![]() |
![]() |
![]() |
Transforms an array (x, y, z, 0) by a given matrix.
Syntax
D3DXVECTOR3 *WINAPI 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. To transpose a normal with a non-affine matrix, this matrix should be a transposed-inverse transformation matrix.
- n
- [in] Number of elements in the array.
Return Value
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 transform a normal by a non-affine matrix, the matrix you pass to this function should be the transpose of the inverse of the matrix you would use to transform a coordinate.
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.
Function Information
Header d3dx9math.h Import library d3dx9.lib Minimum operating systems Windows 98