D3DXVec3TransformNormalArray

Transforms an array (x, y, z, 0) by a given matrix.

D3DXVECTOR3 * D3DXVec3TransformNormalArray(
  D3DXVECTOR3* pOut,
  UINT OutStride,
  CONST D3DXVECTOR3* pV,
  UINT VStride,
  CONST D3DXMATRIX* pM,
  UINT n
);

Parameters

pOut

[in, out] Pointer to the D3DXVECTOR3 array that is the result of the operation.

OutStride

[in] Stride between vectors in the output data stream.

pV

[in] Pointer to the source D3DXVECTOR3 array.

VStride

[in] Stride between vectors in the input data stream.

pM

[in] Pointer to the source D3DXMATRIX structure.

n

[in] Number of elements in the array.

Return Values

Pointer to a D3DXVECTOR3 array that is the transformed array.

Remarks

This function transforms the vector normal pV (x, y, z, 0) by the matrix pM.

If you want to transform a normal, the matrix you pass to this function should be the transpose of the inverse of the matrix you would use to transform a point.

The return value for this function is the same value returned in the pOut parameter. In this way, the D3DXVec3TransformNormalArray function can be used as a parameter for another function.

Requirements

Header: Declared in D3dx9math.h.