File indexing completed on 2024-03-24 15:17:53

0001 /*
0002     SPDX-FileCopyrightText: 2002 Mark Hollomon <mhh@mindspring.com>
0003 
0004     SPDX-License-Identifier: GPL-2.0-or-later
0005 */
0006 
0007 #pragma once
0008 
0009 #include "ksplanet.h"
0010 
0011 #include <QString>
0012 
0013 /**
0014  * @class KSSun
0015  *
0016  * Child class of KSPlanetBase; encapsulates information about the Sun.
0017  *
0018  * @short Provides necessary information about the Sun.
0019  *
0020  * @author Mark Hollomon
0021  * @version 1.0
0022  */
0023 class KSSun : public KSPlanet
0024 {
0025   public:
0026     /**
0027      * Constructor.
0028      *
0029      * Defines constants needed by findPosition(). Sets Ecliptic coordinates appropriate for J2000.
0030      */
0031     KSSun();
0032 
0033     KSSun *clone() const override;
0034     SkyObject::UID getUID() const override;
0035 
0036     virtual ~KSSun() override = default;
0037 
0038     /**
0039      * Read orbital data from disk
0040      *
0041      * @note reimplemented from KSPlanet
0042      * @note we actually read Earth's orbital data.  The Sun's geocentric
0043      * ecliptic coordinates are by definition exactly the opposite of the
0044      * Earth's heliocentric ecliptic coordinates.
0045      */
0046     bool loadData() override;
0047 
0048   protected:
0049     /**
0050      * Determine geocentric RA, Dec coordinates for the Epoch given in the argument.
0051      *
0052      * @p Epoch current Julian Date
0053      * @p Earth pointer to earth object
0054      */
0055     bool findGeocentricPosition(const KSNumbers *num, const KSPlanetBase *Earth = nullptr) override;
0056 
0057   private:
0058     void findMagnitude(const KSNumbers *) override;
0059 };
0060 
0061 long double equinox(int year, int d, int m, int angle);