fluidsim.c

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/*
 * $Id: fluidsim.c 35247 2011-02-27 20:40:57Z jesterking $
 *
 * ***** 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) Blender Foundation
 * All rights reserved.
 *
 * The Original Code is: all of this file.
 *
 * Contributor(s): none yet.
 *
 * ***** END GPL LICENSE BLOCK *****
 */

#include <stddef.h>
#include "BLI_storage.h" /* _LARGEFILE_SOURCE */

#include "MEM_guardedalloc.h"

#include "DNA_mesh_types.h"
#include "DNA_meshdata_types.h"
#include "DNA_object_fluidsim.h"
#include "DNA_object_force.h" // for pointcache 
#include "DNA_object_types.h"
#include "DNA_particle_types.h"
#include "DNA_scene_types.h" // N_T

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

#include "BKE_cdderivedmesh.h"
#include "BKE_customdata.h"
#include "BKE_DerivedMesh.h"
#include "BKE_fluidsim.h"
#include "BKE_global.h"
#include "BKE_modifier.h"
#include "BKE_mesh.h"


// headers for fluidsim bobj meshes
#include <stdlib.h>
#include "LBM_fluidsim.h"
#include <zlib.h>
#include <string.h>
#include <stdio.h>

/* ************************* fluidsim bobj file handling **************************** */


//-------------------------------------------------------------------------------
// file handling
//-------------------------------------------------------------------------------

void initElbeemMesh(struct Scene *scene, struct Object *ob,
                        int *numVertices, float **vertices,
          int *numTriangles, int **triangles,
          int useGlobalCoords, int modifierIndex)
{
        DerivedMesh *dm = NULL;
        MVert *mvert;
        MFace *mface;
        int countTris=0, i, totvert, totface;
        float *verts;
        int *tris;

        dm = mesh_create_derived_index_render(scene, ob, CD_MASK_BAREMESH, modifierIndex);
        //dm = mesh_create_derived_no_deform(ob,NULL);

        mvert = dm->getVertArray(dm);
        mface = dm->getFaceArray(dm);
        totvert = dm->getNumVerts(dm);
        totface = dm->getNumFaces(dm);

        *numVertices = totvert;
        verts = MEM_callocN( totvert*3*sizeof(float), "elbeemmesh_vertices");
        for(i=0; i<totvert; i++) {
                VECCOPY( &verts[i*3], mvert[i].co);
                if(useGlobalCoords) { mul_m4_v3(ob->obmat, &verts[i*3]); }
        }
        *vertices = verts;

        for(i=0; i<totface; i++) {
                countTris++;
                if(mface[i].v4) { countTris++; }
        }
        *numTriangles = countTris;
        tris = MEM_callocN( countTris*3*sizeof(int), "elbeemmesh_triangles");
        countTris = 0;
        for(i=0; i<totface; i++) {
                int face[4];
                face[0] = mface[i].v1;
                face[1] = mface[i].v2;
                face[2] = mface[i].v3;
                face[3] = mface[i].v4;

                tris[countTris*3+0] = face[0];
                tris[countTris*3+1] = face[1];
                tris[countTris*3+2] = face[2];
                countTris++;
                if(face[3]) {
                        tris[countTris*3+0] = face[0];
                        tris[countTris*3+1] = face[2];
                        tris[countTris*3+2] = face[3];
                        countTris++;
                }
        }
        *triangles = tris;

        dm->release(dm);
}