ksconjunct.h

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/***************************************************************************
                          ksconjunct.h  -  K Desktop Planetarium
                             -------------------
    begin                : Sat Mar 15 2008
    copyright            : (C) 2008 by Akarsh Simha
    email                : kstar@bas.org.in
 ***************************************************************************/

/***************************************************************************
 *                                                                         *
 *   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 KSCONJUNCT_H_
#define KSCONJUNCT_H_

#include <QMap>
#include <QObject>

#include "dms.h"
#include "skyobjects/skyobject.h"
#include "skyobjects/ksplanet.h"
#include "skyobjects/ksplanetbase.h"
#include "ksnumbers.h"

class SkyObject;
class KSNumbers;
class KSPlanetBase;
class KSPlanet; 
class dms;

class KSConjunct :public QObject {
 Q_OBJECT
 
 public:
  KSConjunct();

  ~KSConjunct() { }

  void setGeoLocation( GeoLocation *geo );

  QMap<long double, dms> findClosestApproach(SkyObject& Object1, KSPlanetBase& Object2, long double startJD, long double stopJD, dms maxSeparation, bool _opposition=false);
  
 signals:
  void madeProgress( int progress );

 private:

  // TODO: Make pointers to Object1 and Object2 private objects instead of passing them to the methods again and again. 
  //       Should improve performance, at least marginally.

  dms findDistance(long double jd, SkyObject *Object1, KSPlanetBase *Object2);

  bool findPrecise(QPair<long double, dms> *out, SkyObject *Object1, KSPlanetBase *Object2, long double jd, double step, int prevSign);

  int sgn(dms a);

  bool opposition;
  GeoLocation *geoPlace;
};

#endif