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blender-archive/source/blender/blenkernel/intern/CCGSubSurf_opensubdiv_converter.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.
*
* ***** END GPL LICENSE BLOCK *****
*/
/** \file blender/blenkernel/intern/CCGSubSurf_opensubdiv_converter.c
* \ingroup bke
*/
#ifdef WITH_OPENSUBDIV
#include <stdlib.h>
#include "MEM_guardedalloc.h"
#include "BLI_sys_types.h" // for intptr_t support
#include "BLI_utildefines.h" /* for BLI_assert */
#include "BLI_math.h"
#include "CCGSubSurf.h"
#include "CCGSubSurf_intern.h"
#include "BKE_DerivedMesh.h"
#include "BKE_mesh_mapping.h"
#include "opensubdiv_capi.h"
#include "opensubdiv_converter_capi.h"
/* Use mesh element mapping structures during conversion.
* Uses more memory but is much faster than naive algorithm.
*/
#define USE_MESH_ELEMENT_MAPPING
/**
* Converter from DerivedMesh.
*/
typedef struct ConvDMStorage {
CCGSubSurf *ss;
DerivedMesh *dm;
#ifdef USE_MESH_ELEMENT_MAPPING
MeshElemMap *vert_edge_map,
*vert_poly_map,
*edge_poly_map;
int *vert_edge_mem,
*vert_poly_mem,
*edge_poly_mem;
#endif
} ConvDMStorage;
static OpenSubdiv_SchemeType conv_dm_get_type(
const OpenSubdiv_Converter *converter)
{
ConvDMStorage *storage = converter->user_data;
if (storage->ss->meshIFC.simpleSubdiv)
return OSD_SCHEME_BILINEAR;
else
return OSD_SCHEME_CATMARK;
}
static int conv_dm_get_num_faces(const OpenSubdiv_Converter *converter)
{
ConvDMStorage *storage = converter->user_data;
DerivedMesh *dm = storage->dm;
return dm->getNumPolys(dm);
}
static int conv_dm_get_num_edges(const OpenSubdiv_Converter *converter)
{
ConvDMStorage *storage = converter->user_data;
DerivedMesh *dm = storage->dm;
return dm->getNumEdges(dm);
}
static int conv_dm_get_num_verts(const OpenSubdiv_Converter *converter)
{
ConvDMStorage *storage = converter->user_data;
DerivedMesh *dm = storage->dm;
return dm->getNumVerts(dm);
}
static int conv_dm_get_num_face_verts(const OpenSubdiv_Converter *converter,
int face)
{
ConvDMStorage *storage = converter->user_data;
DerivedMesh *dm = storage->dm;
const MPoly *mp = dm->getPolyArray(dm);
const MPoly *mpoly = &mp[face];
return mpoly->totloop;
}
static void conv_dm_get_face_verts(const OpenSubdiv_Converter *converter,
int face,
int *face_verts)
{
ConvDMStorage *storage = converter->user_data;
DerivedMesh *dm = storage->dm;
const MLoop *ml = dm->getLoopArray(dm);
const MPoly *mp = dm->getPolyArray(dm);
const MPoly *mpoly = &mp[face];
int loop;
for (loop = 0; loop < mpoly->totloop; loop++) {
face_verts[loop] = ml[mpoly->loopstart + loop].v;
}
}
static void conv_dm_get_face_edges(const OpenSubdiv_Converter *converter,
int face,
int *face_edges)
{
ConvDMStorage *storage = converter->user_data;
DerivedMesh *dm = storage->dm;
const MLoop *ml = dm->getLoopArray(dm);
const MPoly *mp = dm->getPolyArray(dm);
const MPoly *mpoly = &mp[face];
int loop;
for (loop = 0; loop < mpoly->totloop; loop++) {
face_edges[loop] = ml[mpoly->loopstart + loop].e;
}
}
static void conv_dm_get_edge_verts(const OpenSubdiv_Converter *converter,
int edge,
int *edge_verts)
{
ConvDMStorage *storage = converter->user_data;
DerivedMesh *dm = storage->dm;
const MEdge *me = dm->getEdgeArray(dm);
const MEdge *medge = &me[edge];
edge_verts[0] = medge->v1;
edge_verts[1] = medge->v2;
}
static int conv_dm_get_num_edge_faces(const OpenSubdiv_Converter *converter,
int edge)
{
ConvDMStorage *storage = converter->user_data;
#ifndef USE_MESH_ELEMENT_MAPPING
DerivedMesh *dm = storage->dm;
const MLoop *ml = dm->getLoopArray(dm);
const MPoly *mp = dm->getPolyArray(dm);
int num = 0, poly;
for (poly = 0; poly < dm->getNumPolys(dm); poly++) {
const MPoly *mpoly = &mp[poly];
int loop;
for (loop = 0; loop < mpoly->totloop; loop++) {
const MLoop *mloop = &ml[mpoly->loopstart + loop];
if (mloop->e == edge) {
++num;
break;
}
}
}
return num;
#else
return storage->edge_poly_map[edge].count;
#endif
}
static void conv_dm_get_edge_faces(const OpenSubdiv_Converter *converter,
int edge,
int *edge_faces)
{
ConvDMStorage *storage = converter->user_data;
#ifndef USE_MESH_ELEMENT_MAPPING
DerivedMesh *dm = storage->dm;
const MLoop *ml = dm->getLoopArray(dm);
const MPoly *mp = dm->getPolyArray(dm);
int num = 0, poly;
for (poly = 0; poly < dm->getNumPolys(dm); poly++) {
const MPoly *mpoly = &mp[poly];
int loop;
for (loop = 0; loop < mpoly->totloop; loop++) {
const MLoop *mloop = &ml[mpoly->loopstart + loop];
if (mloop->e == edge) {
edge_faces[num++] = poly;
break;
}
}
}
#else
memcpy(edge_faces,
storage->edge_poly_map[edge].indices,
sizeof(int) * storage->edge_poly_map[edge].count);
#endif
}
static float conv_dm_get_edge_sharpness(const OpenSubdiv_Converter *converter,
int edge)
{
ConvDMStorage *storage = converter->user_data;
DerivedMesh *dm = storage->dm;
CCGSubSurf *ss = storage->ss;
const MEdge *medge = dm->getEdgeArray(dm);
return (float)medge[edge].crease / 255.0f * ss->subdivLevels;
}
static int conv_dm_get_num_vert_edges(const OpenSubdiv_Converter *converter,
int vert)
{
ConvDMStorage *storage = converter->user_data;
#ifndef USE_MESH_ELEMENT_MAPPING
DerivedMesh *dm = storage->dm;
const MEdge *me = dm->getEdgeArray(dm);
int num = 0, edge;
for (edge = 0; edge < dm->getNumEdges(dm); edge++) {
const MEdge *medge = &me[edge];
if (medge->v1 == vert || medge->v2 == vert) {
++num;
}
}
return num;
#else
return storage->vert_edge_map[vert].count;
#endif
}
static void conv_dm_get_vert_edges(const OpenSubdiv_Converter *converter,
int vert,
int *vert_edges)
{
ConvDMStorage *storage = converter->user_data;
#ifndef USE_MESH_ELEMENT_MAPPING
DerivedMesh *dm = storage->dm;
const MEdge *me = dm->getEdgeArray(dm);
int num = 0, edge;
for (edge = 0; edge < dm->getNumEdges(dm); edge++) {
const MEdge *medge = &me[edge];
if (medge->v1 == vert || medge->v2 == vert) {
vert_edges[num++] = edge;
}
}
#else
memcpy(vert_edges,
storage->vert_edge_map[vert].indices,
sizeof(int) * storage->vert_edge_map[vert].count);
#endif
}
static int conv_dm_get_num_vert_faces(const OpenSubdiv_Converter *converter,
int vert)
{
ConvDMStorage *storage = converter->user_data;
#ifndef USE_MESH_ELEMENT_MAPPING
DerivedMesh *dm = storage->dm;
const MLoop *ml = dm->getLoopArray(dm);
const MPoly *mp = dm->getPolyArray(dm);
int num = 0, poly;
for (poly = 0; poly < dm->getNumPolys(dm); poly++) {
const MPoly *mpoly = &mp[poly];
int loop;
for (loop = 0; loop < mpoly->totloop; loop++) {
const MLoop *mloop = &ml[mpoly->loopstart + loop];
if (mloop->v == vert) {
++num;
break;
}
}
}
return num;
#else
return storage->vert_poly_map[vert].count;
#endif
}
static void conv_dm_get_vert_faces(const OpenSubdiv_Converter *converter,
int vert,
int *vert_faces)
{
ConvDMStorage *storage = converter->user_data;
#ifndef USE_MESH_ELEMENT_MAPPING
DerivedMesh *dm = storage->dm;
const MLoop *ml = dm->getLoopArray(dm);
const MPoly *mp = dm->getPolyArray(dm);
int num = 0, poly;
for (poly = 0; poly < dm->getNumPolys(dm); poly++) {
const MPoly *mpoly = &mp[poly];
int loop;
for (loop = 0; loop < mpoly->totloop; loop++) {
const MLoop *mloop = &ml[mpoly->loopstart + loop];
if (mloop->v == vert) {
vert_faces[num++] = poly;
break;
}
}
}
#else
memcpy(vert_faces,
storage->vert_poly_map[vert].indices,
sizeof(int) * storage->vert_poly_map[vert].count);
#endif
}
static void conv_dm_free_user_data(const OpenSubdiv_Converter *converter)
{
ConvDMStorage *user_data = converter->user_data;
#ifdef USE_MESH_ELEMENT_MAPPING
MEM_freeN(user_data->vert_edge_map);
MEM_freeN(user_data->vert_edge_mem);
MEM_freeN(user_data->vert_poly_map);
MEM_freeN(user_data->vert_poly_mem);
MEM_freeN(user_data->edge_poly_map);
MEM_freeN(user_data->edge_poly_mem);
#endif
MEM_freeN(user_data);
}
void ccgSubSurf_converter_setup_from_derivedmesh(
CCGSubSurf *ss,
DerivedMesh *dm,
OpenSubdiv_Converter *converter)
{
ConvDMStorage *user_data;
converter->get_type = conv_dm_get_type;
converter->get_num_faces = conv_dm_get_num_faces;
converter->get_num_edges = conv_dm_get_num_edges;
converter->get_num_verts = conv_dm_get_num_verts;
converter->get_num_face_verts = conv_dm_get_num_face_verts;
converter->get_face_verts = conv_dm_get_face_verts;
converter->get_face_edges = conv_dm_get_face_edges;
converter->get_edge_verts = conv_dm_get_edge_verts;
converter->get_num_edge_faces = conv_dm_get_num_edge_faces;
converter->get_edge_faces = conv_dm_get_edge_faces;
converter->get_edge_sharpness = conv_dm_get_edge_sharpness;
converter->get_num_vert_edges = conv_dm_get_num_vert_edges;
converter->get_vert_edges = conv_dm_get_vert_edges;
converter->get_num_vert_faces = conv_dm_get_num_vert_faces;
converter->get_vert_faces = conv_dm_get_vert_faces;
user_data = MEM_mallocN(sizeof(ConvDMStorage), __func__);
user_data->ss = ss;
user_data->dm = dm;
converter->free_user_data = conv_dm_free_user_data;
converter->user_data = user_data;
#ifdef USE_MESH_ELEMENT_MAPPING
{
const MEdge *medge = dm->getEdgeArray(dm);
const MLoop *mloop = dm->getLoopArray(dm);
const MPoly *mpoly = dm->getPolyArray(dm);
const int num_vert = dm->getNumVerts(dm),
num_edge = dm->getNumEdges(dm),
num_loop = dm->getNumLoops(dm),
num_poly = dm->getNumPolys(dm);
BKE_mesh_vert_edge_map_create(&user_data->vert_edge_map,
&user_data->vert_edge_mem,
medge,
num_vert,
num_edge);
BKE_mesh_vert_poly_map_create(&user_data->vert_poly_map,
&user_data->vert_poly_mem,
mpoly,
mloop,
num_vert,
num_poly,
num_loop);
BKE_mesh_edge_poly_map_create(&user_data->edge_poly_map,
&user_data->edge_poly_mem,
medge,
num_edge,
mpoly,
num_poly,
mloop,
num_loop);
}
#endif /* USE_MESH_ELEMENT_MAPPING */
}
/**
* Converter from CCGSubSurf
*/
static OpenSubdiv_SchemeType conv_ccg_get_bilinear_type(
const OpenSubdiv_Converter *converter)
{
CCGSubSurf *ss = converter->user_data;
if (ss->meshIFC.simpleSubdiv) {
return OSD_SCHEME_BILINEAR;
}
else {
return OSD_SCHEME_CATMARK;
}
}
static int conv_ccg_get_num_faces(const OpenSubdiv_Converter *converter)
{
CCGSubSurf *ss = converter->user_data;
return ss->fMap->numEntries;
}
static int conv_ccg_get_num_edges(const OpenSubdiv_Converter *converter)
{
CCGSubSurf *ss = converter->user_data;
return ss->eMap->numEntries;
}
static int conv_ccg_get_num_verts(const OpenSubdiv_Converter *converter)
{
CCGSubSurf *ss = converter->user_data;
return ss->vMap->numEntries;
}
static int conv_ccg_get_num_face_verts(const OpenSubdiv_Converter *converter,
int face)
{
CCGSubSurf *ss = converter->user_data;
CCGFace *ccg_face = ccgSubSurf_getFace(ss, SET_INT_IN_POINTER(face));
return ccgSubSurf_getFaceNumVerts(ccg_face);
}
static void conv_ccg_get_face_verts(const OpenSubdiv_Converter *converter,
int face,
int *face_verts)
{
CCGSubSurf *ss = converter->user_data;
CCGFace *ccg_face = ccgSubSurf_getFace(ss, SET_INT_IN_POINTER(face));
int num_face_verts = ccgSubSurf_getFaceNumVerts(ccg_face);
int loop;
for (loop = 0; loop < num_face_verts; loop++) {
CCGVert *ccg_vert = ccgSubSurf_getFaceVert(ccg_face, loop);
face_verts[loop] = GET_INT_FROM_POINTER(ccgSubSurf_getVertVertHandle(ccg_vert));
}
}
static void conv_ccg_get_face_edges(const OpenSubdiv_Converter *converter,
int face,
int *face_edges)
{
CCGSubSurf *ss = converter->user_data;
CCGFace *ccg_face = ccgSubSurf_getFace(ss, SET_INT_IN_POINTER(face));
int num_face_verts = ccgSubSurf_getFaceNumVerts(ccg_face);
int loop;
for (loop = 0; loop < num_face_verts; loop++) {
CCGEdge *ccg_edge = ccgSubSurf_getFaceEdge(ccg_face, loop);
face_edges[loop] = GET_INT_FROM_POINTER(ccgSubSurf_getEdgeEdgeHandle(ccg_edge));
}
}
static void conv_ccg_get_edge_verts(const OpenSubdiv_Converter *converter,
int edge,
int *edge_verts)
{
CCGSubSurf *ss = converter->user_data;
CCGEdge *ccg_edge = ccgSubSurf_getEdge(ss, SET_INT_IN_POINTER(edge));
CCGVert *ccg_vert0 = ccgSubSurf_getEdgeVert0(ccg_edge);
CCGVert *ccg_vert1 = ccgSubSurf_getEdgeVert1(ccg_edge);
edge_verts[0] = GET_INT_FROM_POINTER(ccgSubSurf_getVertVertHandle(ccg_vert0));
edge_verts[1] = GET_INT_FROM_POINTER(ccgSubSurf_getVertVertHandle(ccg_vert1));
}
static int conv_ccg_get_num_edge_faces(const OpenSubdiv_Converter *converter,
int edge)
{
CCGSubSurf *ss = converter->user_data;
CCGEdge *ccg_edge = ccgSubSurf_getEdge(ss, SET_INT_IN_POINTER(edge));
return ccgSubSurf_getEdgeNumFaces(ccg_edge);
}
static void conv_ccg_get_edge_faces(const OpenSubdiv_Converter *converter,
int edge,
int *edge_faces)
{
CCGSubSurf *ss = converter->user_data;
CCGEdge *ccg_edge = ccgSubSurf_getEdge(ss, SET_INT_IN_POINTER(edge));
int num_edge_faces = ccgSubSurf_getEdgeNumFaces(ccg_edge);
int face;
for (face = 0; face < num_edge_faces; face++) {
CCGFace *ccg_face = ccgSubSurf_getEdgeFace(ccg_edge, face);
edge_faces[face] = GET_INT_FROM_POINTER(ccgSubSurf_getFaceFaceHandle(ccg_face));
}
}
static float conv_ccg_get_edge_sharpness(const OpenSubdiv_Converter *converter,
int edge)
{
CCGSubSurf *ss = converter->user_data;
CCGEdge *ccg_edge = ccgSubSurf_getEdge(ss, SET_INT_IN_POINTER(edge));
/* TODO(sergey): Multiply by subdivision level once CPU evaluator
* is switched to uniform subdivision type.
*/
return ccg_edge->crease;
}
static int conv_ccg_get_num_vert_edges(const OpenSubdiv_Converter *converter,
int vert)
{
CCGSubSurf *ss = converter->user_data;
CCGVert *ccg_vert = ccgSubSurf_getVert(ss, SET_INT_IN_POINTER(vert));
return ccgSubSurf_getVertNumEdges(ccg_vert);
}
static void conv_ccg_get_vert_edges(const OpenSubdiv_Converter *converter,
int vert,
int *vert_edges)
{
CCGSubSurf *ss = converter->user_data;
CCGVert *ccg_vert = ccgSubSurf_getVert(ss, SET_INT_IN_POINTER(vert));
int num_vert_edges = ccgSubSurf_getVertNumEdges(ccg_vert);
int edge;
for (edge = 0; edge < num_vert_edges; edge++) {
CCGEdge *ccg_edge = ccgSubSurf_getVertEdge(ccg_vert, edge);
vert_edges[edge] = GET_INT_FROM_POINTER(ccgSubSurf_getEdgeEdgeHandle(ccg_edge));
}
}
static int conv_ccg_get_num_vert_faces(const OpenSubdiv_Converter *converter,
int vert)
{
CCGSubSurf *ss = converter->user_data;
CCGVert *ccg_vert = ccgSubSurf_getVert(ss, SET_INT_IN_POINTER(vert));
return ccgSubSurf_getVertNumFaces(ccg_vert);
}
static void conv_ccg_get_vert_faces(const OpenSubdiv_Converter *converter,
int vert,
int *vert_faces)
{
CCGSubSurf *ss = converter->user_data;
CCGVert *ccg_vert = ccgSubSurf_getVert(ss, SET_INT_IN_POINTER(vert));
int num_vert_faces = ccgSubSurf_getVertNumFaces(ccg_vert);
int face;
for (face = 0; face < num_vert_faces; face++) {
CCGFace *ccg_face = ccgSubSurf_getVertFace(ccg_vert, face);
vert_faces[face] = GET_INT_FROM_POINTER(ccgSubSurf_getFaceFaceHandle(ccg_face));
}
}
void ccgSubSurf_converter_setup_from_ccg(CCGSubSurf *ss,
OpenSubdiv_Converter *converter)
{
converter->get_type = conv_ccg_get_bilinear_type;
converter->get_num_faces = conv_ccg_get_num_faces;
converter->get_num_edges = conv_ccg_get_num_edges;
converter->get_num_verts = conv_ccg_get_num_verts;
converter->get_num_face_verts = conv_ccg_get_num_face_verts;
converter->get_face_verts = conv_ccg_get_face_verts;
converter->get_face_edges = conv_ccg_get_face_edges;
converter->get_edge_verts = conv_ccg_get_edge_verts;
converter->get_num_edge_faces = conv_ccg_get_num_edge_faces;
converter->get_edge_faces = conv_ccg_get_edge_faces;
converter->get_edge_sharpness = conv_ccg_get_edge_sharpness;
converter->get_num_vert_edges = conv_ccg_get_num_vert_edges;
converter->get_vert_edges = conv_ccg_get_vert_edges;
converter->get_num_vert_faces = conv_ccg_get_num_vert_faces;
converter->get_vert_faces = conv_ccg_get_vert_faces;
converter->free_user_data = NULL;
converter->user_data = ss;
}
void ccgSubSurf_converter_free(
struct OpenSubdiv_Converter *converter)
{
if (converter->free_user_data) {
converter->free_user_data(converter);
}
}
#endif /* WITH_OPENSUBDIV */