angle.cpp

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/*
 *   Copyright (C) 2010 Petri Damstén <damu@iki.fi>
 *
 *   This program is free software; you can redistribute it and/or modify
 *   it under the terms of the GNU Library General Public License as
 *   published by the Free Software Foundation; either version 2, 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 Library 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.
 */

#include "angle.h"
#include "converter.h"
#include <klocale.h>
#include <math.h>

using namespace KUnitConversion;

class RadiansConv : public Complex
{
    double toDefault(double value) const { return (value / (2 * M_PI)) * 360.0; };
    double fromDefault(double value) const { return (value / 360.0) * (2 * M_PI); };
};

Angle::Angle() : UnitCategory(AngleCategory)
{
    setName(i18n("Angle"));
    setSymbolStringFormat(ki18nc("%1 value, %2 unit symbol (angle)", "%1 %2"));

    setDefaultUnit(UP(Degree, 1,
      i18nc("angle unit symbol", "°"),
      i18nc("unit description in lists", "degrees"),
      i18nc("unit synonyms for matching user input", "deg;degree;degrees;°"),
      ki18nc("amount in units (real)", "%1 degrees"),
      ki18ncp("amount in units (integer)", "%1 degree", "%1 degrees")
    ));
    U(Radian, new RadiansConv(),
      i18nc("angle unit symbol", "rad"),
      i18nc("unit description in lists", "radians"),
      i18nc("unit synonyms for matching user input", "rad;radian;radians"),
      ki18nc("amount in units (real)", "%1 radians"),
      ki18ncp("amount in units (integer)", "%1 radian", "%1 radians")
    );
    U(Gradian, 360.0 / 400.0,
      i18nc("angle unit symbol", "grad"),
      i18nc("unit description in lists", "gradians"),
      i18nc("unit synonyms for matching user input", "grad;gradian;gradians;grade;gon"),
      ki18nc("amount in units (real)", "%1 gradians"),
      ki18ncp("amount in units (integer)", "%1 gradian", "%1 gradians")
    );
    U(ArcMinute, 1.0 / 60.0,
      i18nc("angle unit symbol", "'"),
      i18nc("unit description in lists", "arc minutes"),
      i18nc("unit synonyms for matching user input", "minute of arc;MOA;arcminute;minute;'"),
      ki18nc("amount in units (real)", "%1 arc minutes"),
      ki18ncp("amount in units (integer)", "%1 arc minute", "%1 arc minutes")
    );
    U(ArcSecond, 1.0 / 3600.0,
      i18nc("angle unit symbol", "\""),
      i18nc("unit description in lists", "arc seconds"),
      i18nc("unit synonyms for matching user input", "second of arc;arcsecond;second;\""),
      ki18nc("amount in units (real)", "%1 arc seconds"),
      ki18ncp("amount in units (integer)", "%1 arc second", "%1 arc seconds")
    );

    setMostCommonUnits(QList<int>() << Degree << Radian << ArcMinute << ArcSecond);
}