Differential D12638 Diff 43526 source/blender/blenkernel/BKE_mesh_sample.hh

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source/blender/blenkernel/BKE_mesh_sample.hh

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	*			*
	* The interpolator is only valid as long as the mesh is valid.			* The interpolator is only valid as long as the mesh is valid.
	* Barycentric weights are needed when interpolating point or corner domain attributes,			* Barycentric weights are needed when interpolating point or corner domain attributes,
	* these are computed lazily when needed and re-used.			* these are computed lazily when needed and re-used.
	*/			*/
	class MeshAttributeInterpolator {			class MeshAttributeInterpolator {
	private:			private:
	const Mesh *mesh_;			const Mesh *mesh_;
				const IndexMask mask_;
	const Span<float3> positions_;			const Span<float3> positions_;
	const Span<int> looptri_indices_;			const Span<int> looptri_indices_;

	Array<float3> bary_coords_;			Array<float3> bary_coords_;
	Array<float3> nearest_weights_;			Array<float3> nearest_weights_;

	public:			public:
	MeshAttributeInterpolator(const Mesh *mesh,			MeshAttributeInterpolator(const Mesh *mesh,
				const IndexMask mask,
	const Span<float3> positions,			const Span<float3> positions,
	const Span<int> looptri_indices);			const Span<int> looptri_indices);

	void sample_data(const GVArray &src,			void sample_data(const GVArray &src,
	const AttributeDomain domain,			const AttributeDomain domain,
	const eAttributeMapMode mode,			const eAttributeMapMode mode,
	const IndexMask mask,
	const GMutableSpan dst);			const GMutableSpan dst);

	void sample_attribute(const ReadAttributeLookup &src_attribute,			void sample_attribute(const ReadAttributeLookup &src_attribute,
	OutputAttribute &dst_attribute,			OutputAttribute &dst_attribute,
	eAttributeMapMode mode);			eAttributeMapMode mode);

	protected:			protected:
	Span<float3> ensure_barycentric_coords();			Span<float3> ensure_barycentric_coords();
	Span<float3> ensure_nearest_weights();			Span<float3> ensure_nearest_weights();
	};			};

	} // namespace blender::bke::mesh_surface_sample			} // namespace blender::bke::mesh_surface_sample