MOD_fluidsim.c

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/*
* $Id: MOD_fluidsim.c 35362 2011-03-05 10:29:10Z 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) 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 "DNA_scene_types.h"
#include "DNA_object_fluidsim.h"
#include "DNA_object_types.h"

#include "BLI_utildefines.h"


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

#include "depsgraph_private.h"

#include "MOD_util.h"
#include "MOD_fluidsim_util.h"
#include "MEM_guardedalloc.h"

/* Fluidsim */
static void initData(ModifierData *md)
{
        FluidsimModifierData *fluidmd= (FluidsimModifierData*) md;
        
        fluidsim_init(fluidmd);
}
static void freeData(ModifierData *md)
{
        FluidsimModifierData *fluidmd= (FluidsimModifierData*) md;
        
        fluidsim_free(fluidmd);
}

static void copyData(ModifierData *md, ModifierData *target)
{
        FluidsimModifierData *fluidmd= (FluidsimModifierData*) md;
        FluidsimModifierData *tfluidmd= (FluidsimModifierData*) target;
        
        if(tfluidmd->fss)
                MEM_freeN(tfluidmd->fss);
        
        tfluidmd->fss = MEM_dupallocN(fluidmd->fss);
}



static DerivedMesh *applyModifier(ModifierData *md, Object *ob,
                                                DerivedMesh *dm,
                                                int useRenderParams,
                                                int isFinalCalc)
{
        FluidsimModifierData *fluidmd= (FluidsimModifierData*) md;
        DerivedMesh *result = NULL;
        
        /* check for alloc failing */
        if(!fluidmd->fss)
        {
                initData(md);
                
                if(!fluidmd->fss)
                        return dm;
        }

        result= fluidsimModifier_do(fluidmd, md->scene, ob, dm, useRenderParams, isFinalCalc);

        return result ? result : dm;
}

static void updateDepgraph(
                ModifierData *md, DagForest *forest, Scene *scene,
          Object *ob, DagNode *obNode)
{
        FluidsimModifierData *fluidmd= (FluidsimModifierData*) md;
        Base *base;

        if(fluidmd && fluidmd->fss)
        {
                if(fluidmd->fss->type == OB_FLUIDSIM_DOMAIN)
                {
                        for(base = scene->base.first; base; base= base->next) 
                        {
                                Object *ob1= base->object;
                                if(ob1 != ob)
                                {
                                        FluidsimModifierData *fluidmdtmp = (FluidsimModifierData *)modifiers_findByType(ob1, eModifierType_Fluidsim);
                                        
                                        // only put dependancies from NON-DOMAIN fluids in here
                                        if(fluidmdtmp && fluidmdtmp->fss && (fluidmdtmp->fss->type!=OB_FLUIDSIM_DOMAIN))
                                        {
                                                DagNode *curNode = dag_get_node(forest, ob1);
                                                dag_add_relation(forest, curNode, obNode, DAG_RL_DATA_DATA|DAG_RL_OB_DATA, "Fluidsim Object");
                                        }
                                }
                        }
                }
        }
}

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


ModifierTypeInfo modifierType_Fluidsim = {
        /* name */              "Fluidsim",
        /* structName */        "FluidsimModifierData",
        /* structSize */        sizeof(FluidsimModifierData),
        /* type */              eModifierTypeType_Nonconstructive,

        /* flags */             eModifierTypeFlag_AcceptsMesh
                                                        | eModifierTypeFlag_RequiresOriginalData
                                                        | eModifierTypeFlag_Single,

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