D3DXQuaternionToAxisAngle function
Computes a quaternion's axis and angle of rotation.
Syntax
void D3DXQuaternionToAxisAngle( _In_ const D3DXQUATERNION *pQ, _Inout_ D3DXVECTOR3 *pAxis, _Inout_ FLOAT *pAngle );
Parameters
- pQ [in]
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Type: const D3DXQUATERNION*
Pointer to the source D3DXQUATERNION structure.
- pAxis [in, out]
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Type: D3DXVECTOR3*
This function returns a pointer to a D3DXVECTOR3 structure that identifies the quaternion's axis of rotation.
- pAngle [in, out]
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Type: FLOAT*
This function returns a pointer to a FLOAT value that identifies the quaternion's angle of rotation in radians.
Return value
No return value.
Remarks
Use D3DXQuaternionNormalize for any quaternion input that is not already normalized.
Requirements
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Build date: 11/22/2012
