XMConvertFloatToHalfStream
XMConvertHalfToFloatStream
XMMatrixDecompose
XMPlaneTransformStream
XMVector2TransformCoordStream
XMVector2TransformNormalStream
XMVector2TransformStream
XMVector3ProjectStream
XMVector3TransformCoordStream
XMVector3TransformNormalStream
XMVector3TransformStream
XMVector3UnprojectStream
XMVector4TransformStream
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XMQuaternionRotationMatrix method

Computes a rotation quaternion from a rotation matrix.

Syntax


XMVECTOR XMQuaternionRotationMatrix(
  [in]  XMMATRIX M
);

Parameters

M [in]

Rotation matrix.

Return value

Returns the rotation quaternion.

Remarks

This function only uses the upper 3x3 portion of the XMMATRIX. Note if the input matrix contains scales, shears, or other non-rotation transformations in the upper 3x3 matrix, then the output of this function is ill-defined.

The DirectXMath quaternion functions use an XMVECTOR 4-vector to represent quaternions, where the X, Y, and Z components are the vector part and the W component is the scalar part.

Platform Requirements

Microsoft Visual Studio 2010 or Microsoft Visual Studio 2012 with the Windows SDK for Windows 8. Supported for Win32 desktop apps, Windows Store apps, and Windows Phone 8 apps.

Requirements

Namespace

Use DirectX.

Header

DirectXMath.h

 

 

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