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Unreal Engine C++ API Reference > Developer > MeshUtilities > IMeshUtilities
References
Module | MeshUtilities |
Header | /Engine/Source/Developer/MeshUtilities/Public/MeshUtilities.h |
Include | #include "MeshUtilities.h" |
void CalculateTriangleTangent ( const [FSoftSkinVertex](API\Runtime\Engine\Rendering\FSoftSkinVertex) & VertexA, const [FSoftSkinVertex](API\Runtime\Engine\Rendering\FSoftSkinVertex) & VertexB, const [FSoftSkinVertex](API\Runtime\Engine\Rendering\FSoftSkinVertex) & VertexC, [TArray](API\Runtime\Core\Containers\TArray)< FVector3f > & OutTangents, float CompareThreshold )
Remarks
Calculate The tangent, bi normal and normal for the triangle define by the tree SoftSkinVertex.
The function will always fill properly the OutTangents array with 3 FVector. If the triangle is degenerated the OutTangent will contain zeroed vectors.
Parameters
Name | Description |
---|---|
VertexA | First triangle vertex. |
VertexB | Second triangle vertex. |
VertexC | Third triangle vertex. |
OutTangents | The function allocate the TArray with 3 FVector, to represent the triangle tangent, bi normal and normal. |
CompareThreshold | The threshold use to compare a tangent vector with zero. |