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To version 0.29

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This commit is contained in:
curt
1998-02-02 20:52:20 +00:00
committed by Tim Moore
parent 0e53f221cf
commit cb1bcb398a
8 changed files with 272 additions and 283 deletions
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83
Astro/orbits.c
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@@ -28,6 +28,7 @@
#include <Astro/orbits.h>
#include <Include/fg_constants.h>
#include <Include/general.h>
#include <Time/fg_time.h>
#include <Main/fg_debug.h>
@@ -35,40 +36,48 @@
struct OrbElements pltOrbElements[9];
//double fgCalcActTime(struct fgTIME t)
//{
// double
// actTime, UT;
// int year;
//
// /* a hack. This one introduces the 2000 problem into the program */
// year = t.gmt->tm_year + 1900;
//
// /* calculate the actual time, remember to add 1 to tm_mon! */
// actTime = 367 * year - 7 *
// (year + ((t.gmt->tm_mon+1) + 9) / 12) / 4 + 275 *
// (t.gmt->tm_mon+1) / 9 + t.gmt->tm_mday - 730530;
//
// UT = t.gmt->tm_hour + ((double) t.gmt->tm_min / 60);
// /*printf("UT = %f\n", UT); */
// actTime += (UT / 24.0);
// #define DEBUG 1
// #ifdef DEBUG
// /* printf(" Actual Time:\n"); */
// /* printf(" current day = %f\t", actTime); */
// /* printf(" GMT = %d, %d, %d, %d, %d, %d\n",
// year, t.gmt->tm_mon, t.gmt->tm_mday,
// t.gmt->tm_hour, t.gmt->tm_min, t.gmt->tm_sec); */
// #endif
// return actTime;
//}
double fgCalcActTime(struct fgTIME t)
{
double
actTime, UT;
int year;
/* a hack. This one introduces the 2000 problem into the program */
year = t.gmt->tm_year + 1900;
/* calculate the actual time, rember to add 1 to tm_mon! */
actTime = 367 * year - 7 *
(year + ((t.gmt->tm_mon+1) + 9) / 12) / 4 + 275 *
(t.gmt->tm_mon+1) / 9 + t.gmt->tm_mday - 730530;
UT = t.gmt->tm_hour + ((double) t.gmt->tm_min / 60);
/*printf("UT = %f\n", UT); */
actTime += (UT / 24.0);
#define DEBUG 1
#ifdef DEBUG
/* printf(" Actual Time:\n"); */
/* printf(" current day = %f\t", actTime); */
/* printf(" GMT = %d, %d, %d, %d, %d, %d\n",
year, t.gmt->tm_mon, t.gmt->tm_mday,
t.gmt->tm_hour, t.gmt->tm_min, t.gmt->tm_sec); */
#endif
return actTime;
return (t.mjd - 36523.5);
}
/* convert degrees to radians */
/*
double fgDegToRad(double angle)
{
return (angle * PIOVER180);
}
*/
double fgCalcEccAnom(double M, double e)
{
double
@@ -85,7 +94,7 @@ double fgCalcEccAnom(double M, double e)
diff = fabs(E0 - E1);
E0 = E1;
}
while (diff > fgDegToRad(0.001));
while (diff > (DEG_TO_RAD * 0.001));
return E0;
}
return eccAnom;
@@ -137,12 +146,11 @@ void fgSolarSystemInit(struct fgTIME t)
if ( (data = fopen(path, "r")) == NULL )
{
fgPrintf( FG_ASTRO, FG_ALERT, "Cannot open data file: '%s'\n", path);
fgPrintf( FG_ASTRO, FG_ALERT,
"Cannot open data file: '%s'\n", path);
return;
}
#ifdef DEBUG
fgPrintf( FG_ASTRO, FG_INFO, " reading datafile %s\n", path);
#endif
/* for all the objects... */
for (i = 0; i < 9; i ++)
@@ -164,20 +172,23 @@ void fgSolarSystemUpdate(struct OrbElements *planet, struct fgTIME t)
actTime = fgCalcActTime(t);
/* calculate the actual orbital elements */
planet->M = fgDegToRad(planet->MFirst + (planet->MSec * actTime)); // angle in radians
planet->w = fgDegToRad(planet->wFirst + (planet->wSec * actTime)); // angle in radians
planet->N = fgDegToRad(planet->NFirst + (planet->NSec * actTime)); // angle in radians
planet->i = fgDegToRad(planet->iFirst + (planet->iSec * actTime)); // angle in radians
planet->M = DEG_TO_RAD * (planet->MFirst + (planet->MSec * actTime)); // angle in radians
planet->w = DEG_TO_RAD * (planet->wFirst + (planet->wSec * actTime)); // angle in radians
planet->N = DEG_TO_RAD * (planet->NFirst + (planet->NSec * actTime)); // angle in radians
planet->i = DEG_TO_RAD * (planet->iFirst + (planet->iSec * actTime)); // angle in radians
planet->e = planet->eFirst + (planet->eSec * actTime);
planet->a = planet->aFirst + (planet->aSec * actTime);
}
/* $Log$
/* Revision 1.4 1998/01/27 00:47:47 curt
/* Incorporated Paul Bleisch's <bleisch@chromatic.com> new debug message
/* system and commandline/config file processing code.
/* Revision 1.5 1998/02/02 20:53:22 curt
/* To version 0.29
/*
* Revision 1.4 1998/01/27 00:47:47 curt
* Incorporated Paul Bleisch's <bleisch@chromatic.com> new debug message
* system and commandline/config file processing code.
*
* Revision 1.3 1998/01/22 02:59:27 curt
* Changed #ifdef FILE_H to #ifdef _FILE_H
*