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IMeshUtilities::CalculateTangents

Calculates Tangents and Normals for a given set of vertex data

Windows

MacOS

Linux

References

Module	MeshUtilities
Header	/Engine/Source/Developer/MeshUtilities/Public/MeshUtilities.h
Include	#include "MeshUtilities.h"

Syntax

void CalculateTangents
(
    const TArray< FVector > & InVertices,
    const TArray< uint32 > & InIndices,
    const TArray< FVector2D > & InUVs,
    const TArray< uint32 > & InSmoothingGroupIndices,
    const uint32 InTangentOptions,
    TArray< FVector > & OutTangentX,
    TArray< FVector > & OutTangentY,
    TArray< FVector > & OutNormals
) const

Remarks

Calculates Tangents and Normals for a given set of vertex data

Parameters

Parameter	Description
InVertices	Vertices that make up the mesh
InIndices	Indices for the Vertex array
InUVs	Texture coordinates (per-index based)
InSmoothingGroupIndices	Smoothing group index (per-face based)
InTangentOptions	Flags for Tangent calculation
OutTangentX	Array to hold calculated Tangents
OutTangentY	Array to hold calculated Bitangents
OutNormals	Array to hold calculated normals (if already contains normals will use those instead for the tangent calculation)

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