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