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Quantity.cpp
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Quantity.cpp
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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 *
* *
***************************************************************************/
#include "PreCompiled.h"
#ifndef _PreComp_
# include <sstream>
#endif
#include <cmath>
#include "Quantity.h"
#include "Exception.h"
#include "UnitsApi.h"
// suppress annoying warnings from generated source files
#ifdef _MSC_VER
# pragma warning(disable : 4003)
# pragma warning(disable : 4018)
# pragma warning(disable : 4065)
# pragma warning( disable : 4273 )
# pragma warning(disable : 4335) // disable MAC file format warning on VC
#endif
using namespace Base;
Quantity::Quantity()
{
this->_Value = 0.0;
}
Quantity::Quantity(const Quantity& that)
{
*this = that ;
}
Quantity::Quantity(double Value, const Unit& unit)
{
this->_Unit = unit;
this->_Value = Value;
}
double Quantity::getValueAs(const Quantity &q)const
{
return _Value/q.getValue();
}
bool Quantity::operator ==(const Quantity& that) const
{
return (this->_Value == that._Value) && (this->_Unit == that._Unit) ;
}
bool Quantity::operator <(const Quantity& that) const
{
if(this->_Unit != that._Unit)
throw Base::Exception("Quantity::operator <(): quantities need to have same unit to compare");
return (this->_Value < that._Value) ;
}
Quantity Quantity::operator *(const Quantity &p) const
{
return Quantity(this->_Value * p._Value,this->_Unit * p._Unit);
}
Quantity Quantity::operator /(const Quantity &p) const
{
return Quantity(this->_Value / p._Value,this->_Unit / p._Unit);
}
Quantity Quantity::pow(const Quantity &p) const
{
if(!p._Unit.isEmpty())
throw Base::Exception("Quantity::pow(): exponent must not have a unit");
return Quantity(
std::pow(this->_Value, p._Value),
this->_Unit.pow((short)p._Value)
);
}
Quantity Quantity::operator +(const Quantity &p) const
{
if(this->_Unit != p._Unit)
throw Base::Exception("Quantity::operator +(): Unit missmatch in plus operation");
return Quantity(this->_Value + p._Value,this->_Unit);
}
Quantity Quantity::operator -(const Quantity &p) const
{
if(this->_Unit != p._Unit)
throw Base::Exception("Quantity::operator +(): Unit missmatch in plus operation");
return Quantity(this->_Value - p._Value,this->_Unit);
}
Quantity Quantity::operator -(void) const
{
return Quantity(-(this->_Value),this->_Unit);
}
Quantity& Quantity::operator = (const Quantity &New)
{
this->_Value = New._Value;
this->_Unit = New._Unit;
return *this;
}
QString Quantity::getUserString(double &factor,QString &unitString)const
{
return Base::UnitsApi::schemaTranslate(*this,factor,unitString);
}
//double Quantity::getUserPrefered(QString &unitString)const
//{
// return Base::UnitsApi::schemaPrefUnit(_Unit,unitString).getValue() * _Value;
//}
//
//std::string Quantity::getUserString(void)const
//{
// std::stringstream sstream;
// sstream << _Value << _Unit.getString();
// //TODO: implementing
// return sstream.str();
//}
/// true if it has a number without a unit
bool Quantity::isDimensionless(void)const
{
return _Value != DOUBLE_MIN && _Unit.isEmpty();
}
// true if it has a number and a valid unit
bool Quantity::isQuantity(void)const
{
return _Value != DOUBLE_MIN && !_Unit.isEmpty();
}
// true if it has a number with or without a unit
bool Quantity::isValid(void)const
{
return _Value != DOUBLE_MIN ;
}
void Quantity::setInvalid(void)
{
_Value = DOUBLE_MIN ;
}
// === Predefined types =====================================================
Quantity Quantity::NanoMetre (1.0e-6 ,Unit(1));
Quantity Quantity::MicroMetre (1.0e-3 ,Unit(1));
Quantity Quantity::MilliMetre (1.0 ,Unit(1));
Quantity Quantity::CentiMetre (10.0 ,Unit(1));
Quantity Quantity::DeciMetre (100.0 ,Unit(1));
Quantity Quantity::Metre (1.0e3 ,Unit(1));
Quantity Quantity::KiloMetre (1.0e6 ,Unit(1));
Quantity Quantity::Liter (1000000.0 ,Unit(3));
Quantity Quantity::MicroGram (1.0e-9 ,Unit(0,1));
Quantity Quantity::MilliGram (1.0e-6 ,Unit(0,1));
Quantity Quantity::Gram (1.0e-3 ,Unit(0,1));
Quantity Quantity::KiloGram (1.0 ,Unit(0,1));
Quantity Quantity::Ton (1.0e3 ,Unit(0,1));
Quantity Quantity::Second (1.0 ,Unit(0,0,1));
Quantity Quantity::Minute (60.0 ,Unit(0,0,1));
Quantity Quantity::Hour (3600.0 ,Unit(0,0,1));
Quantity Quantity::Ampere (1.0 ,Unit(0,0,0,1));
Quantity Quantity::MilliAmpere (0.001 ,Unit(0,0,0,1));
Quantity Quantity::KiloAmpere (1000.0 ,Unit(0,0,0,1));
Quantity Quantity::MegaAmpere (1.0e6 ,Unit(0,0,0,1));
Quantity Quantity::Kelvin (1.0 ,Unit(0,0,0,0,1));
Quantity Quantity::MilliKelvin (0.001 ,Unit(0,0,0,0,1));
Quantity Quantity::MicroKelvin (0.000001 ,Unit(0,0,0,0,1));
Quantity Quantity::Mole (1.0 ,Unit(0,0,0,0,0,1));
Quantity Quantity::Candela (1.0 ,Unit(0,0,0,0,0,0,1));
Quantity Quantity::Inch (25.4 ,Unit(1));
Quantity Quantity::Foot (304.8 ,Unit(1));
Quantity Quantity::Thou (0.0254 ,Unit(1));
Quantity Quantity::Yard (914.4 ,Unit(1));
Quantity Quantity::Mile (1609344.0 ,Unit(1));
Quantity Quantity::Pound (0.45359237 ,Unit(0,1));
Quantity Quantity::Ounce (0.0283495231 ,Unit(0,1));
Quantity Quantity::Stone (6.35029318 ,Unit(0,1));
Quantity Quantity::Hundredweights (50.80234544 ,Unit(0,1));
Quantity Quantity::Newton (1000.0 ,Unit(1,1,-2)); // Newton (kg*m/s^2)
Quantity Quantity::KiloNewton (1e+6 ,Unit(1,1,-2));
Quantity Quantity::MegaNewton (1e+9 ,Unit(1,1,-2));
Quantity Quantity::MilliNewton (1.0 ,Unit(1,1,-2));
Quantity Quantity::Pascal (0.001 ,Unit(-1,1,-2)); // Pascal (kg/m*s^2 or N/m^2)
Quantity Quantity::KiloPascal (1.00 ,Unit(-1,1,-2));
Quantity Quantity::MegaPascal (1000.0 ,Unit(-1,1,-2));
Quantity Quantity::GigaPascal (1e+6 ,Unit(-1,1,-2));
Quantity Quantity::PSI (0.145038 ,Unit(-1,1,-2)); // pounds/in^2
Quantity Quantity::KSI (145.038 ,Unit(-1,1,-2)); // 1000 x pounds/in^2
Quantity Quantity::Watt (1e+6 ,Unit(2,1,-3)); // Watt (kg*m^2/s^3)
Quantity Quantity::VoltAmpere (1e+6 ,Unit(2,1,-3)); // VoltAmpere (kg*m^2/s^3)
Quantity Quantity::Joul (1e+6 ,Unit(2,1,-2)); // Joule (kg*m^2/s^2)
Quantity Quantity::NewtonMeter (1e+6 ,Unit(2,1,-2)); // Joule (kg*m^2/s^2)
Quantity Quantity::VoltAmpereSecond (1e+6 ,Unit(2,1,-2)); // Joule (kg*m^2/s^2)
Quantity Quantity::WattSecond (1e+6 ,Unit(2,1,-2)); // Joule (kg*m^2/s^2)
Quantity Quantity::KMH (277.778 ,Unit(1,0,-1)); // km/h
Quantity Quantity::MPH (447.04 ,Unit(1,0,-1)); // Mile/h
Quantity Quantity::Degree (1.0 ,Unit(0,0,0,0,0,0,0,1)); // degree (internal standard angle)
Quantity Quantity::Radian (180/M_PI ,Unit(0,0,0,0,0,0,0,1)); // radian
Quantity Quantity::Gon (360.0/400.0 ,Unit(0,0,0,0,0,0,0,1)); // gon
// === Parser & Scanner stuff ===============================================
// include the Scanner and the Parser for the Quantitys
Quantity QuantResult;
// error func
void Quantity_yyerror(char *errorinfo)
{
throw Base::Exception(errorinfo);
}
// for VC9 (isatty and fileno not supported anymore)
//#ifdef _MSC_VER
//int isatty (int i) {return _isatty(i);}
//int fileno(FILE *stream) {return _fileno(stream);}
//#endif
namespace QuantityParser {
#define YYINITDEPTH 20
// show the parser the lexer method
#define yylex QuantityLexer
int QuantityLexer(void);
// Parser, defined in QuantityParser.y
#include "QuantityParser.c"
#ifndef DOXYGEN_SHOULD_SKIP_THIS
// Scanner, defined in QuantityParser.l
#include "QuantityLexer.c"
#endif // DOXYGEN_SHOULD_SKIP_THIS
}
Quantity Quantity::parse(const char* buffer)
{
// parse from buffer
QuantityParser::YY_BUFFER_STATE my_string_buffer = QuantityParser::yy_scan_string (buffer);
// set the global return variables
QuantResult = Quantity(DOUBLE_MIN);
// run the parser
QuantityParser::yyparse ();
// free the scan buffer
QuantityParser::yy_delete_buffer (my_string_buffer);
//if (QuantResult == Quantity(DOUBLE_MIN))
// throw Base::Exception("Unknown error in Quantity expression");
return QuantResult;
}