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