SatellitesTLEItem.h

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//
// This file is part of the Marble Virtual Globe.
//
// This program is free software licensed under the GNU LGPL. You can
// find a copy of this license in LICENSE.txt in the top directory of
// the source code.
//
// Copyright 2011 Guillaume Martres <smarter@ubuntu.com>
//

#ifndef MARBLE_SATELLITESTLEITEM_H
#define MARBLE_SATELLITESTLEITEM_H

#include "TrackerPluginItem.h"

#include "GeoDataCoordinates.h"
#include "GeoDataTrack.h"

#include "sgp4/sgp4unit.h"

class QColor;

namespace Marble {

class GeoDataTrack;
class MarbleClock;

class SatellitesTLEItem : public TrackerPluginItem
{
public:
    SatellitesTLEItem( const QString &name,
                       elsetrec satrec,
                       const MarbleClock *clock );

    void update();

private:
    double m_earthSemiMajorAxis; // in km
    elsetrec m_satrec;

    GeoDataTrack *m_track;

    const MarbleClock *m_clock;

    void setDescription();

    void addPointAt( const QDateTime &dateTime );

    GeoDataCoordinates fromTEME( double x, double y, double z, double gmst ) const;

    QDateTime timeAtEpoch() const;

    double period() const;

    double apogee() const;
    double perigee() const;
    double semiMajorAxis() const;

    double inclination() const;

    double gmst( double minutes ) const;

    static double square( double x );
};

} // namespace Marble

#endif // MARBLE_SATELLITESTLEITEM_H