=md->next) {
1291                 ModifierData *nmd = modifier_new(md->type);
1292                 BLI_strncpy(nmd->name, md->name, sizeof(nmd->name));
1293                 modifier_copyData(md, nmd);
1294                 BLI_addtail(&obn->modifiers, nmd);
1295         }
1296
1297         obn->prop.first = obn->prop.last = NULL;
1298         copy_properties(&obn->prop, &ob->prop);
1299         
1300         copy_sensors(&obn->sensors, &ob->sensors);
1301         copy_controllers(&obn->controllers, &ob->controllers);
1302         copy_actuators(&obn->actuators, &ob->actuators);
1303         
1304         if(ob->pose) {
1305                 copy_object_pose(obn, ob);
1306                 /* backwards compat... non-armatures can get poses in older files? */
1307                 if(ob->type==OB_ARMATURE)
1308                         armature_rebuild_pose(obn, obn->data);
1309         }
1310         defgroup_copy_list(&obn->defbase, &ob->defbase);
1311         copy_constraints(&obn->constraints, &ob->constraints, TRUE);
1312
1313         obn->mode = 0;
1314         obn->sculpt = NULL;
1315
1316         /* increase user numbers */
1317         id_us_plus((ID *)obn->data);
1318         id_lib_extern((ID *)obn->dup_group);
1319         
1320
1321         for(a=0; a<obn->totcol; a++) id_us_plus((ID *)obn->mat[a]);
1322         
1323         obn->disp.first= obn->disp.last= NULL;
1324         
1325         if(ob->pd){
1326                 obn->pd= MEM_dupallocN(ob->pd);
1327                 if(obn->pd->tex)
1328                         id_us_plus(&(obn->pd->tex->id));
1329                 if(obn->pd->rng)
1330                         obn->pd->rng = MEM_dupallocN(ob->pd->rng);
1331         }
1332         obn->soft= copy_softbody(ob->soft);
1333         obn->bsoft = copy_bulletsoftbody(ob->bsoft);
1334
1335         copy_object_particlesystems(obn, ob);
1336         
1337         obn->derivedDeform = NULL;
1338         obn->derivedFinal = NULL;
1339
1340         obn->gpulamp.first = obn->gpulamp.last = NULL;
1341         obn->pc_ids.first = obn->pc_ids.last = NULL;
1342
1343         obn->mpath= NULL;
1344         
1345         return obn;
1346 }
1347
1348 void expand_local_object(Object *ob)
1349 {
1350         //bActionStrip *strip;
1351         ParticleSystem *psys;
1352         int a;
1353
1354 #if 0 // XXX old animation system
1355         id_lib_extern((ID *)ob->action);
1356         id_lib_extern((ID *)ob->ipo);
1357 #endif // XXX old animation system
1358         id_lib_extern((ID *)ob->data);
1359         id_lib_extern((ID *)ob->dup_group);
1360         
1361         for(a=0; a<ob->totcol; a++) {
1362                 id_lib_extern((ID *)ob->mat[a]);
1363         }
1364 #if 0 // XXX old animation system
1365         for (strip=ob->nlastrips.first; strip; strip=strip->next) {
1366                 id_lib_extern((ID *)strip->act);
1367         }
1368 #endif // XXX old animation system
1369         for(psys=ob->particlesystem.first; psys; psys=psys->next)
1370                 id_lib_extern((ID *)psys->part);
1371 }
1372
1373 void make_local_object(Object *ob)
1374 {
1375         Main *bmain= G.main;
1376         Object *obn;
1377         Scene *sce;
1378         Base *base;
1379         int local=0, lib=0;
1380
1381         /* - only lib users: do nothing
1382                 * - only local users: set flag
1383                 * - mixed: make copy
1384                 */
1385         
1386         if(ob->id.lib==NULL) return;
1387         
1388         ob->proxy= ob->proxy_from= NULL;
1389         
1390         if(ob->id.us==1) {
1391                 ob->id.lib= NULL;
1392                 ob->id.flag= LIB_LOCAL;
1393                 new_id(0, (ID *)ob, 0);
1394
1395         }
1396         else {
1397                 sce= bmain->scene.first;
1398                 while(sce) {
1399                         base= sce->base.first;
1400                         while(base) {
1401                                 if(base->object==ob) {
1402                                         if(sce->id.lib) lib++;
1403                                         else local++;
1404                                         break;
1405                                 }
1406                                 base= base->next;
1407                         }
1408                         sce= sce->id.next;
1409                 }
1410                 
1411                 if(local && lib==0) {
1412                         ob->id.lib= 0;
1413                         ob->id.flag= LIB_LOCAL;
1414                         new_id(0, (ID *)ob, 0);
1415                 }
1416                 else if(local && lib) {
1417                         obn= copy_object(ob);
1418                         obn->id.us= 0;
1419                         
1420                         sce= bmain->scene.first;
1421                         while(sce) {
1422                                 if(sce->id.lib==0) {
1423                                         base= sce->base.first;
1424                                         while(base) {
1425                                                 if(base->object==ob) {
1426                                                         base->object= obn;
1427                                                         obn->id.us++;
1428                                                         ob->id.us--;
1429                                                 }
1430                                                 base= base->next;
1431                                         }
1432                                 }
1433                                 sce= sce->id.next;
1434                         }
1435                 }
1436         }
1437         
1438         expand_local_object(ob);
1439 }
1440
1441 /*
1442  * Returns true if the Object is a from an external blend file (libdata)
1443  */
1444 int object_is_libdata(Object *ob)
1445 {
1446         if (!ob) return 0;
1447         if (ob->proxy) return 0;
1448         if (ob->id.lib) return 1;
1449         return 0;
1450 }
1451
1452 /* Returns true if the Object data is a from an external blend file (libdata) */
1453 int object_data_is_libdata(Object *ob)
1454 {
1455         if(!ob) return 0;
1456         if(ob->proxy && (ob->data==NULL || ((ID *)ob->data)->lib==NULL)) return 0;
1457         if(ob->id.lib) return 1;
1458         if(ob->data==NULL) return 0;
1459         if(((ID *)ob->data)->lib) return 1;
1460
1461         return 0;
1462 }
1463
1464 /* *************** PROXY **************** */
1465
1466 /* when you make proxy, ensure the exposed layers are extern */
1467 static void armature_set_id_extern(Object *ob)
1468 {
1469         bArmature *arm= ob->data;
1470         bPoseChannel *pchan;
1471         int lay= arm->layer_protected;
1472         
1473         for (pchan = ob->pose->chanbase.first; pchan; pchan=pchan->next) {
1474                 if(!(pchan->bone->layer & lay))
1475                         id_lib_extern((ID *)pchan->custom);
1476         }
1477                         
1478 }
1479
1480 void object_copy_proxy_drivers(Object *ob, Object *target)
1481 {
1482         if ((target->adt) && (target->adt->drivers.first)) {
1483                 FCurve *fcu;
1484                 
1485                 /* add new animdata block */
1486                 if(!ob->adt)
1487                         ob->adt= BKE_id_add_animdata(&ob->id);
1488                 
1489                 /* make a copy of all the drivers (for now), then correct any links that need fixing */
1490                 free_fcurves(&ob->adt->drivers);
1491                 copy_fcurves(&ob->adt->drivers, &target->adt->drivers);
1492                 
1493                 for (fcu= ob->adt->drivers.first; fcu; fcu= fcu->next) {
1494                         ChannelDriver *driver= fcu->driver;
1495                         DriverVar *dvar;
1496                         
1497                         for (dvar= driver->variables.first; dvar; dvar= dvar->next) {
1498                                 /* all drivers */
1499                                 DRIVER_TARGETS_LOOPER(dvar) 
1500                                 {
1501                                         if(dtar->id) {
1502                                                 if ((Object *)dtar->id == target)
1503                                                         dtar->id= (ID *)ob;
1504                                                 else {
1505                                                         /* only on local objects because this causes indirect links a -> b -> c,blend to point directly to a.blend
1506                                                          * when a.blend has a proxy thats linked into c.blend  */
1507                                                         if(ob->id.lib==NULL)
1508                                                                 id_lib_extern((ID *)dtar->id);
1509                                                 }
1510                                         }
1511                                 }
1512                                 DRIVER_TARGETS_LOOPER_END
1513                         }
1514                 }
1515         }
1516 }
1517
1518 /* proxy rule: lib_object->proxy_from == the one we borrow from, set temporally while object_update */
1519 /*             local_object->proxy == pointer to library object, saved in files and read */
1520 /*             local_object->proxy_group == pointer to group dupli-object, saved in files and read */
1521
1522 void object_make_proxy(Object *ob, Object *target, Object *gob)
1523 {
1524         /* paranoia checks */
1525         if(ob->id.lib || target->id.lib==NULL) {
1526                 printf("cannot make proxy\n");
1527                 return;
1528         }
1529         
1530         ob->proxy= target;
1531         ob->proxy_group= gob;
1532         id_lib_extern(&target->id);
1533         
1534         ob->recalc= target->recalc= OB_RECALC_ALL;
1535         
1536         /* copy transform */
1537         if(gob) {
1538                 VECCOPY(ob->loc, gob->loc);
1539                 VECCOPY(ob->rot, gob->rot);
1540                 VECCOPY(ob->size, gob->size);
1541                 
1542                 group_tag_recalc(gob->dup_group);
1543         }
1544         else {
1545                 VECCOPY(ob->loc, target->loc);
1546                 VECCOPY(ob->rot, target->rot);
1547                 VECCOPY(ob->size, target->size);
1548         }
1549         
1550         ob->parent= target->parent;     /* libdata */
1551         copy_m4_m4(ob->parentinv, target->parentinv);
1552         
1553         /* copy animdata stuff - drivers only for now... */
1554         object_copy_proxy_drivers(ob, target);
1555
1556         /* skip constraints? */
1557         // FIXME: this is considered by many as a bug
1558         
1559         /* set object type and link to data */
1560         ob->type= target->type;
1561         ob->data= target->data;
1562         id_us_plus((ID *)ob->data);             /* ensures lib data becomes LIB_EXTERN */
1563         
1564         /* copy material and index information */
1565         ob->actcol= ob->totcol= 0;
1566         if(ob->mat) MEM_freeN(ob->mat);
1567         if(ob->matbits) MEM_freeN(ob->matbits);
1568         ob->mat = NULL;
1569         ob->matbits= NULL;
1570         if ((target->totcol) && (target->mat) && ELEM5(ob->type, OB_MESH, OB_CURVE, OB_SURF, OB_FONT, OB_MBALL)) { //XXX OB_SUPPORT_MATERIAL
1571                 int i;
1572                 ob->colbits = target->colbits;
1573                 
1574                 ob->actcol= target->actcol;
1575                 ob->totcol= target->totcol;
1576                 
1577                 ob->mat = MEM_dupallocN(target->mat);
1578                 ob->matbits = MEM_dupallocN(target->matbits);
1579                 for(i=0; i<target->totcol; i++) {
1580                         /* dont need to run test_object_materials since we know this object is new and not used elsewhere */
1581                         id_us_plus((ID *)ob->mat[i]); 
1582                 }
1583         }
1584         
1585         /* type conversions */
1586         if(target->type == OB_ARMATURE) {
1587                 copy_object_pose(ob, target);   /* data copy, object pointers in constraints */
1588                 rest_pose(ob->pose);                    /* clear all transforms in channels */
1589                 armature_rebuild_pose(ob, ob->data);    /* set all internal links */
1590                 
1591                 armature_set_id_extern(ob);
1592         }
1593         
1594         /* copy drawtype info */
1595         ob->dt= target->dt;
1596 }
1597
1598
1599 /* *************** CALC ****************** */
1600
1601 /* there is also a timing calculation in drawobject() */
1602
1603 int no_speed_curve= 0;
1604
1605 void disable_speed_curve(int val)
1606 {
1607         no_speed_curve= val;
1608 }
1609
1610 // XXX THIS CRUFT NEEDS SERIOUS RECODING ASAP!
1611 /* ob can be NULL */
1612 float bsystem_time(struct Scene *scene, Object *ob, float cfra, float ofs)
1613 {
1614         /* returns float ( see BKE_curframe in scene.c) */
1615         cfra += scene->r.subframe;
1616         
1617         /* global time */
1618         if (scene)
1619                 cfra*= scene->r.framelen;       
1620         
1621 #if 0 // XXX old animation system
1622         if (ob) {
1623                 /* ofset frames */
1624                 if ((ob->ipoflag & OB_OFFS_PARENT) && (ob->partype & PARSLOW)==0) 
1625                         cfra-= give_timeoffset(ob);
1626         }
1627 #endif // XXX old animation system
1628         
1629         cfra-= ofs;
1630
1631         return cfra;
1632 }
1633
1634 void object_scale_to_mat3(Object *ob, float mat[][3])
1635 {
1636         float vec[3];
1637         add_v3_v3v3(vec, ob->size, ob->dsize);
1638         size_to_mat3( mat,vec);
1639 }
1640
1641 // TODO: this should take rotation orders into account later...
1642 void object_rot_to_mat3(Object *ob, float mat[][3])
1643 {
1644         float rmat[3][3], dmat[3][3];
1645         
1646         /* initialise the delta-rotation matrix, which will get (pre)multiplied 
1647          * with the rotation matrix to yield the appropriate rotation
1648          */
1649         unit_m3(dmat);
1650         
1651         /* rotations may either be quats, eulers (with various rotation orders), or axis-angle */
1652         if (ob->rotmode > 0) {
1653                 /* euler rotations (will cause gimble lock, but this can be alleviated a bit with rotation orders) */
1654                 eulO_to_mat3( rmat,ob->rot, ob->rotmode);
1655                 eulO_to_mat3( dmat,ob->drot, ob->rotmode);
1656         }
1657         else if (ob->rotmode == ROT_MODE_AXISANGLE) {
1658                 /* axis-angle -  not really that great for 3D-changing orientations */
1659                 axis_angle_to_mat3( rmat,ob->rotAxis, ob->rotAngle);
1660                 axis_angle_to_mat3( dmat,ob->drotAxis, ob->drotAngle);
1661         }
1662         else {
1663                 /* quats are normalised before use to eliminate scaling issues */
1664                 normalize_qt(ob->quat);
1665                 quat_to_mat3( rmat,ob->quat);
1666                 quat_to_mat3( dmat,ob->dquat);
1667         }
1668         
1669         /* combine these rotations */
1670         // XXX is this correct? if errors, change the order of multiplication...
1671         mul_m3_m3m3(mat, dmat, rmat);
1672 }
1673
1674 void object_mat3_to_rot(Object *ob, float mat[][3], int use_compat)
1675 {
1676         if (ob->rotmode == ROT_MODE_QUAT)
1677                 mat3_to_quat(ob->quat, mat);
1678         else if (ob->rotmode == ROT_MODE_AXISANGLE)
1679                 mat3_to_axis_angle(ob->rotAxis, &ob->rotAngle, mat);
1680         else {
1681                 if(use_compat) {
1682                         float eul[3];
1683                         VECCOPY(eul, ob->rot);
1684                         mat3_to_compatible_eulO(ob->rot, eul, ob->rotmode, mat);
1685                 }
1686                 else
1687                         mat3_to_eulO(ob->rot, ob->rotmode, mat);
1688         }
1689 }
1690
1691 /* see pchan_apply_mat4() for the equivalent 'pchan' function */
1692 void object_apply_mat4(Object *ob, float mat[][4])
1693 {
1694         float mat3[3][3], tmat[3][3], imat[3][3];
1695
1696         /* location */
1697         copy_v3_v3(ob->loc, mat[3]);
1698         
1699         /* rotation */
1700         copy_m3_m4(mat3, mat);
1701         object_mat3_to_rot(ob, mat3, 0);
1702         
1703         /* scale */
1704 #if 0
1705         /* works fine except for neg scales */
1706         mat4_to_size(ob->size, mat);
1707 #else
1708         /* this is more complicated but works for negative scales */
1709         object_rot_to_mat3(ob, tmat);
1710         invert_m3_m3(imat, tmat);
1711         mul_m3_m3m3(tmat, imat, mat3);
1712
1713         ob->size[0]= tmat[0][0];
1714         ob->size[1]= tmat[1][1];
1715         ob->size[2]= tmat[2][2];
1716 #endif
1717 }
1718
1719 void object_to_mat3(Object *ob, float mat[][3]) /* no parent */
1720 {
1721         float smat[3][3];
1722         float rmat[3][3];
1723         /*float q1[4];*/
1724         
1725         /* size */
1726         object_scale_to_mat3(ob, smat);
1727
1728         /* rot */
1729         object_rot_to_mat3(ob, rmat);
1730         mul_m3_m3m3(mat, rmat, smat);
1731 }
1732
1733 void object_to_mat4(Object *ob, float mat[][4])
1734 {
1735         float tmat[3][3];
1736         
1737         object_to_mat3(ob, tmat);
1738         
1739         copy_m4_m3(mat, tmat);
1740
1741         add_v3_v3v3(mat[3], ob->loc, ob->dloc);
1742 }
1743
1744 int enable_cu_speed= 1;
1745
1746 static void ob_parcurve(Scene *scene, Object *ob, Object *par, float mat[][4])
1747 {
1748         Curve *cu;
1749         float q[4], vec[4], dir[3], quat[4], radius, x1, ctime;
1750         float timeoffs = 0.0, sf_orig = 0.0;
1751         
1752         unit_m4(mat);
1753         
1754         cu= par->data;
1755         if(cu->path==NULL || cu->path->data==NULL) /* only happens on reload file, but violates depsgraph still... fix! */
1756                 makeDispListCurveTypes(scene, par, 0);
1757         if(cu->path==NULL) return;
1758         
1759         /* exception, timeoffset is regarded as distance offset */
1760         if(cu->flag & CU_OFFS_PATHDIST) {
1761                 timeoffs = give_timeoffset(ob);
1762                 SWAP(float, sf_orig, ob->sf);
1763         }
1764         
1765         /* catch exceptions: feature for nla stride editing */
1766         if(ob->ipoflag & OB_DISABLE_PATH) {
1767                 ctime= 0.0f;
1768         }
1769         /* catch exceptions: curve paths used as a duplicator */
1770         else if(enable_cu_speed) {
1771                 /* ctime is now a proper var setting of Curve which gets set by Animato like any other var that's animated,
1772                  * but this will only work if it actually is animated... 
1773                  *
1774                  * we divide the curvetime calculated in the previous step by the length of the path, to get a time
1775                  * factor, which then gets clamped to lie within 0.0 - 1.0 range
1776                  */
1777                 ctime= cu->ctime / cu->pathlen;
1778                 CLAMP(ctime, 0.0, 1.0);
1779         }
1780         else {
1781                 ctime= scene->r.cfra - give_timeoffset(ob);
1782                 ctime /= cu->pathlen;
1783                 
1784                 CLAMP(ctime, 0.0, 1.0);
1785         }
1786         
1787         /* time calculus is correct, now apply distance offset */
1788         if(cu->flag & CU_OFFS_PATHDIST) {
1789                 ctime += timeoffs/cu->path->totdist;
1790
1791                 /* restore */
1792                 SWAP(float, sf_orig, ob->sf);
1793         }
1794         
1795         
1796         /* vec: 4 items! */
1797          if( where_on_path(par, ctime, vec, dir, NULL, &radius, NULL) ) {
1798
1799                 if(cu->flag & CU_FOLLOW) {
1800                         vec_to_quat( quat,dir, ob->trackflag, ob->upflag);
1801                         
1802                         /* the tilt */
1803                         normalize_v3(dir);
1804                         q[0]= (float)cos(0.5*vec[3]);
1805                         x1= (float)sin(0.5*vec[3]);
1806                         q[1]= -x1*dir[0];
1807                         q[2]= -x1*dir[1];
1808                         q[3]= -x1*dir[2];
1809                         mul_qt_qtqt(quat, q, quat);
1810                         
1811                         quat_to_mat4( mat,quat);
1812                 }
1813                 
1814                 if(cu->flag & CU_PATH_RADIUS) {
1815                         float tmat[4][4], rmat[4][4];
1816                         scale_m4_fl(tmat, radius);
1817                         mul_m4_m4m4(rmat, mat, tmat);
1818                         copy_m4_m4(mat, rmat);
1819                 }
1820
1821                 copy_v3_v3(mat[3], vec);
1822                 
1823         }
1824 }
1825
1826 static void ob_parbone(Object *ob, Object *par, float mat[][4])
1827 {       
1828         bPoseChannel *pchan;
1829         float vec[3];
1830         
1831         if (par->type!=OB_ARMATURE) {
1832                 unit_m4(mat);
1833                 return;
1834         }
1835         
1836         /* Make sure the bone is still valid */
1837         pchan= get_pose_channel(par->pose, ob->parsubstr);
1838         if (!pchan){
1839                 printf ("Object %s with Bone parent: bone %s doesn't exist\n", ob->id.name+2, ob->parsubstr);
1840                 unit_m4(mat);
1841                 return;
1842         }
1843
1844         /* get bone transform */
1845         copy_m4_m4(mat, pchan->pose_mat);
1846
1847         /* but for backwards compatibility, the child has to move to the tail */
1848         copy_v3_v3(vec, mat[1]);
1849         mul_v3_fl(vec, pchan->bone->length);
1850         add_v3_v3(mat[3], vec);
1851 }
1852
1853 static void give_parvert(Object *par, int nr, float *vec)
1854 {
1855         EditMesh *em;
1856         int a, count;
1857         
1858         vec[0]=vec[1]=vec[2]= 0.0f;
1859         
1860         if(par->type==OB_MESH) {
1861                 Mesh *me= par->data;
1862                 DerivedMesh *dm;
1863
1864                 em = BKE_mesh_get_editmesh(me);
1865                 dm = (em)? em->derivedFinal: par->derivedFinal;
1866                         
1867                 if(dm) {
1868                         MVert *mvert= dm->getVertArray(dm);
1869                         int *index = (int *)dm->getVertDataArray(dm, CD_ORIGINDEX);
1870                         int i, count = 0, vindex, numVerts = dm->getNumVerts(dm);
1871
1872                         /* get the average of all verts with (original index == nr) */
1873                         for(i = 0; i < numVerts; i++) {
1874                                 vindex= (index)? index[i]: i;
1875
1876                                 if(vindex == nr) {
1877                                         add_v3_v3(vec, mvert[i].co);
1878                                         count++;
1879                                 }
1880                         }
1881
1882                         if (count==0) {
1883                                 /* keep as 0,0,0 */
1884                         } else if(count > 0) {
1885                                 mul_v3_fl(vec, 1.0f / count);
1886                         } else {
1887                                 /* use first index if its out of range */
1888                                 dm->getVertCo(dm, 0, vec);
1889                         }
1890                 }
1891
1892                 if(em)
1893                         BKE_mesh_end_editmesh(me, em);
1894         }
1895         else if (ELEM(par->type, OB_CURVE, OB_SURF)) {
1896                 Nurb *nu;
1897                 Curve *cu;
1898                 BPoint *bp;
1899                 BezTriple *bezt;
1900                 int found= 0;
1901                 ListBase *nurbs;
1902
1903                 cu= par->data;
1904                 nurbs= BKE_curve_nurbs(cu);
1905                 nu= nurbs->first;
1906
1907                 count= 0;
1908                 while(nu && !found) {
1909                         if(nu->type == CU_BEZIER) {
1910                                 bezt= nu->bezt;
1911                                 a= nu->pntsu;
1912                                 while(a--) {
1913                                         if(count==nr) {
1914                                                 found= 1;
1915                                                 VECCOPY(vec, bezt->vec[1]);
1916                                                 break;
1917                                         }
1918                                         count++;
1919                                         bezt++;
1920                                 }
1921                         }
1922                         else {
1923                                 bp= nu->bp;
1924                                 a= nu->pntsu*nu->pntsv;
1925                                 while(a--) {
1926                                         if(count==nr) {
1927                                                 found= 1;
1928                                                 memcpy(vec, bp->vec, sizeof(float)*3);
1929                                                 break;
1930                                         }
1931                                         count++;
1932                                         bp++;
1933                                 }
1934                         }
1935                         nu= nu->next;
1936                 }
1937
1938         }
1939         else if(par->type==OB_LATTICE) {
1940                 Lattice *latt= par->data;
1941                 BPoint *bp;
1942                 DispList *dl = find_displist(&par->disp, DL_VERTS);
1943                 float *co = dl?dl->verts:NULL;
1944                 
1945                 if(latt->editlatt) latt= latt->editlatt->latt;
1946                 
1947                 a= latt->pntsu*latt->pntsv*latt->pntsw;
1948                 count= 0;
1949                 bp= latt->def;
1950                 while(a--) {
1951                         if(count==nr) {
1952                                 if(co)
1953                                         memcpy(vec, co, 3*sizeof(float));
1954                                 else
1955                                         memcpy(vec, bp->vec, 3*sizeof(float));
1956                                 break;
1957                         }
1958                         count++;
1959                         if(co) co+= 3;
1960                         else bp++;
1961                 }
1962         }
1963 }
1964
1965 static void ob_parvert3(Object *ob, Object *par, float mat[][4])
1966 {
1967         float cmat[3][3], v1[3], v2[3], v3[3], q[4];
1968
1969         /* in local ob space */
1970         unit_m4(mat);
1971         
1972         if (ELEM4(par->type, OB_MESH, OB_SURF, OB_CURVE, OB_LATTICE)) {
1973                 
1974                 give_parvert(par, ob->par1, v1);
1975                 give_parvert(par, ob->par2, v2);
1976                 give_parvert(par, ob->par3, v3);
1977                                 
1978                 tri_to_quat( q,v1, v2, v3);
1979                 quat_to_mat3( cmat,q);
1980                 copy_m4_m3(mat, cmat);
1981                 
1982                 if(ob->type==OB_CURVE) {
1983                         VECCOPY(mat[3], v1);
1984                 }
1985                 else {
1986                         add_v3_v3v3(mat[3], v1, v2);
1987                         add_v3_v3(mat[3], v3);
1988                         mul_v3_fl(mat[3], 0.3333333f);
1989                 }
1990         }
1991 }
1992
1993 // XXX what the hell is this?
1994 static int no_parent_ipo=0;
1995 void set_no_parent_ipo(int val)
1996 {
1997         no_parent_ipo= val;
1998 }
1999
2000 void where_is_object_time(Scene *scene, Object *ob, float ctime)
2001 {
2002         float *fp1, *fp2, slowmat[4][4] = MAT4_UNITY;
2003         float stime=ctime, fac1, fac2;
2004         int a;
2005         
2006         /* new version: correct parent+vertexparent and track+parent */
2007         /* this one only calculates direct attached parent and track */
2008         /* is faster, but should keep track of timeoffs */
2009         
2010         if(ob==NULL) return;
2011         
2012         /* execute drivers only, as animation has already been done */
2013         BKE_animsys_evaluate_animdata(&ob->id, ob->adt, ctime, ADT_RECALC_DRIVERS);
2014         
2015         if(ob->parent) {
2016                 Object *par= ob->parent;
2017                 
2018                 // XXX depreceated - animsys
2019                 if(ob->ipoflag & OB_OFFS_PARENT) ctime-= give_timeoffset(ob);
2020                 
2021                 /* hurms, code below conflicts with depgraph... (ton) */
2022                 /* and even worse, it gives bad effects for NLA stride too (try ctime != par->ctime, with MBlur) */
2023                 if(no_parent_ipo==0 && stime != par->ctime) {
2024                         // only for ipo systems? 
2025                         Object tmp= *par;
2026                         
2027                         if(par->proxy_from);    // was a copied matrix, no where_is! bad...
2028                         else where_is_object_time(scene, par, ctime);
2029
2030                         solve_parenting(scene, ob, par, ob->obmat, slowmat, 0);
2031
2032                         *par= tmp;
2033                 }
2034                 else
2035                         solve_parenting(scene, ob, par, ob->obmat, slowmat, 0);
2036                 
2037                 if(ob->partype & PARSLOW) {
2038                         // include framerate
2039                         fac1= ( 1.0f / (1.0f + (float)fabs(give_timeoffset(ob))) );
2040                         if(fac1 >= 1.0f) return;
2041                         fac2= 1.0f-fac1;
2042                         
2043                         fp1= ob->obmat[0];
2044                         fp2= slowmat[0];
2045                         for(a=0; a<16; a++, fp1++, fp2++) {
2046                                 fp1[0]= fac1*fp1[0] + fac2*fp2[0];
2047                         }
2048                 }
2049         }
2050         else {
2051                 object_to_mat4(ob, ob->obmat);
2052         }
2053
2054         /* solve constraints */
2055         if (ob->constraints.first && !(ob->flag & OB_NO_CONSTRAINTS)) {
2056                 bConstraintOb *cob;
2057                 
2058                 cob= constraints_make_evalob(scene, ob, NULL, CONSTRAINT_OBTYPE_OBJECT);
2059                 
2060                 /* constraints need ctime, not stime. Some call where_is_object_time and bsystem_time */
2061                 solve_constraints (&ob->constraints, cob, ctime);
2062                 
2063                 constraints_clear_evalob(cob);
2064         }
2065         
2066         /* set negative scale flag in object */
2067         if(is_negative_m4(ob->obmat))   ob->transflag |= OB_NEG_SCALE;
2068         else                                                    ob->transflag &= ~OB_NEG_SCALE;
2069 }
2070
2071 static void solve_parenting (Scene *scene, Object *ob, Object *par, float obmat[][4], float slowmat[][4], int simul)
2072 {
2073         float totmat[4][4];
2074         float tmat[4][4];
2075         float locmat[4][4];
2076         float vec[3];
2077         int ok;
2078         
2079         object_to_mat4(ob, locmat);
2080         
2081         if(ob->partype & PARSLOW) copy_m4_m4(slowmat, obmat);
2082
2083         switch(ob->partype & PARTYPE) {
2084         case PAROBJECT:
2085                 ok= 0;
2086                 if(par->type==OB_CURVE) {
2087                         if( ((Curve *)par->data)->flag & CU_PATH ) {
2088                                 ob_parcurve(scene, ob, par, tmat);
2089                                 ok= 1;
2090                         }
2091                 }
2092                 
2093                 if(ok) mul_serie_m4(totmat, par->obmat, tmat, 
2094                         NULL, NULL, NULL, NULL, NULL, NULL);
2095                 else copy_m4_m4(totmat, par->obmat);
2096                 
2097                 break;
2098         case PARBONE:
2099                 ob_parbone(ob, par, tmat);
2100                 mul_serie_m4(totmat, par->obmat, tmat,         
2101                         NULL, NULL, NULL, NULL, NULL, NULL);
2102                 break;
2103                 
2104         case PARVERT1:
2105                 unit_m4(totmat);
2106                 if (simul){
2107                         VECCOPY(totmat[3], par->obmat[3]);
2108                 }
2109                 else{
2110                         give_parvert(par, ob->par1, vec);
2111                         mul_v3_m4v3(totmat[3], par->obmat, vec);
2112                 }
2113                 break;
2114         case PARVERT3:
2115                 ob_parvert3(ob, par, tmat);
2116                 
2117                 mul_serie_m4(totmat, par->obmat, tmat,         
2118                         NULL, NULL, NULL, NULL, NULL, NULL);
2119                 break;
2120                 
2121         case PARSKEL:
2122                 copy_m4_m4(totmat, par->obmat);
2123                 break;
2124         }
2125         
2126         // total 
2127         mul_serie_m4(tmat, totmat, ob->parentinv,         
2128                 NULL, NULL, NULL, NULL, NULL, NULL);
2129         mul_serie_m4(obmat, tmat, locmat,         
2130                 NULL, NULL, NULL, NULL, NULL, NULL);
2131         
2132         if (simul) {
2133
2134         }
2135         else{
2136                 // external usable originmat 
2137                 copy_m3_m4(originmat, tmat);
2138                 
2139                 // origin, voor help line
2140                 if( (ob->partype & 15)==PARSKEL ) {
2141                         VECCOPY(ob->orig, par->obmat[3]);
2142                 }
2143                 else {
2144                         VECCOPY(ob->orig, totmat[3]);
2145                 }
2146         }
2147
2148 }
2149
2150 void where_is_object(struct Scene *scene, Object *ob)
2151 {
2152         where_is_object_time(scene, ob, (float)scene->r.cfra);
2153 }
2154
2155
2156 void where_is_object_simul(Scene *scene, Object *ob)
2157 /* was written for the old game engine (until 2.04) */
2158 /* It seems that this function is only called
2159 for a lamp that is the child of another object */
2160 {
2161         Object *par;
2162         //Ipo *ipo;
2163         float *fp1, *fp2;
2164         float slowmat[4][4];
2165         float fac1, fac2;
2166         int a;
2167         
2168         /* NO TIMEOFFS */
2169         if(ob->parent) {
2170                 par= ob->parent;
2171                 
2172                 solve_parenting(scene, ob, par, ob->obmat, slowmat, 1);
2173
2174                 if(ob->partype & PARSLOW) {
2175
2176                         fac1= (float)(1.0/(1.0+ fabs(give_timeoffset(ob))));
2177                         fac2= 1.0f-fac1;
2178                         fp1= ob->obmat[0];
2179                         fp2= slowmat[0];
2180                         for(a=0; a<16; a++, fp1++, fp2++) {
2181                                 fp1[0]= fac1*fp1[0] + fac2*fp2[0];
2182                         }
2183                 }
2184                 
2185         }
2186         else {
2187                 object_to_mat4(ob, ob->obmat);
2188         }
2189         
2190         /* solve constraints */
2191         if (ob->constraints.first) {
2192                 bConstraintOb *cob;
2193                 
2194                 cob= constraints_make_evalob(scene, ob, NULL, CONSTRAINT_OBTYPE_OBJECT);
2195                 solve_constraints(&ob->constraints, cob, (float)scene->r.cfra);
2196                 constraints_clear_evalob(cob);
2197         }
2198 }
2199
2200 /* for calculation of the inverse parent transform, only used for editor */
2201 void what_does_parent(Scene *scene, Object *ob, Object *workob)
2202 {
2203         clear_workob(workob);
2204         
2205         unit_m4(workob->obmat);
2206         unit_m4(workob->parentinv);
2207         unit_m4(workob->constinv);
2208         workob->parent= ob->parent;
2209
2210         workob->trackflag= ob->trackflag;
2211         workob->upflag= ob->upflag;
2212         
2213         workob->partype= ob->partype;
2214         workob->par1= ob->par1;
2215         workob->par2= ob->par2;
2216         workob->par3= ob->par3;
2217
2218         workob->constraints.first = ob->constraints.first;
2219         workob->constraints.last = ob->constraints.last;
2220
2221         strcpy(workob->parsubstr, ob->parsubstr); 
2222
2223         where_is_object(scene, workob);
2224 }
2225
2226 BoundBox *unit_boundbox()
2227 {
2228         BoundBox *bb;
2229         float min[3] = {-1.0f,-1.0f,-1.0f}, max[3] = {-1.0f,-1.0f,-1.0f};
2230
2231         bb= MEM_callocN(sizeof(BoundBox), "bb");
2232         boundbox_set_from_min_max(bb, min, max);
2233         
2234         return bb;
2235 }
2236
2237 void boundbox_set_from_min_max(BoundBox *bb, float min[3], float max[3])
2238 {
2239         bb->vec[0][0]=bb->vec[1][0]=bb->vec[2][0]=bb->vec[3][0]= min[0];
2240         bb->vec[4][0]=bb->vec[5][0]=bb->vec[6][0]=bb->vec[7][0]= max[0];
2241         
2242         bb->vec[0][1]=bb->vec[1][1]=bb->vec[4][1]=bb->vec[5][1]= min[1];
2243         bb->vec[2][1]=bb->vec[3][1]=bb->vec[6][1]=bb->vec[7][1]= max[1];
2244
2245         bb->vec[0][2]=bb->vec[3][2]=bb->vec[4][2]=bb->vec[7][2]= min[2];
2246         bb->vec[1][2]=bb->vec[2][2]=bb->vec[5][2]=bb->vec[6][2]= max[2];
2247 }
2248
2249 BoundBox *object_get_boundbox(Object *ob)
2250 {
2251         BoundBox *bb= NULL;
2252         
2253         if(ob->type==OB_MESH) {
2254                 bb = mesh_get_bb(ob);
2255         }
2256         else if (ELEM3(ob->type, OB_CURVE, OB_SURF, OB_FONT)) {
2257                 bb= ob->bb ? ob->bb : ( (Curve *)ob->data )->bb;
2258         }
2259         else if(ob->type==OB_MBALL) {
2260                 bb= ob->bb;
2261         }
2262         return bb;
2263 }
2264
2265 /* used to temporally disable/enable boundbox */
2266 void object_boundbox_flag(Object *ob, int flag, int set)
2267 {
2268         BoundBox *bb= object_get_boundbox(ob);
2269         if(bb) {
2270                 if(set) bb->flag |= flag;
2271                 else bb->flag &= ~flag;
2272         }
2273 }
2274
2275 void object_get_dimensions(Object *ob, float *value)
2276 {
2277         BoundBox *bb = NULL;
2278         
2279         bb= object_get_boundbox(ob);
2280         if (bb) {
2281                 float scale[3];
2282                 
2283                 mat4_to_size( scale,ob->obmat);
2284                 
2285                 value[0] = fabs(scale[0]) * (bb->vec[4][0] - bb->vec[0][0]);
2286                 value[1] = fabs(scale[1]) * (bb->vec[2][1] - bb->vec[0][1]);
2287                 value[2] = fabs(scale[2]) * (bb->vec[1][2] - bb->vec[0][2]);
2288         } else {
2289                 value[0] = value[1] = value[2] = 0.f;
2290         }
2291 }
2292
2293 void object_set_dimensions(Object *ob, const float *value)
2294 {
2295         BoundBox *bb = NULL;
2296         
2297         bb= object_get_boundbox(ob);
2298         if (bb) {
2299                 float scale[3], len[3];
2300                 
2301                 mat4_to_size( scale,ob->obmat);
2302                 
2303                 len[0] = bb->vec[4][0] - bb->vec[0][0];
2304                 len[1] = bb->vec[2][1] - bb->vec[0][1];
2305                 len[2] = bb->vec[1][2] - bb->vec[0][2];
2306                 
2307                 if (len[0] > 0.f) ob->size[0] = value[0] / len[0];
2308                 if (len[1] > 0.f) ob->size[1] = value[1] / len[1];
2309                 if (len[2] > 0.f) ob->size[2] = value[2] / len[2];
2310         }
2311 }
2312
2313 void minmax_object(Object *ob, float *min, float *max)
2314 {
2315         BoundBox bb;
2316         Mesh *me;
2317         Curve *cu;
2318         float vec[3];
2319         int a;
2320         
2321         switch(ob->type) {
2322                 
2323         case OB_CURVE:
2324         case OB_FONT:
2325         case OB_SURF:
2326                 cu= ob->data;
2327                 
2328                 if(cu->bb==NULL) tex_space_curve(cu);
2329                 bb= *(cu->bb);
2330                 
2331                 for(a=0; a<8; a++) {
2332                         mul_m4_v3(ob->obmat, bb.vec[a]);
2333                         DO_MINMAX(bb.vec[a], min, max);
2334                 }
2335                 break;
2336         case OB_ARMATURE:
2337                 if(ob->pose) {
2338                         bPoseChannel *pchan;
2339                         for(pchan= ob->pose->chanbase.first; pchan; pchan= pchan->next) {
2340                                 mul_v3_m4v3(vec, ob->obmat, pchan->pose_head);
2341                                 DO_MINMAX(vec, min, max);
2342                                 mul_v3_m4v3(vec, ob->obmat, pchan->pose_tail);
2343                                 DO_MINMAX(vec, min, max);
2344                         }
2345                         break;
2346                 }
2347                 /* no break, get_mesh will give NULL and it passes on to default */
2348         case OB_MESH:
2349                 me= get_mesh(ob);
2350                 
2351                 if(me) {
2352                         bb = *mesh_get_bb(ob);
2353                         
2354                         for(a=0; a<8; a++) {
2355                                 mul_m4_v3(ob->obmat, bb.vec[a]);
2356                                 DO_MINMAX(bb.vec[a], min, max);
2357                         }
2358                 }
2359                 if(min[0] < max[0] ) break;
2360                 
2361                 /* else here no break!!!, mesh can be zero sized */
2362                 
2363         default:
2364                 DO_MINMAX(ob->obmat[3], min, max);
2365
2366                 copy_v3_v3(vec, ob->obmat[3]);
2367                 add_v3_v3(vec, ob->size);
2368                 DO_MINMAX(vec, min, max);
2369
2370                 copy_v3_v3(vec, ob->obmat[3]);
2371                 sub_v3_v3(vec, ob->size);
2372                 DO_MINMAX(vec, min, max);
2373                 break;
2374         }
2375 }
2376
2377 int minmax_object_duplis(Scene *scene, Object *ob, float *min, float *max)
2378 {
2379         int ok= 0;
2380         if ((ob->transflag & OB_DUPLI)==0) {
2381                 return ok;
2382         } else {
2383                 ListBase *lb;
2384                 DupliObject *dob;
2385                 
2386                 lb= object_duplilist(scene, ob);
2387                 for(dob= lb->first; dob; dob= dob->next) {
2388                         if(dob->no_draw == 0) {
2389                                 BoundBox *bb= object_get_boundbox(dob->ob);
2390
2391                                 if(bb) {
2392                                         int i;
2393                                         for(i=0; i<8; i++) {
2394                                                 float vec[3];
2395                                                 mul_v3_m4v3(vec, dob->mat, bb->vec[i]);
2396                                                 DO_MINMAX(vec, min, max);
2397                                         }
2398
2399                                         ok= 1;
2400                                 }
2401                         }
2402                 }
2403                 free_object_duplilist(lb);      /* does restore */
2404         }
2405
2406         return ok;
2407 }
2408
2409 /* copied from DNA_object_types.h */
2410 typedef struct ObTfmBack {
2411         float loc[3], dloc[3], orig[3];
2412         float size[3], dsize[3];        /* scale and delta scale */
2413         float rot[3], drot[3];          /* euler rotation */
2414         float quat[4], dquat[4];        /* quaternion rotation */
2415         float rotAxis[3], drotAxis[3];  /* axis angle rotation - axis part */
2416         float rotAngle, drotAngle;      /* axis angle rotation - angle part */
2417         float obmat[4][4];              /* final worldspace matrix with constraints & animsys applied */
2418         float parentinv[4][4]; /* inverse result of parent, so that object doesn't 'stick' to parent */
2419         float constinv[4][4]; /* inverse result of constraints. doesn't include effect of parent or object local transform */
2420         float imat[4][4];       /* inverse matrix of 'obmat' for during render, old game engine, temporally: ipokeys of transform  */
2421 } ObTfmBack;
2422
2423 void *object_tfm_backup(Object *ob)
2424 {
2425         ObTfmBack *obtfm= MEM_mallocN(sizeof(ObTfmBack), "ObTfmBack");
2426         copy_v3_v3(obtfm->loc, ob->loc);
2427         copy_v3_v3(obtfm->dloc, ob->dloc);
2428         copy_v3_v3(obtfm->orig, ob->orig);
2429         copy_v3_v3(obtfm->size, ob->size);
2430         copy_v3_v3(obtfm->dsize, ob->dsize);
2431         copy_v3_v3(obtfm->rot, ob->rot);
2432         copy_v3_v3(obtfm->drot, ob->drot);
2433         copy_qt_qt(obtfm->quat, ob->quat);
2434         copy_qt_qt(obtfm->dquat, ob->dquat);
2435         copy_v3_v3(obtfm->rotAxis, ob->rotAxis);
2436         copy_v3_v3(obtfm->drotAxis, ob->drotAxis);
2437         obtfm->rotAngle= ob->rotAngle;
2438         obtfm->drotAngle= ob->drotAngle;
2439         copy_m4_m4(obtfm->obmat, ob->obmat);
2440         copy_m4_m4(obtfm->parentinv, ob->parentinv);
2441         copy_m4_m4(obtfm->constinv, ob->constinv);
2442         copy_m4_m4(obtfm->imat, ob->imat);
2443
2444         return (void *)obtfm;
2445 }
2446
2447 void object_tfm_restore(Object *ob, void *obtfm_pt)
2448 {
2449         ObTfmBack *obtfm= (ObTfmBack *)obtfm_pt;
2450         copy_v3_v3(ob->loc, obtfm->loc);
2451         copy_v3_v3(ob->dloc, obtfm->dloc);
2452         copy_v3_v3(ob->orig, obtfm->orig);
2453         copy_v3_v3(ob->size, obtfm->size);
2454         copy_v3_v3(ob->dsize, obtfm->dsize);
2455         copy_v3_v3(ob->rot, obtfm->rot);
2456         copy_v3_v3(ob->drot, obtfm->drot);
2457         copy_qt_qt(ob->quat, obtfm->quat);
2458         copy_qt_qt(ob->dquat, obtfm->dquat);
2459         copy_v3_v3(ob->rotAxis, obtfm->rotAxis);
2460         copy_v3_v3(ob->drotAxis, obtfm->drotAxis);
2461         ob->rotAngle= obtfm->rotAngle;
2462         ob->drotAngle= obtfm->drotAngle;
2463         copy_m4_m4(ob->obmat, obtfm->obmat);
2464         copy_m4_m4(ob->parentinv, obtfm->parentinv);
2465         copy_m4_m4(ob->constinv, obtfm->constinv);
2466         copy_m4_m4(ob->imat, obtfm->imat);
2467 }
2468
2469 /* proxy rule: lib_object->proxy_from == the one we borrow from, only set temporal and cleared here */
2470 /*           local_object->proxy      == pointer to library object, saved in files and read */
2471
2472 /* function below is polluted with proxy exceptions, cleanup will follow! */
2473
2474 /* the main object update call, for object matrix, constraints, keys and displist (modifiers) */
2475 /* requires flags to be set! */
2476 void object_handle_update(Scene *scene, Object *ob)
2477 {
2478         if(ob->recalc & OB_RECALC_ALL) {
2479                 /* speed optimization for animation lookups */
2480                 if(ob->pose)
2481                         make_pose_channels_hash(ob->pose);
2482
2483                 if(ob->recalc & OB_RECALC_DATA) {
2484                         if(ob->type==OB_ARMATURE) {
2485                                 /* this happens for reading old files and to match library armatures
2486                                    with poses we do it ahead of where_is_object to ensure animation
2487                                    is evaluated on the rebuilt pose, otherwise we get incorrect poses
2488                                    on file load */
2489                                 if(ob->pose==NULL || (ob->pose->flag & POSE_RECALC))
2490                                         armature_rebuild_pose(ob, ob->data);
2491                         }
2492                 }
2493
2494                 /* XXX new animsys warning: depsgraph tag OB_RECALC_DATA should not skip drivers, 
2495                    which is only in where_is_object now */
2496                 // XXX: should this case be OB_RECALC_OB instead?
2497                 if(ob->recalc & OB_RECALC_ALL) {
2498                         
2499                         if (G.f & G_DEBUG)
2500                                 printf("recalcob %s\n", ob->id.name+2);
2501                         
2502                         /* handle proxy copy for target */
2503                         if(ob->id.lib && ob->proxy_from) {
2504                                 // printf("ob proxy copy, lib ob %s proxy %s\n", ob->id.name, ob->proxy_from->id.name);
2505                                 if(ob->proxy_from->proxy_group) {/* transform proxy into group space */
2506                                         Object *obg= ob->proxy_from->proxy_group;
2507                                         invert_m4_m4(obg->imat, obg->obmat);
2508                                         mul_m4_m4m4(ob->obmat, ob->proxy_from->obmat, obg->imat);
2509                                 }
2510                                 else
2511                                         copy_m4_m4(ob->obmat, ob->proxy_from->obmat);
2512                         }
2513                         else
2514                                 where_is_object(scene, ob);
2515                 }
2516                 
2517                 if(ob->recalc & OB_RECALC_DATA) {
2518                         ID *data_id= (ID *)ob->data;
2519                         AnimData *adt= BKE_animdata_from_id(data_id);
2520                         float ctime= (float)scene->r.cfra; // XXX this is bad...
2521                         ListBase pidlist;
2522                         PTCacheID *pid;
2523                         
2524                         if (G.f & G_DEBUG)
2525                                 printf("recalcdata %s\n", ob->id.name+2);
2526                         
2527                         /* includes all keys and modifiers */
2528                         if(ob->type==OB_MESH) {
2529                                 EditMesh *em = (ob == scene->obedit)? BKE_mesh_get_editmesh(ob->data): NULL;
2530                                 
2531                                 /* evaluate drivers */
2532                                 // XXX: should we push this to derivedmesh instead?
2533                                 BKE_animsys_evaluate_animdata(data_id, adt, ctime, ADT_RECALC_DRIVERS);
2534                                 
2535                                         // here was vieweditdatamask? XXX
2536                                 if(em) {
2537                                         makeDerivedMesh(scene, ob, em, CD_MASK_BAREMESH);
2538                                         BKE_mesh_end_editmesh(ob->data, em);
2539                                 } else
2540                                         makeDerivedMesh(scene, ob, NULL, CD_MASK_BAREMESH);
2541                         }
2542                         else if(ob->type==OB_MBALL) {
2543                                 makeDispListMBall(scene, ob);
2544                         } 
2545                         else if(ELEM3(ob->type, OB_CURVE, OB_SURF, OB_FONT)) {
2546                                 makeDispListCurveTypes(scene, ob, 0);
2547                         }
2548                         else if(ELEM(ob->type, OB_CAMERA, OB_LAMP)) {
2549                                 /* evaluate drivers */
2550                                 BKE_animsys_evaluate_animdata(data_id, adt, ctime, ADT_RECALC_DRIVERS);
2551                         }
2552                         else if(ob->type==OB_LATTICE) {
2553                                 lattice_calc_modifiers(scene, ob);
2554                         }
2555                         else if(ob->type==OB_ARMATURE) {
2556                                 /* evaluate drivers */
2557                                 BKE_animsys_evaluate_animdata(data_id, adt, ctime, ADT_RECALC_DRIVERS);
2558                                 
2559                                 if(ob->id.lib && ob->proxy_from) {
2560                                         copy_pose_result(ob->pose, ob->proxy_from->pose);
2561                                         // printf("pose proxy copy, lib ob %s proxy %s\n", ob->id.name, ob->proxy_from->id.name);
2562                                 }
2563                                 else {
2564                                         where_is_pose(scene, ob);
2565                                 }
2566                         }
2567
2568                         if(ob->particlesystem.first) {
2569                                 ParticleSystem *tpsys, *psys;
2570                                 DerivedMesh *dm;
2571                                 ob->transflag &= ~OB_DUPLIPARTS;
2572                                 
2573                                 psys= ob->particlesystem.first;
2574                                 while(psys) {
2575                                         if(psys_check_enabled(ob, psys)) {
2576                                                 /* check use of dupli objects here */
2577                                                 if(psys->part && (psys->part->draw_as == PART_DRAW_REND || G.rendering) &&
2578                                                         ((psys->part->ren_as == PART_DRAW_OB && psys->part->dup_ob)
2579                                                         || (psys->part->ren_as == PART_DRAW_GR && psys->part->dup_group)))
2580                                                         ob->transflag |= OB_DUPLIPARTS;
2581
2582                                                 particle_system_update(scene, ob, psys);
2583                                                 psys= psys->next;
2584                                         }
2585                                         else if(psys->flag & PSYS_DELETE) {
2586                                                 tpsys=psys->next;
2587                                                 BLI_remlink(&ob->particlesystem, psys);
2588                                                 psys_free(ob,psys);
2589                                                 psys= tpsys;
2590                                         }
2591                                         else
2592                                                 psys= psys->next;
2593                                 }
2594
2595                                 if(G.rendering && ob->transflag & OB_DUPLIPARTS) {
2596                                         /* this is to make sure we get render level duplis in groups:
2597                                          * the derivedmesh must be created before init_render_mesh,
2598                                          * since object_duplilist does dupliparticles before that */
2599                                         dm = mesh_create_derived_render(scene, ob, CD_MASK_BAREMESH|CD_MASK_MTFACE|CD_MASK_MCOL);
2600                                         dm->release(dm);
2601
2602                                         for(psys=ob->particlesystem.first; psys; psys=psys->next)
2603                                                 psys_get_modifier(ob, psys)->flag &= ~eParticleSystemFlag_psys_updated;
2604                                 }
2605                         }
2606
2607                         /* check if quick cache is needed */
2608                         BKE_ptcache_ids_from_object(&pidlist, ob, scene, MAX_DUPLI_RECUR);
2609
2610                         for(pid=pidlist.first; pid; pid=pid->next) {
2611                                 if((pid->cache->flag & PTCACHE_BAKED)
2612                                         || (pid->cache->flag & PTCACHE_QUICK_CACHE)==0)
2613                                         continue;
2614
2615                                 if(pid->cache->flag & PTCACHE_OUTDATED || (pid->cache->flag & PTCACHE_SIMULATION_VALID)==0) {
2616                                         scene->physics_settings.quick_cache_step =
2617                                                 scene->physics_settings.quick_cache_step ?
2618                                                 MIN2(scene->physics_settings.quick_cache_step, pid->cache->step) :
2619                                                 pid->cache->step;
2620                                 }
2621                         }
2622
2623                         BLI_freelistN(&pidlist);
2624                 }
2625
2626                 /* the no-group proxy case, we call update */
2627                 if(ob->proxy && ob->proxy_group==NULL) {
2628                         /* set pointer in library proxy target, for copying, but restore it */
2629                         ob->proxy->proxy_from= ob;
2630                         // printf("call update, lib ob %s proxy %s\n", ob->proxy->id.name, ob->id.name);
2631                         object_handle_update(scene, ob->proxy);
2632                 }
2633         
2634                 ob->recalc &= ~OB_RECALC_ALL;
2635         }
2636
2637         /* the case when this is a group proxy, object_update is called in group.c */
2638         if(ob->proxy) {
2639                 ob->proxy->proxy_from= ob;
2640                 // printf("set proxy pointer for later group stuff %s\n", ob->id.name);
2641         }
2642 }
2643
2644 float give_timeoffset(Object *ob) {
2645         if ((ob->ipoflag & OB_OFFS_PARENTADD) && ob->parent) {
2646                 return ob->sf + give_timeoffset(ob->parent);
2647         } else {
2648                 return ob->sf;
2649         }
2650 }
2651
2652 int give_obdata_texspace(Object *ob, short **texflag, float **loc, float **size, float **rot) {
2653         
2654         if (ob->data==NULL)
2655                 return 0;
2656         
2657         switch (GS(((ID *)ob->data)->name)) {
2658         case ID_ME:
2659         {
2660                 Mesh *me= ob->data;
2661                 if (texflag)    *texflag = &me->texflag;
2662                 if (loc)                *loc = me->loc;
2663                 if (size)               *size = me->size;
2664                 if (rot)                *rot = me->rot;
2665                 break;
2666         }
2667         case ID_CU:
2668         {
2669                 Curve *cu= ob->data;
2670                 if (texflag)    *texflag = &cu->texflag;
2671                 if (loc)                *loc = cu->loc;
2672                 if (size)               *size = cu->size;
2673                 if (rot)                *rot = cu->rot;
2674                 break;
2675         }
2676         case ID_MB:
2677         {
2678                 MetaBall *mb= ob->data;
2679                 if (texflag)    *texflag = &mb->texflag;
2680                 if (loc)                *loc = mb->loc;
2681                 if (size)               *size = mb->size;
2682                 if (rot)                *rot = mb->rot;
2683                 break;
2684         }
2685         default:
2686                 return 0;
2687         }
2688         return 1;
2689 }
2690
2691 /*
2692  * Test a bounding box for ray intersection
2693  * assumes the ray is already local to the boundbox space
2694  */
2695 int ray_hit_boundbox(struct BoundBox *bb, float ray_start[3], float ray_normal[3])
2696 {
2697         static int triangle_indexes[12][3] = {{0, 1, 2}, {0, 2, 3},
2698                                                                                   {3, 2, 6}, {3, 6, 7},
2699                                                                                   {1, 2, 6}, {1, 6, 5}, 
2700                                                                                   {5, 6, 7}, {4, 5, 7},
2701                                                                                   {0, 3, 7}, {0, 4, 7},
2702                                                                                   {0, 1, 5}, {0, 4, 5}};
2703         int result = 0;
2704         int i;
2705         
2706         for (i = 0; i < 12 && result == 0; i++)
2707         {
2708                 float lambda;
2709                 int v1, v2, v3;
2710                 v1 = triangle_indexes[i][0];
2711                 v2 = triangle_indexes[i][1];
2712                 v3 = triangle_indexes[i][2];
2713                 result = isect_ray_tri_v3(ray_start, ray_normal, bb->vec[v1], bb->vec[v2], bb->vec[v3], &lambda, NULL);
2714         }
2715         
2716         return result;
2717 }
2718
2719 static int pc_cmp(void *a, void *b)
2720 {
2721         LinkData *ad = a, *bd = b;
2722         if(GET_INT_FROM_POINTER(ad->data) > GET_INT_FROM_POINTER(bd->data))
2723                 return 1;
2724         else return 0;
2725 }
2726
2727 int object_insert_ptcache(Object *ob) 
2728 {
2729         LinkData *link = NULL;
2730         int i = 0;
2731
2732         BLI_sortlist(&ob->pc_ids, pc_cmp);
2733
2734         for(link=ob->pc_ids.first, i = 0; link; link=link->next, i++) 
2735         {
2736                 int index = GET_INT_FROM_POINTER(link->data);
2737
2738                 if(i < index)
2739                         break;
2740         }
2741
2742         link = MEM_callocN(sizeof(LinkData), "PCLink");
2743         link->data = SET_INT_IN_POINTER(i);
2744         BLI_addtail(&ob->pc_ids, link);
2745
2746         return i;
2747 }
2748
2749 /* 'lens' may be set for envmap only */
2750 void object_camera_matrix(
2751                 RenderData *rd, Object *camera, int winx, int winy, short field_second,
2752                 float winmat[][4], rctf *viewplane, float *clipsta, float *clipend, float *lens, float *ycor,
2753                 float *viewdx, float *viewdy
2754 ) {
2755         Camera *cam=NULL;
2756         float pixsize;
2757         float shiftx=0.0, shifty=0.0, winside, viewfac;
2758
2759         rd->mode &= ~(R_ORTHO|R_PANORAMA);
2760
2761         /* question mark */
2762         (*ycor)= rd->yasp / rd->xasp;
2763         if(rd->mode & R_FIELDS)
2764                 (*ycor) *= 2.0f;
2765
2766         if(camera->type==OB_CAMERA) {
2767                 cam= camera->data;
2768
2769                 if(cam->type==CAM_ORTHO) rd->mode |= R_ORTHO;
2770                 if(cam->flag & CAM_PANORAMA) rd->mode |= R_PANORAMA;
2771
2772                 /* solve this too... all time depending stuff is in convertblender.c?
2773                  * Need to update the camera early because it's used for projection matrices
2774                  * and other stuff BEFORE the animation update loop is done
2775                  * */
2776 #if 0 // XXX old animation system
2777                 if(cam->ipo) {
2778                         calc_ipo(cam->ipo, frame_to_float(re->scene, re->r.cfra));
2779                         execute_ipo(&cam->id, cam->ipo);
2780                 }
2781 #endif // XXX old animation system
2782                 shiftx=cam->shiftx;
2783                 shifty=cam->shifty;
2784                 (*lens)= cam->lens;
2785                 (*clipsta)= cam->clipsta;
2786                 (*clipend)= cam->clipend;
2787         }
2788         else if(camera->type==OB_LAMP) {
2789                 Lamp *la= camera->data;
2790                 float fac= cos( M_PI*la->spotsize/360.0 );
2791                 float phi= acos(fac);
2792
2793                 (*lens)= 16.0*fac/sin(phi);
2794                 if((*lens)==0.0f)
2795                         (*lens)= 35.0;
2796                 (*clipsta)= la->clipsta;
2797                 (*clipend)= la->clipend;
2798         }
2799         else {  /* envmap exception... */;
2800                 if((*lens)==0.0f)
2801                         (*lens)= 16.0;
2802
2803                 if((*clipsta)==0.0f || (*clipend)==0.0f) {
2804                         (*clipsta)= 0.1f;
2805                         (*clipend)= 1000.0f;
2806                 }
2807         }
2808
2809         /* ortho only with camera available */
2810         if(cam && rd->mode & R_ORTHO) {
2811                 if(rd->xasp*winx >= rd->yasp*winy) {
2812                         viewfac= winx;
2813                 }
2814                 else {
2815                         viewfac= (*ycor) * winy;
2816                 }
2817                 /* ortho_scale == 1.0 means exact 1 to 1 mapping */
2818                 pixsize= cam->ortho_scale/viewfac;
2819         }
2820         else {
2821                 if(rd->xasp*winx >= rd->yasp*winy)      viewfac= ((*lens) * winx)/32.0;
2822                 else                                                            viewfac= (*ycor) * ((*lens) * winy)/32.0;
2823                 pixsize= (*clipsta) / viewfac;
2824         }
2825
2826         /* viewplane fully centered, zbuffer fills in jittered between -.5 and +.5 */
2827         winside= MAX2(winx, winy);
2828         viewplane->xmin= -0.5f*(float)winx + shiftx*winside;
2829         viewplane->ymin= -0.5f*(*ycor)*(float)winy + shifty*winside;
2830         viewplane->xmax=  0.5f*(float)winx + shiftx*winside;
2831         viewplane->ymax=  0.5f*(*ycor)*(float)winy + shifty*winside;
2832
2833         if(field_second) {
2834                 if(rd->mode & R_ODDFIELD) {
2835                         viewplane->ymin-= 0.5 * (*ycor);
2836                         viewplane->ymax-= 0.5 * (*ycor);
2837                 }
2838                 else {
2839                         viewplane->ymin+= 0.5 * (*ycor);
2840                         viewplane->ymax+= 0.5 * (*ycor);
2841                 }
2842         }
2843         /* the window matrix is used for clipping, and not changed during OSA steps */
2844         /* using an offset of +0.5 here would give clip errors on edges */
2845         viewplane->xmin *= pixsize;
2846         viewplane->xmax *= pixsize;
2847         viewplane->ymin *= pixsize;
2848         viewplane->ymax *= pixsize;
2849
2850         (*viewdx)= pixsize;
2851         (*viewdy)= (*ycor) * pixsize;
2852
2853         if(rd->mode & R_ORTHO)
2854                 orthographic_m4(winmat, viewplane->xmin, viewplane->xmax, viewplane->ymin, viewplane->ymax, *clipsta, *clipend);
2855         else
2856                 perspective_m4(winmat, viewplane->xmin, viewplane->xmax, viewplane->ymin, viewplane->ymax, *clipsta, *clipend);
2857
2858 }
2859
2860 #if 0
2861 static int pc_findindex(ListBase *listbase, int index)
2862 {
2863         LinkData *link= NULL;
2864         int number= 0;
2865         
2866         if (listbase == NULL) return -1;
2867         
2868         link= listbase->first;
2869         while (link) {
2870                 if ((int)link->data == index)
2871                         return number;
2872                 
2873                 number++;
2874                 link= link->next;
2875         }
2876         
2877         return -1;
2878 }
2879
2880 void object_delete_ptcache(Object *ob, int index) 
2881 {
2882         int list_index = pc_findindex(&ob->pc_ids, index);
2883         LinkData *link = BLI_findlink(&ob->pc_ids, list_index);
2884         BLI_freelinkN(&ob->pc_ids, link);
2885 }
2886 #endif
2887
2888 /* shape key utility function */
2889
2890 /************************* Mesh ************************/
2891 static KeyBlock *insert_meshkey(Scene *scene, Object *ob, char *name, int from_mix)
2892 {
2893         Mesh *me= ob->data;
2894         Key *key= me->key;
2895         KeyBlock *kb;
2896         int newkey= 0;
2897
2898         if(key == NULL) {
2899                 key= me->key= add_key((ID *)me);
2900                 key->type= KEY_RELATIVE;
2901                 newkey= 1;
2902         }
2903
2904         if(newkey || from_mix==FALSE) {
2905                 /* create from mesh */
2906                 kb= add_keyblock(key, name);
2907                 mesh_to_key(me, kb);
2908         }
2909         else {
2910                 /* copy from current values */
2911                 float *data= do_ob_key(scene, ob);
2912
2913                 /* create new block with prepared data */
2914                 kb= add_keyblock(key, name);
2915                 kb->data= data;
2916                 kb->totelem= me->totvert;
2917         }
2918
2919         return kb;
2920 }
2921 /************************* Lattice ************************/
2922 static KeyBlock *insert_lattkey(Scene *scene, Object *ob, char *name, int from_mix)
2923 {
2924         Lattice *lt= ob->data;
2925         Key *key= lt->key;
2926         KeyBlock *kb;
2927         int newkey= 0;
2928
2929         if(key==NULL) {
2930                 key= lt->key= add_key( (ID *)lt);
2931                 key->type= KEY_RELATIVE;
2932                 newkey= 1;
2933         }
2934
2935         if(newkey || from_mix==FALSE) {
2936                 kb= add_keyblock(key, name);
2937
2938                 /* create from lattice */
2939                 latt_to_key(lt, kb);
2940         }
2941         else {
2942                 /* copy from current values */
2943                 float *data= do_ob_key(scene, ob);
2944
2945                 /* create new block with prepared data */
2946                 kb= add_keyblock(key, name);
2947                 kb->totelem= lt->pntsu*lt->pntsv*lt->pntsw;
2948                 kb->data= data;
2949         }
2950
2951         return kb;
2952 }
2953 /************************* Curve ************************/
2954 static KeyBlock *insert_curvekey(Scene *scene, Object *ob, char *name, int from_mix)
2955 {
2956         Curve *cu= ob->data;
2957         Key *key= cu->key;
2958         KeyBlock *kb;
2959         ListBase *lb= BKE_curve_nurbs(cu);
2960         int newkey= 0;
2961
2962         if(key==NULL) {
2963                 key= cu->key= add_key( (ID *)cu);
2964                 key->type = KEY_RELATIVE;
2965                 newkey= 1;
2966         }
2967
2968         if(newkey || from_mix==FALSE) {
2969                 /* create from curve */
2970                 kb= add_keyblock(key, name);
2971                 if (!newkey) {
2972                         KeyBlock *basekb= (KeyBlock *)key->block.first;
2973                         kb->data= MEM_dupallocN(basekb->data);
2974                         kb->totelem= basekb->totelem;
2975                 } else curve_to_key(cu, kb, lb);
2976         }
2977         else {
2978                 /* copy from current values */
2979                 float *data= do_ob_key(scene, ob);
2980
2981                 /* create new block with prepared data */
2982                 kb= add_keyblock(key, name);
2983                 kb->totelem= count_curveverts(lb);
2984                 kb->data= data;
2985         }
2986
2987         return kb;
2988 }
2989
2990 KeyBlock *object_insert_shape_key(Scene *scene, Object *ob, char *name, int from_mix)
2991 {
2992         if(ob->type==OB_MESH)                                    return insert_meshkey(scene, ob, name, from_mix);
2993         else if ELEM(ob->type, OB_CURVE, OB_SURF)return insert_curvekey(scene, ob, name, from_mix);
2994         else if(ob->type==OB_LATTICE)                    return insert_lattkey(scene, ob, name, from_mix);
2995         else                                                                     return NULL;
2996 }
2997