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38 lines
695 B
38 lines
695 B
// This file is available in electronic form at http://www.psa.es/sdg/sunpos.htm
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#ifndef __SUNPOS_H
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#define __SUNPOS_H
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// Declaration of some constants
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#define pi 3.14159265358979323846
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#define twopi (2*pi)
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#define rad (pi/180)
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#define dEarthMeanRadius 6371.01 // In km
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#define dAstronomicalUnit 149597890 // In km
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struct cTime
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{
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int iYear;
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int iMonth;
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int iDay;
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double dHours;
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double dMinutes;
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double dSeconds;
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};
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struct cLocation
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{
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double dLongitude;
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double dLatitude;
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};
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struct cSunCoordinates
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{
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double dZenithAngle;
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double dAzimuth;
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};
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void sunpos(cTime udtTime, cLocation udtLocation, cSunCoordinates *udtSunCoordinates);
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#endif
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