UnitConverter.hpp

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#pragma once
 
#include "AstGlobal.h"
#include "AstUtil/Unit.hpp"
 
AST_NAMESPACE_BEGIN
 
 
class UnitConverter
{
public:
    UnitConverter():fromUnit_(Unit()), toUnit_(Unit()), conversionFactor_(1.0){}
 
    UnitConverter(Unit fromUnit, Unit toUnit)
        : fromUnit_(fromUnit), toUnit_(toUnit), conversionFactor_(fromUnit.getScale() / toUnit.getScale()){}
 
    double convert(double value) const{return value * conversionFactor_;}
 
    Unit getFromUnit() const{return fromUnit_;}
    
    Unit getToUnit() const{return toUnit_;}
 
    void setFromUnit(Unit fromUnit){fromUnit_ = fromUnit; syncConversionFactor();}
    
    void setToUnit(Unit toUnit){toUnit_ = toUnit; syncConversionFactor();}
 
    double getConversionFactor() const{return conversionFactor_;}
 
protected:
    void syncConversionFactor(){conversionFactor_ = fromUnit_.getScale() / toUnit_.getScale();}
    
protected:
    Unit fromUnit_;                 
    Unit toUnit_;                   
    double conversionFactor_;       
};
 
AST_NAMESPACE_END