D3DXQuaternionConjugate function

Note

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

Returns the conjugate of a quaternion.

Syntax

D3DXQUATERNION* D3DXQuaternionConjugate(
  _Inout_       D3DXQUATERNION *pOut,
  _In_    const D3DXQUATERNION *pQ
);

Parameters

pOut [in, out]

Type: D3DXQUATERNION*

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

pQ [in]

Type: const D3DXQUATERNION*

Pointer to the source D3DXQUATERNION structure.

Return value

Type: D3DXQUATERNION*

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

Requirement	Value
Header	D3dx9math.h
Library	D3dx9.lib

See also

Math Functions

D3DXQuaternionInverse