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Add voxel scale to openvdb metadata.

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To be able to retrieve that information from a generated grid alone.

To avoid the copying of input mesh (for scaling) when doing the hollowing

Also remove some unused stuff from OpenVDBUtils
This commit is contained in:
tamasmeszaros 2020-12-17 13:38:09 +01:00
parent 7cb3e729ee
commit e57eca0289
3 changed files with 70 additions and 90 deletions
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14
src/libslic3r/OpenVDBUtils.hpp
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@ -21,14 +21,16 @@ inline Vec3d to_vec3d(const openvdb::Vec3s &v) { return to_vec3f(v).cast<double>
inline Vec3i to_vec3i(const openvdb::Vec3I &v) { return Vec3i{int(v[0]), int(v[1]), int(v[2])}; }
inline Vec4i to_vec4i(const openvdb::Vec4I &v) { return Vec4i{int(v[0]), int(v[1]), int(v[2]), int(v[3])}; }
// Here voxel_scale defines the scaling of voxels which affects the voxel count.
// 1.0 value means a voxel for every unit cube. 2 means the model is scaled to
// be 2x larger and the voxel count is increased by the increment in the scaled
// volume, thus 4 times. This kind a sampling accuracy selection is not
// achievable through the Transform parameter. (TODO: or is it?)
// The resulting grid will contain the voxel_scale in its metadata under the
// "voxel_scale" key to be used in grid_to_mesh function.
openvdb::FloatGrid::Ptr mesh_to_grid(const TriangleMesh & mesh,
const openvdb::math::Transform &tr = {},
float exteriorBandWidth = 3.0f,
float interiorBandWidth = 3.0f,
int flags = 0);
openvdb::FloatGrid::Ptr mesh_to_grid(const sla::Contour3D & mesh,
const openvdb::math::Transform &tr = {},
float voxel_scale = 1.f,
float exteriorBandWidth = 3.0f,
float interiorBandWidth = 3.0f,
int flags = 0);