4 * An object oriented GL/GLES Abstraction/Utility Layer
6 * Copyright (C) 2008,2009 Intel Corporation.
8 * This library is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2 of the License, or (at your option) any later version.
13 * This library is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with this library; if not, write to the
20 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
21 * Boston, MA 02111-1307, USA.
24 * Robert Bragg <robert@linux.intel.com>
27 #ifndef __COGL_QUATERNION_PRIVATE_H__
28 #define __COGL_QUATERNION_PRIVATE_H__
33 #define _COGL_QUATERNION_NORM(Q) \
34 ((Q)->x*(Q)->x + (Q)->y*(Q)->y + (Q)->z*(Q)->z + (Q)->w*(Q)->w)
36 #define _COGL_QUATERNION_DEGREES_TO_RADIANS (G_PI / 180.0f)
37 #define _COGL_QUATERNION_RADIANS_TO_DEGREES (180.0f / G_PI)
39 #endif /* __COGL_QUATERNION_PRIVATE_H__ */