#define FG_TIME_H
-#include "../types.h"
+#ifdef WIN32
+# include <windows.h>
+#endif
+
+#include <GL/glut.h>
+#include <time.h>
+
+#include "../Include/types.h"
+#include "../Flight/flight.h"
/* Define a structure containing global time parameters */
-struct time_params {
- /* the point on the earth's surface above which the sun is directly
- * overhead */
- struct fgCartesianPoint fg_sunpos; /* in cartesian coordiantes */
+struct fgTIME {
+ /* the date/time in various forms */
+ time_t cur_time; /* Unix "calendar" time in seconds */
+ struct tm *gmt; /* Break down of GMT time */
+
+ double jd; /* Julian date */
+ double mjd; /* modified Julian date */
+
+ double gst; /* side real time at prime meridian */
+ double lst; /* local side real time */
+
+ double gst_diff; /* the difference between the precise
+ sidereal time algorithm result and the
+ course result. course + diff has good
+ accuracy for the short term */
+};
+
+extern struct fgTIME cur_time_params;
+
+
+/* Lighting is time dependent so it shows up here */
+/* Define a structure containing the global lighting parameters */
+struct fgLIGHT {
+ /* position of the sun in various forms */
double sun_lon, sun_gc_lat; /* in geocentric coordinates */
+ struct fgCartesianPoint fg_sunpos; /* in cartesian coordiantes */
+ GLfloat sun_vec[4]; /* (in view coordinates) */
+ GLfloat sun_vec_inv[4]; /* inverse (in view coordinates) */
+ double sun_angle; /* the angle between the sun and the
+ local horizontal */
+
+ /* Derived lighting values */
+ GLfloat scene_ambient[3]; /* ambient component */
+ GLfloat scene_diffuse[3]; /* diffuse component */
+ GLfloat scene_fog[4]; /* fog color */
+ GLfloat scene_clear[4]; /* clear screen color */
};
-extern struct time_params cur_time_params;
+extern struct fgLIGHT cur_light_params;
+
+
+/* Initialize the time dependent variables */
+void fgTimeInit(struct fgTIME *t);
+
+/* Update the time dependent variables */
+void fgTimeUpdate(struct fgFLIGHT *f, struct fgTIME *t);
#endif /* FG_TIME_H */
/* $Log$
-/* Revision 1.1 1997/08/13 21:56:00 curt
-/* Initial revision.
+/* Revision 1.10 1997/12/15 23:55:07 curt
+/* Add xgl wrappers for debugging.
+/* Generate terrain normals on the fly.
/*
+ * Revision 1.9 1997/12/10 22:37:55 curt
+ * Prepended "fg" on the name of all global structures that didn't have it yet.
+ * i.e. "struct WEATHER {}" became "struct fgWEATHER {}"
+ *
+ * Revision 1.8 1997/12/09 04:25:38 curt
+ * Working on adding a global lighting params structure.
+ *
+ * Revision 1.7 1997/11/25 19:25:41 curt
+ * Changes to integrate Durk's moon/sun code updates + clean up.
+ *
+ * Revision 1.6 1997/09/20 03:34:35 curt
+ * Still trying to get those durned stars aligned properly.
+ *
+ * Revision 1.5 1997/09/16 15:50:31 curt
+ * Working on star alignment and time issues.
+ *
+ * Revision 1.4 1997/09/13 02:00:08 curt
+ * Mostly working on stars and generating sidereal time for accurate star
+ * placement.
+ *
+ * Revision 1.3 1997/09/04 02:17:39 curt
+ * Shufflin' stuff.
+ *
+ * Revision 1.2 1997/08/27 03:30:36 curt
+ * Changed naming scheme of basic shared structures.
+ *
+ * Revision 1.1 1997/08/13 21:56:00 curt
+ * Initial revision.
+ *
*/