XMVector2TransformCoordStream function (directxmath.h)

Transforms a stream of 2D vectors by a given matrix, projecting the resulting vectors such that their w coordinates are equal to 1.0.

Syntax

XMFLOAT2 *XM_CALLCONV XMVector2TransformCoordStream(
  [out] XMFLOAT2       *pOutputStream,
  [in]  size_t         OutputStride,
  [in]  const XMFLOAT2 *pInputStream,
  [in]  size_t         InputStride,
  [in]  size_t         VectorCount,
  [in]  FXMMATRIX      M
) noexcept;

Parameters

[out] pOutputStream

Address of the first XMFLOAT2 in the destination stream.

[in] OutputStride

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

[in] pInputStream

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

[in] InputStride

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

[in] VectorCount

Number of vectors to transform.

[in] M

Transformation matrix.

Return value

Returns the address of the first XMFLOAT2 in the destination stream.

Remarks

XMVector2TransformCoordStream performs transformations by using the input matrix row 0 and row 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 1.0. The z component of the returned vector should be ignored and its w component will have a value of 1.0.

Platform Requirements

Requirements

See also

DirectXMath Library 2D Vector Transformation Functions

XMVector2TransformCoord