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> Unreal Engine API Reference > Runtime > GeometryCore > DynamicMesh > TMeshTangents

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TMeshTangents

[TMeshTangents](API\Runtime\GeometryCore\DynamicMesh\TMeshTangents) is a utility class that can calculate and store various types of tangent vectors for a FDynamicMesh.

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References

Module	GeometryCore
Header	/Engine/Source/Runtime/GeometryCore/Public/DynamicMesh/MeshTangents.h
Include	#include "DynamicMesh/MeshTangents.h"

Syntax

template<typename RealType>
class TMeshTangents

Remarks

TMeshTangents is a utility class that can calculate and store various types of tangent vectors for a FDynamicMesh.

Variables

	Name	Description
TArray< int32 >	AllDegenerateTris	Indices of degenerate triangles.
TArray< TVector...	Bitangents	Set of computed bitangents
const FDynamicM...	Mesh	Target Mesh
TArray< TVector...	Tangents	Set of computed tangents

Constructors

	Name	Description
	TMeshTangents()
	TMeshTangents ( const FDynamicMesh3* Mesh )

Functions

	Name	Description
void	ComputeMikkTStyleTangents ( const FDynamicMeshNormalOverlay..., const FDynamicMeshUVOverlay* U..., const FComputeTangentsOptions& Opt... )	Calculate MikkT-space-style tangents.
void	ComputeSeparatePerTriangleTangents ( const FDynamicMeshNormalOverlay..., const FDynamicMeshUVOverlay* U..., const FComputeTangentsOptions& Opt... )	Calculate per-triangle tangents and then projected to overlay normals at each triangle-vertex
void	ComputeTriangleTangents ( const FDynamicMeshUVOverlay* U..., bool bOrthogonalize )	Compute per-triangle tangents for the given UV Overlay
void	ComputeTriVertexTangents ( const FDynamicMeshNormalOverlay..., const FDynamicMeshUVOverlay* U..., const FComputeTangentsOptions& Opt... )	Calculate per-triangle tangent spaces based on the given per-triangle normal and UV overlays.
bool	CopyToOverlays ( FDynamicMesh3& MeshToSet )	Set Tangents on mesh overlays
bool	CopyTriVertexTangents ( const FDynamicMesh3& SourceMesh )	Initialize Tangents from the FDynamicMeshAttributeSet of SourceMesh
void	CopyTriVertexTangents ( const TMeshTangents< OtherRealType ... )	Initialize Tangents from other Tangents set
const TArray...	GetBitangents()
const TArray...	GetDegenerateTris()
void	GetInterpolatedTriangleTangent ( int32 TriangleID, const UE::Math::TVector< RealType >..., UE::Math::TVector< RealType >& Tan..., UE::Math::TVector< RealType >& Bit... )
void	GetPerTriangleTangent ( int32 TriangleID, int32 TriVertIdx, VectorType& TangentOut, VectorType& BitangentOut )	Return tangent and bitangent at a vertex of triangle for per-triangle computed tangents
void	GetPerTriangleTangent ( int32 TriangleID, int32 TriVertIdx, UE::Math::TVector< RealType >& Tan..., UE::Math::TVector< RealType >& Bit... )	Return tangent and bitangent at a vertex of triangle for per-triangle computed tangents
const TArray...	GetTangents()
void	GetTriangleVertexTangentVectors ( int32 TriangleID, int32 TriVertexIndex, OtherVectorType& TangentOut, OtherVectorType& BitangentOut )	Get tangent and bitangent at a vertex of a triangle for per-triangle computed tangents
void	InitializeTriangleTangents ( bool bClearToZero )	Per-Triangle Tangents Number of Tangents is NumTrianglesInitialize buffer sizes to one tangent/bitangent per mesh triangle
void	InitializeTriVertexTangents ( bool bClearToZero )	Per-Triangle-Vertex Tangents Number of Tangents is NumTriangles * 3 Set internal buffer sizes suitable for calculating per-triangle tangents.
void	SetMesh ( const FDynamicMesh3* MeshIn )
void	SetPerTriangleTangent ( int TriangleID, int TriVertIdx, const TVector< RealType >& Tangent, const TVector< RealType >& Bitange... )	Set tangent and bitangent at a vertex of triangle for per-triangle computed tangents.
void	SetTangentCount ( int Count, bool bClearToZero )	Set the size of the Tangents array to Count, and optionally clear all values to (0,0,0)