world.c

Go to the documentation of this file.

/*
 * ***** 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 <string.h>
#include <math.h>
#include "MEM_guardedalloc.h"

#include "DNA_world_types.h"
#include "DNA_scene_types.h"
#include "DNA_texture_types.h"

#include "BLI_listbase.h"
#include "BLI_utildefines.h"
#include "BLI_bpath.h"

#include "BKE_animsys.h"
#include "BKE_global.h"
#include "BKE_icons.h"
#include "BKE_library.h"
#include "BKE_library.h"
#include "BKE_main.h"
#include "BKE_node.h"
#include "BKE_world.h"

void free_world(World *wrld)
{
    MTex *mtex;
    int a;
    
    for(a=0; a<MAX_MTEX; a++) {
        mtex= wrld->mtex[a];
        if(mtex && mtex->tex) mtex->tex->id.us--;
        if(mtex) MEM_freeN(mtex);
    }
    BKE_previewimg_free(&wrld->preview);

    BKE_free_animdata((ID *)wrld);

    /* is no lib link block, but world extension */
    if(wrld->nodetree) {
        ntreeFreeTree(wrld->nodetree);
        MEM_freeN(wrld->nodetree);
    }

    BKE_icon_delete((struct ID*)wrld);
    wrld->id.icon_id = 0;
}


World *add_world(const char *name)
{
    Main *bmain= G.main;
    World *wrld;

    wrld= alloc_libblock(&bmain->world, ID_WO, name);
    
    wrld->horr= 0.05f;
    wrld->horg= 0.05f;
    wrld->horb= 0.05f;
    wrld->zenr= 0.01f;
    wrld->zeng= 0.01f;
    wrld->zenb= 0.01f;
    wrld->skytype= 0;
    wrld->stardist= 15.0f;
    wrld->starsize= 2.0f;
    
    wrld->exp= 0.0f;
    wrld->exposure=wrld->range= 1.0f;

    wrld->aodist= 10.0f;
    wrld->aosamp= 5;
    wrld->aoenergy= 1.0f;
    wrld->ao_env_energy= 1.0f;
    wrld->ao_indirect_energy= 1.0f;
    wrld->ao_indirect_bounces= 1;
    wrld->aobias= 0.05f;
    wrld->ao_samp_method = WO_AOSAMP_HAMMERSLEY;    
    wrld->ao_approx_error= 0.25f;
    
    wrld->preview = NULL;
    wrld->miststa = 5.0f;
    wrld->mistdist = 25.0f;

    return wrld;
}

World *copy_world(World *wrld)
{
    World *wrldn;
    int a;
    
    wrldn= copy_libblock(&wrld->id);
    
    for(a=0; a<MAX_MTEX; a++) {
        if(wrld->mtex[a]) {
            wrldn->mtex[a]= MEM_mallocN(sizeof(MTex), "copy_world");
            memcpy(wrldn->mtex[a], wrld->mtex[a], sizeof(MTex));
            id_us_plus((ID *)wrldn->mtex[a]->tex);
        }
    }

    if(wrld->nodetree)
        wrldn->nodetree= ntreeCopyTree(wrld->nodetree);
    
    if(wrld->preview)
        wrldn->preview = BKE_previewimg_copy(wrld->preview);

    return wrldn;
}

World *localize_world(World *wrld)
{
    World *wrldn;
    int a;
    
    wrldn= copy_libblock(&wrld->id);
    BLI_remlink(&G.main->world, wrldn);
    
    for(a=0; a<MAX_MTEX; a++) {
        if(wrld->mtex[a]) {
            wrldn->mtex[a]= MEM_mallocN(sizeof(MTex), "localize_world");
            memcpy(wrldn->mtex[a], wrld->mtex[a], sizeof(MTex));
            /* free world decrements */
            id_us_plus((ID *)wrldn->mtex[a]->tex);
        }
    }

    if(wrld->nodetree)
        wrldn->nodetree= ntreeLocalize(wrld->nodetree);
    
    wrldn->preview= NULL;
    
    return wrldn;
}

void make_local_world(World *wrld)
{
    Main *bmain= G.main;
    Scene *sce;
    int is_local= FALSE, is_lib= FALSE;

    /* - only lib users: do nothing
        * - only local users: set flag
        * - mixed: make copy
        */
    
    if(wrld->id.lib==NULL) return;
    if(wrld->id.us==1) {
        id_clear_lib_data(bmain, &wrld->id);
        return;
    }
    
    for(sce= bmain->scene.first; sce && ELEM(FALSE, is_lib, is_local); sce= sce->id.next) {
        if(sce->world == wrld) {
            if(sce->id.lib) is_lib= TRUE;
            else is_local= TRUE;
        }
    }

    if(is_local && is_lib==FALSE) {
        id_clear_lib_data(bmain, &wrld->id);
    }
    else if(is_local && is_lib) {
        World *wrld_new= copy_world(wrld);
        wrld_new->id.us= 0;

        /* Remap paths of new ID using old library as base. */
        BKE_id_lib_local_paths(bmain, wrld->id.lib, &wrld_new->id);

        for(sce= bmain->scene.first; sce; sce= sce->id.next) {
            if(sce->world == wrld) {
                if(sce->id.lib==NULL) {
                    sce->world= wrld_new;
                    wrld_new->id.us++;
                    wrld->id.us--;
                }
            }
        }
    }
}