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dms.h

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/***************************************************************************
                          dms.h  -  K Desktop Planetarium
                             -------------------
    begin                : Sun Feb 11 2001
    copyright            : (C) 2001 by Jason Harris
    email                : jharris@30doradus.org
 ***************************************************************************/

/***************************************************************************
 *                                                                         *
 *   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 DMS_H
#define DMS_H

#include <math.h>
#include <qstring.h>
#include <kdebug.h>

//TODO: Remove these when KStarsDateTime is added!
#define J2000 2451545.0 //Julian Date for noon on Jan 1, 2000 (epoch J2000)
                       //defined here because this file is included in every other class.
#define B1950 2433282.4235  // Julian date for Jan 0.9235, 1950

class dms {
public:
    dms( const int &d=0, const int &m=0, const int &s=0, const int &ms=0 ) { setD( d, m, s, ms ); }

  dms( const double &x ) { setD( x ); }

    dms( const QString &s, bool isDeg=true ) { setFromString( s, isDeg ); }

    ~dms() {}

  const int degree() const { return int( D ) ; }

  const int arcmin() const;

  const int arcsec() const;

    const int marcsec() const;

    const double& Degrees() const { return D; }

    const int hour() const { return int( reduce().Degrees()/15.0 ); }

    const int minute() const;

    const int second() const;

    const int msecond() const;

    const double Hours() const { return reduce().Degrees()/15.0; }

  void setDeg( const int &d ) { setD( d, arcmin(), arcsec() ); }

  void setArcMin( const int &m ) { setD( degree(), m, arcsec() ); }

  void setArcSec( const int &s ) { setD( degree(), arcmin(), s ); }

  void setD( const double &x );

    void setD( const int &d, const int &m, const int &s, const int &ms=0 );

    void setHour( const int &h ) { setH( h, minute(), second() ); }

    void setHMin( const int &m ) { setH( hour(), m, second() ); }

    void setHSec( const int &s ) { setH( hour(), minute(), s ); }

    void setH( const double &x );

    void setH( const int &h, const int &m, const int &s, const int &ms=0 );

    void set( const dms &d ) { setD( d.Degrees() ); }

    void set( const double &d ) { setD( d ); }

    bool setFromString( const QString &s, bool isDeg=true );

//  dms operator+ ( dms d );
//  dms operator- ( dms d );
//  dms operator= ( const dms a ) { return a; }
//  dms operator= ( const double &d ) { return (dms( d )); }

    void SinCos( double &s, double &c ) const;

    const double& sin( void ) const;

    const double& cos( void ) const;

    const double& radians( void ) const;

    void setRadians( const double &a );

    const dms reduce( void ) const;

    const QString toDMSString(const bool forceSign = false) const;

    const QString toHMSString() const;

    static const double PI;

    static const double DegToRad;

    static dms fromString(QString & s, bool deg);

private:
    double D;

    mutable double Radians;
    mutable double Sin, Cos;
    mutable bool scDirty, rDirty;
};

#endif

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