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/*
* 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) 2015 Blender Foundation.
* All rights reserved.
*/
#include "openvdb_level_set.h"
#include "openvdb_util.h"
#include "openvdb_capi.h"
#include "MEM_guardedalloc.h"
#include "openvdb/tools/Composite.h"
OpenVDBLevelSet::OpenVDBLevelSet()
{
openvdb::initialize();
}
OpenVDBLevelSet::~OpenVDBLevelSet()
{
}
void OpenVDBLevelSet::mesh_to_level_set(const float *vertices,
const unsigned int *faces,
const unsigned int totvertices,
const unsigned int totfaces,
const openvdb::math::Transform::Ptr &xform)
{
std::vector<openvdb::Vec3s> points(totvertices);
std::vector<openvdb::Vec3I> triangles(totfaces);
std::vector<openvdb::Vec4I> quads;
for (unsigned int i = 0; i < totvertices; i++) {
points[i] = openvdb::Vec3s(vertices[i * 3], vertices[i * 3 + 1], vertices[i * 3 + 2]);
}
for (unsigned int i = 0; i < totfaces; i++) {
triangles[i] = openvdb::Vec3I(faces[i * 3], faces[i * 3 + 1], faces[i * 3 + 2]);
}
this->grid = openvdb::tools::meshToLevelSet<openvdb::FloatGrid>(
*xform, points, triangles, quads, 1);
}
void OpenVDBLevelSet::volume_to_mesh(OpenVDBVolumeToMeshData *mesh,
const double isovalue,
const double adaptivity,
const bool relax_disoriented_triangles)
{
std::vector<openvdb::Vec3s> out_points;
std::vector<openvdb::Vec4I> out_quads;
std::vector<openvdb::Vec3I> out_tris;
openvdb::tools::volumeToMesh<openvdb::FloatGrid>(*this->grid,
out_points,
out_tris,
out_quads,
isovalue,
adaptivity,
relax_disoriented_triangles);
mesh->vertices = (float *)MEM_malloc_arrayN(
out_points.size(), 3 * sizeof(float), "openvdb remesher out verts");
mesh->quads = (unsigned int *)MEM_malloc_arrayN(
out_quads.size(), 4 * sizeof(unsigned int), "openvdb remesh out quads");
mesh->triangles = NULL;
if (out_tris.size() > 0) {
mesh->triangles = (unsigned int *)MEM_malloc_arrayN(
out_tris.size(), 3 * sizeof(unsigned int), "openvdb remesh out tris");
}
mesh->totvertices = out_points.size();
mesh->tottriangles = out_tris.size();
mesh->totquads = out_quads.size();
for (size_t i = 0; i < out_points.size(); i++) {
mesh->vertices[i * 3] = out_points[i].x();
mesh->vertices[i * 3 + 1] = out_points[i].y();
mesh->vertices[i * 3 + 2] = out_points[i].z();
}
for (size_t i = 0; i < out_quads.size(); i++) {
mesh->quads[i * 4] = out_quads[i].x();
mesh->quads[i * 4 + 1] = out_quads[i].y();
mesh->quads[i * 4 + 2] = out_quads[i].z();
mesh->quads[i * 4 + 3] = out_quads[i].w();
}
for (size_t i = 0; i < out_tris.size(); i++) {
mesh->triangles[i * 3] = out_tris[i].x();
mesh->triangles[i * 3 + 1] = out_tris[i].y();
mesh->triangles[i * 3 + 2] = out_tris[i].z();
}
}
void OpenVDBLevelSet::filter(OpenVDBLevelSet_FilterType filter_type,
int width,
float distance,
OpenVDBLevelSet_FilterBias filter_bias)
{
if (!this->grid) {
return;
}
if (this->grid->getGridClass() != openvdb::GRID_LEVEL_SET) {
return;
}
openvdb::tools::LevelSetFilter<openvdb::FloatGrid> filter(*this->grid);
filter.setSpatialScheme((openvdb::math::BiasedGradientScheme)filter_bias);
switch (filter_type) {
case OPENVDB_LEVELSET_FILTER_GAUSSIAN:
filter.gaussian(width);
break;
case OPENVDB_LEVELSET_FILTER_MEDIAN:
filter.median(width);
break;
case OPENVDB_LEVELSET_FILTER_MEAN:
filter.mean(width);
break;
case OPENVDB_LEVELSET_FILTER_MEAN_CURVATURE:
filter.meanCurvature();
break;
case OPENVDB_LEVELSET_FILTER_LAPLACIAN:
filter.laplacian();
break;
case OPENVDB_LEVELSET_FILTER_DILATE:
filter.offset(distance);
break;
case OPENVDB_LEVELSET_FILTER_ERODE:
filter.offset(distance);
break;
case OPENVDB_LEVELSET_FILTER_NONE:
break;
}
}
openvdb::FloatGrid::Ptr OpenVDBLevelSet::CSG_operation_apply(
const openvdb::FloatGrid::Ptr &gridA,
const openvdb::FloatGrid::Ptr &gridB,
OpenVDBLevelSet_CSGOperation operation)
{
switch (operation) {
case OPENVDB_LEVELSET_CSG_UNION:
openvdb::tools::csgUnion(*gridA, *gridB);
break;
case OPENVDB_LEVELSET_CSG_DIFFERENCE:
openvdb::tools::csgDifference(*gridA, *gridB);
break;
case OPENVDB_LEVELSET_CSG_INTERSECTION:
openvdb::tools::csgIntersection(*gridA, *gridB);
break;
}
return gridA;
}
const openvdb::FloatGrid::Ptr &OpenVDBLevelSet::get_grid()
{
return this->grid;
}
void OpenVDBLevelSet::set_grid(const openvdb::FloatGrid::Ptr &grid)
{
this->grid = grid;
}
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