196 lines
6.3 KiB
C++
196 lines
6.3 KiB
C++
/***************************************************************************
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* Copyright (c) 2011 Jürgen Riegel <juergen.riegel@web.de> *
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* *
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* This file is part of the FreeCAD CAx development system. *
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* *
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* This library is free software; you can redistribute it and/or *
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* modify it under the terms of the GNU Library General Public *
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* License as published by the Free Software Foundation; either *
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* version 2 of the License, or (at your option) any later version. *
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* *
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* This library is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU Library General Public License for more details. *
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* *
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* You should have received a copy of the GNU Library General Public *
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* License along with this library; see the file COPYING.LIB. If not, *
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* write to the Free Software Foundation, Inc., 59 Temple Place, *
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* Suite 330, Boston, MA 02111-1307, USA *
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* *
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***************************************************************************/
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#ifndef BASE_Unit_H
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#define BASE_Unit_H
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#include <cstdint>
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#include <QString>
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#include <FCGlobal.h>
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namespace Base
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{
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#define UnitSignatureLengthBits 4
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#define UnitSignatureMassBits 4
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#define UnitSignatureTimeBits 4
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#define UnitSignatureElectricCurrentBits 4
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#define UnitSignatureThermodynamicTemperatureBits 4
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#define UnitSignatureAmountOfSubstanceBits 4
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#define UnitSignatureLuminousIntensityBits 4
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#define UnitSignatureAngleBits 4
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// Hint:
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// https://en.cppreference.com/w/cpp/language/bit_field
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// https://stackoverflow.com/questions/33723631/signed-bit-field-in-c14
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struct UnitSignature
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{
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int32_t Length: UnitSignatureLengthBits;
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int32_t Mass: UnitSignatureMassBits;
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int32_t Time: UnitSignatureTimeBits;
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int32_t ElectricCurrent: UnitSignatureElectricCurrentBits;
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int32_t ThermodynamicTemperature: UnitSignatureThermodynamicTemperatureBits;
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int32_t AmountOfSubstance: UnitSignatureAmountOfSubstanceBits;
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int32_t LuminousIntensity: UnitSignatureLuminousIntensityBits;
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int32_t Angle: UnitSignatureAngleBits;
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};
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/**
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* The Unit class.
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*/
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class BaseExport Unit
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{
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public:
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/// default constructor
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explicit Unit(int8_t Length,
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int8_t Mass = 0,
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int8_t Time = 0,
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int8_t ElectricCurrent = 0,
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int8_t ThermodynamicTemperature = 0,
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int8_t AmountOfSubstance = 0,
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int8_t LuminousIntensity = 0,
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int8_t Angle = 0);
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Unit();
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Unit(const Unit&) = default;
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Unit(Unit&&) = default;
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explicit Unit(const QString& expr);
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/// Destruction
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~Unit() = default;
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/** Operators. */
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//@{
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inline Unit& operator*=(const Unit& that);
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inline Unit& operator/=(const Unit& that);
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Unit operator*(const Unit&) const;
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Unit operator/(const Unit&) const;
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bool operator==(const Unit&) const;
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bool operator!=(const Unit& that) const
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{
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return !(*this == that);
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}
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Unit& operator=(const Unit&) = default;
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Unit& operator=(Unit&&) = default;
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Unit pow(double exp) const;
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//@}
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/// get the unit signature
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const UnitSignature& getSignature() const
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{
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return Sig;
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}
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bool isEmpty() const;
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QString getString() const;
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/// get the type as an string such as "Area", "Length" or "Pressure".
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QString getTypeString() const;
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/** Predefined Unit types. */
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//@{
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/// Length unit
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static const Unit Length;
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/// Mass unit
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static const Unit Mass;
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/// Angle
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static const Unit Angle;
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static const Unit AngleOfFriction;
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static const Unit Density;
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static const Unit Area;
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static const Unit Volume;
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static const Unit TimeSpan;
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static const Unit Frequency;
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static const Unit Velocity;
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static const Unit Acceleration;
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static const Unit Temperature;
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static const Unit CurrentDensity;
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static const Unit ElectricCurrent;
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static const Unit ElectricPotential;
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static const Unit ElectricCharge;
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static const Unit MagneticFieldStrength;
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static const Unit MagneticFlux;
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static const Unit MagneticFluxDensity;
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static const Unit Magnetization;
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static const Unit ElectricalCapacitance;
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static const Unit ElectricalInductance;
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static const Unit ElectricalConductance;
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static const Unit ElectricalResistance;
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static const Unit ElectricalConductivity;
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static const Unit AmountOfSubstance;
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static const Unit LuminousIntensity;
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// Pressure
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static const Unit CompressiveStrength;
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static const Unit Pressure;
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static const Unit ShearModulus;
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static const Unit Stress;
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static const Unit UltimateTensileStrength;
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static const Unit YieldStrength;
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static const Unit YoungsModulus;
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static const Unit Stiffness;
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static const Unit StiffnessDensity;
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static const Unit Force;
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static const Unit Work;
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static const Unit Power;
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static const Unit SpecificEnergy;
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static const Unit ThermalConductivity;
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static const Unit ThermalExpansionCoefficient;
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static const Unit VolumetricThermalExpansionCoefficient;
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static const Unit SpecificHeat;
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static const Unit ThermalTransferCoefficient;
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static const Unit HeatFlux;
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static const Unit DynamicViscosity;
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static const Unit KinematicViscosity;
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static const Unit VacuumPermittivity;
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static const Unit VolumeFlowRate;
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static const Unit DissipationRate;
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static const Unit InverseLength;
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static const Unit InverseArea;
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static const Unit InverseVolume;
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//@}
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private:
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UnitSignature Sig;
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};
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inline Unit& Unit::operator*=(const Unit& that)
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{
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*this = *this * that;
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return *this;
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}
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inline Unit& Unit::operator/=(const Unit& that)
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{
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*this = *this / that;
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return *this;
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}
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} // namespace Base
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#endif // BASE_Unit_H
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