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Quantity.h
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Quantity.h
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/***************************************************************************
* Copyright (c) 2013 Juergen Riegel *
* *
* This file is part of the FreeCAD CAx development system. *
* *
* This library 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 of the License, or (at your option) any later version. *
* *
* This library 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 Library General Public License for more details. *
* *
* You should have received a copy of the GNU Library General Public *
* License along with this library; see the file COPYING.LIB. If not, *
* write to the Free Software Foundation, Inc., 59 Temple Place, *
* Suite 330, Boston, MA 02111-1307, USA *
* *
***************************************************************************/
#ifndef BASE_Quantity_H
#define BASE_Quantity_H
#include "Unit.h"
#include <QString>
#ifndef DOUBLE_MAX
# define DOUBLE_MAX 1.7976931348623157E+308 /* max decimal value of a "double"*/
#endif
#ifndef DOUBLE_MIN
# define DOUBLE_MIN 2.2250738585072014E-308 /* min decimal value of a "double"*/
#endif
namespace Base {
/**
* The Quantity class.
*/
class BaseExport Quantity
{
public:
/// default constructor
Quantity(void);
Quantity(const Quantity&);
Quantity(double Value, const Unit& unit=Unit());
/// Destruction
~Quantity () {}
/** Operators. */
//@{
Quantity operator *(const Quantity &p) const;
Quantity operator +(const Quantity &p) const;
Quantity operator -(const Quantity &p) const;
Quantity operator -(void) const;
Quantity operator /(const Quantity &p) const;
bool operator ==(const Quantity&) const;
bool operator < (const Quantity&) const;
bool operator > (const Quantity&) const;
Quantity& operator =(const Quantity&);
Quantity pow(const Quantity&)const;
//@}
/// transfer to user prefered unit/potence
QString getUserString(double &factor,QString &unitString)const;
QString getUserString(void)const{ // to satisfy GCC
double dummy1;
QString dummy2;
return getUserString(dummy1,dummy2);
}
static Quantity parse(const QString &string);
/// returns the unit of the quantity
const Unit & getUnit(void) const{return _Unit;}
/// set the unit of the quantity
void setUnit(const Unit &un){_Unit = un;}
/// get the Value of the quantity
double getValue(void) const{return _Value;}
/// set the value of the quantity
void setValue(double val){_Value = val;}
/** get the Value in a special unit given as quantity.
* One can use one of the predifeined quantity units in this class
*/
double getValueAs(const Quantity &)const;
/// true if it has a number without a unit
bool isDimensionless(void)const;
/// true if it has a number and a valid unit
bool isQuantity(void)const;
/// true if it has a number with or without a unit
bool isValid(void)const;
/// sets the quantity invalid
void setInvalid(void);
/** Predefined Unit types. */
//@{
static Quantity NanoMetre;
static Quantity MicroMetre;
static Quantity CentiMetre;
static Quantity DeciMetre;
static Quantity Metre;
static Quantity MilliMetre;
static Quantity KiloMetre;
static Quantity Liter;
static Quantity MicroGram;
static Quantity MilliGram;
static Quantity Gram;
static Quantity KiloGram;
static Quantity Ton;
static Quantity Second;
static Quantity Minute;
static Quantity Hour;
static Quantity Ampere;
static Quantity MilliAmpere;
static Quantity KiloAmpere;
static Quantity MegaAmpere;
static Quantity Kelvin;
static Quantity MilliKelvin;
static Quantity MicroKelvin;
static Quantity Mole;
static Quantity Candela;
static Quantity Inch;
static Quantity Foot;
static Quantity Thou;
static Quantity Yard;
static Quantity Pound;
static Quantity Ounce;
static Quantity Stone;
static Quantity Hundredweights;
static Quantity Mile;
static Quantity PoundForce;
static Quantity Newton;
static Quantity KiloNewton;
static Quantity MegaNewton;
static Quantity MilliNewton;
static Quantity Pascal;
static Quantity KiloPascal;
static Quantity MegaPascal;
static Quantity GigaPascal;
static Quantity Torr;
static Quantity mTorr;
static Quantity yTorr;
static Quantity PSI;
static Quantity KSI;
static Quantity Watt;
static Quantity VoltAmpere;
static Quantity Joule;
static Quantity NewtonMeter;
static Quantity VoltAmpereSecond;
static Quantity WattSecond;
static Quantity KMH;
static Quantity MPH;
static Quantity Degree;
static Quantity Radian;
static Quantity Gon;
//@}
protected:
double _Value;
Unit _Unit;
};
} // namespace Base
#endif // BASE_Quantity_H