XMVector2TransformStream

Transforms a stream of 2D vectors by a given matrix.

Syntax

XMFLOAT4* XMVector2TransformStream(
         XMFLOAT4 *pOutputStream,
         size_t OutputStride,
         const XMFLOAT2 *pInputStream,
         size_t InputStride,
         size_t VectorCount,
         CXMMATRIX M
)  

Parameters

pOutputStream
Type: XMFLOAT4 *

[out]

Address of the first XMFLOAT4 in the destination stream.

OutputStride
Type: size_t 

[in]

Stride, in bytes, between vectors in the destination stream.

pInputStream
Type: XMFLOAT2 *

[in]

Address of the first XMFLOAT2 in the stream to be transformed.

InputStride
Type: size_t 

[in]

Stride, in bytes, between vectors in the input stream.

VectorCount
Type: size_t 

[in]

Number of vectors to transform.

M
Type: CXMMATRIX 

[in]

Transformation matrix.

Return value

Type: XMFLOAT4 *

Returns the address of the first XMFLOAT4 in the destination stream.

Remarks

XMVector2TransformStream performs transformations by using the input matrix rows 0 and 1 for rotation and scaling, and row 3 for translation (effectively assuming row 2 is 0). The w component of the input vector is assumed to be 0. The z component of the output vector should be ignored and its w component may be non-homogeneous (!= 1.0).

Requirements

Header: Declared in directxmath.h.