Microsoft DirectX 8.1 (Visual Basic)

D3DXQuaternionConjugate

Returns the conjugate of a quaternion.

D3DXQuaternionConjugate( _ 
    QOut As D3DQUATERNION, _ 
    Q As D3DQUATERNION)

Parameters

QOut
D3DQUATERNION type that is the result of the operation, the conjugate of the quaternion.
Q
The source D3DQUATERNION type.

Error Codes

If the function fails, an error is raised and Err.Number can be set to one of the following values.

D3DERR_INVALIDCALL
D3DERR_OUTOFVIDEOMEMORY

For information on trapping errors, see the Microsoft® Visual Basic® Error Handling topic.

Remarks

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

See Also

D3DXQuaternionInverse