2252bc6a55
For more detail about `CPPType`, see `BLI_cpp_type.hh` and D14367. Differential Revision: https://developer.blender.org/D14367
91 lines
2.5 KiB
C++
91 lines
2.5 KiB
C++
/* SPDX-License-Identifier: GPL-2.0-or-later */
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#pragma once
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/** \file
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* \ingroup bke
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*/
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#include "FN_generic_virtual_array.hh"
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#include "BLI_math_vec_types.hh"
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#include "BKE_attribute.h"
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struct Mesh;
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namespace blender::bke {
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struct ReadAttributeLookup;
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class OutputAttribute;
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} // namespace blender::bke
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namespace blender::bke::mesh_surface_sample {
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using fn::GMutableSpan;
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using fn::GSpan;
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using fn::GVArray;
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void sample_point_attribute(const Mesh &mesh,
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Span<int> looptri_indices,
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Span<float3> bary_coords,
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const GVArray &data_in,
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const IndexMask mask,
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GMutableSpan data_out);
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void sample_corner_attribute(const Mesh &mesh,
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Span<int> looptri_indices,
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Span<float3> bary_coords,
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const GVArray &data_in,
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const IndexMask mask,
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GMutableSpan data_out);
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void sample_face_attribute(const Mesh &mesh,
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Span<int> looptri_indices,
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const GVArray &data_in,
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const IndexMask mask,
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GMutableSpan data_out);
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enum class eAttributeMapMode {
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INTERPOLATED,
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NEAREST,
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};
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/**
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* A utility class that performs attribute interpolation from a source mesh.
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*
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* The interpolator is only valid as long as the mesh is valid.
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* Barycentric weights are needed when interpolating point or corner domain attributes,
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* these are computed lazily when needed and re-used.
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*/
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class MeshAttributeInterpolator {
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private:
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const Mesh *mesh_;
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const IndexMask mask_;
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const Span<float3> positions_;
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const Span<int> looptri_indices_;
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Array<float3> bary_coords_;
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Array<float3> nearest_weights_;
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public:
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MeshAttributeInterpolator(const Mesh *mesh,
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const IndexMask mask,
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const Span<float3> positions,
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const Span<int> looptri_indices);
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void sample_data(const GVArray &src,
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AttributeDomain domain,
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eAttributeMapMode mode,
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const GMutableSpan dst);
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void sample_attribute(const ReadAttributeLookup &src_attribute,
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OutputAttribute &dst_attribute,
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eAttributeMapMode mode);
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protected:
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Span<float3> ensure_barycentric_coords();
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Span<float3> ensure_nearest_weights();
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};
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} // namespace blender::bke::mesh_surface_sample
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