#include <MeshTangents.h>

Public Member Functions
GEOMETRYCORE_API	FDynamicMeshTangents (const FDynamicMesh3 *MeshIn)

GEOMETRYCORE_API bool	HasValidTangents (bool bCheckValues=false) const

GEOMETRYCORE_API void	GetTangentFrame (int32 TriangleID, int32 TriVertexIndex, FVector3f &NormalOut, FVector3f &TangentOut, FVector3f &BitangentOut) const

GEOMETRYCORE_API void	GetTangentVectors (int32 TriangleID, int32 TriVertexIndex, const FVector3f &Normal, FVector3f &TangentOut, FVector3f &BitangentOut) const

GEOMETRYCORE_API void	GetTangentVectors (int32 TriangleID, int32 TriVertexIndex, FVector3f &TangentOut, FVector3f &BitangentOut) const

Public Attributes
const FDynamicMesh3 *	Mesh = nullptr

const FDynamicMeshNormalOverlay *	Normals = nullptr

const FDynamicMeshNormalOverlay *	Tangents = nullptr

const FDynamicMeshNormalOverlay *	Bitangents = nullptr

Detailed Description

FDynamicMeshTangents is a helper object for accessing tangents stored in the AttributeSet of a FDynamicMesh3.

Constructor & Destructor Documentation

◆ FDynamicMeshTangents()

FDynamicMeshTangents::FDynamicMeshTangents ( const FDynamicMesh3 * MeshIn )

Member Function Documentation

◆ GetTangentFrame()

void FDynamicMeshTangents::GetTangentFrame	(	int32	TriangleID,
		int32	TriVertexIndex,
		FVector3f &	NormalOut,
		FVector3f &	TangentOut,
		FVector3f &	BitangentOut
	)		const

If tangents are available in the overlays, returns them. If only Normal is available, computes orthogonal basis. Falls back to unit axes if no overlays are available.

◆ GetTangentVectors() [1/2]

void FDynamicMeshTangents::GetTangentVectors	(	int32	TriangleID,
		int32	TriVertexIndex,
		const FVector3f &	Normal,
		FVector3f &	TangentOut,
		FVector3f &	BitangentOut
	)		const

If tangents are available in the overlays, returns them. Otherwise computes orthogonal basis to Normal argument.

◆ GetTangentVectors() [2/2]

void FDynamicMeshTangents::GetTangentVectors	(	int32	TriangleID,
		int32	TriVertexIndex,
		FVector3f &	TangentOut,
		FVector3f &	BitangentOut
	)		const

If tangents are available in the overlays, returns them, otherwise falls back to unit X/Y axes.

◆ HasValidTangents()

bool FDynamicMeshTangents::HasValidTangents ( bool bCheckValues = false ) const

Checks the mesh for valid tangents. When bCheckValues == true, inspects the tangents for invalid values (ex. zero, NaN).

Parameters

bCheckValues inspect tangent values for zero/NaN

Returns: true if the mesh has valid tangents

Member Data Documentation

◆ Bitangents

const FDynamicMeshNormalOverlay* UE::Geometry::FDynamicMeshTangents::Bitangents = nullptr

◆ Mesh

const FDynamicMesh3* UE::Geometry::FDynamicMeshTangents::Mesh = nullptr

◆ Normals

const FDynamicMeshNormalOverlay* UE::Geometry::FDynamicMeshTangents::Normals = nullptr

◆ Tangents

const FDynamicMeshNormalOverlay* UE::Geometry::FDynamicMeshTangents::Tangents = nullptr

The documentation for this class was generated from the following files:

Engine/Source/Runtime/GeometryCore/Public/DynamicMesh/MeshTangents.h
Engine/Source/Runtime/GeometryCore/Private/DynamicMesh/MeshTangents.cpp

Public Member Functions

Public Attributes