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blender-archive/source/blender/modifiers/intern/MOD_surface.c

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C

/*
* ***** 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 *****
*
*/
/** \file blender/modifiers/intern/MOD_surface.c
* \ingroup modifiers
*/
#include "DNA_scene_types.h"
#include "DNA_object_types.h"
#include "DNA_meshdata_types.h"
#include "BLI_math.h"
#include "BLI_utildefines.h"
#include "BKE_cdderivedmesh.h"
#include "MOD_modifiertypes.h"
#include "MOD_util.h"
#include "MEM_guardedalloc.h"
static void initData(ModifierData *md)
{
SurfaceModifierData *surmd = (SurfaceModifierData *) md;
surmd->bvhtree = NULL;
}
static void freeData(ModifierData *md)
{
SurfaceModifierData *surmd = (SurfaceModifierData *) md;
if (surmd) {
if (surmd->bvhtree) {
free_bvhtree_from_mesh(surmd->bvhtree);
MEM_freeN(surmd->bvhtree);
}
if (surmd->dm)
surmd->dm->release(surmd->dm);
if (surmd->x)
MEM_freeN(surmd->x);
if (surmd->v)
MEM_freeN(surmd->v);
surmd->bvhtree = NULL;
surmd->dm = NULL;
}
}
static bool dependsOnTime(ModifierData *UNUSED(md))
{
return true;
}
static void deformVerts(ModifierData *md, Object *ob,
DerivedMesh *derivedData,
float (*vertexCos)[3],
int UNUSED(numVerts),
ModifierApplyFlag UNUSED(flag))
{
SurfaceModifierData *surmd = (SurfaceModifierData *) md;
if (surmd->dm)
surmd->dm->release(surmd->dm);
/* if possible use/create DerivedMesh */
if (derivedData) surmd->dm = CDDM_copy(derivedData);
else surmd->dm = get_dm(ob, NULL, NULL, NULL, 0);
if (!ob->pd) {
printf("SurfaceModifier deformVerts: Should not happen!\n");
return;
}
if (surmd->dm) {
unsigned int numverts = 0, i = 0;
int init = 0;
float *vec;
MVert *x, *v;
CDDM_apply_vert_coords(surmd->dm, vertexCos);
CDDM_calc_normals(surmd->dm);
numverts = surmd->dm->getNumVerts(surmd->dm);
if (numverts != surmd->numverts ||
surmd->x == NULL ||
surmd->v == NULL ||
md->scene->r.cfra != surmd->cfra + 1)
{
if (surmd->x) {
MEM_freeN(surmd->x);
surmd->x = NULL;
}
if (surmd->v) {
MEM_freeN(surmd->v);
surmd->v = NULL;
}
surmd->x = MEM_callocN(numverts * sizeof(MVert), "MVert");
surmd->v = MEM_callocN(numverts * sizeof(MVert), "MVert");
surmd->numverts = numverts;
init = 1;
}
/* convert to global coordinates and calculate velocity */
for (i = 0, x = surmd->x, v = surmd->v; i < numverts; i++, x++, v++) {
vec = CDDM_get_vert(surmd->dm, i)->co;
mul_m4_v3(ob->obmat, vec);
if (init)
v->co[0] = v->co[1] = v->co[2] = 0.0f;
else
sub_v3_v3v3(v->co, vec, x->co);
copy_v3_v3(x->co, vec);
}
surmd->cfra = md->scene->r.cfra;
if (surmd->bvhtree)
free_bvhtree_from_mesh(surmd->bvhtree);
else
surmd->bvhtree = MEM_callocN(sizeof(BVHTreeFromMesh), "BVHTreeFromMesh");
if (surmd->dm->getNumTessFaces(surmd->dm))
bvhtree_from_mesh_faces(surmd->bvhtree, surmd->dm, 0.0, 2, 6);
else
bvhtree_from_mesh_edges(surmd->bvhtree, surmd->dm, 0.0, 2, 6);
}
}
ModifierTypeInfo modifierType_Surface = {
/* name */ "Surface",
/* structName */ "SurfaceModifierData",
/* structSize */ sizeof(SurfaceModifierData),
/* type */ eModifierTypeType_OnlyDeform,
/* flags */ eModifierTypeFlag_AcceptsMesh |
eModifierTypeFlag_NoUserAdd,
/* copyData */ NULL,
/* deformVerts */ deformVerts,
/* deformMatrices */ NULL,
/* deformVertsEM */ NULL,
/* deformMatricesEM */ NULL,
/* applyModifier */ NULL,
/* applyModifierEM */ NULL,
/* initData */ initData,
/* requiredDataMask */ NULL,
/* freeData */ freeData,
/* isDisabled */ NULL,
/* updateDepgraph */ NULL,
/* dependsOnTime */ dependsOnTime,
/* dependsOnNormals */ NULL,
/* foreachObjectLink */ NULL,
/* foreachIDLink */ NULL,
/* foreachTexLink */ NULL,
};