D3DXQuaternionRotationMatrix function (D3dx9math.h)

Note

The D3DX utility library is deprecated. We recommend that you use DirectXMath instead.

Builds a quaternion from a rotation matrix.

Syntax

D3DXQUATERNION* D3DXQuaternionRotationMatrix(
  _Inout_       D3DXQUATERNION *pOut,
  _In_    const D3DXMATRIX     *pM
);

Parameters

pOut [in, out]

Type: D3DXQUATERNION*

Pointer to the D3DXQUATERNION structure that is the result of the operation.

pM [in]

Type: const D3DXMATRIX*

Pointer to the source D3DXMATRIX structure.

Return value

Type: D3DXQUATERNION*

Pointer to the D3DXQUATERNION structure built from a rotation matrix.

Remarks

The return value for this function is the same value returned in the pOut parameter. In this way, the D3DXQuaternionRotationMatrix function can be used as a parameter for another function.

Use D3DXQuaternionNormalize for any quaternion input that is not already normalized.

Requirements

Requirement Value
Header
D3dx9math.h
Library
D3dx9.lib

See also

Math Functions

D3DXQuaternionRotationAxis

D3DXQuaternionRotationYawPitchRoll