/// <summary>
/// Gets the unit of a type.
/// </summary>
/// <param name="specTypeId">Identifier of the spec.</param>
/// <returns>The Unit object.</returns>
public IFCUnit GetIFCProjectUnit(ForgeTypeId specTypeId)
{
IFCUnit projectUnit = null;
if (m_ProjectUnitsDictionary.TryGetValue(specTypeId, out projectUnit))
{
return(projectUnit);
}
else
{
//default units
if (specTypeId.Equals(SpecTypeId.Length))
{
IFCUnit unit = IFCUnit.ProcessIFCDefaultUnit(specTypeId, UnitSystem.Metric, UnitTypeId.Meters, 1.0 / 0.3048);
m_ProjectUnitsDictionary[specTypeId] = unit;
return(unit);
}
else if (specTypeId.Equals(SpecTypeId.Area))
{
IFCUnit projectLengthUnit = GetIFCProjectUnit(SpecTypeId.Length);
UnitSystem unitSystem = projectLengthUnit.UnitSystem;
ForgeTypeId unitName = unitSystem == UnitSystem.Metric ?
UnitTypeId.SquareMeters : UnitTypeId.SquareFeet;
double scaleFactor = unitSystem == UnitSystem.Metric ?
(1.0 / 0.3048) * (1.0 / 0.3048) : 1.0;
IFCUnit unit = IFCUnit.ProcessIFCDefaultUnit(specTypeId, unitSystem, unitName, scaleFactor);
m_ProjectUnitsDictionary[specTypeId] = unit;
return(unit);
}
else if (specTypeId.Equals(SpecTypeId.Volume))
{
IFCUnit projectLengthUnit = GetIFCProjectUnit(SpecTypeId.Length);
UnitSystem unitSystem = projectLengthUnit.UnitSystem;
ForgeTypeId unitName = unitSystem == UnitSystem.Metric ?
UnitTypeId.CubicMeters : UnitTypeId.CubicFeet;
double scaleFactor = unitSystem == UnitSystem.Metric ?
(1.0 / 0.3048) * (1.0 / 0.3048) * (1.0 / 0.3048) : 1.0;
IFCUnit unit = IFCUnit.ProcessIFCDefaultUnit(specTypeId, unitSystem, unitName, scaleFactor);
m_ProjectUnitsDictionary[specTypeId] = unit;
return(unit);
}
else if (specTypeId.Equals(SpecTypeId.Angle))
{
IFCUnit unit = IFCUnit.ProcessIFCDefaultUnit(specTypeId, UnitSystem.Metric, UnitTypeId.Degrees, Math.PI / 180);
m_ProjectUnitsDictionary[specTypeId] = unit;
return(unit);
}
else if (specTypeId.Equals(SpecTypeId.HvacTemperature))
{
IFCUnit unit = IFCUnit.ProcessIFCDefaultUnit(specTypeId, UnitSystem.Metric, UnitTypeId.Kelvin, 1.0);
m_ProjectUnitsDictionary[specTypeId] = unit;
return(unit);
}
}
return(null);
}
private double GetScaleFactorForUnitType(string prefix, ForgeTypeId specTypeId)
{
double scaleFactor = m_sPrefixToScaleFactor[prefix];
const double lengthFactor = (1.0 / 0.3048);
const double areaFactor = lengthFactor * lengthFactor;
const double volumeFactor = areaFactor * lengthFactor;
// length ^ -2
if (specTypeId.Equals(SpecTypeId.Illuminance))
{
return((scaleFactor * scaleFactor) / areaFactor);
}
// length ^ -1
if (specTypeId.Equals(SpecTypeId.HvacPressure))
{
return(scaleFactor / lengthFactor);
}
// length
if (specTypeId.Equals(SpecTypeId.Force) ||
specTypeId.Equals(SpecTypeId.Length))
{
return(scaleFactor * lengthFactor);
}
// length ^ 2
if (specTypeId.Equals(SpecTypeId.Area) ||
specTypeId.Equals(SpecTypeId.ElectricalPotential) ||
specTypeId.Equals(SpecTypeId.HvacPower))
{
return((scaleFactor * scaleFactor) * areaFactor);
}
// length ^ 3
if (specTypeId.Equals(SpecTypeId.Volume))
{
return((scaleFactor * scaleFactor * scaleFactor) * volumeFactor);
}
if (specTypeId.Equals(SpecTypeId.Mass))
{
return(scaleFactor / 1000.0); // Standard internal scale is kg.
}
return(scaleFactor);
}
private IDictionary <string, KeyValuePair <ForgeTypeId, ForgeTypeId> > GetSupportedDisplayTypes(ForgeTypeId specTypeId)
{
if (m_sSupportedMetricUnitTypes == null)
{
m_sSupportedMetricUnitTypes = new Dictionary <ForgeTypeId, IDictionary <string, KeyValuePair <ForgeTypeId, ForgeTypeId> > >();
}
IDictionary <string, KeyValuePair <ForgeTypeId, ForgeTypeId> > supportedTypes = null;
if (!m_sSupportedMetricUnitTypes.TryGetValue(specTypeId, out supportedTypes))
{
supportedTypes = new Dictionary <string, KeyValuePair <ForgeTypeId, ForgeTypeId> >();
if (specTypeId.Equals(SpecTypeId.Area))
{
supportedTypes[""] = new KeyValuePair <ForgeTypeId, ForgeTypeId>(UnitTypeId.SquareMeters, SymbolTypeId.MSup2);
supportedTypes["CENTI"] = new KeyValuePair <ForgeTypeId, ForgeTypeId>(UnitTypeId.SquareCentimeters, SymbolTypeId.CmSup2);
supportedTypes["MILLI"] = new KeyValuePair <ForgeTypeId, ForgeTypeId>(UnitTypeId.SquareMillimeters, SymbolTypeId.MmSup2);
}
else if (specTypeId.Equals(SpecTypeId.Current))
{
supportedTypes[""] = new KeyValuePair <ForgeTypeId, ForgeTypeId>(UnitTypeId.Amperes, SymbolTypeId.Ampere);
supportedTypes["KILO"] = new KeyValuePair <ForgeTypeId, ForgeTypeId>(UnitTypeId.Kiloamperes, SymbolTypeId.KA);
supportedTypes["MILLI"] = new KeyValuePair <ForgeTypeId, ForgeTypeId>(UnitTypeId.Milliamperes, SymbolTypeId.MA);
}
else if (specTypeId.Equals(SpecTypeId.ElectricalFrequency))
{
supportedTypes[""] = new KeyValuePair <ForgeTypeId, ForgeTypeId>(UnitTypeId.Hertz, SymbolTypeId.Hz);
}
else if (specTypeId.Equals(SpecTypeId.Illuminance))
{
supportedTypes[""] = new KeyValuePair <ForgeTypeId, ForgeTypeId>(UnitTypeId.Lux, SymbolTypeId.Lx);
}
else if (specTypeId.Equals(SpecTypeId.LuminousFlux))
{
supportedTypes[""] = new KeyValuePair <ForgeTypeId, ForgeTypeId>(UnitTypeId.Lumens, SymbolTypeId.Lm);
}
else if (specTypeId.Equals(SpecTypeId.LuminousIntensity))
{
supportedTypes[""] = new KeyValuePair <ForgeTypeId, ForgeTypeId>(UnitTypeId.Candelas, SymbolTypeId.Cd);
}
else if (specTypeId.Equals(SpecTypeId.ElectricalPotential))
{
supportedTypes[""] = new KeyValuePair <ForgeTypeId, ForgeTypeId>(UnitTypeId.Volts, SymbolTypeId.Volt);
supportedTypes["KILO"] = new KeyValuePair <ForgeTypeId, ForgeTypeId>(UnitTypeId.Kilovolts, SymbolTypeId.KV);
supportedTypes["MILLI"] = new KeyValuePair <ForgeTypeId, ForgeTypeId>(UnitTypeId.Millivolts, SymbolTypeId.MV);
}
else if (specTypeId.Equals(SpecTypeId.Force))
{
supportedTypes[""] = new KeyValuePair <ForgeTypeId, ForgeTypeId>(UnitTypeId.Newtons, SymbolTypeId.Newton); // Even if unit is grams, display kg.
supportedTypes["KILO"] = new KeyValuePair <ForgeTypeId, ForgeTypeId>(UnitTypeId.Kilonewtons, SymbolTypeId.KN);
}
else if (specTypeId.Equals(SpecTypeId.HvacPower))
{
supportedTypes[""] = new KeyValuePair <ForgeTypeId, ForgeTypeId>(UnitTypeId.Watts, SymbolTypeId.Watt);
}
else if (specTypeId.Equals(SpecTypeId.HvacPressure))
{
supportedTypes[""] = new KeyValuePair <ForgeTypeId, ForgeTypeId>(UnitTypeId.Pascals, SymbolTypeId.Pa);
supportedTypes["KILO"] = new KeyValuePair <ForgeTypeId, ForgeTypeId>(UnitTypeId.Kilopascals, SymbolTypeId.KPa);
supportedTypes["MEGA"] = new KeyValuePair <ForgeTypeId, ForgeTypeId>(UnitTypeId.Megapascals, SymbolTypeId.MPa);
}
else if (specTypeId.Equals(SpecTypeId.Length))
{
supportedTypes[""] = new KeyValuePair <ForgeTypeId, ForgeTypeId>(UnitTypeId.Meters, SymbolTypeId.Meter);
supportedTypes["CENTI"] = new KeyValuePair <ForgeTypeId, ForgeTypeId>(UnitTypeId.Centimeters, SymbolTypeId.Cm);
supportedTypes["MILLI"] = new KeyValuePair <ForgeTypeId, ForgeTypeId>(UnitTypeId.Millimeters, SymbolTypeId.Mm);
}
else if (specTypeId.Equals(SpecTypeId.Mass))
{
supportedTypes[""] = new KeyValuePair <ForgeTypeId, ForgeTypeId>(UnitTypeId.Kilograms, SymbolTypeId.Kg); // Even if unit is grams, display kg.
supportedTypes["KILO"] = new KeyValuePair <ForgeTypeId, ForgeTypeId>(UnitTypeId.Kilograms, SymbolTypeId.Kg);
}
else if (specTypeId.Equals(SpecTypeId.MassDensity))
{
supportedTypes[""] = new KeyValuePair <ForgeTypeId, ForgeTypeId>(UnitTypeId.KilogramsPerCubicMeter, SymbolTypeId.KgPerMSup3); // Even if unit is grams, display kg.
supportedTypes["KILO"] = new KeyValuePair <ForgeTypeId, ForgeTypeId>(UnitTypeId.KilogramsPerCubicMeter, SymbolTypeId.KgPerMSup3);
}
else if (specTypeId.Equals(SpecTypeId.Volume))
{
supportedTypes[""] = new KeyValuePair <ForgeTypeId, ForgeTypeId>(UnitTypeId.CubicMeters, SymbolTypeId.MSup3);
supportedTypes["DECI"] = new KeyValuePair <ForgeTypeId, ForgeTypeId>(UnitTypeId.Liters, SymbolTypeId.Liter);
supportedTypes["CENTI"] = new KeyValuePair <ForgeTypeId, ForgeTypeId>(UnitTypeId.CubicCentimeters, SymbolTypeId.CmSup3);
supportedTypes["MILLI"] = new KeyValuePair <ForgeTypeId, ForgeTypeId>(UnitTypeId.CubicMillimeters, SymbolTypeId.MmSup3);
}
m_sSupportedMetricUnitTypes[specTypeId] = supportedTypes;
}
return(supportedTypes);
}
