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Added conversion constants to fg_constants.h to assist with converting

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between various world units and coordinate systems.
Added gl vendor/renderer/version info to general structure.  Initialized
  in fg_init.cxx
This commit is contained in:
curt 1998-07-03 14:36:11 +00:00
parent 145ecfcf6e
commit 7e90664af7
2 changed files with 35 additions and 7 deletions

25
fg_constants.h
View file

@ -103,10 +103,10 @@
#define RAD_TO_DEG 57.29577951 /* rad*180/pi = deg */ #define RAD_TO_DEG 57.29577951 /* rad*180/pi = deg */
/* Arc seconds to radians */ /* (arcsec*pi)/(3600*180) = rad */ /* Arc seconds to radians */ /* (arcsec*pi)/(3600*180) = rad */
#define ARCSEC_TO_RAD 4.84813681109535993589e-06 #define ARCSEC_TO_RAD 4.84813681109535993589e-06
/* Radians to arc seconds */ /* (rad*3600*180)/pi = arcsec */ /* Radians to arc seconds */ /* (rad*3600*180)/pi = arcsec */
#define RAD_TO_ARCSEC 206264.806247096355156 #define RAD_TO_ARCSEC 206264.806247096355156
/* Feet to Meters */ /* Feet to Meters */
#define FEET_TO_METER 0.3048 #define FEET_TO_METER 0.3048
@ -114,6 +114,17 @@
/* Meters to Feet */ /* Meters to Feet */
#define METER_TO_FEET 3.28083989501312335958 #define METER_TO_FEET 3.28083989501312335958
/* Meters to Nautical Miles, 1 nm = 6076.11549 feet */
#define METER_TO_NM 0.00053995680
/* Nautical Miles to Meters */
#define NM_TO_METER 1852.0000
/* Radians to Nautical Miles, 1 nm = 1/60 of a degree */
#define NM_TO_RAD 0.00029088820866572159
/* Nautical Miles to Radians */
#define RAD_TO_NM 3437.7467707849392526
/* For divide by zero avoidance, this will be close enough to zero */ /* For divide by zero avoidance, this will be close enough to zero */
#define FG_EPSILON 0.0000001 #define FG_EPSILON 0.0000001
@ -134,9 +145,15 @@
/* $Log$ /* $Log$
/* Revision 1.5 1998/05/17 16:56:47 curt /* Revision 1.6 1998/07/03 14:36:11 curt
/* Re-organized PI related constants. /* Added conversion constants to fg_constants.h to assist with converting
/* between various world units and coordinate systems.
/* Added gl vendor/renderer/version info to general structure. Initialized
/* in fg_init.cxx
/* /*
* Revision 1.5 1998/05/17 16:56:47 curt
* Re-organized PI related constants.
*
* Revision 1.4 1998/05/16 13:03:10 curt * Revision 1.4 1998/05/16 13:03:10 curt
* Defined field of view max/min limits. * Defined field of view max/min limits.
* *

17
general.h
View file

@ -35,6 +35,11 @@
/* the general house keeping structure definition */ /* the general house keeping structure definition */
typedef struct { typedef struct {
/* Info about OpenGL */
char *glVendor;
char *glRenderer;
char *glVersion;
/* Last frame rate measurement */ /* Last frame rate measurement */
double frame_rate; double frame_rate;
double frames[FG_FRAME_RATE_HISTORY]; double frames[FG_FRAME_RATE_HISTORY];
@ -47,10 +52,16 @@ extern fgGENERAL general;
/* $Log$ /* $Log$
/* Revision 1.6 1998/05/13 18:23:46 curt /* Revision 1.7 1998/07/03 14:36:11 curt
/* fg_typedefs.h: updated version by Charlie Hotchkiss /* Added conversion constants to fg_constants.h to assist with converting
/* general.h: moved fg_root info to fgOPTIONS structure. /* between various world units and coordinate systems.
/* Added gl vendor/renderer/version info to general structure. Initialized
/* in fg_init.cxx
/* /*
* Revision 1.6 1998/05/13 18:23:46 curt
* fg_typedefs.h: updated version by Charlie Hotchkiss
* general.h: moved fg_root info to fgOPTIONS structure.
*
* Revision 1.5 1998/05/07 23:03:17 curt * Revision 1.5 1998/05/07 23:03:17 curt
* Lowered size of frame rate history buffer. * Lowered size of frame rate history buffer.
* *