81 Zeilen
1.9 KiB
C++
81 Zeilen
1.9 KiB
C++
/**
|
|
* server/src/enum/weightunit.hpp
|
|
*
|
|
* This file is part of the traintastic source code.
|
|
*
|
|
* Copyright (C) 2019-2020 Reinder Feenstra
|
|
*
|
|
* 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 TRAINTASTIC_SERVER_ENUM_WEIGHTUNIT_HPP
|
|
#define TRAINTASTIC_SERVER_ENUM_WEIGHTUNIT_HPP
|
|
|
|
#include <traintastic/enum/weightunit.hpp>
|
|
#include "../core/convertunit.hpp"
|
|
|
|
template<>
|
|
constexpr double convertUnit(double value, WeightUnit from, WeightUnit to)
|
|
{
|
|
const double ratioTon = 1000;
|
|
const double ratioShortTons = 907.18474;
|
|
const double ratioLongTons = 1016.04691;
|
|
|
|
if(from == to)
|
|
return value;
|
|
|
|
// convert <from> to kg:
|
|
switch(from)
|
|
{
|
|
case WeightUnit::KiloGram:
|
|
break;
|
|
|
|
case WeightUnit::Ton:
|
|
value *= ratioTon;
|
|
break;
|
|
|
|
case WeightUnit::ShortTons:
|
|
value *= ratioShortTons;
|
|
break;
|
|
|
|
case WeightUnit::LongTons:
|
|
value *= ratioLongTons;
|
|
break;
|
|
}
|
|
|
|
// convert kg to <to>:
|
|
switch(to)
|
|
{
|
|
case WeightUnit::KiloGram:
|
|
break;
|
|
|
|
case WeightUnit::Ton:
|
|
value /= ratioTon;
|
|
break;
|
|
|
|
case WeightUnit::ShortTons:
|
|
value /= ratioShortTons;
|
|
break;
|
|
|
|
case WeightUnit::LongTons:
|
|
value /= ratioLongTons;
|
|
break;
|
|
}
|
|
|
|
return value;
|
|
}
|
|
|
|
#endif
|