BKE_volume_to_mesh.hh

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/* SPDX-FileCopyrightText: 2023 Blender Authors
 *
 * SPDX-License-Identifier: GPL-2.0-or-later */
 
#pragma once
 
#include "BLI_span.hh"
 
#include "DNA_modifier_types.h"
 
#ifdef WITH_OPENVDB
#  include <openvdb/openvdb.h>
#endif
 
struct Mesh;
 
namespace blender::bke {
 
struct VolumeToMeshResolution {
  VolumeToMeshResolutionMode mode;
  union {
    float voxel_size;
    float voxel_amount;
  } settings;
};
 
#ifdef WITH_OPENVDB
 
struct OpenVDBMeshData {
  std::vector<openvdb::Vec3s> verts;
  std::vector<openvdb::Vec3I> tris;
  std::vector<openvdb::Vec4I> quads;
  bool is_empty() const
  {
    return verts.empty();
  }
};
 
Mesh *volume_to_mesh(const openvdb::GridBase &grid,
                     const VolumeToMeshResolution &resolution,
                     float threshold,
                     float adaptivity);
 
Mesh *volume_grid_to_mesh(const openvdb::GridBase &grid, float threshold, float adaptivity);
 
struct VolumeToMeshDataResult {
  OpenVDBMeshData data;
  std::string error;
};
 
VolumeToMeshDataResult volume_to_mesh_data(const openvdb::GridBase &grid,
                                           const VolumeToMeshResolution &resolution,
                                           float threshold,
                                           float adaptivity);
 
void fill_mesh_from_openvdb_data(Span<openvdb::Vec3s> vdb_verts,
                                 Span<openvdb::Vec3I> vdb_tris,
                                 Span<openvdb::Vec4I> vdb_quads,
                                 int vert_offset,
                                 int face_offset,
                                 int loop_offset,
                                 MutableSpan<float3> vert_positions,
                                 MutableSpan<int> face_offsets,
                                 MutableSpan<int> corner_verts);
 
#endif
 
}  // namespace blender::bke