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/*
* $Id$
*
* ***** 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_build.c
* \ingroup modifiers
*/
#include "MEM_guardedalloc.h"
#include "BLI_utildefines.h"
#include "BLI_rand.h"
#include "BLI_ghash.h"
#include "DNA_scene_types.h"
#include "DNA_meshdata_types.h"
#include "BKE_cdderivedmesh.h"
#include "BKE_mesh.h"
#include "BKE_modifier.h"
#include "BKE_object.h"
#include "BKE_particle.h"
#include "BKE_scene.h"
#include "MOD_util.h"
static void initData(ModifierData *md)
{
BuildModifierData *bmd = (BuildModifierData*) md;
bmd->start = 1.0;
bmd->length = 100.0;
}
static void copyData(ModifierData *md, ModifierData *target)
{
BuildModifierData *bmd = (BuildModifierData*) md;
BuildModifierData *tbmd = (BuildModifierData*) target;
tbmd->start = bmd->start;
tbmd->length = bmd->length;
tbmd->randomize = bmd->randomize;
tbmd->seed = bmd->seed;
}
static int dependsOnTime(ModifierData *UNUSED(md))
{
return 1;
}
static DerivedMesh *applyModifier(ModifierData *md, Object *ob,
DerivedMesh *derivedData,
int UNUSED(useRenderParams),
int UNUSED(isFinalCalc))
{
DerivedMesh *dm = derivedData;
DerivedMesh *result;
BuildModifierData *bmd = (BuildModifierData*) md;
int i;
int numFaces, numEdges;
int *vertMap, *edgeMap, *faceMap;
float frac;
GHashIterator *hashIter;
/* maps vert indices in old mesh to indices in new mesh */
GHash *vertHash = BLI_ghash_new(BLI_ghashutil_inthash,
BLI_ghashutil_intcmp, "build ve apply gh");
/* maps edge indices in new mesh to indices in old mesh */
GHash *edgeHash = BLI_ghash_new(BLI_ghashutil_inthash,
BLI_ghashutil_intcmp, "build ed apply gh");
const int maxVerts= dm->getNumVerts(dm);
const int maxEdges= dm->getNumEdges(dm);
const int maxFaces= dm->getNumTessFaces(dm);
vertMap = MEM_callocN(sizeof(*vertMap) * maxVerts, "build modifier vertMap");
for(i = 0; i < maxVerts; ++i) vertMap[i] = i;
edgeMap = MEM_callocN(sizeof(*edgeMap) * maxEdges, "build modifier edgeMap");
for(i = 0; i < maxEdges; ++i) edgeMap[i] = i;
faceMap = MEM_callocN(sizeof(*faceMap) * maxFaces, "build modifier faceMap");
for(i = 0; i < maxFaces; ++i) faceMap[i] = i;
if (ob) {
frac = bsystem_time(md->scene, ob, md->scene->r.cfra,
bmd->start - 1.0f) / bmd->length;
} else {
frac = BKE_curframe(md->scene) - bmd->start / bmd->length;
}
CLAMP(frac, 0.0, 1.0);
numFaces = dm->getNumTessFaces(dm) * frac;
numEdges = dm->getNumEdges(dm) * frac;
/* if there's at least one face, build based on faces */
if(numFaces) {
if(bmd->randomize)
BLI_array_randomize(faceMap, sizeof(*faceMap),
maxFaces, bmd->seed);
/* get the set of all vert indices that will be in the final mesh,
* mapped to the new indices
*/
for(i = 0; i < numFaces; ++i) {
MFace mf;
dm->getTessFace(dm, faceMap[i], &mf);
if(!BLI_ghash_haskey(vertHash, SET_INT_IN_POINTER(mf.v1)))
BLI_ghash_insert(vertHash, SET_INT_IN_POINTER(mf.v1),
SET_INT_IN_POINTER(BLI_ghash_size(vertHash)));
if(!BLI_ghash_haskey(vertHash, SET_INT_IN_POINTER(mf.v2)))
BLI_ghash_insert(vertHash, SET_INT_IN_POINTER(mf.v2),
SET_INT_IN_POINTER(BLI_ghash_size(vertHash)));
if(!BLI_ghash_haskey(vertHash, SET_INT_IN_POINTER(mf.v3)))
BLI_ghash_insert(vertHash, SET_INT_IN_POINTER(mf.v3),
SET_INT_IN_POINTER(BLI_ghash_size(vertHash)));
if(mf.v4 && !BLI_ghash_haskey(vertHash, SET_INT_IN_POINTER(mf.v4)))
BLI_ghash_insert(vertHash, SET_INT_IN_POINTER(mf.v4),
SET_INT_IN_POINTER(BLI_ghash_size(vertHash)));
}
/* get the set of edges that will be in the new mesh (i.e. all edges
* that have both verts in the new mesh)
*/
for(i = 0; i < maxEdges; ++i) {
MEdge me;
dm->getEdge(dm, i, &me);
if(BLI_ghash_haskey(vertHash, SET_INT_IN_POINTER(me.v1))
&& BLI_ghash_haskey(vertHash, SET_INT_IN_POINTER(me.v2)))
BLI_ghash_insert(edgeHash,
SET_INT_IN_POINTER(BLI_ghash_size(edgeHash)), SET_INT_IN_POINTER(i));
}
} else if(numEdges) {
if(bmd->randomize)
BLI_array_randomize(edgeMap, sizeof(*edgeMap),
maxEdges, bmd->seed);
/* get the set of all vert indices that will be in the final mesh,
* mapped to the new indices
*/
for(i = 0; i < numEdges; ++i) {
MEdge me;
dm->getEdge(dm, edgeMap[i], &me);
if(!BLI_ghash_haskey(vertHash, SET_INT_IN_POINTER(me.v1)))
BLI_ghash_insert(vertHash, SET_INT_IN_POINTER(me.v1),
SET_INT_IN_POINTER(BLI_ghash_size(vertHash)));
if(!BLI_ghash_haskey(vertHash, SET_INT_IN_POINTER(me.v2)))
BLI_ghash_insert(vertHash, SET_INT_IN_POINTER(me.v2),
SET_INT_IN_POINTER(BLI_ghash_size(vertHash)));
}
/* get the set of edges that will be in the new mesh
*/
for(i = 0; i < numEdges; ++i) {
MEdge me;
dm->getEdge(dm, edgeMap[i], &me);
BLI_ghash_insert(edgeHash, SET_INT_IN_POINTER(BLI_ghash_size(edgeHash)),
SET_INT_IN_POINTER(edgeMap[i]));
}
} else {
int numVerts = dm->getNumVerts(dm) * frac;
if(bmd->randomize)
BLI_array_randomize(vertMap, sizeof(*vertMap),
maxVerts, bmd->seed);
/* get the set of all vert indices that will be in the final mesh,
* mapped to the new indices
*/
for(i = 0; i < numVerts; ++i)
BLI_ghash_insert(vertHash, SET_INT_IN_POINTER(vertMap[i]), SET_INT_IN_POINTER(i));
}
/* now we know the number of verts, edges and faces, we can create
* the mesh
*/
result = CDDM_from_template(dm, BLI_ghash_size(vertHash),
BLI_ghash_size(edgeHash), numFaces, 0, 0);
/* copy the vertices across */
for( hashIter = BLI_ghashIterator_new(vertHash);
!BLI_ghashIterator_isDone(hashIter);
BLI_ghashIterator_step(hashIter)
) {
MVert source;
MVert *dest;
int oldIndex = GET_INT_FROM_POINTER(BLI_ghashIterator_getKey(hashIter));
int newIndex = GET_INT_FROM_POINTER(BLI_ghashIterator_getValue(hashIter));
dm->getVert(dm, oldIndex, &source);
dest = CDDM_get_vert(result, newIndex);
DM_copy_vert_data(dm, result, oldIndex, newIndex, 1);
*dest = source;
}
BLI_ghashIterator_free(hashIter);
/* copy the edges across, remapping indices */
for(i = 0; i < BLI_ghash_size(edgeHash); ++i) {
MEdge source;
MEdge *dest;
int oldIndex = GET_INT_FROM_POINTER(BLI_ghash_lookup(edgeHash, SET_INT_IN_POINTER(i)));
dm->getEdge(dm, oldIndex, &source);
dest = CDDM_get_edge(result, i);
source.v1 = GET_INT_FROM_POINTER(BLI_ghash_lookup(vertHash, SET_INT_IN_POINTER(source.v1)));
source.v2 = GET_INT_FROM_POINTER(BLI_ghash_lookup(vertHash, SET_INT_IN_POINTER(source.v2)));
DM_copy_edge_data(dm, result, oldIndex, i, 1);
*dest = source;
}
/* copy the faces across, remapping indices */
for(i = 0; i < numFaces; ++i) {
MFace source;
MFace *dest;
int orig_v4;
dm->getTessFace(dm, faceMap[i], &source);
dest = CDDM_get_tessface(result, i);
orig_v4 = source.v4;
source.v1 = GET_INT_FROM_POINTER(BLI_ghash_lookup(vertHash, SET_INT_IN_POINTER(source.v1)));
source.v2 = GET_INT_FROM_POINTER(BLI_ghash_lookup(vertHash, SET_INT_IN_POINTER(source.v2)));
source.v3 = GET_INT_FROM_POINTER(BLI_ghash_lookup(vertHash, SET_INT_IN_POINTER(source.v3)));
if(source.v4)
source.v4 = GET_INT_FROM_POINTER(BLI_ghash_lookup(vertHash, SET_INT_IN_POINTER(source.v4)));
DM_copy_face_data(dm, result, faceMap[i], i, 1);
*dest = source;
test_index_face(dest, &result->faceData, i, (orig_v4 ? 4 : 3));
}
CDDM_calc_normals(result);
BLI_ghash_free(vertHash, NULL, NULL);
BLI_ghash_free(edgeHash, NULL, NULL);
MEM_freeN(vertMap);
MEM_freeN(edgeMap);
MEM_freeN(faceMap);
return result;
}
ModifierTypeInfo modifierType_Build = {
/* name */ "Build",
/* structName */ "BuildModifierData",
/* structSize */ sizeof(BuildModifierData),
/* type */ eModifierTypeType_Nonconstructive,
/* flags */ eModifierTypeFlag_AcceptsMesh
| eModifierTypeFlag_AcceptsCVs,
/* copyData */ copyData,
/* deformVerts */ NULL,
/* deformMatrices */ NULL,
/* deformVertsEM */ NULL,
/* deformMatricesEM */ NULL,
/* applyModifier */ applyModifier,
/* applyModifierEM */ NULL,
/* initData */ initData,
/* requiredDataMask */ NULL,
/* freeData */ NULL,
/* isDisabled */ NULL,
/* updateDepgraph */ NULL,
/* dependsOnTime */ dependsOnTime,
/* dependsOnNormals */ NULL,
/* foreachObjectLink */ NULL,
/* foreachIDLink */ NULL
};
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