43 lines
1.2 KiB
C
43 lines
1.2 KiB
C
#ifndef MoonRise_h
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#define MoonRise_h
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#include <time.h>
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// Size of event search window in hours.
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// Events further away from the search time than MR_WINDOW/2 will not be
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// found. At higher latitudes the moon rise/set intervals become larger, so if
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// you want to find the nearest events this will need to increase. Larger
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// windows will increase interpolation error. Useful values are probably from
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// 12 - 48 but will depend upon your application.
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#define MR_WINDOW 72 // Even integer
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typedef struct {
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double RA; // Right ascension
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double declination; // Declination
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double distance; // Distance
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} skyCoordinates;
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typedef struct {
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time_t queryTime;
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time_t riseTime;
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time_t setTime;
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float riseAz;
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float setAz;
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bool hasRise;
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bool hasSet;
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bool isVisible;
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} MoonRise;
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MoonRise MoonRise_calculate(double latitude, double longitude, time_t t);
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// private:
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void testMoonRiseSet(MoonRise *self, int i, double offsetDays, double latitude, double longitude,
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skyCoordinates *mp);
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skyCoordinates moon(double dayOffset);
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double interpolate(double f0, double f1, double f2, double p);
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double julianDate(time_t t);
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double localSiderealTime(double offsetDays, double longitude);
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#endif
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