D3DXVec3TransformNormalArray
Microsoft DirectX 9.0 SDK Update (October 2004)

D3DXVec3TransformNormalArray Function


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

Headerd3dx9math.h
Import libraryd3dx9.lib
Minimum operating systems Windows 98


© 2004 Microsoft Corporation. All rights reserved.
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