D3DXQuaternionRotationMatrix

Builds a quaternion from a rotation matrix.

D3DXQUATERNION * D3DXQuaternionRotationMatrix(
  D3DXQUATERNION * pOut,
  CONST D3DXMATRIX * pM
);

Parameters

pOut

[in, out] Pointer to the D3DXQUATERNION structure that is the result of the operation.

pM

[in] Pointer to the source D3DXMATRIX structure.

Return Values

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

Header: Declared in D3dx9math.h.

See Also

D3DXQuaternionRotationAxis, D3DXQuaternionRotationYawPitchRoll