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Added various PI definitions.

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curt 1997-07-19 22:37:03 +00:00
parent 5c8a05b781
commit d64aab6a72
1 changed files with 30 additions and 8 deletions
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38
Simulator/constants.h
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@ -28,19 +28,38 @@
#define CONSTANTS_H
/* Radius of Earth in meters at the equator. Another source had
* 6378165 but this is probably close enough */
#include <math.h>
/* Make sure PI is defined in its various forms */
#ifdef M_PI
# define FG_PI M_PI
#else
# define FG_PI 3.14159265358979323846 /* pi */
#endif
#ifdef M_PI_2
# define FG_PI_2 M_PI_2
#else
# define FG_PI_2 1.57079632679489661923 /* pi/2 */
#endif
#define FG_2PI (FG_PI + FG_PI) /* 2*pi */
/* Radius of Earth in kilometers at the equator. Another source had
* 6378.165 but this is probably close enough */
#define EARTH_RAD 6378.155
/* Degrees to Radians */
#define DEG_TO_RAD 0.017453292
#define DEG_TO_RAD 0.017453292 /* deg*pi/180 = rad */
/* Radians to Degrees */
#define RAD_TO_DEG 57.29577951
#define RAD_TO_DEG 57.29577951 /* rad*180/pi = deg */
/* Arc seconds to radians */
#define ARCSEC_TO_RAD 4.84813681109535993589e-06
/* Arc seconds to radians */ /* (arcsec*pi)/(3600*180) = rad */
#define ARCSEC_TO_RAD 4.84813681109535993589e-06
/* Feet to Meters */
#define FEET_TO_METER 0.3048
@ -57,9 +76,12 @@
/* $Log$
/* Revision 1.3 1997/07/14 16:26:03 curt
/* Testing/playing -- placed objects randomly across the entire terrain.
/* Revision 1.4 1997/07/19 22:37:03 curt
/* Added various PI definitions.
/*
* Revision 1.3 1997/07/14 16:26:03 curt
* Testing/playing -- placed objects randomly across the entire terrain.
*
* Revision 1.2 1997/07/08 18:20:11 curt
* Working on establishing a hard ground.
*