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// This file is part of Kig, a KDE program for Interactive Geometry...
// Copyright (C) 2004 Dominique Devriese <[email protected]>
// Copyright (C) 2004 Pino Toscano <[email protected]>
// 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.
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
// 02110-1301, USA.
#ifndef KIG_MISC_GONIOMETRY_H
#define KIG_MISC_GONIOMETRY_H
#include <qstringlist.h>
/**
* Manage an angle and convert it from/to other goniometric systems.
*/
class Goniometry
{
public:
enum System { Deg, Rad, Grad };
Goniometry();
Goniometry( double value, Goniometry::System system );
~Goniometry();
void setValue( double value );
const double value() const;
/**
* Set the system of the current angle to \p system, but it doesn't
* convert the value to the new system.
*
* \see convertTo()
*/
void setSystem( Goniometry::System system );
/**
* Set the system of the current angle to \p system and convert the
* value to the new system using \ref convert().
*
* \see setSystem()
*/
void convertTo( Goniometry::System system );
const Goniometry::System system() const;
double getValue( Goniometry::System system );
/**
* The most useful method of this class: convert the specified
* \p angle from the system \p from to the system \p to.
*/
static double convert( const double angle, const Goniometry::System from, const Goniometry::System to );
/**
* Get a list of the supported goniometric systems.
*/
static QStringList systemList();
static Goniometry::System intToSystem( const int index );
Goniometry& operator= ( const Goniometry& g );
private:
double mvalue;
typedef Goniometry::System goniosys;
goniosys msys;
};
#endif
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