D3DXQuaternionConjugate

Returns the conjugate of a quaternion.

D3DXQUATERNION * D3DXQuaternionConjugate(
  D3DXQUATERNION * pOut,
  CONST D3DXQUATERNION * pQ
);

Parameters

pOut

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

pQ

[in] Pointer to the source D3DXQUATERNION structure.

Return Values

Pointer to a D3DXQUATERNION structure that is the conjugate of the quaternion.

Remarks

Given a quaternion (x, y, z, w), the D3DXQuaternionConjugate function will return the quaternion (-x, -y, -z, w).

The return value for this function is the same value returned in the pOut parameter. In this way, the D3DXQuaternionConjugate 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

D3DXQuaternionInverse