D3DXQuaternionIsIdentity

The D3DXQuaternionIsIdentity function determines if the given quaternion is an identity quaternion.

BOOL D3DXQuaternionIsIdentity(
  const D3DXQUATERNION* pQ
); 

Parameters

pQ

A pointer to the D3DXQUATERNION structure that will be tested for identity.

Return Values

If the given quaternion is an identity quaternion, this function returns TRUE; otherwise, this function returns FALSE.

Requirements

  Windows NT/2000: Requires Windows 2000.
  Windows 95/98: Requires Windows 95 or later. Available as a redistributable for Windows 95.
  Windows CE: Unsupported.
  Version: Requires DirectX 7.0.
  Header: Declared in d3dxmath.h.
  Library: Use d3dx.lib.

See Also

D3DXQuaternionIdentity