public static IfcNamedUnit GetUnitFor(this IfcUnitAssignment ua, IfcPropertySingleValue Property)
{
if (Property.Unit != null)
return (IfcNamedUnit)Property.Unit;
// nominal value can be of types with subtypes:
// IfcMeasureValue, IfcSimpleValue, IfcDerivedMeasureValue
IfcUnitEnum? requiredUnit = null;
// types from http://www.buildingsmart-tech.org/ifc/IFC2x3/TC1/html/ifcmeasureresource/lexical/ifcmeasurevalue.htm
if (Property.NominalValue is IfcVolumeMeasure)
requiredUnit = IfcUnitEnum.VOLUMEUNIT;
else if (Property.NominalValue is IfcAreaMeasure)
requiredUnit = IfcUnitEnum.AREAUNIT;
else if (Property.NominalValue is IfcLengthMeasure)
requiredUnit = IfcUnitEnum.LENGTHUNIT;
else if (Property.NominalValue is IfcPositiveLengthMeasure)
requiredUnit = IfcUnitEnum.LENGTHUNIT;
else if (Property.NominalValue is IfcAmountOfSubstanceMeasure)
requiredUnit = IfcUnitEnum.AMOUNTOFSUBSTANCEUNIT;
else if (Property.NominalValue is IfcContextDependentMeasure)
requiredUnit = null; // todo: not sure what to do here
else if (Property.NominalValue is IfcCountMeasure)
requiredUnit = null; // todo: not sure what to do here
else if (Property.NominalValue is IfcDescriptiveMeasure)
requiredUnit = null; // todo: not sure what to do here
else if (Property.NominalValue is IfcElectricCurrentMeasure)
requiredUnit = IfcUnitEnum.ELECTRICCURRENTUNIT;
else if (Property.NominalValue is IfcLuminousIntensityMeasure)
requiredUnit = IfcUnitEnum.LUMINOUSINTENSITYUNIT;
else if (Property.NominalValue is IfcMassMeasure)
requiredUnit = IfcUnitEnum.MASSUNIT;
else if (Property.NominalValue is IfcNormalisedRatioMeasure)
requiredUnit = null; // todo: not sure what to do here
else if (Property.NominalValue is IfcNumericMeasure)
requiredUnit = null; // todo: not sure what to do here.
else if (Property.NominalValue is IfcParameterValue)
requiredUnit = null; // todo: not sure what to do here.
else if (Property.NominalValue is IfcPlaneAngleMeasure)
requiredUnit = IfcUnitEnum.PLANEANGLEUNIT;
else if (Property.NominalValue is IfcPositiveRatioMeasure)
requiredUnit = null; // todo: not sure what to do here.
else if (Property.NominalValue is IfcPositivePlaneAngleMeasure)
requiredUnit = IfcUnitEnum.PLANEANGLEUNIT;
else if (Property.NominalValue is IfcRatioMeasure)
requiredUnit = null; // todo: not sure what to do here.
else if (Property.NominalValue is IfcSolidAngleMeasure)
requiredUnit = IfcUnitEnum.SOLIDANGLEUNIT;
else if (Property.NominalValue is IfcThermodynamicTemperatureMeasure)
requiredUnit = IfcUnitEnum.THERMODYNAMICTEMPERATUREUNIT;
else if (Property.NominalValue is IfcTimeMeasure)
requiredUnit = IfcUnitEnum.TIMEUNIT;
else if (Property.NominalValue is IfcComplexNumber)
requiredUnit = null; // todo: not sure what to do here.
// types from IfcSimpleValue
else if (Property.NominalValue is IfcSimpleValue)
requiredUnit = null;
// more measures types to be taken from http://www.buildingsmart-tech.org/ifc/IFC2x3/TC1/html/ifcmeasureresource/lexical/ifcderivedmeasurevalue.htm
if (requiredUnit == null)
return null;
IfcNamedUnit nu = ua.Units.OfType<IfcSIUnit>().FirstOrDefault(u => u.UnitType == (IfcUnitEnum)requiredUnit);
if (nu == null)
nu = ua.Units.OfType<IfcConversionBasedUnit>().FirstOrDefault(u => u.UnitType == (IfcUnitEnum)requiredUnit);
return nu;
}
/// <summary>
/// Get the IfcPropertySingleValue value with unit
/// </summary>
/// <param name="ifcPropertySingleValue">IfcPropertySingleValue</param>
/// <param name="ifcGlobalUnits">global unit dictionary</param>
/// <returns>string holding value</returns>
public static string FormatPropertyValue(IfcPropertySingleValue ifcPropertySingleValue, ConcurrentDictionary<string, string> ifcGlobalUnits)
{
bool moneyUnit = false;
string unit = GetUnitAbbreviation(ifcPropertySingleValue.Unit, ifcGlobalUnits);
if (ifcPropertySingleValue.Unit is IfcMonetaryUnit)
moneyUnit = true;
IfcValue ifcValue = ifcPropertySingleValue.NominalValue;
return FormatIfcValue(ifcValue, unit, moneyUnit);
}