169 lines
6.5 KiB
C++
169 lines
6.5 KiB
C++
/*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* The Original Code is Copyright (C) 2015 Blender Foundation.
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* All rights reserved.
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*/
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#include "openvdb_capi.h"
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#include "openvdb_level_set.h"
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#include "openvdb_transform.h"
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#include "openvdb_util.h"
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int OpenVDB_getVersionHex()
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{
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return openvdb::OPENVDB_LIBRARY_VERSION;
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}
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OpenVDBLevelSet *OpenVDBLevelSet_create(bool initGrid, OpenVDBTransform *xform)
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{
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OpenVDBLevelSet *level_set = new OpenVDBLevelSet();
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if (initGrid) {
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openvdb::FloatGrid::Ptr grid = openvdb::FloatGrid::create();
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grid->setGridClass(openvdb::GRID_LEVEL_SET);
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if (xform) {
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grid->setTransform(xform->get_transform());
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}
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level_set->set_grid(grid);
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}
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return level_set;
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}
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OpenVDBTransform *OpenVDBTransform_create()
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{
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return new OpenVDBTransform();
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}
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void OpenVDBTransform_free(OpenVDBTransform *transform)
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{
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delete transform;
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}
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void OpenVDBTransform_create_linear_transform(OpenVDBTransform *transform, double voxel_size)
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{
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transform->create_linear_transform(voxel_size);
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}
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void OpenVDBLevelSet_free(OpenVDBLevelSet *level_set)
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{
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delete level_set;
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}
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void OpenVDBLevelSet_mesh_to_level_set(struct OpenVDBLevelSet *level_set,
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const float *vertices,
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const unsigned int *faces,
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const unsigned int totvertices,
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const unsigned int totfaces,
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OpenVDBTransform *xform)
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{
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level_set->mesh_to_level_set(vertices, faces, totvertices, totfaces, xform->get_transform());
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}
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void OpenVDBLevelSet_mesh_to_level_set_transform(struct OpenVDBLevelSet *level_set,
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const float *vertices,
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const unsigned int *faces,
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const unsigned int totvertices,
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const unsigned int totfaces,
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OpenVDBTransform *transform)
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{
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level_set->mesh_to_level_set(vertices, faces, totvertices, totfaces, transform->get_transform());
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}
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void OpenVDBLevelSet_volume_to_mesh(struct OpenVDBLevelSet *level_set,
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struct OpenVDBVolumeToMeshData *mesh,
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const double isovalue,
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const double adaptivity,
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const bool relax_disoriented_triangles)
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{
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level_set->volume_to_mesh(mesh, isovalue, adaptivity, relax_disoriented_triangles);
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}
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void OpenVDBLevelSet_filter(struct OpenVDBLevelSet *level_set,
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OpenVDBLevelSet_FilterType filter_type,
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int width,
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float distance,
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OpenVDBLevelSet_FilterBias bias)
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{
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level_set->filter(filter_type, width, distance, bias);
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}
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void OpenVDBLevelSet_CSG_operation(struct OpenVDBLevelSet *out,
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struct OpenVDBLevelSet *gridA,
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struct OpenVDBLevelSet *gridB,
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OpenVDBLevelSet_CSGOperation operation)
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{
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openvdb::FloatGrid::Ptr grid = out->CSG_operation_apply(
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gridA->get_grid(), gridB->get_grid(), operation);
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out->set_grid(grid);
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}
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OpenVDBLevelSet *OpenVDBLevelSet_transform_and_resample(struct OpenVDBLevelSet *level_setA,
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struct OpenVDBLevelSet *level_setB,
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char sampler,
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float isolevel)
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{
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openvdb::FloatGrid::Ptr sourceGrid = level_setA->get_grid();
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openvdb::FloatGrid::Ptr targetGrid = level_setB->get_grid()->deepCopy();
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const openvdb::math::Transform &sourceXform = sourceGrid->transform(),
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&targetXform = targetGrid->transform();
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// Compute a source grid to target grid transform.
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// (For this example, we assume that both grids' transforms are linear,
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// so that they can be represented as 4 x 4 matrices.)
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openvdb::Mat4R xform = sourceXform.baseMap()->getAffineMap()->getMat4() *
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targetXform.baseMap()->getAffineMap()->getMat4().inverse();
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// Create the transformer.
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openvdb::tools::GridTransformer transformer(xform);
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switch (sampler) {
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case OPENVDB_LEVELSET_GRIDSAMPLER_POINT:
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// Resample using nearest-neighbor interpolation.
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transformer.transformGrid<openvdb::tools::PointSampler, openvdb::FloatGrid>(*sourceGrid,
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*targetGrid);
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// Prune the target tree for optimal sparsity.
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targetGrid->tree().prune();
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break;
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case OPENVDB_LEVELSET_GRIDSAMPLER_BOX:
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// Resample using trilinear interpolation.
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transformer.transformGrid<openvdb::tools::BoxSampler, openvdb::FloatGrid>(*sourceGrid,
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*targetGrid);
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// Prune the target tree for optimal sparsity.
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targetGrid->tree().prune();
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break;
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case OPENVDB_LEVELSET_GRIDSAMPLER_QUADRATIC:
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// Resample using triquadratic interpolation.
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transformer.transformGrid<openvdb::tools::QuadraticSampler, openvdb::FloatGrid>(*sourceGrid,
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*targetGrid);
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// Prune the target tree for optimal sparsity.
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targetGrid->tree().prune();
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break;
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case OPENVDB_LEVELSET_GRIDSAMPLER_NONE:
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break;
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}
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targetGrid = openvdb::tools::levelSetRebuild(*targetGrid, isolevel, 1.0f);
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openvdb::tools::pruneLevelSet(targetGrid->tree());
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OpenVDBLevelSet *level_set = OpenVDBLevelSet_create(false, NULL);
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level_set->set_grid(targetGrid);
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return level_set;
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}
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