D3DXVec3TransformNormalArray function (D3dx9math.h)

Note

The D3DX utility library is deprecated. We recommend that you use DirectXMath instead.

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

Syntax

D3DXVECTOR3* D3DXVec3TransformNormalArray(
  _Inout_       D3DXVECTOR3 *pOut,
  _In_          UINT        OutStride,
  _In_    const D3DXVECTOR3 *pV,
  _In_          UINT        VStride,
  _In_    const D3DXMATRIX  *pM,
  _In_          UINT        n
);

Parameters

pOut [in, out]

Type: D3DXVECTOR3*

Pointer to the D3DXVECTOR3 array that is the result of the operation.

OutStride [in]

Type: UINT

Stride between vectors in the output data stream.

pV [in]

Type: const D3DXVECTOR3*

Pointer to the source D3DXVECTOR3 array.

VStride [in]

Type: UINT

Stride between vectors in the input data stream.

pM [in]

Type: const D3DXMATRIX*

Pointer to the source D3DXMATRIX structure.

n [in]

Type: UINT

Number of elements in the array.

Return value

Type: D3DXVECTOR3*

Pointer to a D3DXVECTOR3 array that is the transformed array.

Remarks

This function transforms the vector (pV->x, pV->y, pV->z, 0) by the matrix pointed to by 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

Requirement Value
Header
D3dx9math.h
Library
D3dx9.lib

See also

Math Functions