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Cleanup: Add a function to sample mesh point normals 

This simplifies #108014 and is consistent with the existing function
for face corners, `sample_corner_normals`.
This commit is contained in:
Hans Goudey 2023-05-17 16:54:22 -04:00
parent f106579a9a
commit 468295cb7c
2 changed files with 26 additions and 0 deletions
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8
source/blender/blenkernel/BKE_mesh_sample.hh
View File

@ -35,6 +35,14 @@ void sample_point_attribute(Span<int> corner_verts,
IndexMask mask,
GMutableSpan dst);
void sample_point_normals(Span<int> corner_verts,
Span<MLoopTri> looptris,
Span<int> looptri_indices,
Span<float3> bary_coords,
Span<float3> src,
IndexMask mask,
MutableSpan<float3> dst);
void sample_corner_attribute(Span<MLoopTri> looptris,
Span<int> looptri_indices,
Span<float3> bary_coords,

18
source/blender/blenkernel/intern/mesh_sample.cc
View File

@ -32,6 +32,24 @@ BLI_NOINLINE static void sample_point_attribute(const Span<int> corner_verts,
}
}
void sample_point_normals(const Span<int> corner_verts,
const Span<MLoopTri> looptris,
const Span<int> looptri_indices,
const Span<float3> bary_coords,
const Span<float3> src,
const IndexMask mask,
const MutableSpan<float3> dst)
{
for (const int i : mask) {
const MLoopTri &tri = looptris[looptri_indices[i]];
const float3 value = attribute_math::mix3(bary_coords[i],
src[corner_verts[tri.tri[0]]],
src[corner_verts[tri.tri[1]]],
src[corner_verts[tri.tri[2]]]);
dst[i] = math::normalize(value);
}
}
void sample_point_attribute(const Span<int> corner_verts,
const Span<MLoopTri> looptris,
const Span<int> looptri_indices,