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UnitsApi.cpp
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UnitsApi.cpp
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/***************************************************************************
* Copyright (c) 2009 Jürgen Riegel <FreeCAD@juergen-riegel.net> *
* *
* 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"
#ifdef __GNUC__
# include <unistd.h>
#endif
#include <CXX/WrapPython.h>
#include <memory>
#include <QString>
#include "Exception.h"
#include "UnitsApi.h"
#include "UnitsSchemaCentimeters.h"
#include "UnitsSchemaInternal.h"
#include "UnitsSchemaImperial1.h"
#include "UnitsSchemaMKS.h"
#include "UnitsSchemaMmMin.h"
#include "UnitsSchemaFemMilliMeterNewton.h"
#ifndef M_PI
#define M_PI 3.14159265358979323846
#endif
#ifndef M_E
#define M_E 2.71828182845904523536
#endif
#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
using namespace Base;
// === static attributes ================================================
UnitsSchemaPtr UnitsApi::UserPrefSystem(new UnitsSchemaInternal());
UnitSystem UnitsApi::currentSystem = UnitSystem::SI1;
int UnitsApi::UserPrefDecimals = 2;
const char* UnitsApi::getDescription(UnitSystem system)
{
switch (system) {
case UnitSystem::SI1:
return "Standard (mm/kg/s/degree)";
case UnitSystem::SI2:
return "MKS (m/kg/s/degree)";
case UnitSystem::Imperial1:
return "US customary (in/lb)";
case UnitSystem::ImperialDecimal:
return "Imperial decimal (in/lb)";
case UnitSystem::Centimeters:
return "Building Euro (cm/m²/m³)";
case UnitSystem::ImperialBuilding:
return "Building US (ft-in/sqft/cft)";
case UnitSystem::MmMin:
return "Metric small parts & CNC(mm, mm/min)";
case UnitSystem::ImperialCivil:
return "Imperial for Civil Eng (ft, ft/sec)";
case UnitSystem::FemMilliMeterNewton:
return "FEM (mm, N, s)";
default:
return "Unknown schema";
}
}
UnitsSchemaPtr UnitsApi::createSchema(UnitSystem s)
{
switch (s) {
case UnitSystem::SI1:
return std::make_unique<UnitsSchemaInternal>();
case UnitSystem::SI2:
return std::make_unique<UnitsSchemaMKS>();
case UnitSystem::Imperial1:
return std::make_unique<UnitsSchemaImperial1>();
case UnitSystem::ImperialDecimal:
return std::make_unique<UnitsSchemaImperialDecimal>();
case UnitSystem::Centimeters:
return std::make_unique<UnitsSchemaCentimeters>();
case UnitSystem::ImperialBuilding:
return std::make_unique<UnitsSchemaImperialBuilding>();
case UnitSystem::MmMin:
return std::make_unique<UnitsSchemaMmMin>();
case UnitSystem::ImperialCivil:
return std::make_unique<UnitsSchemaImperialCivil>();
case UnitSystem::FemMilliMeterNewton:
return std::make_unique<UnitsSchemaFemMilliMeterNewton>();
default:
break;
}
return nullptr;
}
void UnitsApi::setSchema(UnitSystem s)
{
if (UserPrefSystem) {
UserPrefSystem->resetSchemaUnits(); // for schemas changed the Quantity constants
}
UserPrefSystem = createSchema(s);
currentSystem = s;
// for wrong value fall back to standard schema
if (!UserPrefSystem) {
UserPrefSystem = std::make_unique<UnitsSchemaInternal>();
currentSystem = UnitSystem::SI1;
}
UserPrefSystem->setSchemaUnits(); // if necessary a unit schema can change the constants in Quantity (e.g. mi=1.8km rather then 1.6km).
}
QString UnitsApi::toString(const Base::Quantity& q, const QuantityFormat& f)
{
QString value = QString::fromLatin1("'%1 %2'").arg(q.getValue(), 0, f.toFormat(), f.precision)
.arg(q.getUnit().getString());
return value;
}
QString UnitsApi::toNumber(const Base::Quantity& q, const QuantityFormat& f)
{
return toNumber(q.getValue(), f);
}
QString UnitsApi::toNumber(double d, const QuantityFormat& f)
{
QString number = QString::fromLatin1("%1").arg(d, 0, f.toFormat(), f.precision);
return number;
}
//return true if the current user schema uses multiple units for length (ex. Ft/In)
bool UnitsApi::isMultiUnitLength()
{
return UserPrefSystem->isMultiUnitLength();
}
//return true if the current user schema uses multiple units for angles (ex. DMS)
bool UnitsApi::isMultiUnitAngle()
{
return UserPrefSystem->isMultiUnitAngle();
}
// === static translation methods ==========================================
QString UnitsApi::schemaTranslate(const Base::Quantity& quant, double &factor, QString &unitString)
{
return UserPrefSystem->schemaTranslate(quant,factor,unitString);
}
double UnitsApi::toDouble(PyObject *ArgObj, const Base::Unit &u)
{
if (PyUnicode_Check(ArgObj)) {
QString str = QString::fromUtf8(PyUnicode_AsUTF8(ArgObj));
// Parse the string
Quantity q = Quantity::parse(str);
if (q.getUnit() == u)
return q.getValue();
throw Base::UnitsMismatchError("Wrong unit type!");
}
else if (PyFloat_Check(ArgObj)) {
return PyFloat_AsDouble(ArgObj);
}
else if (PyLong_Check(ArgObj)) {
return static_cast<double>(PyLong_AsLong(ArgObj));
}
else {
throw Base::UnitsMismatchError("Wrong parameter type!");
}
}
Quantity UnitsApi::toQuantity(PyObject *ArgObj, const Base::Unit &u)
{
double d;
if (PyUnicode_Check(ArgObj)) {
QString str = QString::fromUtf8(PyUnicode_AsUTF8(ArgObj));
// Parse the string
Quantity q = Quantity::parse(str);
d = q.getValue();
}
else if (PyFloat_Check(ArgObj)) {
d = PyFloat_AsDouble(ArgObj);
}
else if (PyLong_Check(ArgObj)) {
d = static_cast<double>(PyLong_AsLong(ArgObj));
}
else {
throw Base::UnitsMismatchError("Wrong parameter type!");
}
return Quantity(d,u);
}
void UnitsApi::setDecimals(int prec)
{
UserPrefDecimals = prec;
}
int UnitsApi::getDecimals()
{
return UserPrefDecimals;
}