MOD_smoke.c

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/*
 * ***** 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) 2005 by the Blender Foundation.
 * All rights reserved.
 *
 * Contributor(s): Daniel Dunbar
 *                 Ton Roosendaal,
 *                 Ben Batt,
 *                 Brecht Van Lommel,
 *                 Campbell Barton
 *
 * ***** END GPL LICENSE BLOCK *****
 *
 */

#include <stddef.h>

#include "MEM_guardedalloc.h"

#include "DNA_group_types.h"
#include "DNA_object_types.h"
#include "DNA_scene_types.h"
#include "DNA_smoke_types.h"
#include "DNA_object_force.h"

#include "BLI_utildefines.h"


#include "BKE_cdderivedmesh.h"
#include "BKE_modifier.h"
#include "BKE_smoke.h"

#include "depsgraph_private.h"

#include "MOD_util.h"


static void initData(ModifierData *md) 
{
    SmokeModifierData *smd = (SmokeModifierData*) md;
    
    smd->domain = NULL;
    smd->flow = NULL;
    smd->coll = NULL;
    smd->type = 0;
    smd->time = -1;
}

static void copyData(ModifierData *md, ModifierData *target)
{
    SmokeModifierData *smd  = (SmokeModifierData*)md;
    SmokeModifierData *tsmd = (SmokeModifierData*)target;
    
    smokeModifier_copy(smd, tsmd);
}

static void freeData(ModifierData *md)
{
    SmokeModifierData *smd = (SmokeModifierData*) md;
    
    smokeModifier_free (smd);
}

static void deformVerts(ModifierData *md, Object *ob,
                        DerivedMesh *derivedData,
                        float (*vertexCos)[3],
                        int UNUSED(numVerts),
                        int UNUSED(useRenderParams),
                        int UNUSED(isFinalCalc))
{
    SmokeModifierData *smd = (SmokeModifierData*) md;
    DerivedMesh *dm = get_cddm(ob, NULL, derivedData, vertexCos);

    smokeModifier_do(smd, md->scene, ob, dm);

    if(dm != derivedData)
        dm->release(dm);
}

static int dependsOnTime(ModifierData *UNUSED(md))
{
    return 1;
}

static void updateDepgraph(ModifierData *md, DagForest *forest,
                        struct Scene *scene,
                        Object *UNUSED(ob),
                        DagNode *obNode)
{
    SmokeModifierData *smd = (SmokeModifierData *) md;

    if(smd && (smd->type & MOD_SMOKE_TYPE_DOMAIN) && smd->domain)
    {
        if(smd->domain->fluid_group)
        {
            GroupObject *go = NULL;
            
            for(go = smd->domain->fluid_group->gobject.first; go; go = go->next) 
            {
                if(go->ob)
                {
                    SmokeModifierData *smd2 = (SmokeModifierData *)modifiers_findByType(go->ob, eModifierType_Smoke);
                    
                    // check for initialized smoke object
                    if(smd2 && (((smd2->type & MOD_SMOKE_TYPE_FLOW) && smd2->flow) || ((smd->type & MOD_SMOKE_TYPE_COLL) && smd2->coll)))
                    {
                        DagNode *curNode = dag_get_node(forest, go->ob);
                        dag_add_relation(forest, curNode, obNode, DAG_RL_DATA_DATA|DAG_RL_OB_DATA, "Smoke Flow");
                    }
                }
            }
        }
        else {
            Base *base = scene->base.first;

            for(; base; base = base->next) {
                SmokeModifierData *smd2 = (SmokeModifierData *)modifiers_findByType(base->object, eModifierType_Smoke);

                if(smd2 && (((smd2->type & MOD_SMOKE_TYPE_FLOW) && smd2->flow) || ((smd->type & MOD_SMOKE_TYPE_COLL) && smd2->coll)))
                {
                    DagNode *curNode = dag_get_node(forest, base->object);
                    dag_add_relation(forest, curNode, obNode, DAG_RL_DATA_DATA|DAG_RL_OB_DATA, "Smoke Flow");
                }
            }
        }
    }
}

static void foreachIDLink(ModifierData *md, Object *ob,
                       IDWalkFunc walk, void *userData)
{
    SmokeModifierData *smd = (SmokeModifierData*) md;

    if(smd->type==MOD_SMOKE_TYPE_DOMAIN && smd->domain) {
        walk(userData, ob, (ID **)&smd->domain->coll_group);
        walk(userData, ob, (ID **)&smd->domain->fluid_group);
        walk(userData, ob, (ID **)&smd->domain->eff_group);

        if(smd->domain->effector_weights) {
            walk(userData, ob, (ID **)&smd->domain->effector_weights->group);
        }
    }
}

ModifierTypeInfo modifierType_Smoke = {
    /* name */              "Smoke",
    /* structName */        "SmokeModifierData",
    /* structSize */        sizeof(SmokeModifierData),
    /* type */              eModifierTypeType_OnlyDeform,
    /* flags */             eModifierTypeFlag_AcceptsMesh
                            | eModifierTypeFlag_UsesPointCache
                            | eModifierTypeFlag_Single,

    /* copyData */          copyData,
    /* deformVerts */       deformVerts,
    /* deformMatrices */    NULL,
    /* deformVertsEM */     NULL,
    /* deformMatricesEM */  NULL,
    /* applyModifier */     NULL,
    /* applyModifierEM */   NULL,
    /* initData */          initData,
    /* requiredDataMask */  NULL,
    /* freeData */          freeData,
    /* isDisabled */        NULL,
    /* updateDepgraph */    updateDepgraph,
    /* dependsOnTime */     dependsOnTime,
    /* dependsOnNormals */  NULL,
    /* foreachObjectLink */ NULL,
    /* foreachIDLink */     foreachIDLink,
    /* foreachTexLink */    NULL
};