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Implement the three major unit system schemas

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jriegel
2013-12-05 18:16:31 +01:00
parent 2df4f4ff7f
commit 69a4bbc46a
14 changed files with 220 additions and 51 deletions
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93
src/Base/UnitsSchemaImperial1.cpp
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@@ -34,25 +34,86 @@
using namespace Base;
//void UnitsSchemaImperial1::setSchemaUnits(void){
// // here you could change the constances used by the parser (defined in Quantity.cpp)
// Quantity::Inch = Quantity (25.4 ,Unit(1));
// Quantity::Foot = Quantity (304.8 ,Unit(1));
// Quantity::Thou = Quantity (0.0254 ,Unit(1));
// Quantity::Yard = Quantity (914.4 ,Unit(1));
// Quantity::Mile = Quantity (1609344.0 ,Unit(1));
//}
//
//void UnitsSchemaImperial1::resetSchemaUnits(void){
// // set units to US customary / Imperial units
// Quantity::Inch = Quantity (25.4 ,Unit(1));
// Quantity::Foot = Quantity (304.8 ,Unit(1));
// Quantity::Thou = Quantity (0.0254 ,Unit(1));
// Quantity::Yard = Quantity (914.4 ,Unit(1));
// Quantity::Mile = Quantity (1609344.0 ,Unit(1));
//}
QString UnitsSchemaImperial1::schemaTranslate(Base::Quantity quant,double &factor,QString &unitString)
{
double UnitValue = quant.getValue();
Unit unit = quant.getUnit();
// for imperial user/programmer mind; UnitValue is in internal system, that means
// mm/kg/s. And all combined units have to be calculated from there!
return QString::fromAscii("%1 %2").arg(UnitValue).arg(QString::fromAscii(unit.getString().c_str()));
// now do special treatment on all cases seams nececarry:
if(unit == Unit::Length){ // Length handling ============================
if(UnitValue < 0.00000254){// smaller then 0.001 thou -> inch and scientific notation
unitString = QString::fromLatin1("in");
factor = 25.4;
}else if(UnitValue < 2.54){ // smaller then 0.1 inch -> Thou (mil)
unitString = QString::fromLatin1("thou");
factor = 0.0254;
}else if(UnitValue < 304.8){
unitString = QString::fromLatin1("in");
factor = 25.4;
}else if(UnitValue < 914.4){
unitString = QString::fromLatin1("ft");
factor = 304.8;
}else if(UnitValue < 1609344.0){
unitString = QString::fromLatin1("yr");
factor = 914.4;
}else if(UnitValue < 1609344000.0 ){
unitString = QString::fromLatin1("mi");
factor = 1609344.0;
}else{ // bigger then 1000 mi -> scientific notation
unitString = QString::fromLatin1("in");
factor = 25.4;
}
}else if (unit == Unit::Area){
// TODO Cascade for the Areas
// default action for all cases without special treatment:
unitString = QString::fromLatin1("in^2");
factor = 645.16;
}else if (unit == Unit::Volume){
// TODO Cascade for the Volume
// default action for all cases without special treatment:
unitString = QString::fromLatin1("in^3");
factor = 16387.1;
}else if (unit == Unit::Mass){
// TODO Cascade for the wights
// default action for all cases without special treatment:
unitString = QString::fromLatin1("lb");
factor = 0.45359237;
}else if (unit == Unit::Pressure){
if(UnitValue < 145.038){// psi is the smallest
unitString = QString::fromLatin1("psi");
factor = 0.145038;
}else if(UnitValue < 145038){
unitString = QString::fromLatin1("ksi");
factor = 145.038;
}else{ // bigger then 1000 ksi -> psi + scientific notation
unitString = QString::fromLatin1("psi");
factor = 0.145038;
}
}else{
// default action for all cases without special treatment:
unitString = QString::fromLatin1(quant.getUnit().getString().c_str());
factor = 1.0;
}
return QString::fromLatin1("%1 %2").arg(UnitValue / factor).arg(unitString);
}
//
//Base::Quantity UnitsSchemaImperial1::schemaPrefUnit(const Base::Unit &unit,QString &outUnitString)
//{
// if(unit == Unit::Length){
// outUnitString = QString::fromAscii("\"");
// return Base::Quantity(1/25.40,Unit::Length);
// }else if(unit == Unit::Mass){
// outUnitString = QString::fromAscii("lb");
// return Base::Quantity(1/0.45359237,Unit::Length);
// }else{
// outUnitString = QString::fromAscii(unit.getString().c_str());
// return Base::Quantity(1,unit);
// }
//
//}