source/blender/blenkernel/intern/scene.c

   1 /*  scene.c
   2  *
   3  *
   4  * $Id$
   5  *
   6  * ***** BEGIN GPL LICENSE BLOCK *****
   7  *
   8  * This program is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU General Public License
  10  * as published by the Free Software Foundation; either version 2
  11  * of the License, or (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software Foundation,
  20  * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  21  *
  22  * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
  23  * All rights reserved.
  24  *
  25  * The Original Code is: all of this file.
  26  *
  27  * Contributor(s): none yet.
  28  *
  29  * ***** END GPL LICENSE BLOCK *****
  30  */
  31
  32 #include <stddef.h>
  33 #include <stdio.h>
  34 #include <string.h>
  35
  36 #ifndef WIN32
  37 #include <unistd.h>
  38 #else
  39 #include <io.h>
  40 #endif
  41
  42 #include "MEM_guardedalloc.h"
  43
  44 #include "DNA_anim_types.h"
  45 #include "DNA_group_types.h"
  46 #include "DNA_object_types.h"
  47 #include "DNA_scene_types.h"
  48 #include "DNA_screen_types.h"
  49 #include "DNA_sequence_types.h"
  50
  51 #include "BLI_math.h"
  52 #include "BLI_blenlib.h"
  53 #include "BLI_utildefines.h"
  54
  55 #include "BKE_anim.h"
  56 #include "BKE_animsys.h"
  57 #include "BKE_depsgraph.h"
  58 #include "BKE_global.h"
  59 #include "BKE_group.h"
  60 #include "BKE_idprop.h"
  61 #include "BKE_library.h"
  62 #include "BKE_main.h"
  63 #include "BKE_node.h"
  64 #include "BKE_object.h"
  65 #include "BKE_paint.h"
  66 #include "BKE_pointcache.h"
  67 #include "BKE_scene.h"
  68 #include "BKE_sequencer.h"
  69 #include "BKE_world.h"
  70
  71 #include "BKE_sound.h"
  72
  73 //XXX #include "BIF_previewrender.h"
  74 //XXX #include "BIF_editseq.h"
  75
  76 //XXX #include "nla.h"
  77
  78 #ifdef WIN32
  79 #else
  80 #include <sys/time.h>
  81 #endif
  82
  83 void free_avicodecdata(AviCodecData *acd)
  84 {
  85         if (acd) {
  86                 if (acd->lpFormat){
  87                         MEM_freeN(acd->lpFormat);
  88                         acd->lpFormat = NULL;
  89                         acd->cbFormat = 0;
  90                 }
  91                 if (acd->lpParms){
  92                         MEM_freeN(acd->lpParms);
  93                         acd->lpParms = NULL;
  94                         acd->cbParms = 0;
  95                 }
  96         }
  97 }
  98
  99 void free_qtcodecdata(QuicktimeCodecData *qcd)
 100 {
 101         if (qcd) {
 102                 if (qcd->cdParms){
 103                         MEM_freeN(qcd->cdParms);
 104                         qcd->cdParms = NULL;
 105                         qcd->cdSize = 0;
 106                 }
 107         }
 108 }
 109
 110 Scene *copy_scene(Scene *sce, int type)
 111 {
 112         Scene *scen;
 113         ToolSettings *ts;
 114         Base *base, *obase;
 115
 116         if(type == SCE_COPY_EMPTY) {
 117                 ListBase lb;
 118                 scen= add_scene(sce->id.name+2);
 119
 120                 lb= scen->r.layers;
 121                 scen->r= sce->r;
 122                 scen->r.layers= lb;
 123         }
 124         else {
 125                 scen= copy_libblock(sce);
 126                 BLI_duplicatelist(&(scen->base), &(sce->base));
 127
 128                 clear_id_newpoins();
 129
 130                 id_us_plus((ID *)scen->world);
 131                 id_us_plus((ID *)scen->set);
 132                 id_us_plus((ID *)scen->gm.dome.warptext);
 133
 134                 scen->ed= NULL;
 135                 scen->theDag= NULL;
 136                 scen->obedit= NULL;
 137                 scen->toolsettings= MEM_dupallocN(sce->toolsettings);
 138                 scen->stats= NULL;
 139                 scen->fps_info= NULL;
 140
 141                 ts= scen->toolsettings;
 142                 if(ts) {
 143                         if(ts->vpaint) {
 144                                 ts->vpaint= MEM_dupallocN(ts->vpaint);
 145                                 ts->vpaint->paintcursor= NULL;
 146                                 ts->vpaint->vpaint_prev= NULL;
 147                                 ts->vpaint->wpaint_prev= NULL;
 148                                 copy_paint(&ts->vpaint->paint, &ts->vpaint->paint);
 149                         }
 150                         if(ts->wpaint) {
 151                                 ts->wpaint= MEM_dupallocN(ts->wpaint);
 152                                 ts->wpaint->paintcursor= NULL;
 153                                 ts->wpaint->vpaint_prev= NULL;
 154                                 ts->wpaint->wpaint_prev= NULL;
 155                                 copy_paint(&ts->wpaint->paint, &ts->wpaint->paint);
 156                         }
 157                         if(ts->sculpt) {
 158                                 ts->sculpt= MEM_dupallocN(ts->sculpt);
 159                                 copy_paint(&ts->sculpt->paint, &ts->sculpt->paint);
 160                         }
 161
 162                         copy_paint(&ts->imapaint.paint, &ts->imapaint.paint);
 163                         ts->imapaint.paintcursor= NULL;
 164
 165                         ts->particle.paintcursor= NULL;
 166                 }
 167
 168                 BLI_duplicatelist(&(scen->markers), &(sce->markers));
 169                 BLI_duplicatelist(&(scen->transform_spaces), &(sce->transform_spaces));
 170                 BLI_duplicatelist(&(scen->r.layers), &(sce->r.layers));
 171                 BKE_keyingsets_copy(&(scen->keyingsets), &(sce->keyingsets));
 172
 173                 if(sce->nodetree) {
 174                         scen->nodetree= ntreeCopyTree(sce->nodetree, 0); /* copies actions */
 175                         ntreeSwitchID(scen->nodetree, &sce->id, &scen->id);
 176                 }
 177
 178                 obase= sce->base.first;
 179                 base= scen->base.first;
 180                 while(base) {
 181                         id_us_plus(&base->object->id);
 182                         if(obase==sce->basact) scen->basact= base;
 183
 184                         obase= obase->next;
 185                         base= base->next;
 186                 }
 187         }
 188
 189         /* make a private copy of the avicodecdata */
 190         if(sce->r.avicodecdata) {
 191                 scen->r.avicodecdata = MEM_dupallocN(sce->r.avicodecdata);
 192                 scen->r.avicodecdata->lpFormat = MEM_dupallocN(scen->r.avicodecdata->lpFormat);
 193                 scen->r.avicodecdata->lpParms = MEM_dupallocN(scen->r.avicodecdata->lpParms);
 194         }
 195
 196         /* make a private copy of the qtcodecdata */
 197         if(sce->r.qtcodecdata) {
 198                 scen->r.qtcodecdata = MEM_dupallocN(sce->r.qtcodecdata);
 199                 scen->r.qtcodecdata->cdParms = MEM_dupallocN(scen->r.qtcodecdata->cdParms);
 200         }
 201
 202         if(sce->r.ffcodecdata.properties) { /* intentionally check scen not sce. */
 203                 scen->r.ffcodecdata.properties= IDP_CopyProperty(sce->r.ffcodecdata.properties);
 204         }
 205
 206         /* NOTE: part of SCE_COPY_LINK_DATA and SCE_COPY_FULL operations
 207          * are done outside of blenkernel with ED_objects_single_users! */
 208
 209         /*  camera */
 210         if(type == SCE_COPY_LINK_DATA || type == SCE_COPY_FULL) {
 211                 ID_NEW(scen->camera);
 212         }
 213
 214         /* before scene copy */
 215         sound_create_scene(scen);
 216
 217         /* world */
 218         if(type == SCE_COPY_FULL) {
 219                 BKE_copy_animdata_id_action((ID *)scen);
 220                 if(scen->world) {
 221                         id_us_plus((ID *)scen->world);
 222                         scen->world= copy_world(scen->world);
 223                         BKE_copy_animdata_id_action((ID *)scen->world);
 224                 }
 225
 226                 if(sce->ed) {
 227                         scen->ed= MEM_callocN( sizeof(Editing), "addseq");
 228                         scen->ed->seqbasep= &scen->ed->seqbase;
 229                         seqbase_dupli_recursive(sce, scen, &scen->ed->seqbase, &sce->ed->seqbase, SEQ_DUPE_ALL);
 230                 }
 231         }
 232
 233         return scen;
 234 }
 235
 236 /* do not free scene itself */
 237 void free_scene(Scene *sce)
 238 {
 239         Base *base;
 240
 241         base= sce->base.first;
 242         while(base) {
 243                 base->object->id.us--;
 244                 base= base->next;
 245         }
 246         /* do not free objects! */
 247
 248         if(sce->gpd) {
 249 #if 0   // removed since this can be invalid memory when freeing everything
 250                 // since the grease pencil data is free'd before the scene.
 251                 // since grease pencil data is not (yet?), shared between objects
 252                 // its probably safe not to do this, some save and reload will free this.
 253                 sce->gpd->id.us--;
 254 #endif
 255                 sce->gpd= NULL;
 256         }
 257
 258         BLI_freelistN(&sce->base);
 259         seq_free_editing(sce);
 260
 261         BKE_free_animdata((ID *)sce);
 262         BKE_keyingsets_free(&sce->keyingsets);
 263
 264         if (sce->r.avicodecdata) {
 265                 free_avicodecdata(sce->r.avicodecdata);
 266                 MEM_freeN(sce->r.avicodecdata);
 267                 sce->r.avicodecdata = NULL;
 268         }
 269         if (sce->r.qtcodecdata) {
 270                 free_qtcodecdata(sce->r.qtcodecdata);
 271                 MEM_freeN(sce->r.qtcodecdata);
 272                 sce->r.qtcodecdata = NULL;
 273         }
 274         if (sce->r.ffcodecdata.properties) {
 275                 IDP_FreeProperty(sce->r.ffcodecdata.properties);
 276                 MEM_freeN(sce->r.ffcodecdata.properties);
 277                 sce->r.ffcodecdata.properties = NULL;
 278         }
 279
 280         BLI_freelistN(&sce->markers);
 281         BLI_freelistN(&sce->transform_spaces);
 282         BLI_freelistN(&sce->r.layers);
 283
 284         if(sce->toolsettings) {
 285                 if(sce->toolsettings->vpaint) {
 286                         free_paint(&sce->toolsettings->vpaint->paint);
 287                         MEM_freeN(sce->toolsettings->vpaint);
 288                 }
 289                 if(sce->toolsettings->wpaint) {
 290                         free_paint(&sce->toolsettings->wpaint->paint);
 291                         MEM_freeN(sce->toolsettings->wpaint);
 292                 }
 293                 if(sce->toolsettings->sculpt) {
 294                         free_paint(&sce->toolsettings->sculpt->paint);
 295                         MEM_freeN(sce->toolsettings->sculpt);
 296                 }
 297                 free_paint(&sce->toolsettings->imapaint.paint);
 298
 299                 MEM_freeN(sce->toolsettings);
 300                 sce->toolsettings = NULL;
 301         }
 302
 303         if (sce->theDag) {
 304                 free_forest(sce->theDag);
 305                 MEM_freeN(sce->theDag);
 306         }
 307
 308         if(sce->nodetree) {
 309                 ntreeFreeTree(sce->nodetree);
 310                 MEM_freeN(sce->nodetree);
 311         }
 312
 313         if(sce->stats)
 314                 MEM_freeN(sce->stats);
 315         if(sce->fps_info)
 316                 MEM_freeN(sce->fps_info);
 317
 318         sound_destroy_scene(sce);
 319 }
 320
 321 Scene *add_scene(const char *name)
 322 {
 323         Main *bmain= G.main;
 324         Scene *sce;
 325         ParticleEditSettings *pset;
 326         int a;
 327
 328         sce= alloc_libblock(&bmain->scene, ID_SCE, name);
 329         sce->lay= sce->layact= 1;
 330
 331         sce->r.mode= R_GAMMA|R_OSA|R_SHADOW|R_SSS|R_ENVMAP|R_RAYTRACE;
 332         sce->r.cfra= 1;
 333         sce->r.sfra= 1;
 334         sce->r.efra= 250;
 335         sce->r.frame_step= 1;
 336         sce->r.xsch= 1920;
 337         sce->r.ysch= 1080;
 338         sce->r.xasp= 1;
 339         sce->r.yasp= 1;
 340         sce->r.xparts= 8;
 341         sce->r.yparts= 8;
 342         sce->r.mblur_samples= 1;
 343         sce->r.filtertype= R_FILTER_MITCH;
 344         sce->r.size= 50;
 345         sce->r.planes= 24;
 346         sce->r.imtype= R_PNG;
 347         sce->r.quality= 90;
 348         sce->r.displaymode= R_OUTPUT_AREA;
 349         sce->r.framapto= 100;
 350         sce->r.images= 100;
 351         sce->r.framelen= 1.0;
 352         sce->r.blurfac= 0.5;
 353         sce->r.frs_sec= 24;
 354         sce->r.frs_sec_base= 1;
 355         sce->r.edgeint= 10;
 356         sce->r.ocres = 128;
 357         sce->r.color_mgt_flag |= R_COLOR_MANAGEMENT;
 358         sce->r.gauss= 1.0;
 359
 360         /* deprecated but keep for upwards compat */
 361         sce->r.postgamma= 1.0;
 362         sce->r.posthue= 0.0;
 363         sce->r.postsat= 1.0;
 364
 365         sce->r.bake_mode= 1;    /* prevent to include render stuff here */
 366         sce->r.bake_filter= 2;
 367         sce->r.bake_osa= 5;
 368         sce->r.bake_flag= R_BAKE_CLEAR;
 369         sce->r.bake_normal_space= R_BAKE_SPACE_TANGENT;
 370         sce->r.scemode= R_DOCOMP|R_DOSEQ|R_EXTENSION;
 371         sce->r.stamp= R_STAMP_TIME|R_STAMP_FRAME|R_STAMP_DATE|R_STAMP_CAMERA|R_STAMP_SCENE|R_STAMP_FILENAME|R_STAMP_RENDERTIME;
 372         sce->r.stamp_font_id= 12;
 373         sce->r.fg_stamp[0]= sce->r.fg_stamp[1]= sce->r.fg_stamp[2]= 0.8f;
 374         sce->r.fg_stamp[3]= 1.0f;
 375         sce->r.bg_stamp[0]= sce->r.bg_stamp[1]= sce->r.bg_stamp[2]= 0.0f;
 376         sce->r.bg_stamp[3]= 0.25f;
 377         sce->r.raytrace_options = R_RAYTRACE_USE_INSTANCES;
 378
 379         sce->r.seq_prev_type= OB_SOLID;
 380         sce->r.seq_rend_type= OB_SOLID;
 381         sce->r.seq_flag= R_SEQ_GL_PREV;
 382
 383         sce->r.threads= 1;
 384
 385         sce->r.simplify_subsurf= 6;
 386         sce->r.simplify_particles= 1.0f;
 387         sce->r.simplify_shadowsamples= 16;
 388         sce->r.simplify_aosss= 1.0f;
 389
 390         sce->r.cineonblack= 95;
 391         sce->r.cineonwhite= 685;
 392         sce->r.cineongamma= 1.7f;
 393
 394         sce->r.border.xmin= 0.0f;
 395         sce->r.border.ymin= 0.0f;
 396         sce->r.border.xmax= 1.0f;
 397         sce->r.border.ymax= 1.0f;
 398
 399         sce->toolsettings = MEM_callocN(sizeof(struct ToolSettings),"Tool Settings Struct");
 400         sce->toolsettings->cornertype=1;
 401         sce->toolsettings->degr = 90;
 402         sce->toolsettings->step = 9;
 403         sce->toolsettings->turn = 1;
 404         sce->toolsettings->extr_offs = 1;
 405         sce->toolsettings->doublimit = 0.001;
 406         sce->toolsettings->segments = 32;
 407         sce->toolsettings->rings = 32;
 408         sce->toolsettings->vertices = 32;
 409         sce->toolsettings->editbutflag = 1;
 410         sce->toolsettings->uvcalc_radius = 1.0f;
 411         sce->toolsettings->uvcalc_cubesize = 1.0f;
 412         sce->toolsettings->uvcalc_mapdir = 1;
 413         sce->toolsettings->uvcalc_mapalign = 1;
 414         sce->toolsettings->unwrapper = 1;
 415         sce->toolsettings->select_thresh= 0.01f;
 416         sce->toolsettings->jointrilimit = 0.8f;
 417
 418         sce->toolsettings->selectmode= SCE_SELECT_VERTEX;
 419         sce->toolsettings->uv_selectmode= UV_SELECT_VERTEX;
 420         sce->toolsettings->normalsize= 0.1;
 421         sce->toolsettings->autokey_mode= U.autokey_mode;
 422
 423         sce->toolsettings->skgen_resolution = 100;
 424         sce->toolsettings->skgen_threshold_internal     = 0.01f;
 425         sce->toolsettings->skgen_threshold_external     = 0.01f;
 426         sce->toolsettings->skgen_angle_limit                    = 45.0f;
 427         sce->toolsettings->skgen_length_ratio                   = 1.3f;
 428         sce->toolsettings->skgen_length_limit                   = 1.5f;
 429         sce->toolsettings->skgen_correlation_limit              = 0.98f;
 430         sce->toolsettings->skgen_symmetry_limit                 = 0.1f;
 431         sce->toolsettings->skgen_postpro = SKGEN_SMOOTH;
 432         sce->toolsettings->skgen_postpro_passes = 1;
 433         sce->toolsettings->skgen_options = SKGEN_FILTER_INTERNAL|SKGEN_FILTER_EXTERNAL|SKGEN_FILTER_SMART|SKGEN_HARMONIC|SKGEN_SUB_CORRELATION|SKGEN_STICK_TO_EMBEDDING;
 434         sce->toolsettings->skgen_subdivisions[0] = SKGEN_SUB_CORRELATION;
 435         sce->toolsettings->skgen_subdivisions[1] = SKGEN_SUB_LENGTH;
 436         sce->toolsettings->skgen_subdivisions[2] = SKGEN_SUB_ANGLE;
 437
 438         sce->toolsettings->proportional_size = 1.0f;
 439
 440         sce->physics_settings.gravity[0] = 0.0f;
 441         sce->physics_settings.gravity[1] = 0.0f;
 442         sce->physics_settings.gravity[2] = -9.81f;
 443         sce->physics_settings.flag = PHYS_GLOBAL_GRAVITY;
 444
 445         sce->unit.scale_length = 1.0f;
 446
 447         pset= &sce->toolsettings->particle;
 448         pset->flag= PE_KEEP_LENGTHS|PE_LOCK_FIRST|PE_DEFLECT_EMITTER|PE_AUTO_VELOCITY;
 449         pset->emitterdist= 0.25f;
 450         pset->totrekey= 5;
 451         pset->totaddkey= 5;
 452         pset->brushtype= PE_BRUSH_NONE;
 453         pset->draw_step= 2;
 454         pset->fade_frames= 2;
 455         pset->selectmode= SCE_SELECT_PATH;
 456         for(a=0; a<PE_TOT_BRUSH; a++) {
 457                 pset->brush[a].strength= 0.5;
 458                 pset->brush[a].size= 50;
 459                 pset->brush[a].step= 10;
 460                 pset->brush[a].count= 10;
 461         }
 462         pset->brush[PE_BRUSH_CUT].strength= 100;
 463
 464         sce->r.ffcodecdata.audio_mixrate = 44100;
 465         sce->r.ffcodecdata.audio_volume = 1.0f;
 466
 467         BLI_strncpy(sce->r.engine, "BLENDER_RENDER", sizeof(sce->r.engine));
 468
 469         sce->audio.distance_model = 2.0;
 470         sce->audio.doppler_factor = 1.0;
 471         sce->audio.speed_of_sound = 343.3;
 472
 473         strcpy(sce->r.backbuf, "//backbuf");
 474         strcpy(sce->r.pic, U.renderdir);
 475
 476         BLI_init_rctf(&sce->r.safety, 0.1f, 0.9f, 0.1f, 0.9f);
 477         sce->r.osa= 8;
 478
 479         /* note; in header_info.c the scene copy happens..., if you add more to renderdata it has to be checked there */
 480         scene_add_render_layer(sce);
 481
 482         /* game data */
 483         sce->gm.stereoflag = STEREO_NOSTEREO;
 484         sce->gm.stereomode = STEREO_ANAGLYPH;
 485         sce->gm.eyeseparation = 0.10;
 486
 487         sce->gm.dome.angle = 180;
 488         sce->gm.dome.mode = DOME_FISHEYE;
 489         sce->gm.dome.res = 4;
 490         sce->gm.dome.resbuf = 1.0f;
 491         sce->gm.dome.tilt = 0;
 492
 493         sce->gm.xplay= 640;
 494         sce->gm.yplay= 480;
 495         sce->gm.freqplay= 60;
 496         sce->gm.depth= 32;
 497
 498         sce->gm.gravity= 9.8f;
 499         sce->gm.physicsEngine= WOPHY_BULLET;
 500         sce->gm.mode = 32; //XXX ugly harcoding, still not sure we should drop mode. 32 == 1 << 5 == use_occlusion_culling
 501         sce->gm.occlusionRes = 128;
 502         sce->gm.ticrate = 60;
 503         sce->gm.maxlogicstep = 5;
 504         sce->gm.physubstep = 1;
 505         sce->gm.maxphystep = 5;
 506
 507         sce->gm.flag = GAME_DISPLAY_LISTS;
 508         sce->gm.matmode = GAME_MAT_MULTITEX;
 509
 510         sound_create_scene(sce);
 511
 512         return sce;
 513 }
 514
 515 Base *object_in_scene(Object *ob, Scene *sce)
 516 {
 517         Base *base;
 518
 519         base= sce->base.first;
 520         while(base) {
 521                 if(base->object == ob) return base;
 522                 base= base->next;
 523         }
 524         return NULL;
 525 }
 526
 527 void set_scene_bg(Main *bmain, Scene *scene)
 528 {
 529         Scene *sce;
 530         Base *base;
 531         Object *ob;
 532         Group *group;
 533         GroupObject *go;
 534         int flag;
 535
 536         /* check for cyclic sets, for reading old files but also for definite security (py?) */
 537         scene_check_setscene(bmain, scene);
 538
 539         /* can happen when switching modes in other scenes */
 540         if(scene->obedit && !(scene->obedit->mode & OB_MODE_EDIT))
 541                 scene->obedit= NULL;
 542
 543         /* deselect objects (for dataselect) */
 544         for(ob= bmain->object.first; ob; ob= ob->id.next)
 545                 ob->flag &= ~(SELECT|OB_FROMGROUP);
 546
 547         /* group flags again */
 548         for(group= bmain->group.first; group; group= group->id.next) {
 549                 go= group->gobject.first;
 550                 while(go) {
 551                         if(go->ob) go->ob->flag |= OB_FROMGROUP;
 552                         go= go->next;
 553                 }
 554         }
 555
 556         /* sort baselist */
 557         DAG_scene_sort(bmain, scene);
 558
 559         /* ensure dags are built for sets */
 560         for(sce= scene->set; sce; sce= sce->set)
 561                 if(sce->theDag==NULL)
 562                         DAG_scene_sort(bmain, sce);
 563
 564         /* copy layers and flags from bases to objects */
 565         for(base= scene->base.first; base; base= base->next) {
 566                 ob= base->object;
 567                 ob->lay= base->lay;
 568
 569                 /* group patch... */
 570                 base->flag &= ~(OB_FROMGROUP);
 571                 flag= ob->flag & (OB_FROMGROUP);
 572                 base->flag |= flag;
 573
 574                 /* not too nice... for recovering objects with lost data */
 575                 //if(ob->pose==NULL) base->flag &= ~OB_POSEMODE;
 576                 ob->flag= base->flag;
 577
 578                 ob->ctime= -1234567.0;  /* force ipo to be calculated later */
 579         }
 580         /* no full animation update, this to enable render code to work (render code calls own animation updates) */
 581 }
 582
 583 /* called from creator.c */
 584 Scene *set_scene_name(Main *bmain, const char *name)
 585 {
 586         Scene *sce= (Scene *)find_id("SC", name);
 587         if(sce) {
 588                 set_scene_bg(bmain, sce);
 589                 printf("Scene switch: '%s' in file: '%s'\n", name, G.main->name);
 590                 return sce;
 591         }
 592
 593         printf("Can't find scene: '%s' in file: '%s'\n", name, G.main->name);
 594         return NULL;
 595 }
 596
 597 void unlink_scene(Main *bmain, Scene *sce, Scene *newsce)
 598 {
 599         Scene *sce1;
 600         bScreen *sc;
 601
 602         /* check all sets */
 603         for(sce1= bmain->scene.first; sce1; sce1= sce1->id.next)
 604                 if(sce1->set == sce)
 605                         sce1->set= NULL;
 606
 607         /* check all sequences */
 608         clear_scene_in_allseqs(bmain, sce);
 609
 610         /* check render layer nodes in other scenes */
 611         clear_scene_in_nodes(bmain, sce);
 612
 613         /* al screens */
 614         for(sc= bmain->screen.first; sc; sc= sc->id.next)
 615                 if(sc->scene == sce)
 616                         sc->scene= newsce;
 617
 618         free_libblock(&bmain->scene, sce);
 619 }
 620
 621 /* used by metaballs
 622  * doesnt return the original duplicated object, only dupli's
 623  */
 624 int next_object(Scene **scene, int val, Base **base, Object **ob)
 625 {
 626         static ListBase *duplilist= NULL;
 627         static DupliObject *dupob;
 628         static int fase= F_START, in_next_object= 0;
 629         int run_again=1;
 630
 631         /* init */
 632         if(val==0) {
 633                 fase= F_START;
 634                 dupob= NULL;
 635
 636                 /* XXX particle systems with metas+dupligroups call this recursively */
 637                 /* see bug #18725 */
 638                 if(in_next_object) {
 639                         printf("ERROR: MetaBall generation called recursively, not supported\n");
 640
 641                         return F_ERROR;
 642                 }
 643         }
 644         else {
 645                 in_next_object= 1;
 646
 647                 /* run_again is set when a duplilist has been ended */
 648                 while(run_again) {
 649                         run_again= 0;
 650
 651                         /* the first base */
 652                         if(fase==F_START) {
 653                                 *base= (*scene)->base.first;
 654                                 if(*base) {
 655                                         *ob= (*base)->object;
 656                                         fase= F_SCENE;
 657                                 }
 658                                 else {
 659                                         /* exception: empty scene */
 660                                         while((*scene)->set) {
 661                                                 (*scene)= (*scene)->set;
 662                                                 if((*scene)->base.first) {
 663                                                         *base= (*scene)->base.first;
 664                                                         *ob= (*base)->object;
 665                                                         fase= F_SCENE;
 666                                                         break;
 667                                                 }
 668                                         }
 669                                 }
 670                         }
 671                         else {
 672                                 if(*base && fase!=F_DUPLI) {
 673                                         *base= (*base)->next;
 674                                         if(*base) *ob= (*base)->object;
 675                                         else {
 676                                                 if(fase==F_SCENE) {
 677                                                         /* (*scene) is finished, now do the set */
 678                                                         while((*scene)->set) {
 679                                                                 (*scene)= (*scene)->set;
 680                                                                 if((*scene)->base.first) {
 681                                                                         *base= (*scene)->base.first;
 682                                                                         *ob= (*base)->object;
 683                                                                         break;
 684                                                                 }
 685                                                         }
 686                                                 }
 687                                         }
 688                                 }
 689                         }
 690
 691                         if(*base == NULL) fase= F_START;
 692                         else {
 693                                 if(fase!=F_DUPLI) {
 694                                         if( (*base)->object->transflag & OB_DUPLI) {
 695                                                 /* groups cannot be duplicated for mballs yet,
 696                                                 this enters eternal loop because of
 697                                                 makeDispListMBall getting called inside of group_duplilist */
 698                                                 if((*base)->object->dup_group == NULL) {
 699                                                         duplilist= object_duplilist((*scene), (*base)->object);
 700
 701                                                         dupob= duplilist->first;
 702
 703                                                         if(!dupob)
 704                                                                 free_object_duplilist(duplilist);
 705                                                 }
 706                                         }
 707                                 }
 708                                 /* handle dupli's */
 709                                 if(dupob) {
 710
 711                                         copy_m4_m4(dupob->ob->obmat, dupob->mat);
 712
 713                                         (*base)->flag |= OB_FROMDUPLI;
 714                                         *ob= dupob->ob;
 715                                         fase= F_DUPLI;
 716
 717                                         dupob= dupob->next;
 718                                 }
 719                                 else if(fase==F_DUPLI) {
 720                                         fase= F_SCENE;
 721                                         (*base)->flag &= ~OB_FROMDUPLI;
 722
 723                                         for(dupob= duplilist->first; dupob; dupob= dupob->next) {
 724                                                 copy_m4_m4(dupob->ob->obmat, dupob->omat);
 725                                         }
 726
 727                                         free_object_duplilist(duplilist);
 728                                         duplilist= NULL;
 729                                         run_again= 1;
 730                                 }
 731                         }
 732                 }
 733         }
 734
 735         /* if(ob && *ob) {
 736                 printf("Scene: '%s', '%s'\n", (*scene)->id.name+2, (*ob)->id.name+2);
 737         } */
 738
 739         /* reset recursion test */
 740         in_next_object= 0;
 741
 742         return fase;
 743 }
 744
 745 Object *scene_find_camera(Scene *sc)
 746 {
 747         Base *base;
 748
 749         for (base= sc->base.first; base; base= base->next)
 750                 if (base->object->type==OB_CAMERA)
 751                         return base->object;
 752
 753         return NULL;
 754 }
 755
 756 #ifdef DURIAN_CAMERA_SWITCH
 757 Object *scene_camera_switch_find(Scene *scene)
 758 {
 759         TimeMarker *m;
 760         int cfra = scene->r.cfra;
 761         int frame = -(MAXFRAME + 1);
 762         Object *camera= NULL;
 763
 764         for (m= scene->markers.first; m; m= m->next) {
 765                 if(m->camera && (m->camera->restrictflag & OB_RESTRICT_RENDER)==0 && (m->frame <= cfra) && (m->frame > frame)) {
 766                         camera= m->camera;
 767                         frame= m->frame;
 768
 769                         if(frame == cfra)
 770                                 break;
 771
 772                 }
 773         }
 774         return camera;
 775 }
 776 #endif
 777
 778 int scene_camera_switch_update(Scene *scene)
 779 {
 780 #ifdef DURIAN_CAMERA_SWITCH
 781         Object *camera= scene_camera_switch_find(scene);
 782         if(camera) {
 783                 scene->camera= camera;
 784                 return 1;
 785         }
 786 #endif
 787         return 0;
 788 }
 789
 790 char *scene_find_marker_name(Scene *scene, int frame)
 791 {
 792         ListBase *markers= &scene->markers;
 793         TimeMarker *m1, *m2;
 794
 795         /* search through markers for match */
 796         for (m1=markers->first, m2=markers->last; m1 && m2; m1=m1->next, m2=m2->prev) {
 797                 if (m1->frame==frame)
 798                         return m1->name;
 799
 800                 if (m1 == m2)
 801                         break;
 802
 803                 if (m2->frame==frame)
 804                         return m2->name;
 805         }
 806
 807         return NULL;
 808 }
 809
 810 /* return the current marker for this frame,
 811 we can have more then 1 marker per frame, this just returns the first :/ */
 812 char *scene_find_last_marker_name(Scene *scene, int frame)
 813 {
 814         TimeMarker *marker, *best_marker = NULL;
 815         int best_frame = -MAXFRAME*2;
 816         for (marker= scene->markers.first; marker; marker= marker->next) {
 817                 if (marker->frame==frame) {
 818                         return marker->name;
 819                 }
 820
 821                 if ( marker->frame > best_frame && marker->frame < frame) {
 822                         best_marker = marker;
 823                         best_frame = marker->frame;
 824                 }
 825         }
 826
 827         return best_marker ? best_marker->name : NULL;
 828 }
 829
 830 /* markers need transforming from different parts of the code so have
 831  * a generic function to do this */
 832 int scene_marker_tfm_translate(Scene *scene, int delta, int flag)
 833 {
 834         TimeMarker *marker;
 835         int tot= 0;
 836
 837         for (marker= scene->markers.first; marker; marker= marker->next) {
 838                 if ((marker->flag & flag) == flag) {
 839                         marker->frame += delta;
 840                         tot++;
 841                 }
 842         }
 843
 844         return tot;
 845 }
 846
 847 int scene_marker_tfm_extend(Scene *scene, int delta, int flag, int frame, char side)
 848 {
 849         TimeMarker *marker;
 850         int tot= 0;
 851
 852         for (marker= scene->markers.first; marker; marker= marker->next) {
 853                 if ((marker->flag & flag) == flag) {
 854                         if((side=='L' && marker->frame < frame) || (side=='R' && marker->frame >= frame)) {
 855                                 marker->frame += delta;
 856                                 tot++;
 857                         }
 858                 }
 859         }
 860
 861         return tot;
 862 }
 863
 864 int scene_marker_tfm_scale(struct Scene *scene, float value, int flag)
 865 {
 866         TimeMarker *marker;
 867         int tot= 0;
 868
 869         for (marker= scene->markers.first; marker; marker= marker->next) {
 870                 if ((marker->flag & flag) == flag) {
 871                         marker->frame= CFRA + (int)floorf(((float)(marker->frame - CFRA) * value) + 0.5f);
 872                         tot++;
 873                 }
 874         }
 875
 876         return tot;
 877 }
 878
 879 Base *scene_add_base(Scene *sce, Object *ob)
 880 {
 881         Base *b= MEM_callocN(sizeof(*b), "scene_add_base");
 882         BLI_addhead(&sce->base, b);
 883
 884         b->object= ob;
 885         b->flag= ob->flag;
 886         b->lay= ob->lay;
 887
 888         return b;
 889 }
 890
 891 void scene_deselect_all(Scene *sce)
 892 {
 893         Base *b;
 894
 895         for (b= sce->base.first; b; b= b->next) {
 896                 b->flag&= ~SELECT;
 897                 b->object->flag= b->flag;
 898         }
 899 }
 900
 901 void scene_select_base(Scene *sce, Base *selbase)
 902 {
 903         scene_deselect_all(sce);
 904
 905         selbase->flag |= SELECT;
 906         selbase->object->flag= selbase->flag;
 907
 908         sce->basact= selbase;
 909 }
 910
 911 /* checks for cycle, returns 1 if it's all OK */
 912 int scene_check_setscene(Main *bmain, Scene *sce)
 913 {
 914         Scene *scene;
 915         int a, totscene;
 916
 917         if(sce->set==NULL) return 1;
 918
 919         totscene= 0;
 920         for(scene= bmain->scene.first; scene; scene= scene->id.next)
 921                 totscene++;
 922
 923         for(a=0, scene=sce; scene->set; scene=scene->set, a++) {
 924                 /* more iterations than scenes means we have a cycle */
 925                 if(a > totscene) {
 926                         /* the tested scene gets zero'ed, that's typically current scene */
 927                         sce->set= NULL;
 928                         return 0;
 929                 }
 930         }
 931
 932         return 1;
 933 }
 934
 935 /* This function is needed to cope with fractional frames - including two Blender rendering features
 936 * mblur (motion blur that renders 'subframes' and blurs them together), and fields rendering. */
 937
 938 /* see also bsystem_time in object.c */
 939 float BKE_curframe(Scene *scene)
 940 {
 941         float ctime = scene->r.cfra;
 942         ctime+= scene->r.subframe;
 943         ctime*= scene->r.framelen;
 944
 945         return ctime;
 946 }
 947
 948 /* drivers support/hacks
 949  *      - this method is called from scene_update_tagged_recursive(), so gets included in viewport + render
 950  *      - these are always run since the depsgraph can't handle non-object data
 951  *      - these happen after objects are all done so that we can read in their final transform values,
 952  *        though this means that objects can't refer to scene info for guidance...
 953  */
 954 static void scene_update_drivers(Main *UNUSED(bmain), Scene *scene)
 955 {
 956         float ctime = BKE_curframe(scene);
 957
 958         /* scene itself */
 959         if (scene->adt && scene->adt->drivers.first) {
 960                 BKE_animsys_evaluate_animdata(&scene->id, scene->adt, ctime, ADT_RECALC_DRIVERS);
 961         }
 962
 963         /* world */
 964         // TODO: what about world textures? but then those have nodes too...
 965         if (scene->world) {
 966                 ID *wid = (ID *)scene->world;
 967                 AnimData *adt= BKE_animdata_from_id(wid);
 968
 969                 if (adt && adt->drivers.first)
 970                         BKE_animsys_evaluate_animdata(wid, adt, ctime, ADT_RECALC_DRIVERS);
 971         }
 972
 973         /* nodes */
 974         if (scene->nodetree) {
 975                 ID *nid = (ID *)scene->nodetree;
 976                 AnimData *adt= BKE_animdata_from_id(nid);
 977
 978                 if (adt && adt->drivers.first)
 979                         BKE_animsys_evaluate_animdata(nid, adt, ctime, ADT_RECALC_DRIVERS);
 980         }
 981 }
 982
 983 static void scene_update_tagged_recursive(Main *bmain, Scene *scene, Scene *scene_parent)
 984 {
 985         Base *base;
 986
 987
 988         scene->customdata_mask= scene_parent->customdata_mask;
 989
 990         /* sets first, we allow per definition current scene to have
 991            dependencies on sets, but not the other way around. */
 992         if (scene->set)
 993                 scene_update_tagged_recursive(bmain, scene->set, scene_parent);
 994
 995         /* scene objects */
 996         for (base= scene->base.first; base; base= base->next) {
 997                 Object *ob= base->object;
 998
 999                 object_handle_update(scene_parent, ob);
1000
1001                 if(ob->dup_group && (ob->transflag & OB_DUPLIGROUP))
1002                         group_handle_recalc_and_update(scene_parent, ob, ob->dup_group);
1003
1004                 /* always update layer, so that animating layers works */
1005                 base->lay= ob->lay;
1006         }
1007
1008         /* scene drivers... */
1009         scene_update_drivers(bmain, scene);
1010 }
1011
1012 /* this is called in main loop, doing tagged updates before redraw */
1013 void scene_update_tagged(Main *bmain, Scene *scene)
1014 {
1015         DAG_ids_flush_tagged(bmain);
1016
1017         scene->physics_settings.quick_cache_step= 0;
1018
1019         /* update all objects: drivers, matrices, displists, etc. flags set
1020            by depgraph or manual, no layer check here, gets correct flushed */
1021
1022         scene_update_tagged_recursive(bmain, scene, scene);
1023
1024         /* recalc scene animation data here (for sequencer) */
1025         {
1026                 AnimData *adt= BKE_animdata_from_id(&scene->id);
1027                 float ctime = BKE_curframe(scene);
1028
1029                 if (adt && (adt->recalc & ADT_RECALC_ANIM))
1030                         BKE_animsys_evaluate_animdata(&scene->id, adt, ctime, 0);
1031         }
1032
1033         if (scene->physics_settings.quick_cache_step)
1034                 BKE_ptcache_quick_cache_all(bmain, scene);
1035
1036         /* in the future this should handle updates for all datablocks, not
1037            only objects and scenes. - brecht */
1038 }
1039
1040 /* applies changes right away, does all sets too */
1041 void scene_update_for_newframe(Main *bmain, Scene *sce, unsigned int lay)
1042 {
1043         float ctime = BKE_curframe(sce);
1044         Scene *sce_iter;
1045
1046         /* clear animation overrides */
1047         // XXX TODO...
1048
1049         for(sce_iter= sce; sce_iter; sce_iter= sce_iter->set) {
1050                 if(sce_iter->theDag==NULL)
1051                         DAG_scene_sort(bmain, sce_iter);
1052         }
1053
1054
1055         /* Following 2 functions are recursive
1056          * so dont call within 'scene_update_tagged_recursive' */
1057         DAG_scene_update_flags(bmain, sce, lay, TRUE);   // only stuff that moves or needs display still
1058
1059         /* All 'standard' (i.e. without any dependencies) animation is handled here,
1060          * with an 'local' to 'macro' order of evaluation. This should ensure that
1061          * settings stored nestled within a hierarchy (i.e. settings in a Texture block
1062          * can be overridden by settings from Scene, which owns the Texture through a hierarchy
1063          * such as Scene->World->MTex/Texture) can still get correctly overridden.
1064          */
1065         BKE_animsys_evaluate_all_animation(bmain, ctime);
1066         /*...done with recusrive funcs */
1067
1068         /* object_handle_update() on all objects, groups and sets */
1069         scene_update_tagged_recursive(bmain, sce, sce);
1070 }
1071
1072 /* return default layer, also used to patch old files */
1073 void scene_add_render_layer(Scene *sce)
1074 {
1075         SceneRenderLayer *srl;
1076 //      int tot= 1 + BLI_countlist(&sce->r.layers);
1077
1078         srl= MEM_callocN(sizeof(SceneRenderLayer), "new render layer");
1079         strcpy(srl->name, "RenderLayer");
1080         BLI_uniquename(&sce->r.layers, srl, "RenderLayer", '.', offsetof(SceneRenderLayer, name), sizeof(srl->name));
1081         BLI_addtail(&sce->r.layers, srl);
1082
1083         /* note, this is also in render, pipeline.c, to make layer when scenedata doesnt have it */
1084         srl->lay= (1<<20) -1;
1085         srl->layflag= 0x7FFF;   /* solid ztra halo edge strand */
1086         srl->passflag= SCE_PASS_COMBINED|SCE_PASS_Z;
1087 }
1088
1089 /* render simplification */
1090
1091 int get_render_subsurf_level(RenderData *r, int lvl)
1092 {
1093         if(r->mode & R_SIMPLIFY)
1094                 return MIN2(r->simplify_subsurf, lvl);
1095         else
1096                 return lvl;
1097 }
1098
1099 int get_render_child_particle_number(RenderData *r, int num)
1100 {
1101         if(r->mode & R_SIMPLIFY)
1102                 return (int)(r->simplify_particles*num);
1103         else
1104                 return num;
1105 }
1106
1107 int get_render_shadow_samples(RenderData *r, int samples)
1108 {
1109         if((r->mode & R_SIMPLIFY) && samples > 0)
1110                 return MIN2(r->simplify_shadowsamples, samples);
1111         else
1112                 return samples;
1113 }
1114
1115 float get_render_aosss_error(RenderData *r, float error)
1116 {
1117         if(r->mode & R_SIMPLIFY)
1118                 return ((1.0f-r->simplify_aosss)*10.0f + 1.0f)*error;
1119         else
1120                 return error;
1121 }
1122
1123 /* helper function for the SETLOOPER macro */
1124 Base *_setlooper_base_step(Scene **sce_iter, Base *base)
1125 {
1126     if(base && base->next) {
1127         /* common case, step to the next */
1128         return base->next;
1129     }
1130         else if(base==NULL && (*sce_iter)->base.first) {
1131         /* first time looping, return the scenes first base */
1132                 return (Base *)(*sce_iter)->base.first;
1133     }
1134     else {
1135         /* reached the end, get the next base in the set */
1136                 while((*sce_iter= (*sce_iter)->set)) {
1137                         base= (Base *)(*sce_iter)->base.first;
1138             if(base) {
1139                 return base;
1140             }
1141         }
1142     }
1143
1144     return NULL;
1145 }