mirror of
https://github.com/id-Software/Wolf3D-iOS.git
synced 2026-03-19 16:39:49 +01:00
54 lines
1.7 KiB
C
54 lines
1.7 KiB
C
/*
|
|
|
|
Copyright (C) 2005 Michael Liebscher <johnnycanuck@users.sourceforge.net>
|
|
Copyright (C) 1997-2001 Id Software, Inc.
|
|
|
|
This program is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU General Public License
|
|
as published by the Free Software Foundation; either version 2
|
|
of the License, or (at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program; if not, write to the Free Software
|
|
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
|
|
|
|
*/
|
|
|
|
/*
|
|
* angle.h: Angle math routines.
|
|
*
|
|
* Author: Michael Liebscher <johnnycanuck@users.sourceforge.net>
|
|
*
|
|
* Acknowledgement:
|
|
* Portion of this code was derived from Quake II, and was originally
|
|
* written by Id Software, Inc.
|
|
*
|
|
*/
|
|
|
|
#ifndef __ANGLE_H__
|
|
#define __ANGLE_H__
|
|
|
|
|
|
#define DEG2RAD( a ) ( (a) * 0.01745329251994329576f ) // a * M_PI / 180.0f
|
|
#define RAD2DEG( a ) ( (int)((a) / 0.01745329251994329576f) ) // a * 180.0f / M_PI
|
|
|
|
#define ANGLE2SHORT( x ) ( (int)((x) * 65536 / 360) & 65535 )
|
|
#define SHORT2ANGLE( x ) ( (x) * (360.0 / 65536) )
|
|
|
|
|
|
|
|
extern float angle_diff( float angle1, float angle2 );
|
|
extern float angle_wise( float angle1, float angle2 );
|
|
extern float interpolate_angle( float from, float to, float fraction );
|
|
extern float normalize_angle( float angle );
|
|
extern float LerpAngle( float from, float to, float frac );
|
|
|
|
|
|
|
|
#endif /* __ANGLE_H__ */
|