/// <summary>
/// Processes an IfcDerivedUnit.
/// </summary>
/// <param name="unitHnd">The unit handle.</param>
void ProcessIFCDerivedUnit(IFCAnyHandle unitHnd)
{
List <IFCAnyHandle> elements =
IFCAnyHandleUtil.GetAggregateInstanceAttribute <List <IFCAnyHandle> >(unitHnd, "Elements");
IList <KeyValuePair <IFCUnit, int> > derivedElementUnitHnds = new List <KeyValuePair <IFCUnit, int> >();
foreach (IFCAnyHandle subElement in elements)
{
IFCAnyHandle derivedElementUnitHnd = IFCImportHandleUtil.GetRequiredInstanceAttribute(subElement, "Unit", false);
IFCUnit subUnit = IFCAnyHandleUtil.IsNullOrHasNoValue(derivedElementUnitHnd) ? null : IFCUnit.ProcessIFCUnit(derivedElementUnitHnd);
if (subUnit != null)
{
bool found;
int exponent = IFCImportHandleUtil.GetRequiredIntegerAttribute(subElement, "Exponent", out found);
if (found)
{
derivedElementUnitHnds.Add(new KeyValuePair <IFCUnit, int>(subUnit, exponent));
}
}
}
// the DerivedUnitExpectedTypes object is a description of one possible set of base units for a particular derived unit.
// The IList allows for possible different interpretations. For example, Volumetric Flow Rate could be defined by m^3/s (length ^ 3 / time) or L/s (volume / time).
IList <DerivedUnitExpectedTypes> expectedTypesList = new List <DerivedUnitExpectedTypes>();
string unitType = IFCAnyHandleUtil.GetEnumerationAttribute(unitHnd, "UnitType");
if (string.Compare(unitType, "LINEARVELOCITYUNIT", true) == 0)
{
Spec = SpecTypeId.HvacVelocity;
UnitSystem = UnitSystem.Metric;
// Support only m / s.
DerivedUnitExpectedTypes expectedTypes = new DerivedUnitExpectedTypes(UnitTypeId.MetersPerSecond, SymbolTypeId.MPerS);
expectedTypes.AddExpectedType(1, SpecTypeId.Length);
expectedTypes.AddCustomExpectedType(-1, "TIMEUNIT");
expectedTypesList.Add(expectedTypes);
}
else if (string.Compare(unitType, "THERMALTRANSMITTANCEUNIT", true) == 0)
{
Spec = SpecTypeId.HeatTransferCoefficient;
UnitSystem = UnitSystem.Metric;
// Support W / (K * m^2) or kg / (K * s^3)
DerivedUnitExpectedTypes expectedTypesWinvKinvM2 = new DerivedUnitExpectedTypes(UnitTypeId.WattsPerSquareMeterKelvin, SymbolTypeId.WPerMSup2K);
expectedTypesWinvKinvM2.AddExpectedType(1, SpecTypeId.HvacPower); // UT_Electrical_Wattage is similar, but UT_HVAC_Power is the one we map to.
expectedTypesWinvKinvM2.AddExpectedType(-1, SpecTypeId.HvacTemperature);
expectedTypesWinvKinvM2.AddExpectedType(-2, SpecTypeId.Length);
expectedTypesList.Add(expectedTypesWinvKinvM2);
DerivedUnitExpectedTypes expectedTypesWinvKinvArea = new DerivedUnitExpectedTypes(UnitTypeId.WattsPerSquareMeterKelvin, SymbolTypeId.WPerMSup2K);
expectedTypesWinvKinvArea.AddExpectedType(1, SpecTypeId.HvacPower); // UT_Electrical_Wattage is similar, but UT_HVAC_Power is the one we map to.
expectedTypesWinvKinvArea.AddExpectedType(-1, SpecTypeId.HvacTemperature);
expectedTypesWinvKinvArea.AddExpectedType(-1, SpecTypeId.Area);
expectedTypesList.Add(expectedTypesWinvKinvArea);
DerivedUnitExpectedTypes expectedTypes = new DerivedUnitExpectedTypes(UnitTypeId.WattsPerSquareMeterKelvin, SymbolTypeId.WPerMSup2K);
expectedTypes.AddExpectedType(1, SpecTypeId.Mass);
expectedTypes.AddExpectedType(-1, SpecTypeId.HvacTemperature);
expectedTypes.AddCustomExpectedType(-3, "TIMEUNIT");
expectedTypesList.Add(expectedTypes);
}
else if (string.Compare(unitType, "VOLUMETRICFLOWRATEUNIT", true) == 0)
{
Spec = SpecTypeId.AirFlow;
UnitSystem = UnitSystem.Metric;
// Support L / s or m^3 / s in the IFC file.
// L / s
DerivedUnitExpectedTypes expectedTypesLPerS = new DerivedUnitExpectedTypes(UnitTypeId.LitersPerSecond, SymbolTypeId.LPerS);
expectedTypesLPerS.AddExpectedType(1, SpecTypeId.Volume);
expectedTypesLPerS.AddCustomExpectedType(-1, "TIMEUNIT");
expectedTypesList.Add(expectedTypesLPerS);
// m^3 / s.
DerivedUnitExpectedTypes expectedTypes = new DerivedUnitExpectedTypes(UnitTypeId.CubicMetersPerSecond, SymbolTypeId.MSup3PerS);
expectedTypes.AddExpectedType(3, SpecTypeId.Length);
expectedTypes.AddCustomExpectedType(-1, "TIMEUNIT");
expectedTypesList.Add(expectedTypes);
}
else if (string.Compare(unitType, "MASSDENSITYUNIT", true) == 0)
{
Spec = SpecTypeId.MassDensity;
UnitSystem = UnitSystem.Metric;
// Support kg / m^3 in the IFC file.
// kg / m^3.
DerivedUnitExpectedTypes expectedTypes = new DerivedUnitExpectedTypes(UnitTypeId.KilogramsPerCubicMeter, SymbolTypeId.KgPerMSup3);
expectedTypes.AddExpectedType(1, SpecTypeId.Mass);
expectedTypes.AddExpectedType(-3, SpecTypeId.Length);
expectedTypesList.Add(expectedTypes);
}
else if (string.Compare(unitType, "LINEARFORCEUNIT", true) == 0)
{
Spec = SpecTypeId.LinearForce;
UnitSystem = UnitSystem.Metric;
// Support N / m in the IFC file.
DerivedUnitExpectedTypes expectedTypes = new DerivedUnitExpectedTypes(UnitTypeId.NewtonsPerMeter, SymbolTypeId.NPerM);
expectedTypes.AddExpectedType(1, SpecTypeId.LinearForce);
expectedTypesList.Add(expectedTypes);
// Support N / m in basic units
DerivedUnitExpectedTypes expectedTypes2 = new DerivedUnitExpectedTypes(UnitTypeId.NewtonsPerMeter, SymbolTypeId.NPerM);
expectedTypes2.AddExpectedType(1, SpecTypeId.Mass);
expectedTypes2.AddExpectedType(1, SpecTypeId.Length);
expectedTypes2.AddCustomExpectedType(-2, "TIMEUNIT");
expectedTypes2.AddExpectedType(-1, SpecTypeId.Length);
expectedTypesList.Add(expectedTypes2);
}
else if (string.Compare(unitType, "PLANARFORCEUNIT", true) == 0)
{
Spec = SpecTypeId.AreaForce;
UnitSystem = UnitSystem.Metric;
// Support N / m^2 in the IFC file.
DerivedUnitExpectedTypes expectedTypes = new DerivedUnitExpectedTypes(UnitTypeId.NewtonsPerSquareMeter, SymbolTypeId.NPerMSup2);
expectedTypes.AddExpectedType(1, SpecTypeId.AreaForce);
expectedTypesList.Add(expectedTypes);
// Support N / m in basic units
DerivedUnitExpectedTypes expectedTypes2 = new DerivedUnitExpectedTypes(UnitTypeId.NewtonsPerSquareMeter, SymbolTypeId.NPerMSup2);
expectedTypes2.AddExpectedType(1, SpecTypeId.Mass);
expectedTypes2.AddExpectedType(1, SpecTypeId.Length);
expectedTypes2.AddCustomExpectedType(-2, "TIMEUNIT");
expectedTypes2.AddExpectedType(-2, SpecTypeId.Length);
expectedTypesList.Add(expectedTypes2);
}
else if (string.Compare(unitType, "USERDEFINED", true) == 0)
{
// Look at the sub-types to see what we support.
string userDefinedType = IFCImportHandleUtil.GetOptionalStringAttribute(unitHnd, "UserDefinedType", null);
if (!string.IsNullOrWhiteSpace(userDefinedType))
{
if (string.Compare(userDefinedType, "Luminous Efficacy", true) == 0)
{
Spec = SpecTypeId.Efficacy;
UnitSystem = UnitSystem.Metric;
// Support only lm / W.
DerivedUnitExpectedTypes expectedTypes = new DerivedUnitExpectedTypes(UnitTypeId.LumensPerWatt, SymbolTypeId.LmPerW);
expectedTypes.AddExpectedType(-1, SpecTypeId.Mass);
expectedTypes.AddExpectedType(-2, SpecTypeId.Length);
expectedTypes.AddCustomExpectedType(3, "TIMEUNIT");
expectedTypes.AddExpectedType(1, SpecTypeId.LuminousFlux);
expectedTypesList.Add(expectedTypes);
}
else if (string.Compare(userDefinedType, "Friction Loss", true) == 0)
{
Spec = SpecTypeId.HvacFriction;
UnitSystem = UnitSystem.Metric;
// Support only Pa / m.
DerivedUnitExpectedTypes expectedTypes = new DerivedUnitExpectedTypes(UnitTypeId.PascalsPerMeter, SymbolTypeId.PaPerM);
expectedTypes.AddExpectedType(-2, SpecTypeId.Length);
expectedTypes.AddExpectedType(1, SpecTypeId.Mass);
expectedTypes.AddCustomExpectedType(-2, "TIMEUNIT");
expectedTypesList.Add(expectedTypes);
}
}
}
foreach (DerivedUnitExpectedTypes derivedUnitExpectedTypes in expectedTypesList)
{
double scaleFactor = 1.0;
if (derivedUnitExpectedTypes.Matches(derivedElementUnitHnds, out scaleFactor))
{
// Found a match.
Unit = derivedUnitExpectedTypes.Unit;
Symbol = derivedUnitExpectedTypes.Symbol;
ScaleFactor = scaleFactor;
return;
}
}
Importer.TheLog.LogUnhandledUnitTypeError(unitHnd, unitType);
}
/// <summary>
/// Processes an IfcDerivedUnit.
/// </summary>
/// <param name="unitHnd">The unit handle.</param>
void ProcessIFCDerivedUnit(IFCAnyHandle unitHnd)
{
List <IFCAnyHandle> elements =
IFCAnyHandleUtil.GetAggregateInstanceAttribute <List <IFCAnyHandle> >(unitHnd, "Elements");
IList <KeyValuePair <IFCUnit, int> > derivedElementUnitHnds = new List <KeyValuePair <IFCUnit, int> >();
foreach (IFCAnyHandle subElement in elements)
{
IFCAnyHandle derivedElementUnitHnd = IFCImportHandleUtil.GetRequiredInstanceAttribute(subElement, "Unit", false);
IFCUnit subUnit = IFCAnyHandleUtil.IsNullOrHasNoValue(derivedElementUnitHnd) ? null : IFCUnit.ProcessIFCUnit(derivedElementUnitHnd);
if (subUnit != null)
{
bool found;
int exponent = IFCImportHandleUtil.GetRequiredIntegerAttribute(subElement, "Exponent", out found);
if (found)
{
derivedElementUnitHnds.Add(new KeyValuePair <IFCUnit, int>(subUnit, exponent));
}
}
}
// the DerivedUnitExpectedTypes object is a description of one possible set of base units for a particular derived unit.
// The IList allows for possible different interpretations. For example, Volumetric Flow Rate could be defined by m^3/s (length ^ 3 / time) or L/s (volume / time).
IList <DerivedUnitExpectedTypes> expectedTypesList = new List <DerivedUnitExpectedTypes>();
string unitType = IFCAnyHandleUtil.GetEnumerationAttribute(unitHnd, "UnitType");
if (string.Compare(unitType, "LINEARVELOCITYUNIT", true) == 0)
{
UnitType = UnitType.UT_HVAC_Velocity;
UnitSystem = UnitSystem.Metric;
// Support only m / s.
DerivedUnitExpectedTypes expectedTypes = new DerivedUnitExpectedTypes(UnitName.DUT_METERS_PER_SECOND, UnitSymbolType.UST_M_PER_S);
expectedTypes.AddExpectedType(1, UnitType.UT_Length);
expectedTypes.AddCustomExpectedType(-1, "TIMEUNIT");
expectedTypesList.Add(expectedTypes);
}
else if (string.Compare(unitType, "THERMALTRANSMITTANCEUNIT", true) == 0)
{
UnitType = UnitType.UT_HVAC_CoefficientOfHeatTransfer;
UnitSystem = UnitSystem.Metric;
// Support W / (K * m^2) or kg / (K * s^3)
DerivedUnitExpectedTypes expectedTypesWinvKinvM2 = new DerivedUnitExpectedTypes(UnitName.DUT_WATTS_PER_SQUARE_METER_KELVIN, UnitSymbolType.UST_WATT_PER_SQ_M_K);
expectedTypesWinvKinvM2.AddExpectedType(1, UnitType.UT_HVAC_Power); // UT_Electrical_Wattage is similar, but UT_HVAC_Power is the one we map to.
expectedTypesWinvKinvM2.AddExpectedType(-1, UnitType.UT_HVAC_Temperature);
expectedTypesWinvKinvM2.AddExpectedType(-2, UnitType.UT_Length);
expectedTypesList.Add(expectedTypesWinvKinvM2);
DerivedUnitExpectedTypes expectedTypesWinvKinvArea = new DerivedUnitExpectedTypes(UnitName.DUT_WATTS_PER_SQUARE_METER_KELVIN, UnitSymbolType.UST_WATT_PER_SQ_M_K);
expectedTypesWinvKinvArea.AddExpectedType(1, UnitType.UT_HVAC_Power); // UT_Electrical_Wattage is similar, but UT_HVAC_Power is the one we map to.
expectedTypesWinvKinvArea.AddExpectedType(-1, UnitType.UT_HVAC_Temperature);
expectedTypesWinvKinvArea.AddExpectedType(-1, UnitType.UT_Area);
expectedTypesList.Add(expectedTypesWinvKinvArea);
DerivedUnitExpectedTypes expectedTypes = new DerivedUnitExpectedTypes(UnitName.DUT_WATTS_PER_SQUARE_METER_KELVIN, UnitSymbolType.UST_WATT_PER_SQ_M_K);
expectedTypes.AddExpectedType(1, UnitType.UT_Mass);
expectedTypes.AddExpectedType(-1, UnitType.UT_HVAC_Temperature);
expectedTypes.AddCustomExpectedType(-3, "TIMEUNIT");
expectedTypesList.Add(expectedTypes);
}
else if (string.Compare(unitType, "VOLUMETRICFLOWRATEUNIT", true) == 0)
{
UnitType = UnitType.UT_HVAC_Airflow;
UnitSystem = UnitSystem.Metric;
// Support L / s or m^3 / s in the IFC file.
// L / s
DerivedUnitExpectedTypes expectedTypesLPerS = new DerivedUnitExpectedTypes(UnitName.DUT_LITERS_PER_SECOND, UnitSymbolType.UST_L_PER_S);
expectedTypesLPerS.AddExpectedType(1, UnitType.UT_Volume);
expectedTypesLPerS.AddCustomExpectedType(-1, "TIMEUNIT");
expectedTypesList.Add(expectedTypesLPerS);
// m^3 / s.
DerivedUnitExpectedTypes expectedTypes = new DerivedUnitExpectedTypes(UnitName.DUT_CUBIC_METERS_PER_SECOND, UnitSymbolType.UST_CU_M_PER_S);
expectedTypes.AddExpectedType(3, UnitType.UT_Length);
expectedTypes.AddCustomExpectedType(-1, "TIMEUNIT");
expectedTypesList.Add(expectedTypes);
}
else if (string.Compare(unitType, "MASSDENSITYUNIT", true) == 0)
{
UnitType = UnitType.UT_MassDensity;
UnitSystem = UnitSystem.Metric;
// Support kg / m^3 in the IFC file.
// kg / m^3.
DerivedUnitExpectedTypes expectedTypes = new DerivedUnitExpectedTypes(UnitName.DUT_KILOGRAMS_PER_CUBIC_METER, UnitSymbolType.UST_KG_PER_CU_M);
expectedTypes.AddExpectedType(1, UnitType.UT_Mass);
expectedTypes.AddExpectedType(-3, UnitType.UT_Length);
expectedTypesList.Add(expectedTypes);
}
else if (string.Compare(unitType, "USERDEFINED", true) == 0)
{
// Look at the sub-types to see what we support.
string userDefinedType = IFCImportHandleUtil.GetOptionalStringAttribute(unitHnd, "UserDefinedType", null);
if (!string.IsNullOrWhiteSpace(userDefinedType))
{
if (string.Compare(userDefinedType, "Luminous Efficacy", true) == 0)
{
UnitType = UnitType.UT_Electrical_Efficacy;
UnitSystem = UnitSystem.Metric;
// Support only lm / W.
DerivedUnitExpectedTypes expectedTypes = new DerivedUnitExpectedTypes(UnitName.DUT_LUMENS_PER_WATT, UnitSymbolType.UST_LM_PER_W);
expectedTypes.AddExpectedType(-1, UnitType.UT_Mass);
expectedTypes.AddExpectedType(-2, UnitType.UT_Length);
expectedTypes.AddCustomExpectedType(3, "TIMEUNIT");
expectedTypes.AddExpectedType(1, UnitType.UT_Electrical_Luminous_Flux);
expectedTypesList.Add(expectedTypes);
}
else if (string.Compare(userDefinedType, "Friction Loss", true) == 0)
{
UnitType = UnitType.UT_HVAC_Friction;
UnitSystem = UnitSystem.Metric;
// Support only Pa / m.
DerivedUnitExpectedTypes expectedTypes = new DerivedUnitExpectedTypes(UnitName.DUT_PASCALS_PER_METER, UnitSymbolType.UST_PASCAL_PER_M);
expectedTypes.AddExpectedType(-2, UnitType.UT_Length);
expectedTypes.AddExpectedType(1, UnitType.UT_Mass);
expectedTypes.AddCustomExpectedType(-2, "TIMEUNIT");
expectedTypesList.Add(expectedTypes);
}
}
}
foreach (DerivedUnitExpectedTypes derivedUnitExpectedTypes in expectedTypesList)
{
double scaleFactor = 1.0;
if (derivedUnitExpectedTypes.Matches(derivedElementUnitHnds, out scaleFactor))
{
// Found a match.
UnitName = derivedUnitExpectedTypes.UnitName;
UnitSymbol = derivedUnitExpectedTypes.UnitSymbol;
ScaleFactor = scaleFactor;
return;
}
}
Importer.TheLog.LogUnhandledUnitTypeError(unitHnd, unitType);
}
/// <summary>
/// Processes an IfcDerivedUnit.
/// </summary>
/// <param name="unitHnd">The unit handle.</param>
void ProcessIFCDerivedUnit(IFCAnyHandle unitHnd)
{
List<IFCAnyHandle> elements =
IFCAnyHandleUtil.GetAggregateInstanceAttribute<List<IFCAnyHandle>>(unitHnd, "Elements");
IList<KeyValuePair<IFCUnit, int>> derivedElementUnitHnds = new List<KeyValuePair<IFCUnit, int>>();
foreach (IFCAnyHandle subElement in elements)
{
IFCAnyHandle derivedElementUnitHnd = IFCImportHandleUtil.GetRequiredInstanceAttribute(subElement, "Unit", false);
IFCUnit subUnit = IFCAnyHandleUtil.IsNullOrHasNoValue(derivedElementUnitHnd) ? null : IFCUnit.ProcessIFCUnit(derivedElementUnitHnd);
if (subUnit != null)
{
bool found;
int exponent = IFCImportHandleUtil.GetRequiredIntegerAttribute(subElement, "Exponent", out found);
if (found)
derivedElementUnitHnds.Add(new KeyValuePair<IFCUnit, int>(subUnit, exponent));
}
}
// the DerivedUnitExpectedTypes object is a description of one possible set of base units for a particular derived unit.
// The IList allows for possible different interpretations. For example, Volumetric Flow Rate could be defined by m^3/s (length ^ 3 / time) or L/s (volume / time).
IList<DerivedUnitExpectedTypes> expectedTypesList = new List<DerivedUnitExpectedTypes>();
string unitType = IFCAnyHandleUtil.GetEnumerationAttribute(unitHnd, "UnitType");
if (string.Compare(unitType, "LINEARVELOCITYUNIT", true) == 0)
{
UnitType = UnitType.UT_HVAC_Velocity;
UnitSystem = UnitSystem.Metric;
// Support only m / s.
DerivedUnitExpectedTypes expectedTypes = new DerivedUnitExpectedTypes(UnitName.DUT_METERS_PER_SECOND, UnitSymbolType.UST_M_PER_S);
expectedTypes.AddExpectedType(1, UnitType.UT_Length);
expectedTypes.AddCustomExpectedType(-1, "TIMEUNIT");
expectedTypesList.Add(expectedTypes);
}
else if (string.Compare(unitType, "THERMALTRANSMITTANCEUNIT", true) == 0)
{
UnitType = UnitType.UT_HVAC_CoefficientOfHeatTransfer;
UnitSystem = UnitSystem.Metric;
// Support W / (K * m^2) or kg / (K * s^3)
DerivedUnitExpectedTypes expectedTypesWinvKinvM2 = new DerivedUnitExpectedTypes(UnitName.DUT_WATTS_PER_SQUARE_METER_KELVIN, UnitSymbolType.UST_WATT_PER_SQ_M_K);
expectedTypesWinvKinvM2.AddExpectedType(1, UnitType.UT_HVAC_Power); // UT_Electrical_Wattage is similar, but UT_HVAC_Power is the one we map to.
expectedTypesWinvKinvM2.AddExpectedType(-1, UnitType.UT_HVAC_Temperature);
expectedTypesWinvKinvM2.AddExpectedType(-2, UnitType.UT_Length);
expectedTypesList.Add(expectedTypesWinvKinvM2);
DerivedUnitExpectedTypes expectedTypesWinvKinvArea = new DerivedUnitExpectedTypes(UnitName.DUT_WATTS_PER_SQUARE_METER_KELVIN, UnitSymbolType.UST_WATT_PER_SQ_M_K);
expectedTypesWinvKinvArea.AddExpectedType(1, UnitType.UT_HVAC_Power); // UT_Electrical_Wattage is similar, but UT_HVAC_Power is the one we map to.
expectedTypesWinvKinvArea.AddExpectedType(-1, UnitType.UT_HVAC_Temperature);
expectedTypesWinvKinvArea.AddExpectedType(-1, UnitType.UT_Area);
expectedTypesList.Add(expectedTypesWinvKinvArea);
DerivedUnitExpectedTypes expectedTypes = new DerivedUnitExpectedTypes(UnitName.DUT_WATTS_PER_SQUARE_METER_KELVIN, UnitSymbolType.UST_WATT_PER_SQ_M_K);
expectedTypes.AddExpectedType(1, UnitType.UT_Mass);
expectedTypes.AddExpectedType(-1, UnitType.UT_HVAC_Temperature);
expectedTypes.AddCustomExpectedType(-3, "TIMEUNIT");
expectedTypesList.Add(expectedTypes);
}
else if (string.Compare(unitType, "VOLUMETRICFLOWRATEUNIT", true) == 0)
{
UnitType = UnitType.UT_HVAC_Airflow;
UnitSystem = UnitSystem.Metric;
// Support L / s or m^3 / s in the IFC file.
// L / s
DerivedUnitExpectedTypes expectedTypesLPerS = new DerivedUnitExpectedTypes(UnitName.DUT_LITERS_PER_SECOND, UnitSymbolType.UST_L_PER_S);
expectedTypesLPerS.AddExpectedType(1, UnitType.UT_Volume);
expectedTypesLPerS.AddCustomExpectedType(-1, "TIMEUNIT");
expectedTypesList.Add(expectedTypesLPerS);
// m^3 / s.
DerivedUnitExpectedTypes expectedTypes = new DerivedUnitExpectedTypes(UnitName.DUT_CUBIC_METERS_PER_SECOND, UnitSymbolType.UST_CU_M_PER_S);
expectedTypes.AddExpectedType(3, UnitType.UT_Length);
expectedTypes.AddCustomExpectedType(-1, "TIMEUNIT");
expectedTypesList.Add(expectedTypes);
}
else if (string.Compare(unitType, "USERDEFINED", true) == 0)
{
// Look at the sub-types to see what we support.
string userDefinedType = IFCImportHandleUtil.GetOptionalStringAttribute(unitHnd, "UserDefinedType", null);
if (!string.IsNullOrWhiteSpace(userDefinedType))
{
if (string.Compare(userDefinedType, "Luminous Efficacy", true) == 0)
{
UnitType = UnitType.UT_Electrical_Efficacy;
UnitSystem = UnitSystem.Metric;
// Support only lm / W.
DerivedUnitExpectedTypes expectedTypes = new DerivedUnitExpectedTypes(UnitName.DUT_LUMENS_PER_WATT, UnitSymbolType.UST_LM_PER_W);
expectedTypes.AddExpectedType(-1, UnitType.UT_Mass);
expectedTypes.AddExpectedType(-2, UnitType.UT_Length);
expectedTypes.AddCustomExpectedType(3, "TIMEUNIT");
expectedTypes.AddExpectedType(1, UnitType.UT_Electrical_Luminous_Flux);
expectedTypesList.Add(expectedTypes);
}
else if (string.Compare(userDefinedType, "Friction Loss", true) == 0)
{
UnitType = UnitType.UT_HVAC_Friction;
UnitSystem = UnitSystem.Metric;
// Support only Pa / m.
DerivedUnitExpectedTypes expectedTypes = new DerivedUnitExpectedTypes(UnitName.DUT_PASCALS_PER_METER, UnitSymbolType.UST_PASCAL_PER_M);
expectedTypes.AddExpectedType(-2, UnitType.UT_Length);
expectedTypes.AddExpectedType(1, UnitType.UT_Mass);
expectedTypes.AddCustomExpectedType(-2, "TIMEUNIT");
expectedTypesList.Add(expectedTypes);
}
}
}
foreach (DerivedUnitExpectedTypes derivedUnitExpectedTypes in expectedTypesList)
{
double scaleFactor = 1.0;
if (derivedUnitExpectedTypes.Matches(derivedElementUnitHnds, out scaleFactor))
{
// Found a match.
UnitName = derivedUnitExpectedTypes.UnitName;
UnitSymbol = derivedUnitExpectedTypes.UnitSymbol;
ScaleFactor = scaleFactor;
return;
}
}
Importer.TheLog.LogUnhandledUnitTypeError(unitHnd, unitType);
}
