D3DXVec2TransformNormal function (D3dx9math.h)
Note
The D3DX utility library is deprecated. We recommend that you use DirectXMath instead.
Transforms the 2D vector normal by the given matrix.
Syntax
D3DXVECTOR2* D3DXVec2TransformNormal(
_Inout_ D3DXVECTOR2 *pOut,
_In_ const D3DXVECTOR2 *pV,
_In_ const D3DXMATRIX *pM
);
Parameters
-
pOut [in, out]
-
Type: D3DXVECTOR2*
Pointer to the D3DXVECTOR2 structure that is the result of the operation.
-
pV [in]
-
Type: const D3DXVECTOR2*
Pointer to the source D3DXVECTOR2 structure.
-
pM [in]
-
Type: const D3DXMATRIX*
Pointer to the source D3DXMATRIX structure.
Return value
Type: D3DXVECTOR2*
Pointer to a D3DXVECTOR2 structure that is the transformed vector.
Remarks
This function transforms the vector (pV->x, pV->y, 0, 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 D3DXVec2TransformNormal function can be used as a parameter for another function.
Requirements
| Requirement | Value |
|---|---|
| Header |
|
| Library |
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See also