855113ab06
The RNA `Mesh.calc_tangents()` function used a mesh tangents API wrapper function that existed at a different abstraction level than the other functions. That wrapper was only used in this single place, so just inline its logic into the RNA code. Also give the base tangents API function a name that makes its limitations clear.
60 lines
2.2 KiB
C++
60 lines
2.2 KiB
C++
/* SPDX-FileCopyrightText: 2023 Blender Authors
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*
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* 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 "BLI_array.hh"
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#include "BLI_math_vector_types.hh"
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#include "BLI_offset_indices.hh"
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struct ReportList;
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struct Mesh;
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namespace blender::bke::mesh {
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/**
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* Compute simplified tangent space normals, i.e.
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* tangent vector + sign of bi-tangent one, which combined with
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* custom normals can be used to recreate the full tangent space.
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*
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* \note The mesh should be made of only triangles and quads!
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*/
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void calc_uv_tangent_tris_quads(Span<float3> vert_positions,
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OffsetIndices<int> faces,
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Span<int> corner_verts,
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Span<float3> corner_normals,
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Span<float2> uv_map,
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MutableSpan<float4> results,
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ReportList *reports);
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/**
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* See: #BKE_editmesh_uv_tangents_calc (matching logic).
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*/
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Array<Array<float4>> calc_uv_tangents(Span<float3> vert_positions,
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OffsetIndices<int> faces,
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Span<int> corner_verts,
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Span<int3> corner_tris,
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Span<int> corner_tri_faces,
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Span<bool> sharp_faces,
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Span<float3> vert_normals,
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Span<float3> face_normals,
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Span<float3> corner_normals,
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Span<Span<float2>> uv_maps);
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Array<float4> calc_orco_tangents(Span<float3> vert_positions,
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OffsetIndices<int> faces,
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Span<int> corner_verts,
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Span<int3> corner_tris,
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Span<int> corner_tri_faces,
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Span<bool> sharp_faces,
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Span<float3> vert_normals,
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Span<float3> face_normals,
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Span<float3> corner_normals,
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Span<float3> vert_orco);
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} // namespace blender::bke::mesh
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