D3DXQuaternionIdentity Function

Returns the identity quaternion.

Syntax

D3DXQUATERNION *D3DXQuaternionIdentity(      

    D3DXQUATERNION *pOut
);

Parameters

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

Return Value

Pointer to the D3DXQUATERNION structure that is the identity quaternion.

Remarks

Given a quaternion (x, y, z, w), the D3DXQuaternionIdentity function will return the quaternion (0, 0, 0, 1).
The return value for this function is the same value returned in the pOut parameter. In this way, the D3DXQuaternionIdentity function can be used as a parameter for another function.

Function Information

Header d3dx9math.h
Import library d3dx9.lib
Minimum operating systems Windows 98

Header	d3dx9math.h
Import library	d3dx9.lib
Minimum operating systems	Windows 98