part 1 of merge from trunk at r30358; it compiles, but doesn't link quite yet :)
[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_tessmesh.h"
86 #include "BKE_mball.h"
87 #include "BKE_modifier.h"
88 #include "BKE_object.h"
89 #include "BKE_paint.h"
90 #include "BKE_particle.h"
91 #include "BKE_pointcache.h"
92 #include "BKE_property.h"
93 #include "BKE_sca.h"
94 #include "BKE_scene.h"
95 #include "BKE_sequencer.h"
96 #include "BKE_softbody.h"
97
98 #include "LBM_fluidsim.h"
99
100 #ifndef DISABLE_PYTHON
101 #include "BPY_extern.h"
102 #endif
103
104 #include "GPU_material.h"
105
106 /* Local function protos */
107 static void solve_parenting (Scene *scene, Object *ob, Object *par, float obmat[][4], float slowmat[][4], int simul);
108
109 float originmat[3][3];  /* after where_is_object(), can be used in other functions (bad!) */
110
111 void clear_workob(Object *workob)
112 {
113         memset(workob, 0, sizeof(Object));
114         
115         workob->size[0]= workob->size[1]= workob->size[2]= 1.0f;
116         workob->rotmode= ROT_MODE_EUL;
117 }
118
119 void copy_baseflags(struct Scene *scene)
120 {
121         Base *base= scene->base.first;
122         
123         while(base) {
124                 base->object->flag= base->flag;
125                 base= base->next;
126         }
127 }
128
129 void copy_objectflags(struct Scene *scene)
130 {
131         Base *base= scene->base.first;
132         
133         while(base) {
134                 base->flag= base->object->flag;
135                 base= base->next;
136         }
137 }
138
139 void update_base_layer(struct Scene *scene, Object *ob)
140 {
141         Base *base= scene->base.first;
142
143         while (base) {
144                 if (base->object == ob) base->lay= ob->lay;
145                 base= base->next;
146         }
147 }
148
149 void object_free_particlesystems(Object *ob)
150 {
151         while(ob->particlesystem.first){
152                 ParticleSystem *psys = ob->particlesystem.first;
153                 
154                 BLI_remlink(&ob->particlesystem,psys);
155                 
156                 psys_free(ob,psys);
157         }
158 }
159
160 void object_free_softbody(Object *ob)
161 {
162         if(ob->soft) {
163                 sbFree(ob->soft);
164                 ob->soft= NULL;
165         }
166 }
167
168 void object_free_bulletsoftbody(Object *ob)
169 {
170         if(ob->bsoft) {
171                 bsbFree(ob->bsoft);
172                 ob->bsoft= NULL;
173         }
174 }
175
176 void object_free_modifiers(Object *ob)
177 {
178         while (ob->modifiers.first) {
179                 ModifierData *md = ob->modifiers.first;
180                 
181                 BLI_remlink(&ob->modifiers, md);
182                 
183                 modifier_free(md);
184         }
185
186         /* particle modifiers were freed, so free the particlesystems as well */
187         object_free_particlesystems(ob);
188
189         /* same for softbody */
190         object_free_softbody(ob);
191 }
192
193 void object_link_modifiers(struct Object *ob, struct Object *from)
194 {
195         ModifierData *md;
196         object_free_modifiers(ob);
197
198         for (md=from->modifiers.first; md; md=md->next) {
199                 ModifierData *nmd = NULL;
200
201                 if(ELEM4(md->type, eModifierType_Hook, eModifierType_Softbody, eModifierType_ParticleInstance, eModifierType_Collision)) continue;
202
203                 nmd = modifier_new(md->type);
204                 modifier_copyData(md, nmd);
205                 BLI_addtail(&ob->modifiers, nmd);
206         }
207
208         copy_object_particlesystems(from, ob);
209         copy_object_softbody(from, ob);
210
211         // TODO: smoke?, cloth?
212 }
213
214 /* here we will collect all local displist stuff */
215 /* also (ab)used in depsgraph */
216 void object_free_display(Object *ob)
217 {
218         if(ob->derivedDeform) {
219                 ob->derivedDeform->needsFree = 1;
220                 ob->derivedDeform->release(ob->derivedDeform);
221                 ob->derivedDeform= NULL;
222         }
223         if(ob->derivedFinal) {
224                 ob->derivedFinal->needsFree = 1;
225                 ob->derivedFinal->release(ob->derivedFinal);
226                 ob->derivedFinal= NULL;
227         }
228         
229         freedisplist(&ob->disp);
230 }
231
232 void free_sculptsession(Object *ob)
233 {
234         if(ob && ob->sculpt) {
235                 SculptSession *ss = ob->sculpt;
236                 DerivedMesh *dm= ob->derivedFinal;
237
238                 if(ss->pbvh)
239                         BLI_pbvh_free(ss->pbvh);
240                 if(dm && dm->getPBVH)
241                         dm->getPBVH(NULL, dm); /* signal to clear */
242
243                 if(ss->texcache)
244                         MEM_freeN(ss->texcache);
245
246                 if(ss->layer_co)
247                         MEM_freeN(ss->layer_co);
248
249                 MEM_freeN(ss);
250
251                 ob->sculpt = NULL;
252         }
253 }
254
255 /* do not free object itself */
256 void free_object(Object *ob)
257 {
258         int a;
259         
260         object_free_display(ob);
261         
262         /* disconnect specific data */
263         if(ob->data) {
264                 ID *id= ob->data;
265                 id->us--;
266                 if(id->us==0) {
267                         if(ob->type==OB_MESH) unlink_mesh(ob->data);
268                         else if(ob->type==OB_CURVE) unlink_curve(ob->data);
269                         else if(ob->type==OB_MBALL) unlink_mball(ob->data);
270                 }
271                 ob->data= 0;
272         }
273         
274         for(a=0; a<ob->totcol; a++) {
275                 if(ob->mat[a]) ob->mat[a]->id.us--;
276         }
277         if(ob->mat) MEM_freeN(ob->mat);
278         if(ob->matbits) MEM_freeN(ob->matbits);
279         ob->mat= 0;
280         ob->matbits= 0;
281         if(ob->bb) MEM_freeN(ob->bb); 
282         ob->bb= 0;
283         if(ob->path) free_path(ob->path); 
284         ob->path= 0;
285         if(ob->adt) BKE_free_animdata((ID *)ob);
286         if(ob->poselib) ob->poselib->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         
1061         /* NT fluid sim defaults */
1062         ob->fluidsimFlag = 0;
1063         ob->fluidsimSettings = NULL;
1064
1065         ob->pc_ids.first = ob->pc_ids.last = NULL;
1066         
1067         /* Animation Visualisation defaults */
1068         animviz_settings_init(&ob->avs);
1069
1070         return ob;
1071 }
1072
1073 /* general add: to scene, with layer from area and default name */
1074 /* creates minimum required data, but without vertices etc. */
1075 Object *add_object(struct Scene *scene, int type)
1076 {
1077         Object *ob;
1078         Base *base;
1079         char name[32];
1080
1081         strcpy(name, get_obdata_defname(type));
1082         ob = add_only_object(type, name);
1083
1084         ob->data= add_obdata_from_type(type);
1085
1086         ob->lay= scene->lay;
1087         
1088         base= scene_add_base(scene, ob);
1089         scene_select_base(scene, base);
1090         ob->recalc |= OB_RECALC_ALL;
1091
1092         return ob;
1093 }
1094
1095 SoftBody *copy_softbody(SoftBody *sb)
1096 {
1097         SoftBody *sbn;
1098         
1099         if (sb==NULL) return(NULL);
1100         
1101         sbn= MEM_dupallocN(sb);
1102         sbn->totspring= sbn->totpoint= 0;
1103         sbn->bpoint= NULL;
1104         sbn->bspring= NULL;
1105         
1106         sbn->keys= NULL;
1107         sbn->totkey= sbn->totpointkey= 0;
1108         
1109         sbn->scratch= NULL;
1110
1111         sbn->pointcache= BKE_ptcache_copy_list(&sbn->ptcaches, &sb->ptcaches);
1112
1113         if(sb->effector_weights)
1114                 sbn->effector_weights = MEM_dupallocN(sb->effector_weights);
1115
1116         return sbn;
1117 }
1118
1119 BulletSoftBody *copy_bulletsoftbody(BulletSoftBody *bsb)
1120 {
1121         BulletSoftBody *bsbn;
1122
1123         if (bsb == NULL)
1124                 return NULL;
1125         bsbn = MEM_dupallocN(bsb);
1126         /* no pointer in this structure yet */
1127         return bsbn;
1128 }
1129
1130 ParticleSystem *copy_particlesystem(ParticleSystem *psys)
1131 {
1132         ParticleSystem *psysn;
1133         ParticleData *pa;
1134         int p;
1135
1136         psysn= MEM_dupallocN(psys);
1137         psysn->particles= MEM_dupallocN(psys->particles);
1138         psysn->child= MEM_dupallocN(psys->child);
1139
1140         if(psys->part->type == PART_HAIR) {
1141                 for(p=0, pa=psysn->particles; p<psysn->totpart; p++, pa++)
1142                         pa->hair = MEM_dupallocN(pa->hair);
1143         }
1144
1145         if(psysn->particles && (psysn->particles->keys || psysn->particles->boid)) {
1146                 ParticleKey *key = psysn->particles->keys;
1147                 BoidParticle *boid = psysn->particles->boid;
1148
1149                 if(key)
1150                         key = MEM_dupallocN(key);
1151                 
1152                 if(boid)
1153                         boid = MEM_dupallocN(boid);
1154                 
1155                 for(p=0, pa=psysn->particles; p<psysn->totpart; p++, pa++) {
1156                         if(boid)
1157                                 pa->boid = boid++;
1158                         if(key) {
1159                                 pa->keys = key;
1160                                 key += pa->totkey;
1161                         }
1162                 }
1163         }
1164
1165         if(psys->clmd) {
1166                 psysn->clmd = (ClothModifierData *)modifier_new(eModifierType_Cloth);
1167                 modifier_copyData((ModifierData*)psys->clmd, (ModifierData*)psysn->clmd);
1168                 psys->hair_in_dm = psys->hair_out_dm = NULL;
1169         }
1170
1171         BLI_duplicatelist(&psysn->targets, &psys->targets);
1172
1173         psysn->pathcache= NULL;
1174         psysn->childcache= NULL;
1175         psysn->edit= NULL;
1176         psysn->frand= NULL;
1177         psysn->pdd= NULL;
1178         psysn->effectors= NULL;
1179         
1180         psysn->pathcachebufs.first = psysn->pathcachebufs.last = NULL;
1181         psysn->childcachebufs.first = psysn->childcachebufs.last = NULL;
1182         psysn->renderdata = NULL;
1183         
1184         psysn->pointcache= BKE_ptcache_copy_list(&psysn->ptcaches, &psys->ptcaches);
1185
1186         /* XXX - from reading existing code this seems correct but intended usage of
1187          * pointcache should /w cloth should be added in 'ParticleSystem' - campbell */
1188         if(psysn->clmd) {
1189                 psysn->clmd->point_cache= psysn->pointcache;
1190         }
1191
1192         id_us_plus((ID *)psysn->part);
1193
1194         return psysn;
1195 }
1196
1197 void copy_object_particlesystems(Object *obn, Object *ob)
1198 {
1199         ParticleSystemModifierData *psmd;
1200         ParticleSystem *psys, *npsys;
1201         ModifierData *md;
1202
1203         obn->particlesystem.first= obn->particlesystem.last= NULL;
1204         for(psys=ob->particlesystem.first; psys; psys=psys->next) {
1205                 npsys= copy_particlesystem(psys);
1206
1207                 BLI_addtail(&obn->particlesystem, npsys);
1208
1209                 /* need to update particle modifiers too */
1210                 for(md=obn->modifiers.first; md; md=md->next) {
1211                         if(md->type==eModifierType_ParticleSystem) {
1212                                 psmd= (ParticleSystemModifierData*)md;
1213                                 if(psmd->psys==psys)
1214                                         psmd->psys= npsys;
1215                         }
1216                 }
1217         }
1218 }
1219
1220 void copy_object_softbody(Object *obn, Object *ob)
1221 {
1222         if(ob->soft)
1223                 obn->soft= copy_softbody(ob->soft);
1224 }
1225
1226 static void copy_object_pose(Object *obn, Object *ob)
1227 {
1228         bPoseChannel *chan;
1229         
1230         /* note: need to clear obn->pose pointer first, so that copy_pose works (otherwise there's a crash) */
1231         obn->pose= NULL;
1232         copy_pose(&obn->pose, ob->pose, 1);     /* 1 = copy constraints */
1233
1234         for (chan = obn->pose->chanbase.first; chan; chan=chan->next){
1235                 bConstraint *con;
1236                 
1237                 chan->flag &= ~(POSE_LOC|POSE_ROT|POSE_SIZE);
1238                 
1239                 for (con= chan->constraints.first; con; con= con->next) {
1240                         bConstraintTypeInfo *cti= constraint_get_typeinfo(con);
1241                         ListBase targets = {NULL, NULL};
1242                         bConstraintTarget *ct;
1243                         
1244 #if 0 // XXX old animation system
1245                         /* note that we can't change lib linked ipo blocks. for making
1246                          * proxies this still works correct however because the object
1247                          * is changed to object->proxy_from when evaluating the driver. */
1248                         if(con->ipo && !con->ipo->id.lib) {
1249                                 IpoCurve *icu;
1250                                 
1251                                 con->ipo= copy_ipo(con->ipo);
1252                                 
1253                                 for(icu= con->ipo->curve.first; icu; icu= icu->next) {
1254                                         if(icu->driver && icu->driver->ob==ob)
1255                                                 icu->driver->ob= obn;
1256                                 }
1257                         }
1258 #endif // XXX old animation system
1259                         
1260                         if (cti && cti->get_constraint_targets) {
1261                                 cti->get_constraint_targets(con, &targets);
1262                                 
1263                                 for (ct= targets.first; ct; ct= ct->next) {
1264                                         if (ct->tar == ob)
1265                                                 ct->tar = obn;
1266                                 }
1267                                 
1268                                 if (cti->flush_constraint_targets)
1269                                         cti->flush_constraint_targets(con, &targets, 0);
1270                         }
1271                 }
1272         }
1273 }
1274
1275 Object *copy_object(Object *ob)
1276 {
1277         Object *obn;
1278         ModifierData *md;
1279         int a;
1280
1281         obn= copy_libblock(ob);
1282         
1283         if(ob->totcol) {
1284                 obn->mat= MEM_dupallocN(ob->mat);
1285                 obn->matbits= MEM_dupallocN(ob->matbits);
1286                 obn->totcol= ob->totcol;
1287         }
1288         
1289         if(ob->bb) obn->bb= MEM_dupallocN(ob->bb);
1290         obn->path= NULL;
1291         obn->flag &= ~OB_FROMGROUP;
1292         
1293         obn->modifiers.first = obn->modifiers.last= NULL;
1294         
1295         for (md=ob->modifiers.first; md; md=md->next) {
1296                 ModifierData *nmd = modifier_new(md->type);
1297                 BLI_strncpy(nmd->name, md->name, sizeof(nmd->name));
1298                 modifier_copyData(md, nmd);
1299                 BLI_addtail(&obn->modifiers, nmd);
1300         }
1301
1302         obn->prop.first = obn->prop.last = NULL;
1303         copy_properties(&obn->prop, &ob->prop);
1304         
1305         copy_sensors(&obn->sensors, &ob->sensors);
1306         copy_controllers(&obn->controllers, &ob->controllers);
1307         copy_actuators(&obn->actuators, &ob->actuators);
1308         
1309         if(ob->pose) {
1310                 copy_object_pose(obn, ob);
1311                 /* backwards compat... non-armatures can get poses in older files? */
1312                 if(ob->type==OB_ARMATURE)
1313                         armature_rebuild_pose(obn, obn->data);
1314         }
1315         defgroup_copy_list(&obn->defbase, &ob->defbase);
1316         copy_constraints(&obn->constraints, &ob->constraints, TRUE);
1317
1318         obn->mode = 0;
1319         obn->sculpt = NULL;
1320
1321         /* increase user numbers */
1322         id_us_plus((ID *)obn->data);
1323         id_lib_extern((ID *)obn->dup_group);
1324         
1325
1326         for(a=0; a<obn->totcol; a++) id_us_plus((ID *)obn->mat[a]);
1327         
1328         obn->disp.first= obn->disp.last= NULL;
1329         
1330         if(ob->pd){
1331                 obn->pd= MEM_dupallocN(ob->pd);
1332                 if(obn->pd->tex)
1333                         id_us_plus(&(obn->pd->tex->id));
1334                 if(obn->pd->rng)
1335                         obn->pd->rng = MEM_dupallocN(ob->pd->rng);
1336         }
1337         obn->soft= copy_softbody(ob->soft);
1338         obn->bsoft = copy_bulletsoftbody(ob->bsoft);
1339
1340         copy_object_particlesystems(obn, ob);
1341         
1342         obn->derivedDeform = NULL;
1343         obn->derivedFinal = NULL;
1344
1345         obn->gpulamp.first = obn->gpulamp.last = NULL;
1346         obn->pc_ids.first = obn->pc_ids.last = NULL;
1347         
1348         return obn;
1349 }
1350
1351 void expand_local_object(Object *ob)
1352 {
1353         //bActionStrip *strip;
1354         ParticleSystem *psys;
1355         int a;
1356
1357 #if 0 // XXX old animation system
1358         id_lib_extern((ID *)ob->action);
1359         id_lib_extern((ID *)ob->ipo);
1360 #endif // XXX old animation system
1361         id_lib_extern((ID *)ob->data);
1362         id_lib_extern((ID *)ob->dup_group);
1363         
1364         for(a=0; a<ob->totcol; a++) {
1365                 id_lib_extern((ID *)ob->mat[a]);
1366         }
1367 #if 0 // XXX old animation system
1368         for (strip=ob->nlastrips.first; strip; strip=strip->next) {
1369                 id_lib_extern((ID *)strip->act);
1370         }
1371 #endif // XXX old animation system
1372         for(psys=ob->particlesystem.first; psys; psys=psys->next)
1373                 id_lib_extern((ID *)psys->part);
1374 }
1375
1376 void make_local_object(Object *ob)
1377 {
1378         Object *obn;
1379         Scene *sce;
1380         Base *base;
1381         int local=0, lib=0;
1382
1383         /* - only lib users: do nothing
1384                 * - only local users: set flag
1385                 * - mixed: make copy
1386                 */
1387         
1388         if(ob->id.lib==NULL) return;
1389         
1390         ob->proxy= ob->proxy_from= NULL;
1391         
1392         if(ob->id.us==1) {
1393                 ob->id.lib= NULL;
1394                 ob->id.flag= LIB_LOCAL;
1395                 new_id(0, (ID *)ob, 0);
1396
1397         }
1398         else {
1399                 sce= G.main->scene.first;
1400                 while(sce) {
1401                         base= sce->base.first;
1402                         while(base) {
1403                                 if(base->object==ob) {
1404                                         if(sce->id.lib) lib++;
1405                                         else local++;
1406                                         break;
1407                                 }
1408                                 base= base->next;
1409                         }
1410                         sce= sce->id.next;
1411                 }
1412                 
1413                 if(local && lib==0) {
1414                         ob->id.lib= 0;
1415                         ob->id.flag= LIB_LOCAL;
1416                         new_id(0, (ID *)ob, 0);
1417                 }
1418                 else if(local && lib) {
1419                         obn= copy_object(ob);
1420                         obn->id.us= 0;
1421                         
1422                         sce= G.main->scene.first;
1423                         while(sce) {
1424                                 if(sce->id.lib==0) {
1425                                         base= sce->base.first;
1426                                         while(base) {
1427                                                 if(base->object==ob) {
1428                                                         base->object= obn;
1429                                                         obn->id.us++;
1430                                                         ob->id.us--;
1431                                                 }
1432                                                 base= base->next;
1433                                         }
1434                                 }
1435                                 sce= sce->id.next;
1436                         }
1437                 }
1438         }
1439         
1440         expand_local_object(ob);
1441 }
1442
1443 /*
1444  * Returns true if the Object is a from an external blend file (libdata)
1445  */
1446 int object_is_libdata(Object *ob)
1447 {
1448         if (!ob) return 0;
1449         if (ob->proxy) return 0;
1450         if (ob->id.lib) return 1;
1451         return 0;
1452 }
1453
1454 /* Returns true if the Object data is a from an external blend file (libdata) */
1455 int object_data_is_libdata(Object *ob)
1456 {
1457         if(!ob) return 0;
1458         if(ob->proxy && (ob->data==NULL || ((ID *)ob->data)->lib==NULL)) return 0;
1459         if(ob->id.lib) return 1;
1460         if(ob->data==NULL) return 0;
1461         if(((ID *)ob->data)->lib) return 1;
1462
1463         return 0;
1464 }
1465
1466 /* *************** PROXY **************** */
1467
1468 /* when you make proxy, ensure the exposed layers are extern */
1469 static void armature_set_id_extern(Object *ob)
1470 {
1471         bArmature *arm= ob->data;
1472         bPoseChannel *pchan;
1473         int lay= arm->layer_protected;
1474         
1475         for (pchan = ob->pose->chanbase.first; pchan; pchan=pchan->next) {
1476                 if(!(pchan->bone->layer & lay))
1477                         id_lib_extern((ID *)pchan->custom);
1478         }
1479                         
1480 }
1481
1482 void object_copy_proxy_drivers(Object *ob, Object *target)
1483 {
1484         if ((target->adt) && (target->adt->drivers.first)) {
1485                 FCurve *fcu;
1486                 
1487                 /* add new animdata block */
1488                 if(!ob->adt)
1489                         ob->adt= BKE_id_add_animdata(&ob->id);
1490                 
1491                 /* make a copy of all the drivers (for now), then correct any links that need fixing */
1492                 free_fcurves(&ob->adt->drivers);
1493                 copy_fcurves(&ob->adt->drivers, &target->adt->drivers);
1494                 
1495                 for (fcu= ob->adt->drivers.first; fcu; fcu= fcu->next) {
1496                         ChannelDriver *driver= fcu->driver;
1497                         DriverVar *dvar;
1498                         
1499                         for (dvar= driver->variables.first; dvar; dvar= dvar->next) {
1500                                 /* all drivers */
1501                                 DRIVER_TARGETS_LOOPER(dvar) 
1502                                 {
1503                                         if(dtar->id) {
1504                                                 if ((Object *)dtar->id == target)
1505                                                         dtar->id= (ID *)ob;
1506                                                 else {
1507                                                         /* only on local objects because this causes indirect links a -> b -> c,blend to point directly to a.blend
1508                                                          * when a.blend has a proxy thats linked into c.blend  */
1509                                                         if(ob->id.lib==NULL)
1510                                                                 id_lib_extern((ID *)dtar->id);
1511                                                 }
1512                                         }
1513                                 }
1514                                 DRIVER_TARGETS_LOOPER_END
1515                         }
1516                 }
1517         }
1518 }
1519
1520 /* proxy rule: lib_object->proxy_from == the one we borrow from, set temporally while object_update */
1521 /*             local_object->proxy == pointer to library object, saved in files and read */
1522 /*             local_object->proxy_group == pointer to group dupli-object, saved in files and read */
1523
1524 void object_make_proxy(Object *ob, Object *target, Object *gob)
1525 {
1526         /* paranoia checks */
1527         if(ob->id.lib || target->id.lib==NULL) {
1528                 printf("cannot make proxy\n");
1529                 return;
1530         }
1531         
1532         ob->proxy= target;
1533         ob->proxy_group= gob;
1534         id_lib_extern(&target->id);
1535         
1536         ob->recalc= target->recalc= OB_RECALC_ALL;
1537         
1538         /* copy transform */
1539         if(gob) {
1540                 VECCOPY(ob->loc, gob->loc);
1541                 VECCOPY(ob->rot, gob->rot);
1542                 VECCOPY(ob->size, gob->size);
1543                 
1544                 group_tag_recalc(gob->dup_group);
1545         }
1546         else {
1547                 VECCOPY(ob->loc, target->loc);
1548                 VECCOPY(ob->rot, target->rot);
1549                 VECCOPY(ob->size, target->size);
1550         }
1551         
1552         ob->parent= target->parent;     /* libdata */
1553         copy_m4_m4(ob->parentinv, target->parentinv);
1554         
1555         /* copy animdata stuff - drivers only for now... */
1556         object_copy_proxy_drivers(ob, target);
1557
1558         /* skip constraints? */
1559         // FIXME: this is considered by many as a bug
1560         
1561         /* set object type and link to data */
1562         ob->type= target->type;
1563         ob->data= target->data;
1564         id_us_plus((ID *)ob->data);             /* ensures lib data becomes LIB_EXTERN */
1565         
1566         /* copy material and index information */
1567         ob->actcol= ob->totcol= 0;
1568         if(ob->mat) MEM_freeN(ob->mat);
1569         if(ob->matbits) MEM_freeN(ob->matbits);
1570         ob->mat = NULL;
1571         ob->matbits= NULL;
1572         if ((target->totcol) && (target->mat) && ELEM5(ob->type, OB_MESH, OB_CURVE, OB_SURF, OB_FONT, OB_MBALL)) { //XXX OB_SUPPORT_MATERIAL
1573                 int i;
1574                 ob->colbits = target->colbits;
1575                 
1576                 ob->actcol= target->actcol;
1577                 ob->totcol= target->totcol;
1578                 
1579                 ob->mat = MEM_dupallocN(target->mat);
1580                 ob->matbits = MEM_dupallocN(target->matbits);
1581                 for(i=0; i<target->totcol; i++) {
1582                         /* dont need to run test_object_materials since we know this object is new and not used elsewhere */
1583                         id_us_plus((ID *)ob->mat[i]); 
1584                 }
1585         }
1586         
1587         /* type conversions */
1588         if(target->type == OB_ARMATURE) {
1589                 copy_object_pose(ob, target);   /* data copy, object pointers in constraints */
1590                 rest_pose(ob->pose);                    /* clear all transforms in channels */
1591                 armature_rebuild_pose(ob, ob->data);    /* set all internal links */
1592                 
1593                 armature_set_id_extern(ob);
1594         }
1595         
1596         /* copy drawtype info */
1597         ob->dt= target->dt;
1598 }
1599
1600
1601 /* *************** CALC ****************** */
1602
1603 /* there is also a timing calculation in drawobject() */
1604
1605 int no_speed_curve= 0;
1606
1607 void disable_speed_curve(int val)
1608 {
1609         no_speed_curve= val;
1610 }
1611
1612 // XXX THIS CRUFT NEEDS SERIOUS RECODING ASAP!
1613 /* ob can be NULL */
1614 float bsystem_time(struct Scene *scene, Object *ob, float cfra, float ofs)
1615 {
1616         /* returns float ( see BKE_curframe in scene.c) */
1617         cfra += scene->r.subframe;
1618         
1619         /* global time */
1620         if (scene)
1621                 cfra*= scene->r.framelen;       
1622         
1623 #if 0 // XXX old animation system
1624         if (ob) {
1625                 /* ofset frames */
1626                 if ((ob->ipoflag & OB_OFFS_PARENT) && (ob->partype & PARSLOW)==0) 
1627                         cfra-= give_timeoffset(ob);
1628         }
1629 #endif // XXX old animation system
1630         
1631         cfra-= ofs;
1632
1633         return cfra;
1634 }
1635
1636 void object_scale_to_mat3(Object *ob, float mat[][3])
1637 {
1638         float vec[3];
1639         
1640         vec[0]= ob->size[0]+ob->dsize[0];
1641         vec[1]= ob->size[1]+ob->dsize[1];
1642         vec[2]= ob->size[2]+ob->dsize[2];
1643         size_to_mat3( mat,vec);
1644 }
1645
1646 // TODO: this should take rotation orders into account later...
1647 void object_rot_to_mat3(Object *ob, float mat[][3])
1648 {
1649         float rmat[3][3], dmat[3][3];
1650         
1651         /* initialise the delta-rotation matrix, which will get (pre)multiplied 
1652          * with the rotation matrix to yield the appropriate rotation
1653          */
1654         unit_m3(dmat);
1655         
1656         /* rotations may either be quats, eulers (with various rotation orders), or axis-angle */
1657         if (ob->rotmode > 0) {
1658                 /* euler rotations (will cause gimble lock, but this can be alleviated a bit with rotation orders) */
1659                 eulO_to_mat3( rmat,ob->rot, ob->rotmode);
1660                 eulO_to_mat3( dmat,ob->drot, ob->rotmode);
1661         }
1662         else if (ob->rotmode == ROT_MODE_AXISANGLE) {
1663                 /* axis-angle -  not really that great for 3D-changing orientations */
1664                 axis_angle_to_mat3( rmat,ob->rotAxis, ob->rotAngle);
1665                 axis_angle_to_mat3( dmat,ob->drotAxis, ob->drotAngle);
1666         }
1667         else {
1668                 /* quats are normalised before use to eliminate scaling issues */
1669                 normalize_qt(ob->quat);
1670                 quat_to_mat3( rmat,ob->quat);
1671                 quat_to_mat3( dmat,ob->dquat);
1672         }
1673         
1674         /* combine these rotations */
1675         // XXX is this correct? if errors, change the order of multiplication...
1676         mul_m3_m3m3(mat, dmat, rmat);
1677 }
1678
1679 void object_mat3_to_rot(Object *ob, float mat[][3], int use_compat)
1680 {
1681         if (ob->rotmode == ROT_MODE_QUAT)
1682                 mat3_to_quat(ob->quat, mat);
1683         else if (ob->rotmode == ROT_MODE_AXISANGLE)
1684                 mat3_to_axis_angle(ob->rotAxis, &ob->rotAngle, mat);
1685         else {
1686                 if(use_compat) {
1687                         float eul[3];
1688                         VECCOPY(eul, ob->rot);
1689                         mat3_to_compatible_eulO(ob->rot, eul, ob->rotmode, mat);
1690                 }
1691                 else
1692                         mat3_to_eulO(ob->rot, ob->rotmode, mat);
1693         }
1694 }
1695
1696 /* see pchan_apply_mat4() for the equivalent 'pchan' function */
1697 void object_apply_mat4(Object *ob, float mat[][4])
1698 {
1699         float mat3[3][3];
1700         VECCOPY(ob->loc, mat[3]);
1701         mat4_to_size(ob->size, mat);
1702         copy_m3_m4(mat3, mat);
1703         object_mat3_to_rot(ob, mat3, 0);
1704 }
1705
1706 void object_to_mat3(Object *ob, float mat[][3]) /* no parent */
1707 {
1708         float smat[3][3];
1709         float rmat[3][3];
1710         /*float q1[4];*/
1711         
1712         /* size */
1713         object_scale_to_mat3(ob, smat);
1714
1715         /* rot */
1716         object_rot_to_mat3(ob, rmat);
1717         mul_m3_m3m3(mat, rmat, smat);
1718 }
1719
1720 void object_to_mat4(Object *ob, float mat[][4])
1721 {
1722         float tmat[3][3];
1723         
1724         object_to_mat3(ob, tmat);
1725         
1726         copy_m4_m3(mat, tmat);
1727
1728         add_v3_v3v3(mat[3], ob->loc, ob->dloc);
1729 }
1730
1731 int enable_cu_speed= 1;
1732
1733 static void ob_parcurve(Scene *scene, Object *ob, Object *par, float mat[][4])
1734 {
1735         Curve *cu;
1736         float q[4], vec[4], dir[3], quat[4], radius, x1, ctime;
1737         float timeoffs = 0.0, sf_orig = 0.0;
1738         
1739         unit_m4(mat);
1740         
1741         cu= par->data;
1742         if(cu->path==NULL || cu->path->data==NULL) /* only happens on reload file, but violates depsgraph still... fix! */
1743                 makeDispListCurveTypes(scene, par, 0);
1744         if(cu->path==NULL) return;
1745         
1746         /* exception, timeoffset is regarded as distance offset */
1747         if(cu->flag & CU_OFFS_PATHDIST) {
1748                 timeoffs = give_timeoffset(ob);
1749                 SWAP(float, sf_orig, ob->sf);
1750         }
1751         
1752         /* catch exceptions: feature for nla stride editing */
1753         if(ob->ipoflag & OB_DISABLE_PATH) {
1754                 ctime= 0.0f;
1755         }
1756         /* catch exceptions: curve paths used as a duplicator */
1757         else if(enable_cu_speed) {
1758                 /* ctime is now a proper var setting of Curve which gets set by Animato like any other var that's animated,
1759                  * but this will only work if it actually is animated... 
1760                  *
1761                  * we divide the curvetime calculated in the previous step by the length of the path, to get a time
1762                  * factor, which then gets clamped to lie within 0.0 - 1.0 range
1763                  */
1764                 ctime= cu->ctime / cu->pathlen;
1765                 CLAMP(ctime, 0.0, 1.0);
1766         }
1767         else {
1768                 ctime= scene->r.cfra - give_timeoffset(ob);
1769                 ctime /= cu->pathlen;
1770                 
1771                 CLAMP(ctime, 0.0, 1.0);
1772         }
1773         
1774         /* time calculus is correct, now apply distance offset */
1775         if(cu->flag & CU_OFFS_PATHDIST) {
1776                 ctime += timeoffs/cu->path->totdist;
1777
1778                 /* restore */
1779                 SWAP(float, sf_orig, ob->sf);
1780         }
1781         
1782         
1783         /* vec: 4 items! */
1784          if( where_on_path(par, ctime, vec, dir, NULL, &radius, NULL) ) {
1785
1786                 if(cu->flag & CU_FOLLOW) {
1787                         vec_to_quat( quat,dir, ob->trackflag, ob->upflag);
1788                         
1789                         /* the tilt */
1790                         normalize_v3(dir);
1791                         q[0]= (float)cos(0.5*vec[3]);
1792                         x1= (float)sin(0.5*vec[3]);
1793                         q[1]= -x1*dir[0];
1794                         q[2]= -x1*dir[1];
1795                         q[3]= -x1*dir[2];
1796                         mul_qt_qtqt(quat, q, quat);
1797                         
1798                         quat_to_mat4( mat,quat);
1799                 }
1800                 
1801                 if(cu->flag & CU_PATH_RADIUS) {
1802                         float tmat[4][4], rmat[4][4];
1803                         scale_m4_fl(tmat, radius);
1804                         mul_m4_m4m4(rmat, mat, tmat);
1805                         copy_m4_m4(mat, rmat);
1806                 }
1807
1808                 VECCOPY(mat[3], vec);
1809                 
1810         }
1811 }
1812
1813 static void ob_parbone(Object *ob, Object *par, float mat[][4])
1814 {       
1815         bPoseChannel *pchan;
1816         float vec[3];
1817         
1818         if (par->type!=OB_ARMATURE) {
1819                 unit_m4(mat);
1820                 return;
1821         }
1822         
1823         /* Make sure the bone is still valid */
1824         pchan= get_pose_channel(par->pose, ob->parsubstr);
1825         if (!pchan){
1826                 printf ("Object %s with Bone parent: bone %s doesn't exist\n", ob->id.name+2, ob->parsubstr);
1827                 unit_m4(mat);
1828                 return;
1829         }
1830
1831         /* get bone transform */
1832         copy_m4_m4(mat, pchan->pose_mat);
1833
1834         /* but for backwards compatibility, the child has to move to the tail */
1835         VECCOPY(vec, mat[1]);
1836         mul_v3_fl(vec, pchan->bone->length);
1837         add_v3_v3(mat[3], vec);
1838 }
1839
1840 static void give_parvert(Object *par, int nr, float *vec)
1841 {
1842         BMEditMesh *em;
1843         int a, count;
1844         
1845         vec[0]=vec[1]=vec[2]= 0.0f;
1846         
1847         if(par->type==OB_MESH) {
1848                 Mesh *me= par->data;
1849                 em = me->edit_btmesh;
1850
1851                 if(em) {
1852                         BMVert *eve;
1853                         BMIter iter;
1854
1855                         BM_ITER(eve, &iter, em->bm, BM_VERTS_OF_MESH, NULL) {
1856                                 int *keyindex = CustomData_bmesh_get(&em->bm->vdata, eve->head.data, CD_SHAPE_KEYINDEX);
1857                                 
1858                                 if(keyindex && *keyindex==nr) {
1859                                         memcpy(vec, eve->co, sizeof(float)*3);
1860                                         break;
1861                                 }
1862                         }
1863                 }
1864                 else {
1865                         DerivedMesh *dm = par->derivedFinal;
1866                         
1867                         if(dm) {
1868                                 MVert *mvert= dm->getVertArray(dm);
1869                                 int *index = (int *)dm->getVertDataArray(dm, CD_ORIGINDEX);
1870                                 int i, count = 0, vindex, numVerts = dm->getNumVerts(dm);
1871
1872                                 /* get the average of all verts with (original index == nr) */
1873                                 for(i = 0; i < numVerts; i++) {
1874                                         vindex= (index)? index[i]: i;
1875
1876                                         if(vindex == nr) {
1877                                                 add_v3_v3(vec, mvert[i].co);
1878                                                 count++;
1879                                         }
1880                                 }
1881
1882                                 if (count==0) {
1883                                         /* keep as 0,0,0 */
1884                                 } else if(count > 0) {
1885                                         mul_v3_fl(vec, 1.0f / count);
1886                                 } else {
1887                                         /* use first index if its out of range */
1888                                         dm->getVertCo(dm, 0, vec);
1889                                 }
1890                         }
1891                 }
1892         }
1893         else if (ELEM(par->type, OB_CURVE, OB_SURF)) {
1894                 Nurb *nu;
1895                 Curve *cu;
1896                 BPoint *bp;
1897                 BezTriple *bezt;
1898                 int found= 0;
1899                 
1900                 cu= par->data;
1901                 if(cu->editnurb)
1902                         nu= cu->editnurb->first;
1903                 else
1904                         nu= cu->nurb.first;
1905                 
1906                 count= 0;
1907                 while(nu && !found) {
1908                         if(nu->type == CU_BEZIER) {
1909                                 bezt= nu->bezt;
1910                                 a= nu->pntsu;
1911                                 while(a--) {
1912                                         if(count==nr) {
1913                                                 found= 1;
1914                                                 VECCOPY(vec, bezt->vec[1]);
1915                                                 break;
1916                                         }
1917                                         count++;
1918                                         bezt++;
1919                                 }
1920                         }
1921                         else {
1922                                 bp= nu->bp;
1923                                 a= nu->pntsu*nu->pntsv;
1924                                 while(a--) {
1925                                         if(count==nr) {
1926                                                 found= 1;
1927                                                 memcpy(vec, bp->vec, sizeof(float)*3);
1928                                                 break;
1929                                         }
1930                                         count++;
1931                                         bp++;
1932                                 }
1933                         }
1934                         nu= nu->next;
1935                 }
1936
1937         }
1938         else if(par->type==OB_LATTICE) {
1939                 Lattice *latt= par->data;
1940                 BPoint *bp;
1941                 DispList *dl = find_displist(&par->disp, DL_VERTS);
1942                 float *co = dl?dl->verts:NULL;
1943                 
1944                 if(latt->editlatt) latt= latt->editlatt;
1945                 
1946                 a= latt->pntsu*latt->pntsv*latt->pntsw;
1947                 count= 0;
1948                 bp= latt->def;
1949                 while(a--) {
1950                         if(count==nr) {
1951                                 if(co)
1952                                         memcpy(vec, co, 3*sizeof(float));
1953                                 else
1954                                         memcpy(vec, bp->vec, 3*sizeof(float));
1955                                 break;
1956                         }
1957                         count++;
1958                         if(co) co+= 3;
1959                         else bp++;
1960                 }
1961         }
1962 }
1963
1964 static void ob_parvert3(Object *ob, Object *par, float mat[][4])
1965 {
1966         float cmat[3][3], v1[3], v2[3], v3[3], q[4];
1967
1968         /* in local ob space */
1969         unit_m4(mat);
1970         
1971         if (ELEM4(par->type, OB_MESH, OB_SURF, OB_CURVE, OB_LATTICE)) {
1972                 
1973                 give_parvert(par, ob->par1, v1);
1974                 give_parvert(par, ob->par2, v2);
1975                 give_parvert(par, ob->par3, v3);
1976                                 
1977                 tri_to_quat( q,v1, v2, v3);
1978                 quat_to_mat3( cmat,q);
1979                 copy_m4_m3(mat, cmat);
1980                 
1981                 if(ob->type==OB_CURVE) {
1982                         VECCOPY(mat[3], v1);
1983                 }
1984                 else {
1985                         add_v3_v3v3(mat[3], v1, v2);
1986                         add_v3_v3(mat[3], v3);
1987                         mul_v3_fl(mat[3], 0.3333333f);
1988                 }
1989         }
1990 }
1991
1992 // XXX what the hell is this?
1993 static int no_parent_ipo=0;
1994 void set_no_parent_ipo(int val)
1995 {
1996         no_parent_ipo= val;
1997 }
1998
1999 void where_is_object_time(Scene *scene, Object *ob, float ctime)
2000 {
2001         float *fp1, *fp2, slowmat[4][4] = MAT4_UNITY;
2002         float stime=ctime, fac1, fac2;
2003         int a;
2004         
2005         /* new version: correct parent+vertexparent and track+parent */
2006         /* this one only calculates direct attached parent and track */
2007         /* is faster, but should keep track of timeoffs */
2008         
2009         if(ob==NULL) return;
2010         
2011         /* execute drivers only, as animation has already been done */
2012         BKE_animsys_evaluate_animdata(&ob->id, ob->adt, ctime, ADT_RECALC_DRIVERS);
2013         
2014         if(ob->parent) {
2015                 Object *par= ob->parent;
2016                 
2017                 // XXX depreceated - animsys
2018                 if(ob->ipoflag & OB_OFFS_PARENT) ctime-= give_timeoffset(ob);
2019                 
2020                 /* hurms, code below conflicts with depgraph... (ton) */
2021                 /* and even worse, it gives bad effects for NLA stride too (try ctime != par->ctime, with MBlur) */
2022                 if(no_parent_ipo==0 && stime != par->ctime) {
2023                         // only for ipo systems? 
2024                         Object tmp= *par;
2025                         
2026                         if(par->proxy_from);    // was a copied matrix, no where_is! bad...
2027                         else where_is_object_time(scene, par, ctime);
2028
2029                         solve_parenting(scene, ob, par, ob->obmat, slowmat, 0);
2030
2031                         *par= tmp;
2032                 }
2033                 else
2034                         solve_parenting(scene, ob, par, ob->obmat, slowmat, 0);
2035                 
2036                 if(ob->partype & PARSLOW) {
2037                         // include framerate
2038                         fac1= ( 1.0f / (1.0f + (float)fabs(give_timeoffset(ob))) );
2039                         if(fac1 >= 1.0f) return;
2040                         fac2= 1.0f-fac1;
2041                         
2042                         fp1= ob->obmat[0];
2043                         fp2= slowmat[0];
2044                         for(a=0; a<16; a++, fp1++, fp2++) {
2045                                 fp1[0]= fac1*fp1[0] + fac2*fp2[0];
2046                         }
2047                 }
2048         }
2049         else {
2050                 object_to_mat4(ob, ob->obmat);
2051         }
2052
2053         /* solve constraints */
2054         if (ob->constraints.first && !(ob->flag & OB_NO_CONSTRAINTS)) {
2055                 bConstraintOb *cob;
2056                 
2057                 cob= constraints_make_evalob(scene, ob, NULL, CONSTRAINT_OBTYPE_OBJECT);
2058                 
2059                 /* constraints need ctime, not stime. Some call where_is_object_time and bsystem_time */
2060                 solve_constraints (&ob->constraints, cob, ctime);
2061                 
2062                 constraints_clear_evalob(cob);
2063         }
2064         
2065         /* set negative scale flag in object */
2066         if(is_negative_m4(ob->obmat))   ob->transflag |= OB_NEG_SCALE;
2067         else                                                    ob->transflag &= ~OB_NEG_SCALE;
2068 }
2069
2070 static void solve_parenting (Scene *scene, Object *ob, Object *par, float obmat[][4], float slowmat[][4], int simul)
2071 {
2072         float totmat[4][4];
2073         float tmat[4][4];
2074         float locmat[4][4];
2075         float vec[3];
2076         int ok;
2077         
2078         object_to_mat4(ob, locmat);
2079         
2080         if(ob->partype & PARSLOW) copy_m4_m4(slowmat, obmat);
2081
2082         switch(ob->partype & PARTYPE) {
2083         case PAROBJECT:
2084                 ok= 0;
2085                 if(par->type==OB_CURVE) {
2086                         if( ((Curve *)par->data)->flag & CU_PATH ) {
2087                                 ob_parcurve(scene, ob, par, tmat);
2088                                 ok= 1;
2089                         }
2090                 }
2091                 
2092                 if(ok) mul_serie_m4(totmat, par->obmat, tmat, 
2093                         NULL, NULL, NULL, NULL, NULL, NULL);
2094                 else copy_m4_m4(totmat, par->obmat);
2095                 
2096                 break;
2097         case PARBONE:
2098                 ob_parbone(ob, par, tmat);
2099                 mul_serie_m4(totmat, par->obmat, tmat,         
2100                         NULL, NULL, NULL, NULL, NULL, NULL);
2101                 break;
2102                 
2103         case PARVERT1:
2104                 unit_m4(totmat);
2105                 if (simul){
2106                         VECCOPY(totmat[3], par->obmat[3]);
2107                 }
2108                 else{
2109                         give_parvert(par, ob->par1, vec);
2110                         mul_v3_m4v3(totmat[3], par->obmat, vec);
2111                 }
2112                 break;
2113         case PARVERT3:
2114                 ob_parvert3(ob, par, tmat);
2115                 
2116                 mul_serie_m4(totmat, par->obmat, tmat,         
2117                         NULL, NULL, NULL, NULL, NULL, NULL);
2118                 break;
2119                 
2120         case PARSKEL:
2121                 copy_m4_m4(totmat, par->obmat);
2122                 break;
2123         }
2124         
2125         // total 
2126         mul_serie_m4(tmat, totmat, ob->parentinv,         
2127                 NULL, NULL, NULL, NULL, NULL, NULL);
2128         mul_serie_m4(obmat, tmat, locmat,         
2129                 NULL, NULL, NULL, NULL, NULL, NULL);
2130         
2131         if (simul) {
2132
2133         }
2134         else{
2135                 // external usable originmat 
2136                 copy_m3_m4(originmat, tmat);
2137                 
2138                 // origin, voor help line
2139                 if( (ob->partype & 15)==PARSKEL ) {
2140                         VECCOPY(ob->orig, par->obmat[3]);
2141                 }
2142                 else {
2143                         VECCOPY(ob->orig, totmat[3]);
2144                 }
2145         }
2146
2147 }
2148
2149 void where_is_object(struct Scene *scene, Object *ob)
2150 {
2151         where_is_object_time(scene, ob, (float)scene->r.cfra);
2152 }
2153
2154
2155 void where_is_object_simul(Scene *scene, Object *ob)
2156 /* was written for the old game engine (until 2.04) */
2157 /* It seems that this function is only called
2158 for a lamp that is the child of another object */
2159 {
2160         Object *par;
2161         //Ipo *ipo;
2162         float *fp1, *fp2;
2163         float slowmat[4][4];
2164         float fac1, fac2;
2165         int a;
2166         
2167         /* NO TIMEOFFS */
2168         if(ob->parent) {
2169                 par= ob->parent;
2170                 
2171                 solve_parenting(scene, ob, par, ob->obmat, slowmat, 1);
2172
2173                 if(ob->partype & PARSLOW) {
2174
2175                         fac1= (float)(1.0/(1.0+ fabs(give_timeoffset(ob))));
2176                         fac2= 1.0f-fac1;
2177                         fp1= ob->obmat[0];
2178                         fp2= slowmat[0];
2179                         for(a=0; a<16; a++, fp1++, fp2++) {
2180                                 fp1[0]= fac1*fp1[0] + fac2*fp2[0];
2181                         }
2182                 }
2183                 
2184         }
2185         else {
2186                 object_to_mat4(ob, ob->obmat);
2187         }
2188         
2189         /* solve constraints */
2190         if (ob->constraints.first) {
2191                 bConstraintOb *cob;
2192                 
2193                 cob= constraints_make_evalob(scene, ob, NULL, CONSTRAINT_OBTYPE_OBJECT);
2194                 solve_constraints(&ob->constraints, cob, (float)scene->r.cfra);
2195                 constraints_clear_evalob(cob);
2196         }
2197 }
2198
2199 /* for calculation of the inverse parent transform, only used for editor */
2200 void what_does_parent(Scene *scene, Object *ob, Object *workob)
2201 {
2202         clear_workob(workob);
2203         
2204         unit_m4(workob->obmat);
2205         unit_m4(workob->parentinv);
2206         unit_m4(workob->constinv);
2207         workob->parent= ob->parent;
2208
2209         workob->trackflag= ob->trackflag;
2210         workob->upflag= ob->upflag;
2211         
2212         workob->partype= ob->partype;
2213         workob->par1= ob->par1;
2214         workob->par2= ob->par2;
2215         workob->par3= ob->par3;
2216
2217         workob->constraints.first = ob->constraints.first;
2218         workob->constraints.last = ob->constraints.last;
2219
2220         strcpy(workob->parsubstr, ob->parsubstr); 
2221
2222         where_is_object(scene, workob);
2223 }
2224
2225 BoundBox *unit_boundbox()
2226 {
2227         BoundBox *bb;
2228         float min[3] = {-1.0f,-1.0f,-1.0f}, max[3] = {-1.0f,-1.0f,-1.0f};
2229
2230         bb= MEM_callocN(sizeof(BoundBox), "bb");
2231         boundbox_set_from_min_max(bb, min, max);
2232         
2233         return bb;
2234 }
2235
2236 void boundbox_set_from_min_max(BoundBox *bb, float min[3], float max[3])
2237 {
2238         bb->vec[0][0]=bb->vec[1][0]=bb->vec[2][0]=bb->vec[3][0]= min[0];
2239         bb->vec[4][0]=bb->vec[5][0]=bb->vec[6][0]=bb->vec[7][0]= max[0];
2240         
2241         bb->vec[0][1]=bb->vec[1][1]=bb->vec[4][1]=bb->vec[5][1]= min[1];
2242         bb->vec[2][1]=bb->vec[3][1]=bb->vec[6][1]=bb->vec[7][1]= max[1];
2243
2244         bb->vec[0][2]=bb->vec[3][2]=bb->vec[4][2]=bb->vec[7][2]= min[2];
2245         bb->vec[1][2]=bb->vec[2][2]=bb->vec[5][2]=bb->vec[6][2]= max[2];
2246 }
2247
2248 BoundBox *object_get_boundbox(Object *ob)
2249 {
2250         BoundBox *bb= NULL;
2251         
2252         if(ob->type==OB_MESH) {
2253                 bb = mesh_get_bb(ob);
2254         }
2255         else if (ELEM3(ob->type, OB_CURVE, OB_SURF, OB_FONT)) {
2256                 bb= ob->bb ? ob->bb : ( (Curve *)ob->data )->bb;
2257         }
2258         else if(ob->type==OB_MBALL) {
2259                 bb= ob->bb;
2260         }
2261         return bb;
2262 }
2263
2264 /* used to temporally disable/enable boundbox */
2265 void object_boundbox_flag(Object *ob, int flag, int set)
2266 {
2267         BoundBox *bb= object_get_boundbox(ob);
2268         if(bb) {
2269                 if(set) bb->flag |= flag;
2270                 else bb->flag &= ~flag;
2271         }
2272 }
2273
2274 void object_get_dimensions(Object *ob, float *value)
2275 {
2276         BoundBox *bb = NULL;
2277         
2278         bb= object_get_boundbox(ob);
2279         if (bb) {
2280                 float scale[3];
2281                 
2282                 mat4_to_size( scale,ob->obmat);
2283                 
2284                 value[0] = fabs(scale[0]) * (bb->vec[4][0] - bb->vec[0][0]);
2285                 value[1] = fabs(scale[1]) * (bb->vec[2][1] - bb->vec[0][1]);
2286                 value[2] = fabs(scale[2]) * (bb->vec[1][2] - bb->vec[0][2]);
2287         } else {
2288                 value[0] = value[1] = value[2] = 0.f;
2289         }
2290 }
2291
2292 void object_set_dimensions(Object *ob, const float *value)
2293 {
2294         BoundBox *bb = NULL;
2295         
2296         bb= object_get_boundbox(ob);
2297         if (bb) {
2298                 float scale[3], len[3];
2299                 
2300                 mat4_to_size( scale,ob->obmat);
2301                 
2302                 len[0] = bb->vec[4][0] - bb->vec[0][0];
2303                 len[1] = bb->vec[2][1] - bb->vec[0][1];
2304                 len[2] = bb->vec[1][2] - bb->vec[0][2];
2305                 
2306                 if (len[0] > 0.f) ob->size[0] = value[0] / len[0];
2307                 if (len[1] > 0.f) ob->size[1] = value[1] / len[1];
2308                 if (len[2] > 0.f) ob->size[2] = value[2] / len[2];
2309         }
2310 }
2311
2312 void minmax_object(Object *ob, float *min, float *max)
2313 {
2314         BoundBox bb;
2315         Mesh *me;
2316         Curve *cu;
2317         float vec[3];
2318         int a;
2319         
2320         switch(ob->type) {
2321                 
2322         case OB_CURVE:
2323         case OB_FONT:
2324         case OB_SURF:
2325                 cu= ob->data;
2326                 
2327                 if(cu->bb==NULL) tex_space_curve(cu);
2328                 bb= *(cu->bb);
2329                 
2330                 for(a=0; a<8; a++) {
2331                         mul_m4_v3(ob->obmat, bb.vec[a]);
2332                         DO_MINMAX(bb.vec[a], min, max);
2333                 }
2334                 break;
2335         case OB_ARMATURE:
2336                 if(ob->pose) {
2337                         bPoseChannel *pchan;
2338                         for(pchan= ob->pose->chanbase.first; pchan; pchan= pchan->next) {
2339                                 VECCOPY(vec, pchan->pose_head);
2340                                 mul_m4_v3(ob->obmat, vec);
2341                                 DO_MINMAX(vec, min, max);
2342                                 VECCOPY(vec, pchan->pose_tail);
2343                                 mul_m4_v3(ob->obmat, vec);
2344                                 DO_MINMAX(vec, min, max);
2345                         }
2346                         break;
2347                 }
2348                 /* no break, get_mesh will give NULL and it passes on to default */
2349         case OB_MESH:
2350                 me= get_mesh(ob);
2351                 
2352                 if(me) {
2353                         bb = *mesh_get_bb(ob);
2354                         
2355                         for(a=0; a<8; a++) {
2356                                 mul_m4_v3(ob->obmat, bb.vec[a]);
2357                                 DO_MINMAX(bb.vec[a], min, max);
2358                         }
2359                 }
2360                 if(min[0] < max[0] ) break;
2361                 
2362                 /* else here no break!!!, mesh can be zero sized */
2363                 
2364         default:
2365                 DO_MINMAX(ob->obmat[3], min, max);
2366
2367                 copy_v3_v3(vec, ob->obmat[3]);
2368                 add_v3_v3(vec, ob->size);
2369                 DO_MINMAX(vec, min, max);
2370
2371                 copy_v3_v3(vec, ob->obmat[3]);
2372                 sub_v3_v3(vec, ob->size);
2373                 DO_MINMAX(vec, min, max);
2374                 break;
2375         }
2376 }
2377
2378 int minmax_object_duplis(Scene *scene, Object *ob, float *min, float *max)
2379 {
2380         int ok= 0;
2381         if ((ob->transflag & OB_DUPLI)==0) {
2382                 return ok;
2383         } else {
2384                 ListBase *lb;
2385                 DupliObject *dob;
2386                 
2387                 lb= object_duplilist(scene, ob);
2388                 for(dob= lb->first; dob; dob= dob->next) {
2389                         if(dob->no_draw == 0) {
2390                                 BoundBox *bb= object_get_boundbox(dob->ob);
2391
2392                                 if(bb) {
2393                                         int i;
2394                                         for(i=0; i<8; i++) {
2395                                                 float vec[3];
2396                                                 mul_v3_m4v3(vec, dob->mat, bb->vec[i]);
2397                                                 DO_MINMAX(vec, min, max);
2398                                         }
2399
2400                                         ok= 1;
2401                                 }
2402                         }
2403                 }
2404                 free_object_duplilist(lb);      /* does restore */
2405         }
2406
2407         return ok;
2408 }
2409
2410 /* copied from DNA_object_types.h */
2411 typedef struct ObTfmBack {
2412         float loc[3], dloc[3], orig[3];
2413         float size[3], dsize[3];        /* scale and delta scale */
2414         float rot[3], drot[3];          /* euler rotation */
2415         float quat[4], dquat[4];        /* quaternion rotation */
2416         float rotAxis[3], drotAxis[3];  /* axis angle rotation - axis part */
2417         float rotAngle, drotAngle;      /* axis angle rotation - angle part */
2418         float obmat[4][4];              /* final worldspace matrix with constraints & animsys applied */
2419         float parentinv[4][4]; /* inverse result of parent, so that object doesn't 'stick' to parent */
2420         float constinv[4][4]; /* inverse result of constraints. doesn't include effect of parent or object local transform */
2421         float imat[4][4];       /* inverse matrix of 'obmat' for during render, old game engine, temporally: ipokeys of transform  */
2422 } ObTfmBack;
2423
2424 void *object_tfm_backup(Object *ob)
2425 {
2426         ObTfmBack *obtfm= MEM_mallocN(sizeof(ObTfmBack), "ObTfmBack");
2427         copy_v3_v3(obtfm->loc, ob->loc);
2428         copy_v3_v3(obtfm->dloc, ob->dloc);
2429         copy_v3_v3(obtfm->orig, ob->orig);
2430         copy_v3_v3(obtfm->size, ob->size);
2431         copy_v3_v3(obtfm->dsize, ob->dsize);
2432         copy_v3_v3(obtfm->rot, ob->rot);
2433         copy_v3_v3(obtfm->drot, ob->drot);
2434         copy_qt_qt(obtfm->quat, ob->quat);
2435         copy_qt_qt(obtfm->dquat, ob->dquat);
2436         copy_v3_v3(obtfm->rotAxis, ob->rotAxis);
2437         copy_v3_v3(obtfm->drotAxis, ob->drotAxis);
2438         obtfm->rotAngle= ob->rotAngle;
2439         obtfm->drotAngle= ob->drotAngle;
2440         copy_m4_m4(obtfm->obmat, ob->obmat);
2441         copy_m4_m4(obtfm->parentinv, ob->parentinv);
2442         copy_m4_m4(obtfm->constinv, ob->constinv);
2443         copy_m4_m4(obtfm->imat, ob->imat);
2444
2445         return (void *)obtfm;
2446 }
2447
2448 void object_tfm_restore(Object *ob, void *obtfm_pt)
2449 {
2450         ObTfmBack *obtfm= (ObTfmBack *)obtfm_pt;
2451         copy_v3_v3(ob->loc, obtfm->loc);
2452         copy_v3_v3(ob->dloc, obtfm->dloc);
2453         copy_v3_v3(ob->orig, obtfm->orig);
2454         copy_v3_v3(ob->size, obtfm->size);
2455         copy_v3_v3(ob->dsize, obtfm->dsize);
2456         copy_v3_v3(ob->rot, obtfm->rot);
2457         copy_v3_v3(ob->drot, obtfm->drot);
2458         copy_qt_qt(ob->quat, obtfm->quat);
2459         copy_qt_qt(ob->dquat, obtfm->dquat);
2460         copy_v3_v3(ob->rotAxis, obtfm->rotAxis);
2461         copy_v3_v3(ob->drotAxis, obtfm->drotAxis);
2462         ob->rotAngle= obtfm->rotAngle;
2463         ob->drotAngle= obtfm->drotAngle;
2464         copy_m4_m4(ob->obmat, obtfm->obmat);
2465         copy_m4_m4(ob->parentinv, obtfm->parentinv);
2466         copy_m4_m4(ob->constinv, obtfm->constinv);
2467         copy_m4_m4(ob->imat, obtfm->imat);
2468 }
2469
2470 /* proxy rule: lib_object->proxy_from == the one we borrow from, only set temporal and cleared here */
2471 /*           local_object->proxy      == pointer to library object, saved in files and read */
2472
2473 /* function below is polluted with proxy exceptions, cleanup will follow! */
2474
2475 /* the main object update call, for object matrix, constraints, keys and displist (modifiers) */
2476 /* requires flags to be set! */
2477 void object_handle_update(Scene *scene, Object *ob)
2478 {
2479         if(ob->recalc & OB_RECALC_ALL) {
2480                 /* speed optimization for animation lookups */
2481                 if(ob->pose)
2482                         make_pose_channels_hash(ob->pose);
2483
2484                 if(ob->recalc & OB_RECALC_DATA) {
2485                         if(ob->type==OB_ARMATURE) {
2486                                 /* this happens for reading old files and to match library armatures
2487                                    with poses we do it ahead of where_is_object to ensure animation
2488                                    is evaluated on the rebuilt pose, otherwise we get incorrect poses
2489                                    on file load */
2490                                 if(ob->pose==NULL || (ob->pose->flag & POSE_RECALC))
2491                                         armature_rebuild_pose(ob, ob->data);
2492                         }
2493                 }
2494
2495                 /* XXX new animsys warning: depsgraph tag OB_RECALC_DATA should not skip drivers, 
2496                    which is only in where_is_object now */
2497                 // XXX: should this case be OB_RECALC_OB instead?
2498                 if(ob->recalc & OB_RECALC_ALL) {
2499                         
2500                         if (G.f & G_DEBUG)
2501                                 printf("recalcob %s\n", ob->id.name+2);
2502                         
2503                         /* handle proxy copy for target */
2504                         if(ob->id.lib && ob->proxy_from) {
2505                                 // printf("ob proxy copy, lib ob %s proxy %s\n", ob->id.name, ob->proxy_from->id.name);
2506                                 if(ob->proxy_from->proxy_group) {/* transform proxy into group space */
2507                                         Object *obg= ob->proxy_from->proxy_group;
2508                                         invert_m4_m4(obg->imat, obg->obmat);
2509                                         mul_m4_m4m4(ob->obmat, ob->proxy_from->obmat, obg->imat);
2510                                 }
2511                                 else
2512                                         copy_m4_m4(ob->obmat, ob->proxy_from->obmat);
2513                         }
2514                         else
2515                                 where_is_object(scene, ob);
2516                 }
2517                 
2518                 if(ob->recalc & OB_RECALC_DATA) {
2519                         ID *data_id= (ID *)ob->data;
2520                         AnimData *adt= BKE_animdata_from_id(data_id);
2521                         float ctime= (float)scene->r.cfra; // XXX this is bad...
2522                         ListBase pidlist;
2523                         PTCacheID *pid;
2524                         
2525                         if (G.f & G_DEBUG)
2526                                 printf("recalcdata %s\n", ob->id.name+2);
2527                         
2528                         /* includes all keys and modifiers */
2529                         if(ob->type==OB_MESH) {
2530                                 BMEditMesh *em = ((Mesh*)ob->data)->edit_btmesh;
2531                                 
2532                                 /* evaluate drivers */
2533                                 // XXX: should we push this to derivedmesh instead?
2534                                 BKE_animsys_evaluate_animdata(data_id, adt, ctime, ADT_RECALC_DRIVERS);
2535                                 
2536                                 // here was vieweditdatamask? XXX
2537                                 if(em) {
2538                                         makeDerivedMesh(scene, ob, em, CD_MASK_BAREMESH);
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