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58 lines
2.0 KiB
58 lines
2.0 KiB
/***************************************************************************
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sun.h - Sun Rise and Set Calculations
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-------------------
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begin : Friday July 11 2003
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copyright : (C) 2003 by John Ratke
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email : jratke@comcast.net
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***************************************************************************/
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/***************************************************************************
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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***************************************************************************/
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#ifndef SUN_H
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#define SUN_H
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#include <tqstring.h>
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#include <tqdatetime.h>
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#include <krfcdate.h>
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class Sun
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{
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public:
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/* Constructs a Sun instance for calculating sun rise and set
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* times. Users should construct it once and then call one or
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* more of the other four public functions.
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*
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* Inputs are the location on earth to calculate the rise/set time
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* for (for example, the location of a particular weather station),
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* the current date, and the offset in minutes from universal time
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* to the local time zone.
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*
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*/
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Sun( const TQString &latitude,
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const TQString &longitude,
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TQDate date = TQDate::tqcurrentDate(),
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const int localUTCOffset = KRFCDate::localUTCOffset() );
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TQTime computeRiseTime();
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TQTime computeSetTime();
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TQTime computeCivilTwilightStart();
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TQTime computeCivilTwilightEnd();
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private:
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TQTime convertDoubleToLocalTime( const double time );
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const TQDate m_date;
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const double m_lat;
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const double m_lon;
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const int m_localUTCOffset;
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};
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#endif
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