XMVector2TransformNormalStream function (directxmath.h)

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

Syntax

XMFLOAT2 *XM_CALLCONV XMVector2TransformNormalStream(
  [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

Each vector in the input stream must be normalized.

XMVector2TransformNormalStream uses row 0 and 1 of the input transformation matrix for rotation and scaling. Rows 2 and 3 are ignored.

Platform Requirements

Requirements

See also

DirectXMath Library 2D Vector Transformation Functions

XMVector2TransformNormal