scene.c

Go to the documentation of this file.

/*  scene.c
 *  
 * 
 * $Id: scene.c 37363 2011-06-10 10:13:50Z campbellbarton $
 *
 * ***** BEGIN GPL LICENSE BLOCK *****
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
 * All rights reserved.
 *
 * The Original Code is: all of this file.
 *
 * Contributor(s): none yet.
 *
 * ***** END GPL LICENSE BLOCK *****
 */

#include <stddef.h>
#include <stdio.h>
#include <string.h>

#ifndef WIN32 
#include <unistd.h>
#else
#include <io.h>
#endif

#include "MEM_guardedalloc.h"

#include "DNA_anim_types.h"
#include "DNA_group_types.h"
#include "DNA_object_types.h"
#include "DNA_scene_types.h"
#include "DNA_screen_types.h"
#include "DNA_sequence_types.h"

#include "BLI_math.h"
#include "BLI_blenlib.h"
#include "BLI_utildefines.h"

#include "BKE_anim.h"
#include "BKE_animsys.h"
#include "BKE_depsgraph.h"
#include "BKE_global.h"
#include "BKE_group.h"
#include "BKE_idprop.h"
#include "BKE_library.h"
#include "BKE_main.h"
#include "BKE_node.h"
#include "BKE_object.h"
#include "BKE_paint.h"
#include "BKE_pointcache.h"
#include "BKE_scene.h"
#include "BKE_sequencer.h"
#include "BKE_world.h"

#include "BKE_sound.h"

//XXX #include "BIF_previewrender.h"
//XXX #include "BIF_editseq.h"

//XXX #include "nla.h"

#ifdef WIN32
#else
#include <sys/time.h>
#endif

void free_avicodecdata(AviCodecData *acd)
{
        if (acd) {
                if (acd->lpFormat){
                        MEM_freeN(acd->lpFormat);
                        acd->lpFormat = NULL;
                        acd->cbFormat = 0;
                }
                if (acd->lpParms){
                        MEM_freeN(acd->lpParms);
                        acd->lpParms = NULL;
                        acd->cbParms = 0;
                }
        }
}

void free_qtcodecdata(QuicktimeCodecData *qcd)
{
        if (qcd) {
                if (qcd->cdParms){
                        MEM_freeN(qcd->cdParms);
                        qcd->cdParms = NULL;
                        qcd->cdSize = 0;
                }
        }
}

Scene *copy_scene(Scene *sce, int type)
{
        Scene *scen;
        ToolSettings *ts;
        Base *base, *obase;
        
        if(type == SCE_COPY_EMPTY) {
                ListBase lb;
                scen= add_scene(sce->id.name+2);
                
                lb= scen->r.layers;
                scen->r= sce->r;
                scen->r.layers= lb;
        }
        else {
                scen= copy_libblock(sce);
                BLI_duplicatelist(&(scen->base), &(sce->base));
                
                clear_id_newpoins();
                
                id_us_plus((ID *)scen->world);
                id_us_plus((ID *)scen->set);
                id_us_plus((ID *)scen->gm.dome.warptext);

                scen->ed= NULL;
                scen->theDag= NULL;
                scen->obedit= NULL;
                scen->toolsettings= MEM_dupallocN(sce->toolsettings);
                scen->stats= NULL;
                scen->fps_info= NULL;

                ts= scen->toolsettings;
                if(ts) {
                        if(ts->vpaint) {
                                ts->vpaint= MEM_dupallocN(ts->vpaint);
                                ts->vpaint->paintcursor= NULL;
                                ts->vpaint->vpaint_prev= NULL;
                                ts->vpaint->wpaint_prev= NULL;
                                copy_paint(&ts->vpaint->paint, &ts->vpaint->paint);
                        }
                        if(ts->wpaint) {
                                ts->wpaint= MEM_dupallocN(ts->wpaint);
                                ts->wpaint->paintcursor= NULL;
                                ts->wpaint->vpaint_prev= NULL;
                                ts->wpaint->wpaint_prev= NULL;
                                copy_paint(&ts->wpaint->paint, &ts->wpaint->paint);
                        }
                        if(ts->sculpt) {
                                ts->sculpt= MEM_dupallocN(ts->sculpt);
                                copy_paint(&ts->sculpt->paint, &ts->sculpt->paint);
                        }

                        copy_paint(&ts->imapaint.paint, &ts->imapaint.paint);
                        ts->imapaint.paintcursor= NULL;

                        ts->particle.paintcursor= NULL;
                }
                
                BLI_duplicatelist(&(scen->markers), &(sce->markers));
                BLI_duplicatelist(&(scen->transform_spaces), &(sce->transform_spaces));
                BLI_duplicatelist(&(scen->r.layers), &(sce->r.layers));
                BKE_keyingsets_copy(&(scen->keyingsets), &(sce->keyingsets));

                if(sce->nodetree) {
                        scen->nodetree= ntreeCopyTree(sce->nodetree); /* copies actions */
                        ntreeSwitchID(scen->nodetree, &sce->id, &scen->id);
                }

                obase= sce->base.first;
                base= scen->base.first;
                while(base) {
                        id_us_plus(&base->object->id);
                        if(obase==sce->basact) scen->basact= base;
        
                        obase= obase->next;
                        base= base->next;
                }
        }
        
        /* make a private copy of the avicodecdata */
        if(sce->r.avicodecdata) {
                scen->r.avicodecdata = MEM_dupallocN(sce->r.avicodecdata);
                scen->r.avicodecdata->lpFormat = MEM_dupallocN(scen->r.avicodecdata->lpFormat);
                scen->r.avicodecdata->lpParms = MEM_dupallocN(scen->r.avicodecdata->lpParms);
        }
        
        /* make a private copy of the qtcodecdata */
        if(sce->r.qtcodecdata) {
                scen->r.qtcodecdata = MEM_dupallocN(sce->r.qtcodecdata);
                scen->r.qtcodecdata->cdParms = MEM_dupallocN(scen->r.qtcodecdata->cdParms);
        }
        
        if(sce->r.ffcodecdata.properties) { /* intentionally check scen not sce. */
                scen->r.ffcodecdata.properties= IDP_CopyProperty(sce->r.ffcodecdata.properties);
        }

        /* NOTE: part of SCE_COPY_LINK_DATA and SCE_COPY_FULL operations
         * are done outside of blenkernel with ED_objects_single_users! */

        /*  camera */
        if(type == SCE_COPY_LINK_DATA || type == SCE_COPY_FULL) {
                ID_NEW(scen->camera);
        }
        
        /* before scene copy */
        sound_create_scene(scen);

        /* world */
        if(type == SCE_COPY_FULL) {
                BKE_copy_animdata_id_action((ID *)scen);
                if(scen->world) {
                        id_us_plus((ID *)scen->world);
                        scen->world= copy_world(scen->world);
                        BKE_copy_animdata_id_action((ID *)scen->world);
                }

                if(sce->ed) {
                        scen->ed= MEM_callocN( sizeof(Editing), "addseq");
                        scen->ed->seqbasep= &scen->ed->seqbase;
                        seqbase_dupli_recursive(sce, scen, &scen->ed->seqbase, &sce->ed->seqbase, SEQ_DUPE_ALL);
                }
        }

        return scen;
}

/* do not free scene itself */
void free_scene(Scene *sce)
{
        Base *base;

        base= sce->base.first;
        while(base) {
                base->object->id.us--;
                base= base->next;
        }
        /* do not free objects! */
        
        if(sce->gpd) {
#if 0   // removed since this can be invalid memory when freeing everything
                // since the grease pencil data is free'd before the scene.
                // since grease pencil data is not (yet?), shared between objects
                // its probably safe not to do this, some save and reload will free this.
                sce->gpd->id.us--;
#endif
                sce->gpd= NULL;
        }

        BLI_freelistN(&sce->base);
        seq_free_editing(sce);

        BKE_free_animdata((ID *)sce);
        BKE_keyingsets_free(&sce->keyingsets);
        
        if (sce->r.avicodecdata) {
                free_avicodecdata(sce->r.avicodecdata);
                MEM_freeN(sce->r.avicodecdata);
                sce->r.avicodecdata = NULL;
        }
        if (sce->r.qtcodecdata) {
                free_qtcodecdata(sce->r.qtcodecdata);
                MEM_freeN(sce->r.qtcodecdata);
                sce->r.qtcodecdata = NULL;
        }
        if (sce->r.ffcodecdata.properties) {
                IDP_FreeProperty(sce->r.ffcodecdata.properties);
                MEM_freeN(sce->r.ffcodecdata.properties);
                sce->r.ffcodecdata.properties = NULL;
        }
        
        BLI_freelistN(&sce->markers);
        BLI_freelistN(&sce->transform_spaces);
        BLI_freelistN(&sce->r.layers);
        
        if(sce->toolsettings) {
                if(sce->toolsettings->vpaint) {
                        free_paint(&sce->toolsettings->vpaint->paint);
                        MEM_freeN(sce->toolsettings->vpaint);
                }
                if(sce->toolsettings->wpaint) {
                        free_paint(&sce->toolsettings->wpaint->paint);
                        MEM_freeN(sce->toolsettings->wpaint);
                }
                if(sce->toolsettings->sculpt) {
                        free_paint(&sce->toolsettings->sculpt->paint);
                        MEM_freeN(sce->toolsettings->sculpt);
                }
                free_paint(&sce->toolsettings->imapaint.paint);

                MEM_freeN(sce->toolsettings);
                sce->toolsettings = NULL;       
        }
        
        if (sce->theDag) {
                free_forest(sce->theDag);
                MEM_freeN(sce->theDag);
        }
        
        if(sce->nodetree) {
                ntreeFreeTree(sce->nodetree);
                MEM_freeN(sce->nodetree);
        }

        if(sce->stats)
                MEM_freeN(sce->stats);
        if(sce->fps_info)
                MEM_freeN(sce->fps_info);

        sound_destroy_scene(sce);
}

Scene *add_scene(const char *name)
{
        Main *bmain= G.main;
        Scene *sce;
        ParticleEditSettings *pset;
        int a;

        sce= alloc_libblock(&bmain->scene, ID_SCE, name);
        sce->lay= sce->layact= 1;
        
        sce->r.mode= R_GAMMA|R_OSA|R_SHADOW|R_SSS|R_ENVMAP|R_RAYTRACE;
        sce->r.cfra= 1;
        sce->r.sfra= 1;
        sce->r.efra= 250;
        sce->r.frame_step= 1;
        sce->r.xsch= 1920;
        sce->r.ysch= 1080;
        sce->r.xasp= 1;
        sce->r.yasp= 1;
        sce->r.xparts= 8;
        sce->r.yparts= 8;
        sce->r.mblur_samples= 1;
        sce->r.filtertype= R_FILTER_MITCH;
        sce->r.size= 50;
        sce->r.planes= 24;
        sce->r.imtype= R_PNG;
        sce->r.quality= 90;
        sce->r.displaymode= R_OUTPUT_AREA;
        sce->r.framapto= 100;
        sce->r.images= 100;
        sce->r.framelen= 1.0;
        sce->r.blurfac= 0.5;
        sce->r.frs_sec= 24;
        sce->r.frs_sec_base= 1;
        sce->r.edgeint= 10;
        sce->r.ocres = 128;
        sce->r.color_mgt_flag |= R_COLOR_MANAGEMENT;
        sce->r.gauss= 1.0;
        
        /* deprecated but keep for upwards compat */
        sce->r.postgamma= 1.0;
        sce->r.posthue= 0.0;
        sce->r.postsat= 1.0;
        
        sce->r.bake_mode= 1;    /* prevent to include render stuff here */
        sce->r.bake_filter= 2;
        sce->r.bake_osa= 5;
        sce->r.bake_flag= R_BAKE_CLEAR;
        sce->r.bake_normal_space= R_BAKE_SPACE_TANGENT;
        sce->r.scemode= R_DOCOMP|R_DOSEQ|R_EXTENSION;
        sce->r.stamp= R_STAMP_TIME|R_STAMP_FRAME|R_STAMP_DATE|R_STAMP_CAMERA|R_STAMP_SCENE|R_STAMP_FILENAME|R_STAMP_RENDERTIME;
        sce->r.stamp_font_id= 12;
        sce->r.fg_stamp[0]= sce->r.fg_stamp[1]= sce->r.fg_stamp[2]= 0.8f;
        sce->r.fg_stamp[3]= 1.0f;
        sce->r.bg_stamp[0]= sce->r.bg_stamp[1]= sce->r.bg_stamp[2]= 0.0f;
        sce->r.bg_stamp[3]= 0.25f;
        sce->r.raytrace_options = R_RAYTRACE_USE_INSTANCES;

        sce->r.seq_prev_type= OB_SOLID;
        sce->r.seq_rend_type= OB_SOLID;
        sce->r.seq_flag= R_SEQ_GL_PREV;

        sce->r.threads= 1;

        sce->r.simplify_subsurf= 6;
        sce->r.simplify_particles= 1.0f;
        sce->r.simplify_shadowsamples= 16;
        sce->r.simplify_aosss= 1.0f;

        sce->r.cineonblack= 95;
        sce->r.cineonwhite= 685;
        sce->r.cineongamma= 1.7f;

        sce->r.border.xmin= 0.0f;
        sce->r.border.ymin= 0.0f;
        sce->r.border.xmax= 1.0f;
        sce->r.border.ymax= 1.0f;
        
        sce->toolsettings = MEM_callocN(sizeof(struct ToolSettings),"Tool Settings Struct");
        sce->toolsettings->cornertype=1;
        sce->toolsettings->degr = 90; 
        sce->toolsettings->step = 9;
        sce->toolsettings->turn = 1;                            
        sce->toolsettings->extr_offs = 1; 
        sce->toolsettings->doublimit = 0.001;
        sce->toolsettings->segments = 32;
        sce->toolsettings->rings = 32;
        sce->toolsettings->vertices = 32;
        sce->toolsettings->editbutflag = 1;
        sce->toolsettings->uvcalc_radius = 1.0f;
        sce->toolsettings->uvcalc_cubesize = 1.0f;
        sce->toolsettings->uvcalc_mapdir = 1;
        sce->toolsettings->uvcalc_mapalign = 1;
        sce->toolsettings->unwrapper = 1;
        sce->toolsettings->select_thresh= 0.01f;
        sce->toolsettings->jointrilimit = 0.8f;

        sce->toolsettings->selectmode= SCE_SELECT_VERTEX;
        sce->toolsettings->uv_selectmode= UV_SELECT_VERTEX;
        sce->toolsettings->normalsize= 0.1;
        sce->toolsettings->autokey_mode= U.autokey_mode;

        sce->toolsettings->skgen_resolution = 100;
        sce->toolsettings->skgen_threshold_internal     = 0.01f;
        sce->toolsettings->skgen_threshold_external     = 0.01f;
        sce->toolsettings->skgen_angle_limit                    = 45.0f;
        sce->toolsettings->skgen_length_ratio                   = 1.3f;
        sce->toolsettings->skgen_length_limit                   = 1.5f;
        sce->toolsettings->skgen_correlation_limit              = 0.98f;
        sce->toolsettings->skgen_symmetry_limit                 = 0.1f;
        sce->toolsettings->skgen_postpro = SKGEN_SMOOTH;
        sce->toolsettings->skgen_postpro_passes = 1;
        sce->toolsettings->skgen_options = SKGEN_FILTER_INTERNAL|SKGEN_FILTER_EXTERNAL|SKGEN_FILTER_SMART|SKGEN_HARMONIC|SKGEN_SUB_CORRELATION|SKGEN_STICK_TO_EMBEDDING;
        sce->toolsettings->skgen_subdivisions[0] = SKGEN_SUB_CORRELATION;
        sce->toolsettings->skgen_subdivisions[1] = SKGEN_SUB_LENGTH;
        sce->toolsettings->skgen_subdivisions[2] = SKGEN_SUB_ANGLE;

        sce->toolsettings->proportional_size = 1.0f;

        sce->physics_settings.gravity[0] = 0.0f;
        sce->physics_settings.gravity[1] = 0.0f;
        sce->physics_settings.gravity[2] = -9.81f;
        sce->physics_settings.flag = PHYS_GLOBAL_GRAVITY;

        sce->unit.scale_length = 1.0f;

        pset= &sce->toolsettings->particle;
        pset->flag= PE_KEEP_LENGTHS|PE_LOCK_FIRST|PE_DEFLECT_EMITTER|PE_AUTO_VELOCITY;
        pset->emitterdist= 0.25f;
        pset->totrekey= 5;
        pset->totaddkey= 5;
        pset->brushtype= PE_BRUSH_NONE;
        pset->draw_step= 2;
        pset->fade_frames= 2;
        pset->selectmode= SCE_SELECT_PATH;
        for(a=0; a<PE_TOT_BRUSH; a++) {
                pset->brush[a].strength= 0.5;
                pset->brush[a].size= 50;
                pset->brush[a].step= 10;
                pset->brush[a].count= 10;
        }
        pset->brush[PE_BRUSH_CUT].strength= 100;

        sce->r.ffcodecdata.audio_mixrate = 44100;
        sce->r.ffcodecdata.audio_volume = 1.0f;
        sce->r.ffcodecdata.audio_bitrate = 192;

        BLI_strncpy(sce->r.engine, "BLENDER_RENDER", sizeof(sce->r.engine));

        sce->audio.distance_model = 2.0;
        sce->audio.doppler_factor = 1.0;
        sce->audio.speed_of_sound = 343.3;

        BLI_strncpy(sce->r.pic, U.renderdir, sizeof(sce->r.pic));

        BLI_init_rctf(&sce->r.safety, 0.1f, 0.9f, 0.1f, 0.9f);
        sce->r.osa= 8;

        /* note; in header_info.c the scene copy happens..., if you add more to renderdata it has to be checked there */
        scene_add_render_layer(sce);
        
        /* game data */
        sce->gm.stereoflag = STEREO_NOSTEREO;
        sce->gm.stereomode = STEREO_ANAGLYPH;
        sce->gm.eyeseparation = 0.10;

        sce->gm.dome.angle = 180;
        sce->gm.dome.mode = DOME_FISHEYE;
        sce->gm.dome.res = 4;
        sce->gm.dome.resbuf = 1.0f;
        sce->gm.dome.tilt = 0;

        sce->gm.xplay= 640;
        sce->gm.yplay= 480;
        sce->gm.freqplay= 60;
        sce->gm.depth= 32;

        sce->gm.gravity= 9.8f;
        sce->gm.physicsEngine= WOPHY_BULLET;
        sce->gm.mode = 32; //XXX ugly harcoding, still not sure we should drop mode. 32 == 1 << 5 == use_occlusion_culling 
        sce->gm.occlusionRes = 128;
        sce->gm.ticrate = 60;
        sce->gm.maxlogicstep = 5;
        sce->gm.physubstep = 1;
        sce->gm.maxphystep = 5;

        sce->gm.flag = GAME_DISPLAY_LISTS;
        sce->gm.matmode = GAME_MAT_MULTITEX;

        sound_create_scene(sce);

        return sce;
}

Base *object_in_scene(Object *ob, Scene *sce)
{
        Base *base;
        
        base= sce->base.first;
        while(base) {
                if(base->object == ob) return base;
                base= base->next;
        }
        return NULL;
}

void set_scene_bg(Main *bmain, Scene *scene)
{
        Scene *sce;
        Base *base;
        Object *ob;
        Group *group;
        GroupObject *go;
        int flag;
        
        /* check for cyclic sets, for reading old files but also for definite security (py?) */
        scene_check_setscene(bmain, scene);
        
        /* can happen when switching modes in other scenes */
        if(scene->obedit && !(scene->obedit->mode & OB_MODE_EDIT))
                scene->obedit= NULL;

        /* deselect objects (for dataselect) */
        for(ob= bmain->object.first; ob; ob= ob->id.next)
                ob->flag &= ~(SELECT|OB_FROMGROUP);

        /* group flags again */
        for(group= bmain->group.first; group; group= group->id.next) {
                go= group->gobject.first;
                while(go) {
                        if(go->ob) go->ob->flag |= OB_FROMGROUP;
                        go= go->next;
                }
        }

        /* sort baselist */
        DAG_scene_sort(bmain, scene);
        
        /* ensure dags are built for sets */
        for(sce= scene->set; sce; sce= sce->set)
                if(sce->theDag==NULL)
                        DAG_scene_sort(bmain, sce);

        /* copy layers and flags from bases to objects */
        for(base= scene->base.first; base; base= base->next) {
                ob= base->object;
                ob->lay= base->lay;
                
                /* group patch... */
                base->flag &= ~(OB_FROMGROUP);
                flag= ob->flag & (OB_FROMGROUP);
                base->flag |= flag;
                
                /* not too nice... for recovering objects with lost data */
                //if(ob->pose==NULL) base->flag &= ~OB_POSEMODE;
                ob->flag= base->flag;
                
                ob->ctime= -1234567.0;  /* force ipo to be calculated later */
        }
        /* no full animation update, this to enable render code to work (render code calls own animation updates) */
}

/* called from creator.c */
Scene *set_scene_name(Main *bmain, const char *name)
{
        Scene *sce= (Scene *)find_id("SC", name);
        if(sce) {
                set_scene_bg(bmain, sce);
                printf("Scene switch: '%s' in file: '%s'\n", name, G.main->name);
                return sce;
        }

        printf("Can't find scene: '%s' in file: '%s'\n", name, G.main->name);
        return NULL;
}

void unlink_scene(Main *bmain, Scene *sce, Scene *newsce)
{
        Scene *sce1;
        bScreen *sc;

        /* check all sets */
        for(sce1= bmain->scene.first; sce1; sce1= sce1->id.next)
                if(sce1->set == sce)
                        sce1->set= NULL;
        
        /* check all sequences */
        clear_scene_in_allseqs(bmain, sce);

        /* check render layer nodes in other scenes */
        clear_scene_in_nodes(bmain, sce);
        
        /* al screens */
        for(sc= bmain->screen.first; sc; sc= sc->id.next)
                if(sc->scene == sce)
                        sc->scene= newsce;

        free_libblock(&bmain->scene, sce);
}

/* used by metaballs
 * doesnt return the original duplicated object, only dupli's
 */
int next_object(Scene **scene, int val, Base **base, Object **ob)
{
        static ListBase *duplilist= NULL;
        static DupliObject *dupob;
        static int fase= F_START, in_next_object= 0;
        int run_again=1;
        
        /* init */
        if(val==0) {
                fase= F_START;
                dupob= NULL;
                
                /* XXX particle systems with metas+dupligroups call this recursively */
                /* see bug #18725 */
                if(in_next_object) {
                        printf("ERROR: MetaBall generation called recursively, not supported\n");
                        
                        return F_ERROR;
                }
        }
        else {
                in_next_object= 1;
                
                /* run_again is set when a duplilist has been ended */
                while(run_again) {
                        run_again= 0;

                        /* the first base */
                        if(fase==F_START) {
                                *base= (*scene)->base.first;
                                if(*base) {
                                        *ob= (*base)->object;
                                        fase= F_SCENE;
                                }
                                else {
                                        /* exception: empty scene */
                                        while((*scene)->set) {
                                                (*scene)= (*scene)->set;
                                                if((*scene)->base.first) {
                                                        *base= (*scene)->base.first;
                                                        *ob= (*base)->object;
                                                        fase= F_SCENE;
                                                        break;
                                                }
                                        }
                                }
                        }
                        else {
                                if(*base && fase!=F_DUPLI) {
                                        *base= (*base)->next;
                                        if(*base) *ob= (*base)->object;
                                        else {
                                                if(fase==F_SCENE) {
                                                        /* (*scene) is finished, now do the set */
                                                        while((*scene)->set) {
                                                                (*scene)= (*scene)->set;
                                                                if((*scene)->base.first) {
                                                                        *base= (*scene)->base.first;
                                                                        *ob= (*base)->object;
                                                                        break;
                                                                }
                                                        }
                                                }
                                        }
                                }
                        }
                        
                        if(*base == NULL) fase= F_START;
                        else {
                                if(fase!=F_DUPLI) {
                                        if( (*base)->object->transflag & OB_DUPLI) {
                                                /* groups cannot be duplicated for mballs yet, 
                                                this enters eternal loop because of 
                                                makeDispListMBall getting called inside of group_duplilist */
                                                if((*base)->object->dup_group == NULL) {
                                                        duplilist= object_duplilist((*scene), (*base)->object);
                                                        
                                                        dupob= duplilist->first;

                                                        if(!dupob)
                                                                free_object_duplilist(duplilist);
                                                }
                                        }
                                }
                                /* handle dupli's */
                                if(dupob) {
                                        
                                        copy_m4_m4(dupob->ob->obmat, dupob->mat);
                                        
                                        (*base)->flag |= OB_FROMDUPLI;
                                        *ob= dupob->ob;
                                        fase= F_DUPLI;
                                        
                                        dupob= dupob->next;
                                }
                                else if(fase==F_DUPLI) {
                                        fase= F_SCENE;
                                        (*base)->flag &= ~OB_FROMDUPLI;
                                        
                                        for(dupob= duplilist->first; dupob; dupob= dupob->next) {
                                                copy_m4_m4(dupob->ob->obmat, dupob->omat);
                                        }
                                        
                                        free_object_duplilist(duplilist);
                                        duplilist= NULL;
                                        run_again= 1;
                                }
                        }
                }
        }
        
        /* if(ob && *ob) {
                printf("Scene: '%s', '%s'\n", (*scene)->id.name+2, (*ob)->id.name+2);
        } */

        /* reset recursion test */
        in_next_object= 0;
        
        return fase;
}

Object *scene_find_camera(Scene *sc)
{
        Base *base;
        
        for (base= sc->base.first; base; base= base->next)
                if (base->object->type==OB_CAMERA)
                        return base->object;

        return NULL;
}

#ifdef DURIAN_CAMERA_SWITCH
Object *scene_camera_switch_find(Scene *scene)
{
        TimeMarker *m;
        int cfra = scene->r.cfra;
        int frame = -(MAXFRAME + 1);
        Object *camera= NULL;

        for (m= scene->markers.first; m; m= m->next) {
                if(m->camera && (m->camera->restrictflag & OB_RESTRICT_RENDER)==0 && (m->frame <= cfra) && (m->frame > frame)) {
                        camera= m->camera;
                        frame= m->frame;

                        if(frame == cfra)
                                break;

                }
        }
        return camera;
}
#endif

int scene_camera_switch_update(Scene *scene)
{
#ifdef DURIAN_CAMERA_SWITCH
        Object *camera= scene_camera_switch_find(scene);
        if(camera) {
                scene->camera= camera;
                return 1;
        }
#endif
        return 0;
}

char *scene_find_marker_name(Scene *scene, int frame)
{
        ListBase *markers= &scene->markers;
        TimeMarker *m1, *m2;

        /* search through markers for match */
        for (m1=markers->first, m2=markers->last; m1 && m2; m1=m1->next, m2=m2->prev) {
                if (m1->frame==frame)
                        return m1->name;

                if (m1 == m2)
                        break;

                if (m2->frame==frame)
                        return m2->name;
        }

        return NULL;
}

/* return the current marker for this frame,
we can have more then 1 marker per frame, this just returns the first :/ */
char *scene_find_last_marker_name(Scene *scene, int frame)
{
        TimeMarker *marker, *best_marker = NULL;
        int best_frame = -MAXFRAME*2;
        for (marker= scene->markers.first; marker; marker= marker->next) {
                if (marker->frame==frame) {
                        return marker->name;
                }

                if ( marker->frame > best_frame && marker->frame < frame) {
                        best_marker = marker;
                        best_frame = marker->frame;
                }
        }

        return best_marker ? best_marker->name : NULL;
}


Base *scene_add_base(Scene *sce, Object *ob)
{
        Base *b= MEM_callocN(sizeof(*b), "scene_add_base");
        BLI_addhead(&sce->base, b);

        b->object= ob;
        b->flag= ob->flag;
        b->lay= ob->lay;

        return b;
}

void scene_deselect_all(Scene *sce)
{
        Base *b;

        for (b= sce->base.first; b; b= b->next) {
                b->flag&= ~SELECT;
                b->object->flag= b->flag;
        }
}

void scene_select_base(Scene *sce, Base *selbase)
{
        scene_deselect_all(sce);

        selbase->flag |= SELECT;
        selbase->object->flag= selbase->flag;

        sce->basact= selbase;
}

/* checks for cycle, returns 1 if it's all OK */
int scene_check_setscene(Main *bmain, Scene *sce)
{
        Scene *scene;
        int a, totscene;
        
        if(sce->set==NULL) return 1;
        
        totscene= 0;
        for(scene= bmain->scene.first; scene; scene= scene->id.next)
                totscene++;
        
        for(a=0, scene=sce; scene->set; scene=scene->set, a++) {
                /* more iterations than scenes means we have a cycle */
                if(a > totscene) {
                        /* the tested scene gets zero'ed, that's typically current scene */
                        sce->set= NULL;
                        return 0;
                }
        }

        return 1;
}

/* This function is needed to cope with fractional frames - including two Blender rendering features
* mblur (motion blur that renders 'subframes' and blurs them together), and fields rendering. */

/* see also bsystem_time in object.c */
float BKE_curframe(Scene *scene)
{
        float ctime = scene->r.cfra;
        ctime+= scene->r.subframe;
        ctime*= scene->r.framelen;      

        return ctime;
}

/* drivers support/hacks 
 *      - this method is called from scene_update_tagged_recursive(), so gets included in viewport + render
 *      - these are always run since the depsgraph can't handle non-object data
 *      - these happen after objects are all done so that we can read in their final transform values,
 *        though this means that objects can't refer to scene info for guidance...
 */
static void scene_update_drivers(Main *UNUSED(bmain), Scene *scene)
{
        float ctime = BKE_curframe(scene);
        
        /* scene itself */
        if (scene->adt && scene->adt->drivers.first) {
                BKE_animsys_evaluate_animdata(&scene->id, scene->adt, ctime, ADT_RECALC_DRIVERS);
        }
        
        /* world */
        // TODO: what about world textures? but then those have nodes too...
        if (scene->world) {
                ID *wid = (ID *)scene->world;
                AnimData *adt= BKE_animdata_from_id(wid);
                
                if (adt && adt->drivers.first)
                        BKE_animsys_evaluate_animdata(wid, adt, ctime, ADT_RECALC_DRIVERS);
        }
        
        /* nodes */
        if (scene->nodetree) {
                ID *nid = (ID *)scene->nodetree;
                AnimData *adt= BKE_animdata_from_id(nid);
                
                if (adt && adt->drivers.first)
                        BKE_animsys_evaluate_animdata(nid, adt, ctime, ADT_RECALC_DRIVERS);
        }
}

static void scene_update_tagged_recursive(Main *bmain, Scene *scene, Scene *scene_parent)
{
        Base *base;
        
        
        scene->customdata_mask= scene_parent->customdata_mask;

        /* sets first, we allow per definition current scene to have
           dependencies on sets, but not the other way around. */
        if (scene->set)
                scene_update_tagged_recursive(bmain, scene->set, scene_parent);
        
        /* scene objects */
        for (base= scene->base.first; base; base= base->next) {
                Object *ob= base->object;
                
                object_handle_update(scene_parent, ob);
                
                if(ob->dup_group && (ob->transflag & OB_DUPLIGROUP))
                        group_handle_recalc_and_update(scene_parent, ob, ob->dup_group);
                        
                /* always update layer, so that animating layers works */
                base->lay= ob->lay;
        }
        
        /* scene drivers... */
        scene_update_drivers(bmain, scene);
}

/* this is called in main loop, doing tagged updates before redraw */
void scene_update_tagged(Main *bmain, Scene *scene)
{
        DAG_ids_flush_tagged(bmain);

        scene->physics_settings.quick_cache_step= 0;

        /* update all objects: drivers, matrices, displists, etc. flags set
           by depgraph or manual, no layer check here, gets correct flushed */

        scene_update_tagged_recursive(bmain, scene, scene);

        /* recalc scene animation data here (for sequencer) */
        {
                AnimData *adt= BKE_animdata_from_id(&scene->id);
                float ctime = BKE_curframe(scene);
                
                if (adt && (adt->recalc & ADT_RECALC_ANIM))
                        BKE_animsys_evaluate_animdata(&scene->id, adt, ctime, 0);
        }
        
        if (scene->physics_settings.quick_cache_step)
                BKE_ptcache_quick_cache_all(bmain, scene);

        /* in the future this should handle updates for all datablocks, not
           only objects and scenes. - brecht */
}

/* applies changes right away, does all sets too */
void scene_update_for_newframe(Main *bmain, Scene *sce, unsigned int lay)
{
        float ctime = BKE_curframe(sce);
        Scene *sce_iter;
        
        /* clear animation overrides */
        // XXX TODO...

        for(sce_iter= sce; sce_iter; sce_iter= sce_iter->set) {
                if(sce_iter->theDag==NULL)
                        DAG_scene_sort(bmain, sce_iter);
        }


        /* Following 2 functions are recursive
         * so dont call within 'scene_update_tagged_recursive' */
        DAG_scene_update_flags(bmain, sce, lay, TRUE);   // only stuff that moves or needs display still

        /* All 'standard' (i.e. without any dependencies) animation is handled here,
         * with an 'local' to 'macro' order of evaluation. This should ensure that
         * settings stored nestled within a hierarchy (i.e. settings in a Texture block
         * can be overridden by settings from Scene, which owns the Texture through a hierarchy
         * such as Scene->World->MTex/Texture) can still get correctly overridden.
         */
        BKE_animsys_evaluate_all_animation(bmain, ctime);
        /*...done with recusrive funcs */

        /* object_handle_update() on all objects, groups and sets */
        scene_update_tagged_recursive(bmain, sce, sce);
}

/* return default layer, also used to patch old files */
void scene_add_render_layer(Scene *sce)
{
        SceneRenderLayer *srl;
//      int tot= 1 + BLI_countlist(&sce->r.layers);
        
        srl= MEM_callocN(sizeof(SceneRenderLayer), "new render layer");
        strcpy(srl->name, "RenderLayer");
        BLI_uniquename(&sce->r.layers, srl, "RenderLayer", '.', offsetof(SceneRenderLayer, name), sizeof(srl->name));
        BLI_addtail(&sce->r.layers, srl);

        /* note, this is also in render, pipeline.c, to make layer when scenedata doesnt have it */
        srl->lay= (1<<20) -1;
        srl->layflag= 0x7FFF;   /* solid ztra halo edge strand */
        srl->passflag= SCE_PASS_COMBINED|SCE_PASS_Z;
}

/* render simplification */

int get_render_subsurf_level(RenderData *r, int lvl)
{
        if(r->mode & R_SIMPLIFY)
                return MIN2(r->simplify_subsurf, lvl);
        else
                return lvl;
}

int get_render_child_particle_number(RenderData *r, int num)
{
        if(r->mode & R_SIMPLIFY)
                return (int)(r->simplify_particles*num);
        else
                return num;
}

int get_render_shadow_samples(RenderData *r, int samples)
{
        if((r->mode & R_SIMPLIFY) && samples > 0)
                return MIN2(r->simplify_shadowsamples, samples);
        else
                return samples;
}

float get_render_aosss_error(RenderData *r, float error)
{
        if(r->mode & R_SIMPLIFY)
                return ((1.0f-r->simplify_aosss)*10.0f + 1.0f)*error;
        else
                return error;
}

/* helper function for the SETLOOPER macro */
Base *_setlooper_base_step(Scene **sce_iter, Base *base)
{
        if(base && base->next) {
                /* common case, step to the next */
                return base->next;
        }
        else if(base==NULL && (*sce_iter)->base.first) {
                /* first time looping, return the scenes first base */
                return (Base *)(*sce_iter)->base.first;
        }
        else {
                /* reached the end, get the next base in the set */
                while((*sce_iter= (*sce_iter)->set)) {
                        base= (Base *)(*sce_iter)->base.first;
                        if(base) {
                                return base;
                        }
                }
        }

        return NULL;
}