Hans Goudey
8ddfdfd2b2
In future use cases, a volume can contain many grids that represent the density information. In this case, it's better if the volume to mesh node creates a mesh based on all of the grids in the volume. This is also a benefit to share-ability, since one doesn't have to specify the grid name in the node. Instead, in the future we can have a way to split particular grids into separate volumes, if only one grid should be considered. The code changes are relatively simple: - Move the old volume to mesh node to the legacy folder. - Run the volume to mesh node on all instance geometry, like elsewhere. - Make the blenkernel's volume to mesh API a bit more specific. Differential Revision: https://developer.blender.org/D12997
75 lines
2.4 KiB
C++
75 lines
2.4 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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#include "BLI_span.hh"
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#include "DNA_modifier_types.h"
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#ifdef WITH_OPENVDB
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# include <openvdb/openvdb.h>
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#endif
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struct Mesh;
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namespace blender::bke {
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struct VolumeToMeshResolution {
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VolumeToMeshResolutionMode mode;
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union {
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float voxel_size;
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float voxel_amount;
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} settings;
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};
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#ifdef WITH_OPENVDB
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/**
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* The result of converting a volume grid to mesh data, in the format used by the OpenVDB API.
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*/
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struct OpenVDBMeshData {
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std::vector<openvdb::Vec3s> verts;
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std::vector<openvdb::Vec3I> tris;
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std::vector<openvdb::Vec4I> quads;
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bool is_empty() const
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{
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return verts.empty();
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}
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};
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struct Mesh *volume_to_mesh(const openvdb::GridBase &grid,
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const VolumeToMeshResolution &resolution,
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const float threshold,
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const float adaptivity);
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struct OpenVDBMeshData volume_to_mesh_data(const openvdb::GridBase &grid,
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const VolumeToMeshResolution &resolution,
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const float threshold,
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const float adaptivity);
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void fill_mesh_from_openvdb_data(const Span<openvdb::Vec3s> vdb_verts,
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const Span<openvdb::Vec3I> vdb_tris,
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const Span<openvdb::Vec4I> vdb_quads,
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const int vert_offset,
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const int poly_offset,
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const int loop_offset,
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MutableSpan<MVert> verts,
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MutableSpan<MPoly> polys,
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MutableSpan<MLoop> loops);
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#endif
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} // namespace blender::bke
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