# D3DXVec2TransformNormalArray function (D3DX10Math.h)

Note

The D3DX10 utility library is deprecated. We recommend that you use DirectXMath instead.

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

## Syntax

``````D3DXVECTOR2* D3DXVec2TransformNormalArray(
_Inout_       D3DXVECTOR2 *pOut,
_In_          UINT        OutStride,
_In_    const D3DXVECTOR2 *pV,
_In_          UINT        VStride,
_In_    const D3DXMATRIX  *pM,
_In_          UINT        n
);
``````

## Parameters

pOut [in, out]

Type: D3DXVECTOR2*

Pointer to the D3DXVECTOR2 that is the result of the operation.

OutStride [in]

Type: UINT

Stride between vectors in the output data stream.

pV [in]

Type: const D3DXVECTOR2*

Pointer to the source D3DXVECTOR2 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: D3DXVECTOR2*

Pointer to a D3DXVECTOR2 structure that is the transformed array.

## 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 D3DXVec2TransformNormalArray function can be used as a parameter for another function.

## Requirements

Requirement Value