RenderMath.h File Reference

#include "CoreMinimal.h"
#include "PackedNormal.h"

Go to the source code of this file.

Functions
float	GetBasisDeterminantSign (const FVector &XAxis, const FVector &YAxis, const FVector &ZAxis)
int8	GetBasisDeterminantSignByte (const FPackedNormal &XAxis, const FPackedNormal &YAxis, const FPackedNormal &ZAxis)
template<typename VectorType >
FVector	GenerateYAxis (const VectorType &XAxis, const VectorType &ZAxis)

Function Documentation

GenerateYAxis()

template<typename VectorType >

FVector GenerateYAxis ( const VectorType &  XAxis, const VectorType &  ZAxis  )

inline

Given 2 axes of a basis stored as a packed type, regenerates the y-axis tangent vector and scales by z.W

Parameters

XAxis	- x axis (tangent)
ZAxis	- z axis (normal), the sign of the determinant is stored in ZAxis.W

Returns

y axis (binormal)

GetBasisDeterminantSign()

float GetBasisDeterminantSign ( const FVector &  XAxis, const FVector &  YAxis, const FVector &  ZAxis  )

inline

Constructs a basis matrix for the axis vectors and returns the sign of the determinant

Parameters

XAxis	- x axis (tangent)
YAxis	- y axis (binormal)
ZAxis	- z axis (normal)

Returns

sign of determinant either -1 or +1

GetBasisDeterminantSignByte()

int8 GetBasisDeterminantSignByte ( const FPackedNormal &  XAxis, const FPackedNormal &  YAxis, const FPackedNormal &  ZAxis  )

inline

Constructs a basis matrix for the axis vectors and returns the sign of the determinant

Parameters

XAxis	- x axis (tangent)
YAxis	- y axis (binormal)
ZAxis	- z axis (normal)

Returns

sign of determinant either -127 (-1) or +1 (127)