synched with trunk at revision 30243
[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->dup_group) ob->dup_group->id.us--;
287         if(ob->gpd) ob->gpd->id.us--;
288         if(ob->defbase.first)
289                 BLI_freelistN(&ob->defbase);
290         if(ob->pose)
291                 free_pose(ob->pose);
292         if(ob->mpath)
293                 animviz_free_motionpath(ob->mpath);
294         free_properties(&ob->prop);
295         object_free_modifiers(ob);
296         
297         free_sensors(&ob->sensors);
298         free_controllers(&ob->controllers);
299         free_actuators(&ob->actuators);
300         
301         free_constraints(&ob->constraints);
302         
303         free_partdeflect(ob->pd);
304
305         if(ob->soft) sbFree(ob->soft);
306         if(ob->bsoft) bsbFree(ob->bsoft);
307         if(ob->gpulamp.first) GPU_lamp_free(ob);
308
309         free_sculptsession(ob);
310
311         if(ob->pc_ids.first) BLI_freelistN(&ob->pc_ids);
312 }
313
314 static void unlink_object__unlinkModifierLinks(void *userData, Object *ob, Object **obpoin)
315 {
316         Object *unlinkOb = userData;
317
318         if (*obpoin==unlinkOb) {
319                 *obpoin = NULL;
320                 ob->recalc |= OB_RECALC_ALL; // XXX: should this just be OB_RECALC_DATA?
321         }
322 }
323
324 void unlink_object(Scene *scene, Object *ob)
325 {
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= G.main->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= G.main->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= G.main->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= G.main->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= G.main->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= G.main->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= G.main->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= G.main->group.first;
669         while(group) {
670                 rem_from_group(group, ob, NULL, NULL);
671                 group= group->id.next;
672         }
673         
674         /* cameras */
675         camera= G.main->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         Object *ob;
730         Camera *camn;
731         int local=0, lib=0;
732
733         /* - only lib users: do nothing
734                 * - only local users: set flag
735                 * - mixed: make copy
736                 */
737         
738         if(cam->id.lib==0) return;
739         if(cam->id.us==1) {
740                 cam->id.lib= 0;
741                 cam->id.flag= LIB_LOCAL;
742                 new_id(0, (ID *)cam, 0);
743                 return;
744         }
745         
746         ob= G.main->object.first;
747         while(ob) {
748                 if(ob->data==cam) {
749                         if(ob->id.lib) lib= 1;
750                         else local= 1;
751                 }
752                 ob= ob->id.next;
753         }
754         
755         if(local && lib==0) {
756                 cam->id.lib= 0;
757                 cam->id.flag= LIB_LOCAL;
758                 new_id(0, (ID *)cam, 0);
759         }
760         else if(local && lib) {
761                 camn= copy_camera(cam);
762                 camn->id.us= 0;
763                 
764                 ob= G.main->object.first;
765                 while(ob) {
766                         if(ob->data==cam) {
767                                 
768                                 if(ob->id.lib==0) {
769                                         ob->data= camn;
770                                         camn->id.us++;
771                                         cam->id.us--;
772                                 }
773                         }
774                         ob= ob->id.next;
775                 }
776         }
777 }
778
779 /* get the camera's dof value, takes the dof object into account */
780 float dof_camera(Object *ob)
781 {
782         Camera *cam = (Camera *)ob->data; 
783         if (ob->type != OB_CAMERA)
784                 return 0.0f;
785         if (cam->dof_ob) {      
786                 /* too simple, better to return the distance on the view axis only
787                  * return len_v3v3(ob->obmat[3], cam->dof_ob->obmat[3]); */
788                 float mat[4][4], imat[4][4], obmat[4][4];
789                 
790                 copy_m4_m4(obmat, ob->obmat);
791                 normalize_m4(obmat);
792                 invert_m4_m4(imat, obmat);
793                 mul_m4_m4m4(mat, cam->dof_ob->obmat, imat);
794                 return (float)fabs(mat[3][2]);
795         }
796         return cam->YF_dofdist;
797 }
798
799 void *add_lamp(char *name)
800 {
801         Lamp *la;
802         
803         la=  alloc_libblock(&G.main->lamp, ID_LA, name);
804         
805         la->r= la->g= la->b= la->k= 1.0f;
806         la->haint= la->energy= 1.0f;
807         la->dist= 25.0f;
808         la->spotsize= 45.0f;
809         la->spotblend= 0.15f;
810         la->att2= 1.0f;
811         la->mode= LA_SHAD_BUF;
812         la->bufsize= 512;
813         la->clipsta= 0.5f;
814         la->clipend= 40.0f;
815         la->shadspotsize= 45.0f;
816         la->samp= 3;
817         la->bias= 1.0f;
818         la->soft= 3.0f;
819         la->compressthresh= 0.05f;
820         la->ray_samp= la->ray_sampy= la->ray_sampz= 1; 
821         la->area_size=la->area_sizey=la->area_sizez= 1.0f; 
822         la->buffers= 1;
823         la->buftype= LA_SHADBUF_HALFWAY;
824         la->ray_samp_method = LA_SAMP_HALTON;
825         la->adapt_thresh = 0.001f;
826         la->preview=NULL;
827         la->falloff_type = LA_FALLOFF_INVSQUARE;
828         la->curfalloff = curvemapping_add(1, 0.0f, 1.0f, 1.0f, 0.0f);
829         la->sun_effect_type = 0;
830         la->horizon_brightness = 1.0;
831         la->spread = 1.0;
832         la->sun_brightness = 1.0;
833         la->sun_size = 1.0;
834         la->backscattered_light = 1.0f;
835         la->atm_turbidity = 2.0f;
836         la->atm_inscattering_factor = 1.0f;
837         la->atm_extinction_factor = 1.0f;
838         la->atm_distance_factor = 1.0f;
839         la->sun_intensity = 1.0f;
840         la->skyblendtype= MA_RAMP_ADD;
841         la->skyblendfac= 1.0f;
842         la->sky_colorspace= BLI_XYZ_CIE;
843         la->sky_exposure= 1.0f;
844         
845         curvemapping_initialize(la->curfalloff);
846         return la;
847 }
848
849 Lamp *copy_lamp(Lamp *la)
850 {
851         Lamp *lan;
852         int a;
853         
854         lan= copy_libblock(la);
855
856         for(a=0; a<MAX_MTEX; a++) {
857                 if(lan->mtex[a]) {
858                         lan->mtex[a]= MEM_mallocN(sizeof(MTex), "copylamptex");
859                         memcpy(lan->mtex[a], la->mtex[a], sizeof(MTex));
860                         id_us_plus((ID *)lan->mtex[a]->tex);
861                 }
862         }
863         
864         lan->curfalloff = curvemapping_copy(la->curfalloff);
865         
866 #if 0 // XXX old animation system
867         id_us_plus((ID *)lan->ipo);
868 #endif // XXX old animation system
869
870         if (la->preview) lan->preview = BKE_previewimg_copy(la->preview);
871         
872         return lan;
873 }
874
875 void make_local_lamp(Lamp *la)
876 {
877         Object *ob;
878         Lamp *lan;
879         int local=0, lib=0;
880
881         /* - only lib users: do nothing
882                 * - only local users: set flag
883                 * - mixed: make copy
884                 */
885         
886         if(la->id.lib==0) return;
887         if(la->id.us==1) {
888                 la->id.lib= 0;
889                 la->id.flag= LIB_LOCAL;
890                 new_id(0, (ID *)la, 0);
891                 return;
892         }
893         
894         ob= G.main->object.first;
895         while(ob) {
896                 if(ob->data==la) {
897                         if(ob->id.lib) lib= 1;
898                         else local= 1;
899                 }
900                 ob= ob->id.next;
901         }
902         
903         if(local && lib==0) {
904                 la->id.lib= 0;
905                 la->id.flag= LIB_LOCAL;
906                 new_id(0, (ID *)la, 0);
907         }
908         else if(local && lib) {
909                 lan= copy_lamp(la);
910                 lan->id.us= 0;
911                 
912                 ob= G.main->object.first;
913                 while(ob) {
914                         if(ob->data==la) {
915                                 
916                                 if(ob->id.lib==0) {
917                                         ob->data= lan;
918                                         lan->id.us++;
919                                         la->id.us--;
920                                 }
921                         }
922                         ob= ob->id.next;
923                 }
924         }
925 }
926
927 void free_camera(Camera *ca)
928 {
929         BKE_free_animdata((ID *)ca);
930 }
931
932 void free_lamp(Lamp *la)
933 {
934         MTex *mtex;
935         int a;
936
937         for(a=0; a<MAX_MTEX; a++) {
938                 mtex= la->mtex[a];
939                 if(mtex && mtex->tex) mtex->tex->id.us--;
940                 if(mtex) MEM_freeN(mtex);
941         }
942         
943         BKE_free_animdata((ID *)la);
944
945         curvemapping_free(la->curfalloff);
946         
947         BKE_previewimg_free(&la->preview);
948         BKE_icon_delete(&la->id);
949         la->id.icon_id = 0;
950 }
951
952 void *add_wave()
953 {
954         return 0;
955 }
956
957
958 /* *************************************************** */
959
960 static void *add_obdata_from_type(int type)
961 {
962         switch (type) {
963         case OB_MESH: return add_mesh("Mesh");
964         case OB_CURVE: return add_curve("Curve", OB_CURVE);
965         case OB_SURF: return add_curve("Surf", OB_SURF);
966         case OB_FONT: return add_curve("Text", OB_FONT);
967         case OB_MBALL: return add_mball("Meta");
968         case OB_CAMERA: return add_camera("Camera");
969         case OB_LAMP: return add_lamp("Lamp");
970         case OB_LATTICE: return add_lattice("Lattice");
971         case OB_WAVE: return add_wave();
972         case OB_ARMATURE: return add_armature("Armature");
973         case OB_EMPTY: return NULL;
974         default:
975                 printf("add_obdata_from_type: Internal error, bad type: %d\n", type);
976                 return NULL;
977         }
978 }
979
980 static char *get_obdata_defname(int type)
981 {
982         switch (type) {
983         case OB_MESH: return "Mesh";
984         case OB_CURVE: return "Curve";
985         case OB_SURF: return "Surf";
986         case OB_FONT: return "Text";
987         case OB_MBALL: return "Mball";
988         case OB_CAMERA: return "Camera";
989         case OB_LAMP: return "Lamp";
990         case OB_LATTICE: return "Lattice";
991         case OB_WAVE: return "Wave";
992         case OB_ARMATURE: return "Armature";
993         case OB_EMPTY: return "Empty";
994         default:
995                 printf("get_obdata_defname: Internal error, bad type: %d\n", type);
996                 return "Empty";
997         }
998 }
999
1000 /* more general add: creates minimum required data, but without vertices etc. */
1001 Object *add_only_object(int type, char *name)
1002 {
1003         Object *ob;
1004
1005         ob= alloc_libblock(&G.main->object, ID_OB, name);
1006
1007         /* default object vars */
1008         ob->type= type;
1009         
1010         ob->col[0]= ob->col[1]= ob->col[2]= 1.0;
1011         ob->col[3]= 1.0;
1012         
1013         ob->size[0]= ob->size[1]= ob->size[2]= 1.0;
1014         
1015         /* objects should default to having Euler XYZ rotations, 
1016          * but rotations default to quaternions 
1017          */
1018         ob->rotmode= ROT_MODE_EUL;
1019         /* axis-angle must not have a 0,0,0 axis, so set y-axis as default... */
1020         ob->rotAxis[1]= ob->drotAxis[1]= 1.0f;
1021         /* quaternions should be 1,0,0,0 by default.... */
1022         ob->quat[0]= ob->dquat[0]= 1.0f;
1023         /* rotation locks should be 4D for 4 component rotations by default... */
1024         ob->protectflag = OB_LOCK_ROT4D;
1025         
1026         unit_m4(ob->constinv);
1027         unit_m4(ob->parentinv);
1028         unit_m4(ob->obmat);
1029         ob->dt= OB_TEXTURE;
1030         ob->empty_drawtype= OB_ARROWS;
1031         ob->empty_drawsize= 1.0;
1032
1033         if(type==OB_CAMERA || type==OB_LAMP) {
1034                 ob->trackflag= OB_NEGZ;
1035                 ob->upflag= OB_POSY;
1036         }
1037         else {
1038                 ob->trackflag= OB_POSY;
1039                 ob->upflag= OB_POSZ;
1040         }
1041         
1042         ob->dupon= 1; ob->dupoff= 0;
1043         ob->dupsta= 1; ob->dupend= 100;
1044         ob->dupfacesca = 1.0;
1045
1046         /* Game engine defaults*/
1047         ob->mass= ob->inertia= 1.0f;
1048         ob->formfactor= 0.4f;
1049         ob->damping= 0.04f;
1050         ob->rdamping= 0.1f;
1051         ob->anisotropicFriction[0] = 1.0f;
1052         ob->anisotropicFriction[1] = 1.0f;
1053         ob->anisotropicFriction[2] = 1.0f;
1054         ob->gameflag= OB_PROP|OB_COLLISION;
1055         ob->margin = 0.0;
1056         ob->init_state=1;
1057         ob->state=1;
1058         /* ob->pad3 == Contact Processing Threshold */
1059         ob->m_contactProcessingThreshold = 1.;
1060         ob->obstacleRad = 1.;
1061         
1062         /* NT fluid sim defaults */
1063         ob->fluidsimFlag = 0;
1064         ob->fluidsimSettings = NULL;
1065
1066         ob->pc_ids.first = ob->pc_ids.last = NULL;
1067         
1068         /* Animation Visualisation defaults */
1069         animviz_settings_init(&ob->avs);
1070
1071         return ob;
1072 }
1073
1074 /* general add: to scene, with layer from area and default name */
1075 /* creates minimum required data, but without vertices etc. */
1076 Object *add_object(struct Scene *scene, int type)
1077 {
1078         Object *ob;
1079         Base *base;
1080         char name[32];
1081
1082         strcpy(name, get_obdata_defname(type));
1083         ob = add_only_object(type, name);
1084
1085         ob->data= add_obdata_from_type(type);
1086
1087         ob->lay= scene->lay;
1088         
1089         base= scene_add_base(scene, ob);
1090         scene_select_base(scene, base);
1091         ob->recalc |= OB_RECALC_ALL;
1092
1093         return ob;
1094 }
1095
1096 SoftBody *copy_softbody(SoftBody *sb)
1097 {
1098         SoftBody *sbn;
1099         
1100         if (sb==NULL) return(NULL);
1101         
1102         sbn= MEM_dupallocN(sb);
1103         sbn->totspring= sbn->totpoint= 0;
1104         sbn->bpoint= NULL;
1105         sbn->bspring= NULL;
1106         
1107         sbn->keys= NULL;
1108         sbn->totkey= sbn->totpointkey= 0;
1109         
1110         sbn->scratch= NULL;
1111
1112         sbn->pointcache= BKE_ptcache_copy_list(&sbn->ptcaches, &sb->ptcaches);
1113
1114         if(sb->effector_weights)
1115                 sbn->effector_weights = MEM_dupallocN(sb->effector_weights);
1116
1117         return sbn;
1118 }
1119
1120 BulletSoftBody *copy_bulletsoftbody(BulletSoftBody *bsb)
1121 {
1122         BulletSoftBody *bsbn;
1123
1124         if (bsb == NULL)
1125                 return NULL;
1126         bsbn = MEM_dupallocN(bsb);
1127         /* no pointer in this structure yet */
1128         return bsbn;
1129 }
1130
1131 ParticleSystem *copy_particlesystem(ParticleSystem *psys)
1132 {
1133         ParticleSystem *psysn;
1134         ParticleData *pa;
1135         int p;
1136
1137         psysn= MEM_dupallocN(psys);
1138         psysn->particles= MEM_dupallocN(psys->particles);
1139         psysn->child= MEM_dupallocN(psys->child);
1140
1141         if(psys->part->type == PART_HAIR) {
1142                 for(p=0, pa=psysn->particles; p<psysn->totpart; p++, pa++)
1143                         pa->hair = MEM_dupallocN(pa->hair);
1144         }
1145
1146         if(psysn->particles && (psysn->particles->keys || psysn->particles->boid)) {
1147                 ParticleKey *key = psysn->particles->keys;
1148                 BoidParticle *boid = psysn->particles->boid;
1149
1150                 if(key)
1151                         key = MEM_dupallocN(key);
1152                 
1153                 if(boid)
1154                         boid = MEM_dupallocN(boid);
1155                 
1156                 for(p=0, pa=psysn->particles; p<psysn->totpart; p++, pa++) {
1157                         if(boid)
1158                                 pa->boid = boid++;
1159                         if(key) {
1160                                 pa->keys = key;
1161                                 key += pa->totkey;
1162                         }
1163                 }
1164         }
1165
1166         if(psys->clmd) {
1167                 psysn->clmd = (ClothModifierData *)modifier_new(eModifierType_Cloth);
1168                 modifier_copyData((ModifierData*)psys->clmd, (ModifierData*)psysn->clmd);
1169                 psys->hair_in_dm = psys->hair_out_dm = NULL;
1170         }
1171
1172         BLI_duplicatelist(&psysn->targets, &psys->targets);
1173
1174         psysn->pathcache= NULL;
1175         psysn->childcache= NULL;
1176         psysn->edit= NULL;
1177         psysn->frand= NULL;
1178         psysn->pdd= NULL;
1179         psysn->effectors= NULL;
1180         
1181         psysn->pathcachebufs.first = psysn->pathcachebufs.last = NULL;
1182         psysn->childcachebufs.first = psysn->childcachebufs.last = NULL;
1183         psysn->renderdata = NULL;
1184         
1185         psysn->pointcache= BKE_ptcache_copy_list(&psysn->ptcaches, &psys->ptcaches);
1186
1187         /* XXX - from reading existing code this seems correct but intended usage of
1188          * pointcache should /w cloth should be added in 'ParticleSystem' - campbell */
1189         if(psysn->clmd) {
1190                 psysn->clmd->point_cache= psysn->pointcache;
1191         }
1192
1193         id_us_plus((ID *)psysn->part);
1194
1195         return psysn;
1196 }
1197
1198 void copy_object_particlesystems(Object *obn, Object *ob)
1199 {
1200         ParticleSystemModifierData *psmd;
1201         ParticleSystem *psys, *npsys;
1202         ModifierData *md;
1203
1204         obn->particlesystem.first= obn->particlesystem.last= NULL;
1205         for(psys=ob->particlesystem.first; psys; psys=psys->next) {
1206                 npsys= copy_particlesystem(psys);
1207
1208                 BLI_addtail(&obn->particlesystem, npsys);
1209
1210                 /* need to update particle modifiers too */
1211                 for(md=obn->modifiers.first; md; md=md->next) {
1212                         if(md->type==eModifierType_ParticleSystem) {
1213                                 psmd= (ParticleSystemModifierData*)md;
1214                                 if(psmd->psys==psys)
1215                                         psmd->psys= npsys;
1216                         }
1217                 }
1218         }
1219 }
1220
1221 void copy_object_softbody(Object *obn, Object *ob)
1222 {
1223         if(ob->soft)
1224                 obn->soft= copy_softbody(ob->soft);
1225 }
1226
1227 static void copy_object_pose(Object *obn, Object *ob)
1228 {
1229         bPoseChannel *chan;
1230         
1231         /* note: need to clear obn->pose pointer first, so that copy_pose works (otherwise there's a crash) */
1232         obn->pose= NULL;
1233         copy_pose(&obn->pose, ob->pose, 1);     /* 1 = copy constraints */
1234
1235         for (chan = obn->pose->chanbase.first; chan; chan=chan->next){
1236                 bConstraint *con;
1237                 
1238                 chan->flag &= ~(POSE_LOC|POSE_ROT|POSE_SIZE);
1239                 
1240                 for (con= chan->constraints.first; con; con= con->next) {
1241                         bConstraintTypeInfo *cti= constraint_get_typeinfo(con);
1242                         ListBase targets = {NULL, NULL};
1243                         bConstraintTarget *ct;
1244                         
1245 #if 0 // XXX old animation system
1246                         /* note that we can't change lib linked ipo blocks. for making
1247                          * proxies this still works correct however because the object
1248                          * is changed to object->proxy_from when evaluating the driver. */
1249                         if(con->ipo && !con->ipo->id.lib) {
1250                                 IpoCurve *icu;
1251                                 
1252                                 con->ipo= copy_ipo(con->ipo);
1253                                 
1254                                 for(icu= con->ipo->curve.first; icu; icu= icu->next) {
1255                                         if(icu->driver && icu->driver->ob==ob)
1256                                                 icu->driver->ob= obn;
1257                                 }
1258                         }
1259 #endif // XXX old animation system
1260                         
1261                         if (cti && cti->get_constraint_targets) {
1262                                 cti->get_constraint_targets(con, &targets);
1263                                 
1264                                 for (ct= targets.first; ct; ct= ct->next) {
1265                                         if (ct->tar == ob)
1266                                                 ct->tar = obn;
1267                                 }
1268                                 
1269                                 if (cti->flush_constraint_targets)
1270                                         cti->flush_constraint_targets(con, &targets, 0);
1271                         }
1272                 }
1273         }
1274 }
1275
1276 Object *copy_object(Object *ob)
1277 {
1278         Object *obn;
1279         ModifierData *md;
1280         int a;
1281
1282         obn= copy_libblock(ob);
1283         
1284         if(ob->totcol) {
1285                 obn->mat= MEM_dupallocN(ob->mat);
1286                 obn->matbits= MEM_dupallocN(ob->matbits);
1287                 obn->totcol= ob->totcol;
1288         }
1289         
1290         if(ob->bb) obn->bb= MEM_dupallocN(ob->bb);
1291         obn->path= NULL;
1292         obn->flag &= ~OB_FROMGROUP;
1293         
1294         obn->modifiers.first = obn->modifiers.last= NULL;
1295         
1296         for (md=ob->modifiers.first; md; md=md->next) {
1297                 ModifierData *nmd = modifier_new(md->type);
1298                 BLI_strncpy(nmd->name, md->name, sizeof(nmd->name));
1299                 modifier_copyData(md, nmd);
1300                 BLI_addtail(&obn->modifiers, nmd);
1301         }
1302
1303         obn->prop.first = obn->prop.last = NULL;
1304         copy_properties(&obn->prop, &ob->prop);
1305         
1306         copy_sensors(&obn->sensors, &ob->sensors);
1307         copy_controllers(&obn->controllers, &ob->controllers);
1308         copy_actuators(&obn->actuators, &ob->actuators);
1309         
1310         if(ob->pose) {
1311                 copy_object_pose(obn, ob);
1312                 /* backwards compat... non-armatures can get poses in older files? */
1313                 if(ob->type==OB_ARMATURE)
1314                         armature_rebuild_pose(obn, obn->data);
1315         }
1316         defgroup_copy_list(&obn->defbase, &ob->defbase);
1317         copy_constraints(&obn->constraints, &ob->constraints, TRUE);
1318
1319         obn->mode = 0;
1320         obn->sculpt = NULL;
1321
1322         /* increase user numbers */
1323         id_us_plus((ID *)obn->data);
1324         id_us_plus((ID *)obn->dup_group);
1325         
1326
1327         for(a=0; a<obn->totcol; a++) id_us_plus((ID *)obn->mat[a]);
1328         
1329         obn->disp.first= obn->disp.last= NULL;
1330         
1331         if(ob->pd){
1332                 obn->pd= MEM_dupallocN(ob->pd);
1333                 if(obn->pd->tex)
1334                         id_us_plus(&(obn->pd->tex->id));
1335                 if(obn->pd->rng)
1336                         obn->pd->rng = MEM_dupallocN(ob->pd->rng);
1337         }
1338         obn->soft= copy_softbody(ob->soft);
1339         obn->bsoft = copy_bulletsoftbody(ob->bsoft);
1340
1341         copy_object_particlesystems(obn, ob);
1342         
1343         obn->derivedDeform = NULL;
1344         obn->derivedFinal = NULL;
1345
1346         obn->gpulamp.first = obn->gpulamp.last = NULL;
1347         obn->pc_ids.first = obn->pc_ids.last = NULL;
1348         
1349         return obn;
1350 }
1351
1352 void expand_local_object(Object *ob)
1353 {
1354         //bActionStrip *strip;
1355         ParticleSystem *psys;
1356         int a;
1357
1358 #if 0 // XXX old animation system
1359         id_lib_extern((ID *)ob->action);
1360         id_lib_extern((ID *)ob->ipo);
1361 #endif // XXX old animation system
1362         id_lib_extern((ID *)ob->data);
1363         id_lib_extern((ID *)ob->dup_group);
1364         
1365         for(a=0; a<ob->totcol; a++) {
1366                 id_lib_extern((ID *)ob->mat[a]);
1367         }
1368 #if 0 // XXX old animation system
1369         for (strip=ob->nlastrips.first; strip; strip=strip->next) {
1370                 id_lib_extern((ID *)strip->act);
1371         }
1372 #endif // XXX old animation system
1373         for(psys=ob->particlesystem.first; psys; psys=psys->next)
1374                 id_lib_extern((ID *)psys->part);
1375 }
1376
1377 void make_local_object(Object *ob)
1378 {
1379         Object *obn;
1380         Scene *sce;
1381         Base *base;
1382         int local=0, lib=0;
1383
1384         /* - only lib users: do nothing
1385                 * - only local users: set flag
1386                 * - mixed: make copy
1387                 */
1388         
1389         if(ob->id.lib==NULL) return;
1390         
1391         ob->proxy= ob->proxy_from= NULL;
1392         
1393         if(ob->id.us==1) {
1394                 ob->id.lib= NULL;
1395                 ob->id.flag= LIB_LOCAL;
1396                 new_id(0, (ID *)ob, 0);
1397
1398         }
1399         else {
1400                 sce= G.main->scene.first;
1401                 while(sce) {
1402                         base= sce->base.first;
1403                         while(base) {
1404                                 if(base->object==ob) {
1405                                         if(sce->id.lib) lib++;
1406                                         else local++;
1407                                         break;
1408                                 }
1409                                 base= base->next;
1410                         }
1411                         sce= sce->id.next;
1412                 }
1413                 
1414                 if(local && lib==0) {
1415                         ob->id.lib= 0;
1416                         ob->id.flag= LIB_LOCAL;
1417                         new_id(0, (ID *)ob, 0);
1418                 }
1419                 else if(local && lib) {
1420                         obn= copy_object(ob);
1421                         obn->id.us= 0;
1422                         
1423                         sce= G.main->scene.first;
1424                         while(sce) {
1425                                 if(sce->id.lib==0) {
1426                                         base= sce->base.first;
1427                                         while(base) {
1428                                                 if(base->object==ob) {
1429                                                         base->object= obn;
1430                                                         obn->id.us++;
1431                                                         ob->id.us--;
1432                                                 }
1433                                                 base= base->next;
1434                                         }
1435                                 }
1436                                 sce= sce->id.next;
1437                         }
1438                 }
1439         }
1440         
1441         expand_local_object(ob);
1442 }
1443
1444 /*
1445  * Returns true if the Object is a from an external blend file (libdata)
1446  */
1447 int object_is_libdata(Object *ob)
1448 {
1449         if (!ob) return 0;
1450         if (ob->proxy) return 0;
1451         if (ob->id.lib) return 1;
1452         return 0;
1453 }
1454
1455 /* Returns true if the Object data is a from an external blend file (libdata) */
1456 int object_data_is_libdata(Object *ob)
1457 {
1458         if(!ob) return 0;
1459         if(ob->proxy && (ob->data==NULL || ((ID *)ob->data)->lib==NULL)) return 0;
1460         if(ob->id.lib) return 1;
1461         if(ob->data==NULL) return 0;
1462         if(((ID *)ob->data)->lib) return 1;
1463
1464         return 0;
1465 }
1466
1467 /* *************** PROXY **************** */
1468
1469 /* when you make proxy, ensure the exposed layers are extern */
1470 static void armature_set_id_extern(Object *ob)
1471 {
1472         bArmature *arm= ob->data;
1473         bPoseChannel *pchan;
1474         int lay= arm->layer_protected;
1475         
1476         for (pchan = ob->pose->chanbase.first; pchan; pchan=pchan->next) {
1477                 if(!(pchan->bone->layer & lay))
1478                         id_lib_extern((ID *)pchan->custom);
1479         }
1480                         
1481 }
1482
1483 void object_copy_proxy_drivers(Object *ob, Object *target)
1484 {
1485         if ((target->adt) && (target->adt->drivers.first)) {
1486                 FCurve *fcu;
1487                 
1488                 /* add new animdata block */
1489                 if(!ob->adt)
1490                         ob->adt= BKE_id_add_animdata(&ob->id);
1491                 
1492                 /* make a copy of all the drivers (for now), then correct any links that need fixing */
1493                 free_fcurves(&ob->adt->drivers);
1494                 copy_fcurves(&ob->adt->drivers, &target->adt->drivers);
1495                 
1496                 for (fcu= ob->adt->drivers.first; fcu; fcu= fcu->next) {
1497                         ChannelDriver *driver= fcu->driver;
1498                         DriverVar *dvar;
1499                         
1500                         for (dvar= driver->variables.first; dvar; dvar= dvar->next) {
1501                                 /* all drivers */
1502                                 DRIVER_TARGETS_LOOPER(dvar) 
1503                                 {
1504                                         if(dtar->id) {
1505                                                 if ((Object *)dtar->id == target)
1506                                                         dtar->id= (ID *)ob;
1507                                                 else {
1508                                                         /* only on local objects because this causes indirect links a -> b -> c,blend to point directly to a.blend
1509                                                          * when a.blend has a proxy thats linked into c.blend  */
1510                                                         if(ob->id.lib==NULL)
1511                                                                 id_lib_extern((ID *)dtar->id);
1512                                                 }
1513                                         }
1514                                 }
1515                                 DRIVER_TARGETS_LOOPER_END
1516                         }
1517                 }
1518         }
1519 }
1520
1521 /* proxy rule: lib_object->proxy_from == the one we borrow from, set temporally while object_update */
1522 /*             local_object->proxy == pointer to library object, saved in files and read */
1523 /*             local_object->proxy_group == pointer to group dupli-object, saved in files and read */
1524
1525 void object_make_proxy(Object *ob, Object *target, Object *gob)
1526 {
1527         /* paranoia checks */
1528         if(ob->id.lib || target->id.lib==NULL) {
1529                 printf("cannot make proxy\n");
1530                 return;
1531         }
1532         
1533         ob->proxy= target;
1534         ob->proxy_group= gob;
1535         id_lib_extern(&target->id);
1536         
1537         ob->recalc= target->recalc= OB_RECALC_ALL;
1538         
1539         /* copy transform */
1540         if(gob) {
1541                 VECCOPY(ob->loc, gob->loc);
1542                 VECCOPY(ob->rot, gob->rot);
1543                 VECCOPY(ob->size, gob->size);
1544                 
1545                 group_tag_recalc(gob->dup_group);
1546         }
1547         else {
1548                 VECCOPY(ob->loc, target->loc);
1549                 VECCOPY(ob->rot, target->rot);
1550                 VECCOPY(ob->size, target->size);
1551         }
1552         
1553         ob->parent= target->parent;     /* libdata */
1554         copy_m4_m4(ob->parentinv, target->parentinv);
1555         
1556         /* copy animdata stuff - drivers only for now... */
1557         object_copy_proxy_drivers(ob, target);
1558
1559         /* skip constraints? */
1560         // FIXME: this is considered by many as a bug
1561         
1562         /* set object type and link to data */
1563         ob->type= target->type;
1564         ob->data= target->data;
1565         id_us_plus((ID *)ob->data);             /* ensures lib data becomes LIB_EXTERN */
1566         
1567         /* copy material and index information */
1568         ob->actcol= ob->totcol= 0;
1569         if(ob->mat) MEM_freeN(ob->mat);
1570         if(ob->matbits) MEM_freeN(ob->matbits);
1571         ob->mat = NULL;
1572         ob->matbits= NULL;
1573         if ((target->totcol) && (target->mat) && ELEM5(ob->type, OB_MESH, OB_CURVE, OB_SURF, OB_FONT, OB_MBALL)) { //XXX OB_SUPPORT_MATERIAL
1574                 int i;
1575                 ob->colbits = target->colbits;
1576                 
1577                 ob->actcol= target->actcol;
1578                 ob->totcol= target->totcol;
1579                 
1580                 ob->mat = MEM_dupallocN(target->mat);
1581                 ob->matbits = MEM_dupallocN(target->matbits);
1582                 for(i=0; i<target->totcol; i++) {
1583                         /* dont need to run test_object_materials since we know this object is new and not used elsewhere */
1584                         id_us_plus((ID *)ob->mat[i]); 
1585                 }
1586         }
1587         
1588         /* type conversions */
1589         if(target->type == OB_ARMATURE) {
1590                 copy_object_pose(ob, target);   /* data copy, object pointers in constraints */
1591                 rest_pose(ob->pose);                    /* clear all transforms in channels */
1592                 armature_rebuild_pose(ob, ob->data);    /* set all internal links */
1593                 
1594                 armature_set_id_extern(ob);
1595         }
1596         
1597         /* copy drawtype info */
1598         ob->dt= target->dt;
1599 }
1600
1601
1602 /* *************** CALC ****************** */
1603
1604 /* there is also a timing calculation in drawobject() */
1605
1606 int no_speed_curve= 0;
1607
1608 void disable_speed_curve(int val)
1609 {
1610         no_speed_curve= val;
1611 }
1612
1613 // XXX THIS CRUFT NEEDS SERIOUS RECODING ASAP!
1614 /* ob can be NULL */
1615 float bsystem_time(struct Scene *scene, Object *ob, float cfra, float ofs)
1616 {
1617         /* returns float ( see BKE_curframe in scene.c) */
1618         cfra += scene->r.subframe;
1619         
1620         /* global time */
1621         if (scene)
1622                 cfra*= scene->r.framelen;       
1623         
1624 #if 0 // XXX old animation system
1625         if (ob) {
1626                 /* ofset frames */
1627                 if ((ob->ipoflag & OB_OFFS_PARENT) && (ob->partype & PARSLOW)==0) 
1628                         cfra-= give_timeoffset(ob);
1629         }
1630 #endif // XXX old animation system
1631         
1632         cfra-= ofs;
1633
1634         return cfra;
1635 }
1636
1637 void object_scale_to_mat3(Object *ob, float mat[][3])
1638 {
1639         float vec[3];
1640         
1641         vec[0]= ob->size[0]+ob->dsize[0];
1642         vec[1]= ob->size[1]+ob->dsize[1];
1643         vec[2]= ob->size[2]+ob->dsize[2];
1644         size_to_mat3( mat,vec);
1645 }
1646
1647 // TODO: this should take rotation orders into account later...
1648 void object_rot_to_mat3(Object *ob, float mat[][3])
1649 {
1650         float rmat[3][3], dmat[3][3];
1651         
1652         /* initialise the delta-rotation matrix, which will get (pre)multiplied 
1653          * with the rotation matrix to yield the appropriate rotation
1654          */
1655         unit_m3(dmat);
1656         
1657         /* rotations may either be quats, eulers (with various rotation orders), or axis-angle */
1658         if (ob->rotmode > 0) {
1659                 /* euler rotations (will cause gimble lock, but this can be alleviated a bit with rotation orders) */
1660                 eulO_to_mat3( rmat,ob->rot, ob->rotmode);
1661                 eulO_to_mat3( dmat,ob->drot, ob->rotmode);
1662         }
1663         else if (ob->rotmode == ROT_MODE_AXISANGLE) {
1664                 /* axis-angle -  not really that great for 3D-changing orientations */
1665                 axis_angle_to_mat3( rmat,ob->rotAxis, ob->rotAngle);
1666                 axis_angle_to_mat3( dmat,ob->drotAxis, ob->drotAngle);
1667         }
1668         else {
1669                 /* quats are normalised before use to eliminate scaling issues */
1670                 normalize_qt(ob->quat);
1671                 quat_to_mat3( rmat,ob->quat);
1672                 quat_to_mat3( dmat,ob->dquat);
1673         }
1674         
1675         /* combine these rotations */
1676         // XXX is this correct? if errors, change the order of multiplication...
1677         mul_m3_m3m3(mat, dmat, rmat);
1678 }
1679
1680 void object_mat3_to_rot(Object *ob, float mat[][3], int use_compat)
1681 {
1682         if (ob->rotmode == ROT_MODE_QUAT)
1683                 mat3_to_quat(ob->quat, mat);
1684         else if (ob->rotmode == ROT_MODE_AXISANGLE)
1685                 mat3_to_axis_angle(ob->rotAxis, &ob->rotAngle, mat);
1686         else {
1687                 if(use_compat) {
1688                         float eul[3];
1689                         VECCOPY(eul, ob->rot);
1690                         mat3_to_compatible_eulO(ob->rot, eul, ob->rotmode, mat);
1691                 }
1692                 else
1693                         mat3_to_eulO(ob->rot, ob->rotmode, mat);
1694         }
1695 }
1696
1697 /* see pchan_apply_mat4() for the equivalent 'pchan' function */
1698 void object_apply_mat4(Object *ob, float mat[][4])
1699 {
1700         float mat3[3][3];
1701         VECCOPY(ob->loc, mat[3]);
1702         mat4_to_size(ob->size, mat);
1703         copy_m3_m4(mat3, mat);
1704         object_mat3_to_rot(ob, mat3, 0);
1705 }
1706
1707 void object_to_mat3(Object *ob, float mat[][3]) /* no parent */
1708 {
1709         float smat[3][3];
1710         float rmat[3][3];
1711         /*float q1[4];*/
1712         
1713         /* size */
1714         object_scale_to_mat3(ob, smat);
1715
1716         /* rot */
1717         object_rot_to_mat3(ob, rmat);
1718         mul_m3_m3m3(mat, rmat, smat);
1719 }
1720
1721 void object_to_mat4(Object *ob, float mat[][4])
1722 {
1723         float tmat[3][3];
1724         
1725         object_to_mat3(ob, tmat);
1726         
1727         copy_m4_m3(mat, tmat);
1728
1729         add_v3_v3v3(mat[3], ob->loc, ob->dloc);
1730 }
1731
1732 int enable_cu_speed= 1;
1733
1734 static void ob_parcurve(Scene *scene, Object *ob, Object *par, float mat[][4])
1735 {
1736         Curve *cu;
1737         float q[4], vec[4], dir[3], quat[4], radius, x1, ctime;
1738         float timeoffs = 0.0, sf_orig = 0.0;
1739         
1740         unit_m4(mat);
1741         
1742         cu= par->data;
1743         if(cu->path==NULL || cu->path->data==NULL) /* only happens on reload file, but violates depsgraph still... fix! */
1744                 makeDispListCurveTypes(scene, par, 0);
1745         if(cu->path==NULL) return;
1746         
1747         /* exception, timeoffset is regarded as distance offset */
1748         if(cu->flag & CU_OFFS_PATHDIST) {
1749                 timeoffs = give_timeoffset(ob);
1750                 SWAP(float, sf_orig, ob->sf);
1751         }
1752         
1753         /* catch exceptions: feature for nla stride editing */
1754         if(ob->ipoflag & OB_DISABLE_PATH) {
1755                 ctime= 0.0f;
1756         }
1757         /* catch exceptions: curve paths used as a duplicator */
1758         else if(enable_cu_speed) {
1759                 /* ctime is now a proper var setting of Curve which gets set by Animato like any other var that's animated,
1760                  * but this will only work if it actually is animated... 
1761                  *
1762                  * we divide the curvetime calculated in the previous step by the length of the path, to get a time
1763                  * factor, which then gets clamped to lie within 0.0 - 1.0 range
1764                  */
1765                 ctime= cu->ctime / cu->pathlen;
1766                 CLAMP(ctime, 0.0, 1.0);
1767         }
1768         else {
1769                 ctime= scene->r.cfra - give_timeoffset(ob);
1770                 ctime /= cu->pathlen;
1771                 
1772                 CLAMP(ctime, 0.0, 1.0);
1773         }
1774         
1775         /* time calculus is correct, now apply distance offset */
1776         if(cu->flag & CU_OFFS_PATHDIST) {
1777                 ctime += timeoffs/cu->path->totdist;
1778
1779                 /* restore */
1780                 SWAP(float, sf_orig, ob->sf);
1781         }
1782         
1783         
1784         /* vec: 4 items! */
1785          if( where_on_path(par, ctime, vec, dir, NULL, &radius, NULL) ) {
1786
1787                 if(cu->flag & CU_FOLLOW) {
1788                         vec_to_quat( quat,dir, ob->trackflag, ob->upflag);
1789                         
1790                         /* the tilt */
1791                         normalize_v3(dir);
1792                         q[0]= (float)cos(0.5*vec[3]);
1793                         x1= (float)sin(0.5*vec[3]);
1794                         q[1]= -x1*dir[0];
1795                         q[2]= -x1*dir[1];
1796                         q[3]= -x1*dir[2];
1797                         mul_qt_qtqt(quat, q, quat);
1798                         
1799                         quat_to_mat4( mat,quat);
1800                 }
1801                 
1802                 if(cu->flag & CU_PATH_RADIUS) {
1803                         float tmat[4][4], rmat[4][4];
1804                         scale_m4_fl(tmat, radius);
1805                         mul_m4_m4m4(rmat, mat, tmat);
1806                         copy_m4_m4(mat, rmat);
1807                 }
1808
1809                 VECCOPY(mat[3], vec);
1810                 
1811         }
1812 }
1813
1814 static void ob_parbone(Object *ob, Object *par, float mat[][4])
1815 {       
1816         bPoseChannel *pchan;
1817         float vec[3];
1818         
1819         if (par->type!=OB_ARMATURE) {
1820                 unit_m4(mat);
1821                 return;
1822         }
1823         
1824         /* Make sure the bone is still valid */
1825         pchan= get_pose_channel(par->pose, ob->parsubstr);
1826         if (!pchan){
1827                 printf ("Object %s with Bone parent: bone %s doesn't exist\n", ob->id.name+2, ob->parsubstr);
1828                 unit_m4(mat);
1829                 return;
1830         }
1831
1832         /* get bone transform */
1833         copy_m4_m4(mat, pchan->pose_mat);
1834
1835         /* but for backwards compatibility, the child has to move to the tail */
1836         VECCOPY(vec, mat[1]);
1837         mul_v3_fl(vec, pchan->bone->length);
1838         add_v3_v3(mat[3], vec);
1839 }
1840
1841 static void give_parvert(Object *par, int nr, float *vec)
1842 {
1843         EditMesh *em;
1844         int a, count;
1845         
1846         vec[0]=vec[1]=vec[2]= 0.0f;
1847         
1848         if(par->type==OB_MESH) {
1849                 Mesh *me= par->data;
1850                 em = BKE_mesh_get_editmesh(me);
1851
1852                 if(em) {
1853                         EditVert *eve;
1854                         
1855                         for(eve= em->verts.first; eve; eve= eve->next) {
1856                                 if(eve->keyindex==nr) {
1857                                         memcpy(vec, eve->co, sizeof(float)*3);
1858                                         break;
1859                                 }
1860                         }
1861                         BKE_mesh_end_editmesh(me, em);
1862                 }
1863                 else {
1864                         DerivedMesh *dm = par->derivedFinal;
1865                         
1866                         if(dm) {
1867                                 MVert *mvert= dm->getVertArray(dm);
1868                                 int *index = (int *)dm->getVertDataArray(dm, CD_ORIGINDEX);
1869                                 int i, count = 0, vindex, numVerts = dm->getNumVerts(dm);
1870
1871                                 /* get the average of all verts with (original index == nr) */
1872                                 for(i = 0; i < numVerts; i++) {
1873                                         vindex= (index)? index[i]: i;
1874
1875                                         if(vindex == nr) {
1876                                                 add_v3_v3(vec, mvert[i].co);
1877                                                 count++;
1878                                         }
1879                                 }
1880
1881                                 if (count==0) {
1882                                         /* keep as 0,0,0 */
1883                                 } else if(count > 0) {
1884                                         mul_v3_fl(vec, 1.0f / count);
1885                                 } else {
1886                                         /* use first index if its out of range */
1887                                         dm->getVertCo(dm, 0, vec);
1888                                 }
1889                         }
1890                 }
1891         }
1892         else if (ELEM(par->type, OB_CURVE, OB_SURF)) {
1893                 Nurb *nu;
1894                 Curve *cu;
1895                 BPoint *bp;
1896                 BezTriple *bezt;
1897                 int found= 0;
1898                 
1899                 cu= par->data;
1900                 if(cu->editnurb)
1901                         nu= cu->editnurb->first;
1902                 else
1903                         nu= cu->nurb.first;
1904                 
1905                 count= 0;
1906                 while(nu && !found) {
1907                         if(nu->type == CU_BEZIER) {
1908                                 bezt= nu->bezt;
1909                                 a= nu->pntsu;
1910                                 while(a--) {
1911                                         if(count==nr) {
1912                                                 found= 1;
1913                                                 VECCOPY(vec, bezt->vec[1]);
1914                                                 break;
1915                                         }
1916                                         count++;
1917                                         bezt++;
1918                                 }
1919                         }
1920                         else {
1921                                 bp= nu->bp;
1922                                 a= nu->pntsu*nu->pntsv;
1923                                 while(a--) {
1924                                         if(count==nr) {
1925                                                 found= 1;
1926                                                 memcpy(vec, bp->vec, sizeof(float)*3);
1927                                                 break;
1928                                         }
1929                                         count++;
1930                                         bp++;
1931                                 }
1932                         }
1933                         nu= nu->next;
1934                 }
1935
1936         }
1937         else if(par->type==OB_LATTICE) {
1938                 Lattice *latt= par->data;
1939                 BPoint *bp;
1940                 DispList *dl = find_displist(&par->disp, DL_VERTS);
1941                 float *co = dl?dl->verts:NULL;
1942                 
1943                 if(latt->editlatt) latt= latt->editlatt;
1944                 
1945                 a= latt->pntsu*latt->pntsv*latt->pntsw;
1946                 count= 0;
1947                 bp= latt->def;
1948                 while(a--) {
1949                         if(count==nr) {
1950                                 if(co)
1951                                         memcpy(vec, co, 3*sizeof(float));
1952                                 else
1953                                         memcpy(vec, bp->vec, 3*sizeof(float));
1954                                 break;
1955                         }
1956                         count++;
1957                         if(co) co+= 3;
1958                         else bp++;
1959                 }
1960         }
1961 }
1962
1963 static void ob_parvert3(Object *ob, Object *par, float mat[][4])
1964 {
1965         float cmat[3][3], v1[3], v2[3], v3[3], q[4];
1966
1967         /* in local ob space */
1968         unit_m4(mat);
1969         
1970         if (ELEM4(par->type, OB_MESH, OB_SURF, OB_CURVE, OB_LATTICE)) {
1971                 
1972                 give_parvert(par, ob->par1, v1);
1973                 give_parvert(par, ob->par2, v2);
1974                 give_parvert(par, ob->par3, v3);
1975                                 
1976                 tri_to_quat( q,v1, v2, v3);
1977                 quat_to_mat3( cmat,q);
1978                 copy_m4_m3(mat, cmat);
1979                 
1980                 if(ob->type==OB_CURVE) {
1981                         VECCOPY(mat[3], v1);
1982                 }
1983                 else {
1984                         add_v3_v3v3(mat[3], v1, v2);
1985                         add_v3_v3(mat[3], v3);
1986                         mul_v3_fl(mat[3], 0.3333333f);
1987                 }
1988         }
1989 }
1990
1991 // XXX what the hell is this?
1992 static int no_parent_ipo=0;
1993 void set_no_parent_ipo(int val)
1994 {
1995         no_parent_ipo= val;
1996 }
1997
1998 void where_is_object_time(Scene *scene, Object *ob, float ctime)
1999 {
2000         float *fp1, *fp2, slowmat[4][4] = MAT4_UNITY;
2001         float stime=ctime, fac1, fac2;
2002         int a;
2003         
2004         /* new version: correct parent+vertexparent and track+parent */
2005         /* this one only calculates direct attached parent and track */
2006         /* is faster, but should keep track of timeoffs */
2007         
2008         if(ob==NULL) return;
2009         
2010         /* execute drivers only, as animation has already been done */
2011         BKE_animsys_evaluate_animdata(&ob->id, ob->adt, ctime, ADT_RECALC_DRIVERS);
2012         
2013         if(ob->parent) {
2014                 Object *par= ob->parent;
2015                 
2016                 // XXX depreceated - animsys
2017                 if(ob->ipoflag & OB_OFFS_PARENT) ctime-= give_timeoffset(ob);
2018                 
2019                 /* hurms, code below conflicts with depgraph... (ton) */
2020                 /* and even worse, it gives bad effects for NLA stride too (try ctime != par->ctime, with MBlur) */
2021                 if(no_parent_ipo==0 && stime != par->ctime) {
2022                         // only for ipo systems? 
2023                         Object tmp= *par;
2024                         
2025                         if(par->proxy_from);    // was a copied matrix, no where_is! bad...
2026                         else where_is_object_time(scene, par, ctime);
2027
2028                         solve_parenting(scene, ob, par, ob->obmat, slowmat, 0);
2029
2030                         *par= tmp;
2031                 }
2032                 else
2033                         solve_parenting(scene, ob, par, ob->obmat, slowmat, 0);
2034                 
2035                 if(ob->partype & PARSLOW) {
2036                         // include framerate
2037                         fac1= ( 1.0f / (1.0f + (float)fabs(give_timeoffset(ob))) );
2038                         if(fac1 >= 1.0f) return;
2039                         fac2= 1.0f-fac1;
2040                         
2041                         fp1= ob->obmat[0];
2042                         fp2= slowmat[0];
2043                         for(a=0; a<16; a++, fp1++, fp2++) {
2044                                 fp1[0]= fac1*fp1[0] + fac2*fp2[0];
2045                         }
2046                 }
2047         }
2048         else {
2049                 object_to_mat4(ob, ob->obmat);
2050         }
2051
2052         /* solve constraints */
2053         if (ob->constraints.first && !(ob->flag & OB_NO_CONSTRAINTS)) {
2054                 bConstraintOb *cob;
2055                 
2056                 cob= constraints_make_evalob(scene, ob, NULL, CONSTRAINT_OBTYPE_OBJECT);
2057                 
2058                 /* constraints need ctime, not stime. Some call where_is_object_time and bsystem_time */
2059                 solve_constraints (&ob->constraints, cob, ctime);
2060                 
2061                 constraints_clear_evalob(cob);
2062         }
2063         
2064         /* set negative scale flag in object */
2065         if(is_negative_m4(ob->obmat))   ob->transflag |= OB_NEG_SCALE;
2066         else                                                    ob->transflag &= ~OB_NEG_SCALE;
2067 }
2068
2069 static void solve_parenting (Scene *scene, Object *ob, Object *par, float obmat[][4], float slowmat[][4], int simul)
2070 {
2071         float totmat[4][4];
2072         float tmat[4][4];
2073         float locmat[4][4];
2074         float vec[3];
2075         int ok;
2076         
2077         object_to_mat4(ob, locmat);
2078         
2079         if(ob->partype & PARSLOW) copy_m4_m4(slowmat, obmat);
2080
2081         switch(ob->partype & PARTYPE) {
2082         case PAROBJECT:
2083                 ok= 0;
2084                 if(par->type==OB_CURVE) {
2085                         if( ((Curve *)par->data)->flag & CU_PATH ) {
2086                                 ob_parcurve(scene, ob, par, tmat);
2087                                 ok= 1;
2088                         }
2089                 }
2090                 
2091                 if(ok) mul_serie_m4(totmat, par->obmat, tmat, 
2092                         NULL, NULL, NULL, NULL, NULL, NULL);
2093                 else copy_m4_m4(totmat, par->obmat);
2094                 
2095                 break;
2096         case PARBONE:
2097                 ob_parbone(ob, par, tmat);
2098                 mul_serie_m4(totmat, par->obmat, tmat,         
2099                         NULL, NULL, NULL, NULL, NULL, NULL);
2100                 break;
2101                 
2102         case PARVERT1:
2103                 unit_m4(totmat);
2104                 if (simul){
2105                         VECCOPY(totmat[3], par->obmat[3]);
2106                 }
2107                 else{
2108                         give_parvert(par, ob->par1, vec);
2109                         mul_v3_m4v3(totmat[3], par->obmat, vec);
2110                 }
2111                 break;
2112         case PARVERT3:
2113                 ob_parvert3(ob, par, tmat);
2114                 
2115                 mul_serie_m4(totmat, par->obmat, tmat,         
2116                         NULL, NULL, NULL, NULL, NULL, NULL);
2117                 break;
2118                 
2119         case PARSKEL:
2120                 copy_m4_m4(totmat, par->obmat);
2121                 break;
2122         }
2123         
2124         // total 
2125         mul_serie_m4(tmat, totmat, ob->parentinv,         
2126                 NULL, NULL, NULL, NULL, NULL, NULL);
2127         mul_serie_m4(obmat, tmat, locmat,         
2128                 NULL, NULL, NULL, NULL, NULL, NULL);
2129         
2130         if (simul) {
2131
2132         }
2133         else{
2134                 // external usable originmat 
2135                 copy_m3_m4(originmat, tmat);
2136                 
2137                 // origin, voor help line
2138                 if( (ob->partype & 15)==PARSKEL ) {
2139                         VECCOPY(ob->orig, par->obmat[3]);
2140                 }
2141                 else {
2142                         VECCOPY(ob->orig, totmat[3]);
2143                 }
2144         }
2145
2146 }
2147
2148 void where_is_object(struct Scene *scene, Object *ob)
2149 {
2150         where_is_object_time(scene, ob, (float)scene->r.cfra);
2151 }
2152
2153
2154 void where_is_object_simul(Scene *scene, Object *ob)
2155 /* was written for the old game engine (until 2.04) */
2156 /* It seems that this function is only called
2157 for a lamp that is the child of another object */
2158 {
2159         Object *par;
2160         //Ipo *ipo;
2161         float *fp1, *fp2;
2162         float slowmat[4][4];
2163         float fac1, fac2;
2164         int a;
2165         
2166         /* NO TIMEOFFS */
2167         if(ob->parent) {
2168                 par= ob->parent;
2169                 
2170                 solve_parenting(scene, ob, par, ob->obmat, slowmat, 1);
2171
2172                 if(ob->partype & PARSLOW) {
2173
2174                         fac1= (float)(1.0/(1.0+ fabs(give_timeoffset(ob))));
2175                         fac2= 1.0f-fac1;
2176                         fp1= ob->obmat[0];
2177                         fp2= slowmat[0];
2178                         for(a=0; a<16; a++, fp1++, fp2++) {
2179                                 fp1[0]= fac1*fp1[0] + fac2*fp2[0];
2180                         }
2181                 }
2182                 
2183         }
2184         else {
2185                 object_to_mat4(ob, ob->obmat);
2186         }
2187         
2188         /* solve constraints */
2189         if (ob->constraints.first) {
2190                 bConstraintOb *cob;
2191                 
2192                 cob= constraints_make_evalob(scene, ob, NULL, CONSTRAINT_OBTYPE_OBJECT);
2193                 solve_constraints(&ob->constraints, cob, (float)scene->r.cfra);
2194                 constraints_clear_evalob(cob);
2195         }
2196 }
2197
2198 /* for calculation of the inverse parent transform, only used for editor */
2199 void what_does_parent(Scene *scene, Object *ob, Object *workob)
2200 {
2201         clear_workob(workob);
2202         
2203         unit_m4(workob->obmat);
2204         unit_m4(workob->parentinv);
2205         unit_m4(workob->constinv);
2206         workob->parent= ob->parent;
2207
2208         workob->trackflag= ob->trackflag;
2209         workob->upflag= ob->upflag;
2210         
2211         workob->partype= ob->partype;
2212         workob->par1= ob->par1;
2213         workob->par2= ob->par2;
2214         workob->par3= ob->par3;
2215
2216         workob->constraints.first = ob->constraints.first;
2217         workob->constraints.last = ob->constraints.last;
2218
2219         strcpy(workob->parsubstr, ob->parsubstr); 
2220
2221         where_is_object(scene, workob);
2222 }
2223
2224 BoundBox *unit_boundbox()
2225 {
2226         BoundBox *bb;
2227         float min[3] = {-1.0f,-1.0f,-1.0f}, max[3] = {-1.0f,-1.0f,-1.0f};
2228
2229         bb= MEM_callocN(sizeof(BoundBox), "bb");
2230         boundbox_set_from_min_max(bb, min, max);
2231         
2232         return bb;
2233 }
2234
2235 void boundbox_set_from_min_max(BoundBox *bb, float min[3], float max[3])
2236 {
2237         bb->vec[0][0]=bb->vec[1][0]=bb->vec[2][0]=bb->vec[3][0]= min[0];
2238         bb->vec[4][0]=bb->vec[5][0]=bb->vec[6][0]=bb->vec[7][0]= max[0];
2239         
2240         bb->vec[0][1]=bb->vec[1][1]=bb->vec[4][1]=bb->vec[5][1]= min[1];
2241         bb->vec[2][1]=bb->vec[3][1]=bb->vec[6][1]=bb->vec[7][1]= max[1];
2242
2243         bb->vec[0][2]=bb->vec[3][2]=bb->vec[4][2]=bb->vec[7][2]= min[2];
2244         bb->vec[1][2]=bb->vec[2][2]=bb->vec[5][2]=bb->vec[6][2]= max[2];
2245 }
2246
2247 BoundBox *object_get_boundbox(Object *ob)
2248 {
2249         BoundBox *bb= NULL;
2250         
2251         if(ob->type==OB_MESH) {
2252                 bb = mesh_get_bb(ob);
2253         }
2254         else if (ELEM3(ob->type, OB_CURVE, OB_SURF, OB_FONT)) {
2255                 bb= ob->bb ? ob->bb : ( (Curve *)ob->data )->bb;
2256         }
2257         else if(ob->type==OB_MBALL) {
2258                 bb= ob->bb;
2259         }
2260         return bb;
2261 }
2262
2263 /* used to temporally disable/enable boundbox */
2264 void object_boundbox_flag(Object *ob, int flag, int set)
2265 {
2266         BoundBox *bb= object_get_boundbox(ob);
2267         if(bb) {
2268                 if(set) bb->flag |= flag;
2269                 else bb->flag &= ~flag;
2270         }
2271 }
2272
2273 void object_get_dimensions(Object *ob, float *value)
2274 {
2275         BoundBox *bb = NULL;
2276         
2277         bb= object_get_boundbox(ob);
2278         if (bb) {
2279                 float scale[3];
2280                 
2281                 mat4_to_size( scale,ob->obmat);
2282                 
2283                 value[0] = fabs(scale[0]) * (bb->vec[4][0] - bb->vec[0][0]);
2284                 value[1] = fabs(scale[1]) * (bb->vec[2][1] - bb->vec[0][1]);
2285                 value[2] = fabs(scale[2]) * (bb->vec[1][2] - bb->vec[0][2]);
2286         } else {
2287                 value[0] = value[1] = value[2] = 0.f;
2288         }
2289 }
2290
2291 void object_set_dimensions(Object *ob, const float *value)
2292 {
2293         BoundBox *bb = NULL;
2294         
2295         bb= object_get_boundbox(ob);
2296         if (bb) {
2297                 float scale[3], len[3];
2298                 
2299                 mat4_to_size( scale,ob->obmat);
2300                 
2301                 len[0] = bb->vec[4][0] - bb->vec[0][0];
2302                 len[1] = bb->vec[2][1] - bb->vec[0][1];
2303                 len[2] = bb->vec[1][2] - bb->vec[0][2];
2304                 
2305                 if (len[0] > 0.f) ob->size[0] = value[0] / len[0];
2306                 if (len[1] > 0.f) ob->size[1] = value[1] / len[1];
2307                 if (len[2] > 0.f) ob->size[2] = value[2] / len[2];
2308         }
2309 }
2310
2311 void minmax_object(Object *ob, float *min, float *max)
2312 {
2313         BoundBox bb;
2314         Mesh *me;
2315         Curve *cu;
2316         float vec[3];
2317         int a;
2318         
2319         switch(ob->type) {
2320                 
2321         case OB_CURVE:
2322         case OB_FONT:
2323         case OB_SURF:
2324                 cu= ob->data;
2325                 
2326                 if(cu->bb==NULL) tex_space_curve(cu);
2327                 bb= *(cu->bb);
2328                 
2329                 for(a=0; a<8; a++) {
2330                         mul_m4_v3(ob->obmat, bb.vec[a]);
2331                         DO_MINMAX(bb.vec[a], min, max);
2332                 }
2333                 break;
2334         case OB_ARMATURE:
2335                 if(ob->pose) {
2336                         bPoseChannel *pchan;
2337                         for(pchan= ob->pose->chanbase.first; pchan; pchan= pchan->next) {
2338                                 VECCOPY(vec, pchan->pose_head);
2339                                 mul_m4_v3(ob->obmat, vec);
2340                                 DO_MINMAX(vec, min, max);
2341                                 VECCOPY(vec, pchan->pose_tail);
2342                                 mul_m4_v3(ob->obmat, vec);
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 = BKE_mesh_get_editmesh(ob->data);
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 &&
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= (cu->editnurb)? cu->editnurb: &cu->nurb;
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                 curve_to_key(cu, kb, lb);
2972         }
2973         else {
2974                 /* copy from current values */
2975                 float *data= do_ob_key(scene, ob);
2976
2977                 /* create new block with prepared data */
2978                 kb= add_keyblock(key, name);
2979                 kb->totelem= count_curveverts(lb);
2980                 kb->data= data;
2981         }
2982
2983         return kb;
2984 }
2985
2986 KeyBlock *object_insert_shape_key(Scene *scene, Object *ob, char *name, int from_mix)
2987 {
2988         if(ob->type==OB_MESH)                                    return insert_meshkey(scene, ob, name, from_mix);
2989         else if ELEM(ob->type, OB_CURVE, OB_SURF)return insert_curvekey(scene, ob, name, from_mix);
2990         else if(ob->type==OB_LATTICE)                    return insert_lattkey(scene, ob, name, from_mix);
2991         else                                                                     return NULL;
2992 }
2993