/// <summary>
/// Get Symbol string for IfcConversionBasedUnit conversion unit
/// </summary>
/// <returns>String holding symbol</returns>
public static string GetSymbol(this IfcConversionBasedUnit ifcConversionBasedUnit)
{
string name = ifcConversionBasedUnit.Name;
if ((ifcConversionBasedUnit.UnitType == IfcUnitEnum.LENGTHUNIT) ||
(ifcConversionBasedUnit.UnitType == IfcUnitEnum.AREAUNIT) ||
(ifcConversionBasedUnit.UnitType == IfcUnitEnum.VOLUMEUNIT)
)
{
string pow = string.Empty;
if (ifcConversionBasedUnit.Dimensions.LengthExponent == 2) //area
{
pow += '\u00B2'; //try unicode ((char)0x00B2)add ²
}
if (ifcConversionBasedUnit.Dimensions.LengthExponent == 3) //volume
{
pow += '\u00B3'; //((char)0x00B3)add ³
}
if ((name.Contains("FEET")) || (name.Contains("FOOT")))
{
return("ft" + pow);
}
if (name.Contains("INCH"))
{
return("in" + pow);
}
return(name + pow);
}
else
{
return(name);
}
}
public void Reset()
{
Contacts.Clear();
_ifcConversionBasedUnitYear = null;
_ifcConversionBasedUnitMonth = null;
_ifcConversionBasedUnitWeek = null;
_secondUnit = null;
_dimensionalExponents = null;
WorkBook = null;
}
private static void SetConversionUnitsParameters(IModel model, IfcConversionBasedUnit unit, IfcLabel name,
IfcRatioMeasure ratio, IfcUnitEnum unitType, IfcSIUnitName siUnitName,
IfcSIPrefix?siUnitPrefix, IfcDimensionalExponents dimensions)
{
unit.Name = name;
unit.ConversionFactor = model.Instances.New <IfcMeasureWithUnit>();
unit.ConversionFactor.ValueComponent = ratio;
unit.ConversionFactor.UnitComponent = model.Instances.New <IfcSIUnit>(s =>
{
s.UnitType = unitType;
s.Name = siUnitName;
s.Prefix = siUnitPrefix;
});
unit.Dimensions = dimensions;
}
/// <summary>
/// Set the week duration unit
/// </summary>
private void SetMinuteDurationUnit()
{
SetSecondUnit();
IfcMeasureWithUnit minuteMeasure = Model.Instances.New <IfcMeasureWithUnit>(mwu =>
{
mwu.ValueComponent = new IfcReal(60); //not accurate week but take average
mwu.UnitComponent = _secondUnit;
});
IfcConversionBasedUnit minuteConBaseUnit = Model.Instances.New <IfcConversionBasedUnit>(s =>
{
s.UnitType = IfcUnitEnum.TIMEUNIT;
s.Name = "Minute";
s.Dimensions = _dimensionalExponents;
s.ConversionFactor = minuteMeasure;
});
//set context units
_ifcConversionBasedUnitMinute = minuteConBaseUnit;
}
/// <summary>
/// Set the Year Duration Unit
/// </summary>
private void SetYearDurationUnit()
{
SetSecondUnit();
IfcMeasureWithUnit yearMeasure = Model.Instances.New <IfcMeasureWithUnit>(mwu =>
{
mwu.ValueComponent = new IfcReal(3.1536E7);
mwu.UnitComponent = _secondUnit;
});
IfcConversionBasedUnit yearConBaseUnit = Model.Instances.New <IfcConversionBasedUnit>(s =>
{
s.UnitType = IfcUnitEnum.TIMEUNIT;
s.Name = "Year";
s.Dimensions = _dimensionalExponents;
s.ConversionFactor = yearMeasure;
});
//set context units
_ifcConversionBasedUnitYear = yearConBaseUnit;
}
public static double GetPower(this IfcUnitAssignment ua, IfcUnitEnum unitType)
{
IfcSIUnit si = ua.Units.OfType <IfcSIUnit>().FirstOrDefault(u => u.UnitType == unitType);
if (si != null && si.Prefix.HasValue)
{
return(si.Power());
}
else
{
IfcConversionBasedUnit cu =
ua.Units.OfType <IfcConversionBasedUnit>().FirstOrDefault(u => u.UnitType == unitType);
if (cu != null)
{
IfcMeasureWithUnit mu = cu.ConversionFactor;
IfcSIUnit uc = mu.UnitComponent as IfcSIUnit;
//some BIM tools such as StruCAD write the conversion value out as a Length Measure
if (uc != null)
{
ExpressType et = ((ExpressType)mu.ValueComponent);
double cFactor = 1.0;
if (et.UnderlyingSystemType == typeof(double))
{
cFactor = (double)et.Value;
}
else if (et.UnderlyingSystemType == typeof(int))
{
cFactor = (double)((int)et.Value);
}
else if (et.UnderlyingSystemType == typeof(long))
{
cFactor = (double)((long)et.Value);
}
return(uc.Power() * cFactor);
}
}
}
return(1.0);
}
public static string GetLengthUnitName(this IfcUnitAssignment ua)
{
IfcSIUnit si = ua.Units.OfType <IfcSIUnit>().FirstOrDefault(u => u.UnitType == IfcUnitEnum.LENGTHUNIT);
if (si != null)
{
if (si.Prefix.HasValue)
{
return(string.Format("{0}{1}", si.Prefix.Value.ToString(), si.Name.ToString()));
}
else
{
return(si.Name.ToString());
}
}
else
{
IfcConversionBasedUnit cu =
ua.Units.OfType <IfcConversionBasedUnit>().FirstOrDefault(u => u.UnitType == IfcUnitEnum.LENGTHUNIT);
if (cu != null)
{
return(cu.Name);
}
else
{
IfcConversionBasedUnit cbu =
ua.Units.OfType <IfcConversionBasedUnit>().FirstOrDefault(
u => u.UnitType == IfcUnitEnum.LENGTHUNIT);
if (cbu != null)
{
return(cbu.Name);
}
}
}
return("");
}
private static IfcConversionBasedUnit GetNewConversionUnit(IModel model, IfcUnitEnum unitType, ConversionBasedUnit unitEnum)
{
IfcConversionBasedUnit unit = model.Instances.New <IfcConversionBasedUnit>();
unit.UnitType = unitType;
switch (unitEnum)
{
case ConversionBasedUnit.INCH:
SetConversionUnitsParameters(model, unit, "inch", 25.4, IfcUnitEnum.LENGTHUNIT, IfcSIUnitName.METRE,
IfcSIPrefix.MILLI, GetLengthDimension(model));
break;
case ConversionBasedUnit.FOOT:
SetConversionUnitsParameters(model, unit, "foot", 304.8, IfcUnitEnum.LENGTHUNIT, IfcSIUnitName.METRE,
IfcSIPrefix.MILLI, GetLengthDimension(model));
break;
case ConversionBasedUnit.YARD:
SetConversionUnitsParameters(model, unit, "yard", 914, IfcUnitEnum.LENGTHUNIT, IfcSIUnitName.METRE,
IfcSIPrefix.MILLI, GetLengthDimension(model));
break;
case ConversionBasedUnit.MILE:
SetConversionUnitsParameters(model, unit, "mile", 1609, IfcUnitEnum.LENGTHUNIT, IfcSIUnitName.METRE,
null, GetLengthDimension(model));
break;
case ConversionBasedUnit.ACRE:
SetConversionUnitsParameters(model, unit, "acre", 4046.86, IfcUnitEnum.AREAUNIT,
IfcSIUnitName.SQUARE_METRE, null, GetAreaDimension(model));
break;
case ConversionBasedUnit.LITRE:
SetConversionUnitsParameters(model, unit, "litre", 0.001, IfcUnitEnum.VOLUMEUNIT,
IfcSIUnitName.CUBIC_METRE, null, GetVolumeDimension(model));
break;
case ConversionBasedUnit.PINT_UK:
SetConversionUnitsParameters(model, unit, "pint UK", 0.000568, IfcUnitEnum.VOLUMEUNIT,
IfcSIUnitName.CUBIC_METRE, null, GetVolumeDimension(model));
break;
case ConversionBasedUnit.PINT_US:
SetConversionUnitsParameters(model, unit, "pint US", 0.000473, IfcUnitEnum.VOLUMEUNIT,
IfcSIUnitName.CUBIC_METRE, null, GetVolumeDimension(model));
break;
case ConversionBasedUnit.GALLON_UK:
SetConversionUnitsParameters(model, unit, "gallon UK", 0.004546, IfcUnitEnum.VOLUMEUNIT,
IfcSIUnitName.CUBIC_METRE, null, GetVolumeDimension(model));
break;
case ConversionBasedUnit.GALLON_US:
SetConversionUnitsParameters(model, unit, "gallon US", 0.003785, IfcUnitEnum.VOLUMEUNIT,
IfcSIUnitName.CUBIC_METRE, null, GetVolumeDimension(model));
break;
case ConversionBasedUnit.OUNCE:
SetConversionUnitsParameters(model, unit, "ounce", 28.35, IfcUnitEnum.MASSUNIT, IfcSIUnitName.GRAM,
null, GetMassDimension(model));
break;
case ConversionBasedUnit.POUND:
SetConversionUnitsParameters(model, unit, "pound", 0.454, IfcUnitEnum.MASSUNIT, IfcSIUnitName.GRAM,
IfcSIPrefix.KILO, GetMassDimension(model));
break;
case ConversionBasedUnit.SQUARE_FOOT:
SetConversionUnitsParameters(model, unit, "square foot", 92903.04, IfcUnitEnum.AREAUNIT, IfcSIUnitName.METRE,
IfcSIPrefix.MILLI, GetAreaDimension(model));
break;
case ConversionBasedUnit.CUBIC_FOOT:
SetConversionUnitsParameters(model, unit, "cubic foot", 28316846.6, IfcUnitEnum.VOLUMEUNIT, IfcSIUnitName.METRE,
IfcSIPrefix.MILLI, GetVolumeDimension(model));
break;
}
return(unit);
}
private static void Main(string[] args)
{
var database = new DatabaseIfc(ModelView.Ifc4X3NotAssigned);
database.Factory.ApplicationDeveloper = "Sebastian Esser";
// turn owner history off
database.Factory.Options.GenerateOwnerHistory = false;
// basic setup
var site = new IfcSite(database, "SiteA");
var project = new IfcProject(
site,
"SampleProject with a span annotation",
IfcUnitAssignment.Length.Metre
);
// create an annotation
var annotation = new IfcAnnotation(database)
{
Name = "DesignSpeed",
};
annotation.AddComment("Annotation item span-placed along the alignment");
// link annotation with site
var contained = new IfcRelContainedInSpatialStructure(site);
contained.RelatedElements.Add(annotation);
#region Alignment
var alignment = new IfcAlignment(site)
{
Name = "Basic alignment with a single horizontal segment"
};
alignment.AddComment("Generate alignment representation");
// semantic
var horizSegment = new IfcAlignmentHorizontalSegment(
new IfcCartesianPoint(database, 5, 10),
0,
0,
0,
200,
IfcAlignmentHorizontalSegmentTypeEnum.LINE);
// geometric representation of a single segment. It gets referenced by IfcCompositeCurve.segments and IfcAlignmentSegment.Representation
var curveSegment = new IfcCurveSegment(
IfcTransitionCode.CONTSAMEGRADIENTSAMECURVATURE,
new IfcAxis2Placement2D(new IfcCartesianPoint(database, 0, 0)),
new IfcParameterValue(0),
new IfcParameterValue(200),
null);
var segments = new List <IfcSegment> {
curveSegment
};
var compositeCurve = new IfcCompositeCurve(segments);
var rep = new IfcShapeRepresentation(compositeCurve)
{
RepresentationIdentifier = "Axis",
RepresentationType = "Curve2D"
};
alignment.Representation = new IfcProductDefinitionShape(rep);
alignment.Axis = compositeCurve;
// create an alignment horizontal instance that takes a list of horizontal segments
var alignmentHorizontal = new IfcAlignmentHorizontal(database)
{
Segments = new LIST <IfcAlignmentHorizontalSegment>()
{
horizSegment
}
};
// link alignment and and its horizontal part semantically
new IfcRelAggregates(alignment, alignmentHorizontal);
// create a new alignmentSegment with then gets one curve segment as its geometric representation
var alignmentSegment = new IfcAlignmentSegment(database);
// link horizontal alignment with the recently created alignment segment
new IfcRelNests(alignmentHorizontal, alignmentSegment); // sorted list -> IfcRelNests
// connect geom representation to this segment
alignmentSegment.Representation = new IfcProductDefinitionShape(new IfcShapeRepresentation(curveSegment));
#endregion Alignment
#region Annotation placement
alignmentSegment.AddComment("Create placement for annotation");
var axis2place = new IfcAxis2PlacementLinear(
new IfcPointByDistanceExpression(25, compositeCurve),
null,
null);
var linPlacement = new IfcLinearPlacement(axis2place);
linPlacement.Distance = new IfcPointByDistanceExpression(128, compositeCurve);
annotation.ObjectPlacement = linPlacement;
#endregion Annotation placement
#region PSet
//var lengthUnit = new IfcSIUnit(database, IfcUnitEnum.LENGTHUNIT, IfcSIPrefix.NONE, IfcSIUnitName.METRE);
var lengthDerivedUnit = new IfcSIUnit(database, IfcUnitEnum.LENGTHUNIT, IfcSIPrefix.KILO, IfcSIUnitName.METRE);
lengthDerivedUnit.AddComment("PSet setup");
var timeBaseUnit = new IfcSIUnit(database, IfcUnitEnum.TIMEUNIT, IfcSIPrefix.NONE, IfcSIUnitName.SECOND);
var timeDerivedUnit = new IfcConversionBasedUnit(IfcUnitEnum.TIMEUNIT, "hour", new IfcMeasureWithUnit(new IfcPositiveInteger(3600), timeBaseUnit));
var ifcderivedunitelem1 = new IfcDerivedUnitElement(lengthDerivedUnit, 1);
var ifcderivedunitelem2 = new IfcDerivedUnitElement(timeDerivedUnit, -1);
var speedUnit = new IfcDerivedUnit(
new List <IfcDerivedUnitElement> {
ifcderivedunitelem1, ifcderivedunitelem2
},
IfcDerivedUnitEnum.LINEARVELOCITYUNIT);
var pSet = new IfcPropertySet(annotation, "PSET_SpeedData", new List <IfcProperty>
{
new IfcPropertySingleValue(database, "CargoSpeed", new IfcLinearVelocityMeasure(60), speedUnit),
new IfcPropertySingleValue(database, "DesignSpeed", new IfcLinearVelocityMeasure(110), speedUnit)
});
#endregion PSet
database.WriteFile("AlignmentWithSpanAnnotation.ifc");
}
public Model(IDictionary <Guid, BaseIfc> storage, string name, string description, IfcAddress address, IfcPerson user, IfcOrganization owner)
{
this.storage = storage;
this.storage.Add(address.Id, address);
this.storage.Add(user.Id, user);
this.storage.Add(owner.Id, owner);
// Create an organization for app creation.
var appOrg = new IfcOrganization(APPNAME);
this.storage.Add(appOrg.Id, appOrg);
// Create an authoring application.
var v = owner.GetType().Assembly.GetName().Version.ToString();
var app = new IfcApplication(appOrg, v, APPNAME, APPNAME);
this.storage.Add(app.Id, app);
// Create an person and history for the owner history.
var personAndOrg = new IfcPersonAndOrganization(user, owner);
this.storage.Add(personAndOrg.Id, personAndOrg);
// Create an owner history for the project.
var history = new IfcOwnerHistory(personAndOrg, app, UnixNow());
this.storage.Add(history.Id, history);
var lu = new IfcSIUnit(null, IfcUnitEnum.LENGTHUNIT, IfcSIUnitName.METRE);
this.storage.Add(lu.Id, lu);
var lengthUnit = new IfcUnit(lu);
var au = new IfcSIUnit(null, IfcUnitEnum.AREAUNIT, IfcSIUnitName.SQUARE_METRE);
this.storage.Add(au.Id, au);
var areaUnit = new IfcUnit(au);
var vu = new IfcSIUnit(null, IfcUnitEnum.VOLUMEUNIT, IfcSIUnitName.CUBIC_METRE);
this.storage.Add(vu.Id, vu);
var volumeUnit = new IfcUnit(vu);
var sau = new IfcSIUnit(null, IfcUnitEnum.SOLIDANGLEUNIT, IfcSIUnitName.STERADIAN);
this.storage.Add(sau.Id, sau);
var solidAngleUnit = new IfcUnit(sau);
var mu = new IfcSIUnit(null, IfcUnitEnum.MASSUNIT, IfcSIUnitName.GRAM);
this.storage.Add(mu.Id, mu);
var massUnit = new IfcUnit(mu);
var tu = new IfcSIUnit(null, IfcUnitEnum.TIMEUNIT, IfcSIUnitName.SECOND);
this.storage.Add(tu.Id, tu);
var timeUnit = new IfcUnit(tu);
var thu = new IfcSIUnit(null, IfcUnitEnum.THERMODYNAMICTEMPERATUREUNIT, IfcSIUnitName.DEGREE_CELSIUS);
this.storage.Add(thu.Id, thu);
var thermUnit = new IfcUnit(thu);
var lmu = new IfcSIUnit(null, IfcUnitEnum.LUMINOUSINTENSITYUNIT, IfcSIUnitName.LUMEN);
this.storage.Add(lmu.Id, lmu);
var lumUnit = new IfcUnit(lmu);
var pau = new IfcSIUnit(null, IfcUnitEnum.PLANEANGLEUNIT, IfcSIUnitName.RADIAN);
this.storage.Add(pau.Id, pau);
var planeAngleUnit = new IfcUnit(pau);
var measure = new IfcMeasureWithUnit(new IfcValue(new IfcMeasureValue(new IfcPlaneAngleMeasure(1.745e-2))), planeAngleUnit);
this.storage.Add(measure.Id, measure);
var dimExp = new IfcDimensionalExponents(0, 0, 0, 0, 0, 0, 0);
this.storage.Add(dimExp.Id, dimExp);
var du = new IfcConversionBasedUnit(dimExp, IfcUnitEnum.PLANEANGLEUNIT, "DEGREE", measure);
this.storage.Add(du.Id, du);
var degree = new IfcUnit(du);
var units = new List <IfcUnit> {
lengthUnit, areaUnit, volumeUnit, solidAngleUnit, massUnit, timeUnit, thermUnit, lumUnit, planeAngleUnit, degree
};
var unitAss = new IfcUnitAssignment(units);
this.storage.Add(unitAss.Id, unitAss);
// Create the project.
var proj = new IfcProject(IfcGuid.ToIfcGuid(Guid.NewGuid()), history, name, description, null, null, null, null, unitAss);
this.storage.Add(proj.Id, proj);
}
/// <summary>
///
/// </summary>
/// <param name="bbUnitBase"></param>
public void SetUnit(
BbUnit bbUnitBase)
{
_bbUnit = bbUnitBase;
IfcUnitAssignment = new IfcUnitAssignment { Units = new List<IfcUnit>() };
switch (_bbUnit)
{
case BbUnit.Metric:
#region metric
IfcUnitAssignment.Units.Add(
new IfcUnit
{
Value = new IfcSIUnit(
IfcUnitEnum.LENGTHUNIT, IfcSIPrefix.MILLI, IfcSIUnitName.METRE)
});
IfcUnitAssignment.Units.Add(
new IfcUnit
{
Value = new IfcSIUnit(
IfcUnitEnum.AREAUNIT, IfcSIUnitName.SQUARE_METRE)
});
IfcUnitAssignment.Units.Add(
new IfcUnit
{
Value = new IfcSIUnit(
IfcUnitEnum.VOLUMEUNIT, IfcSIUnitName.CUBIC_METRE)
});
#endregion
break;
case BbUnit.Imperial:
#region imperial
var leng = new IfcConversionBasedUnit
{
Dimensions = new IfcDimensionalExponents
{
LengthExponent = 1,
MassExponent = 0,
TimeExponent = 0,
ElectricCurrentExponent = 0,
ThermodynamicTemperatureExponent = 0,
AmountOfSubstanceExponent = 0,
LuminousIntensityExponent = 0,
},
UnitType = IfcUnitEnum.LENGTHUNIT,
Name = "FOOT",
ConversionFactor = new IfcMeasureWithUnit
{
ValueComponent = new IfcValue
{
Value = new IfcRatioMeasure { Value = 0.3048 }
},
UnitComponent = new IfcUnit { Value = new IfcSIUnit(IfcUnitEnum.LENGTHUNIT, IfcSIUnitName.METRE) }
}
};
var length = new IfcUnit { Value = leng };
IfcUnitAssignment.Units.Add(length);
var area = new IfcConversionBasedUnit
{
Dimensions = new IfcDimensionalExponents
{
LengthExponent = 2,
MassExponent = 0,
TimeExponent = 0,
ElectricCurrentExponent = 0,
ThermodynamicTemperatureExponent = 0,
AmountOfSubstanceExponent = 0,
LuminousIntensityExponent = 0,
},
UnitType = IfcUnitEnum.AREAUNIT,
Name = "SQUARE FOOT",
ConversionFactor = new IfcMeasureWithUnit
{
ValueComponent = new IfcValue
{
Value
= new IfcRatioMeasure { Value = 0.09290304 }
},
UnitComponent = new IfcUnit { Value = new IfcSIUnit(IfcUnitEnum.AREAUNIT, IfcSIUnitName.SQUARE_METRE) }
}
};
var areaUnit = new IfcUnit { Value = area };
IfcUnitAssignment.Units.Add(areaUnit);
var volume = new IfcConversionBasedUnit
{
Dimensions = new IfcDimensionalExponents
{
LengthExponent = 3,
MassExponent = 0,
TimeExponent = 0,
ElectricCurrentExponent = 0,
ThermodynamicTemperatureExponent = 0,
AmountOfSubstanceExponent = 0,
LuminousIntensityExponent = 0,
},
UnitType = IfcUnitEnum.VOLUMEUNIT,
Name = "CUBIC FOOT",
ConversionFactor = new IfcMeasureWithUnit
{
ValueComponent = new IfcValue
{
Value = new IfcRatioMeasure { Value = 0.02831685 }
},
UnitComponent = new IfcUnit { Value = new IfcSIUnit(IfcUnitEnum.VOLUMEUNIT, IfcSIUnitName.CUBIC_METRE) }
}
};
var volumeUnit = new IfcUnit { Value = volume };
IfcUnitAssignment.Units.Add(volumeUnit);
#endregion
break;
}
var degree = new IfcConversionBasedUnit
{
Dimensions = new IfcDimensionalExponents
{
LengthExponent = 0,
MassExponent = 0,
TimeExponent = 0,
ElectricCurrentExponent = 0,
ThermodynamicTemperatureExponent = 0,
AmountOfSubstanceExponent = 0,
LuminousIntensityExponent = 0,
},
UnitType = IfcUnitEnum.PLANEANGLEUNIT,
Name = "DEGREE",
ConversionFactor = new IfcMeasureWithUnit
{
ValueComponent = new IfcValue
{
Value = new IfcPlaneAngleMeasure
{
Value = 0.01745329
}
},
UnitComponent = new IfcUnit
{
Value = new IfcSIUnit(IfcUnitEnum.PLANEANGLEUNIT, IfcSIUnitName.RADIAN)
}
}
};
var angle = new IfcUnit { Value = degree };
IfcUnitAssignment.Units.Add(angle);
IfcUnitAssignment.Units.Add(
new IfcUnit()
{
Value = new IfcSIUnit(IfcUnitEnum.SOLIDANGLEUNIT, IfcSIUnitName.STERADIAN)
});
IfcUnitAssignment.Units.Add(
new IfcUnit()
{
Value = new IfcSIUnit(IfcUnitEnum.MASSUNIT, IfcSIUnitName.GRAM)
});
IfcUnitAssignment.Units.Add(
new IfcUnit()
{
Value = new IfcSIUnit(IfcUnitEnum.TIMEUNIT, IfcSIUnitName.SECOND)
});
IfcUnitAssignment.Units.Add(
new IfcUnit()
{
Value = new IfcSIUnit(IfcUnitEnum.THERMODYNAMICTEMPERATUREUNIT, IfcSIUnitName.DEGREE_CELSIUS)
});
IfcUnitAssignment.Units.Add(
new IfcUnit()
{
Value = new IfcSIUnit(IfcUnitEnum.LUMINOUSINTENSITYUNIT, IfcSIUnitName.LUMEN)
});
}
/// <summary>
/// Extract the unit name
/// </summary>
/// <param name="ifcUnit">ifcUnit object to get unit name from</param>
/// <returns>string holding unit name</returns>
public static string GetUnitName(IfcUnit ifcUnit)
{
string value = "";
string sqText = "";
string prefixUnit = "";
if (ifcUnit is IfcSIUnit)
{
IfcSIUnit ifcSIUnit = ifcUnit as IfcSIUnit;
prefixUnit = (ifcSIUnit.Prefix != null) ? ifcSIUnit.Prefix.ToString() : ""; //see IfcSIPrefix
value = ifcSIUnit.Name.ToString(); //see IfcSIUnitName
if (!string.IsNullOrEmpty(value))
{
if (value.Contains("_"))
{
string[] split = value.Split('_');
if (split.Length > 1)
{
sqText = split.First(); //see if _ delimited value such as SQUARE_METRE
}
value = sqText + prefixUnit + split.Last(); //combine to give full unit name
}
else
{
value = prefixUnit + value; //combine to give length name
}
}
}
else if (ifcUnit is IfcConversionBasedUnit)
{
IfcConversionBasedUnit IfcConversionBasedUnit = ifcUnit as IfcConversionBasedUnit;
value = (IfcConversionBasedUnit.Name != null) ? IfcConversionBasedUnit.Name.ToString() : "";
if (!string.IsNullOrEmpty(value))
{
if (value.Contains("_"))
{
string[] split = value.Split('_');
if (split.Length > 1)
{
sqText = split.First(); //see if _ delimited value such as SQUARE_METRE
}
value = sqText + split.Last(); //combine to give full unit name
}
}
}
else if (ifcUnit is IfcContextDependentUnit)
{
IfcContextDependentUnit ifcContextDependentUnit = ifcUnit as IfcContextDependentUnit;
value = ifcContextDependentUnit.Name;
if (string.IsNullOrEmpty(value)) //fall back to UnitType enumeration
{
value = ifcContextDependentUnit.UnitType.ToString();
}
}
else if (ifcUnit is IfcDerivedUnit)
{
IfcDerivedUnit ifcDerivedUnit = ifcUnit as IfcDerivedUnit;
value = ifcDerivedUnit.UnitType.ToString();
if ((string.IsNullOrEmpty(value)) && (ifcDerivedUnit.UserDefinedType != null)) //fall back to user defined
{
value = ifcDerivedUnit.UserDefinedType;
}
}
else if (ifcUnit is IfcMonetaryUnit)
{
value = GetMonetaryUnitName(ifcUnit as IfcMonetaryUnit);
return((string.IsNullOrEmpty(value)) ? DEFAULT_STRING : value); //don't want to lower case so return here
}
value = (string.IsNullOrEmpty(value)) ? DEFAULT_STRING : value.ToLower();
//check for unit spelling on meter/metre
if (value.Contains("metre") || value.Contains("meter"))
{
string culturemetre = ErrorDescription.meter;
if (!string.IsNullOrEmpty(culturemetre))
{
if (value.Contains("metre"))
{
value = value.Replace("metre", culturemetre);
}
else
{
value = value.Replace("meter", culturemetre);
}
}
}
return(value);
}
private static void CreateElementQuantity(XbimModel model, IfcWallStandardCase wall, IfcOwnerHistory ifcOwnerHistory)
{
//Create a IfcElementQuantity
//first we need a IfcPhysicalSimpleQuantity,first will use IfcQuantityArea
IfcQuantityArea ifcQuantityArea = model.Instances.New <IfcQuantityArea>(qa =>
{
qa.Name = "IfcQuantityArea:Area";
qa.Description = "";
qa.Unit = model.Instances.New <IfcSIUnit>(siu =>
{
siu.UnitType = IfcUnitEnum.AREAUNIT;
siu.Prefix = IfcSIPrefix.MILLI;
siu.Name = IfcSIUnitName.SQUARE_METRE;
siu.Dimensions = model.Instances.New <IfcDimensionalExponents>(de =>
{
de.LengthExponent = 1;
de.MassExponent = 0;
de.TimeExponent = 0;
de.ElectricCurrentExponent = 0;
de.ThermodynamicTemperatureExponent = 0;
de.AmountOfSubstanceExponent = 0;
de.LuminousIntensityExponent = 0;
});
});
qa.AreaValue = 100.0;
});
//next quantity IfcQuantityCount using IfcContextDependentUnit
IfcContextDependentUnit ifcContextDependentUnit = model.Instances.New <IfcContextDependentUnit>(cd =>
{
cd.Dimensions = model.Instances.New <IfcDimensionalExponents>(de =>
{
de.LengthExponent = 1;
de.MassExponent = 0;
de.TimeExponent = 0;
de.ElectricCurrentExponent = 0;
de.ThermodynamicTemperatureExponent = 0;
de.AmountOfSubstanceExponent = 0;
de.LuminousIntensityExponent = 0;
});
cd.UnitType = IfcUnitEnum.LENGTHUNIT;
cd.Name = "Elephants";
});
IfcQuantityCount ifcQuantityCount = model.Instances.New <IfcQuantityCount>(qc =>
{
qc.Name = "IfcQuantityCount:Elephant";
qc.CountValue = 12;
qc.Unit = ifcContextDependentUnit;
});
//next quantity IfcQuantityLength using IfcConversionBasedUnit
IfcConversionBasedUnit ifcConversionBasedUnit = model.Instances.New <IfcConversionBasedUnit>(cbu =>
{
cbu.ConversionFactor = model.Instances.New <IfcMeasureWithUnit>(mu =>
{
mu.ValueComponent = new IfcRatioMeasure(25.4);
mu.UnitComponent = model.Instances.New <IfcSIUnit>(siu =>
{
siu.UnitType = IfcUnitEnum.LENGTHUNIT;
siu.Prefix = IfcSIPrefix.MILLI;
siu.Name = IfcSIUnitName.METRE;
});
});
cbu.Dimensions = model.Instances.New <IfcDimensionalExponents>(de =>
{
de.LengthExponent = 1;
de.MassExponent = 0;
de.TimeExponent = 0;
de.ElectricCurrentExponent = 0;
de.ThermodynamicTemperatureExponent = 0;
de.AmountOfSubstanceExponent = 0;
de.LuminousIntensityExponent = 0;
});
cbu.UnitType = IfcUnitEnum.LENGTHUNIT;
cbu.Name = "Inch";
});
IfcQuantityLength ifcQuantityLength = model.Instances.New <IfcQuantityLength>(qa =>
{
qa.Name = "IfcQuantityLength:Length";
qa.Description = "";
qa.Unit = ifcConversionBasedUnit;
qa.LengthValue = 24.0;
});
//lets create the IfcElementQuantity
IfcElementQuantity ifcElementQuantity = model.Instances.New <IfcElementQuantity>(eq =>
{
eq.OwnerHistory = ifcOwnerHistory;
eq.Name = "Test:IfcElementQuantity";
eq.Description = "Measurement quantity";
eq.Quantities.Add(ifcQuantityArea);
eq.Quantities.Add(ifcQuantityCount);
eq.Quantities.Add(ifcQuantityLength);
});
//need to create the relationship
IfcRelDefinesByProperties ifcRelDefinesByProperties = model.Instances.New <IfcRelDefinesByProperties>(rdbp =>
{
rdbp.OwnerHistory = ifcOwnerHistory;
rdbp.Name = "Area Association";
rdbp.Description = "IfcElementQuantity associated to wall";
rdbp.RelatedObjects.Add(wall);
rdbp.RelatingPropertyDefinition = ifcElementQuantity;
});
}
/// <summary>
///
/// </summary>
/// <param name="bbUnitBase"></param>
public void SetUnit(
BbUnit bbUnitBase)
{
_bbUnit = bbUnitBase;
IfcUnitAssignment = new IfcUnitAssignment {
Units = new List <IfcUnit>()
};
switch (_bbUnit)
{
case BbUnit.Metric:
#region metric
IfcUnitAssignment.Units.Add(
new IfcUnit
{
Value = new IfcSIUnit(
IfcUnitEnum.LENGTHUNIT, IfcSIPrefix.MILLI, IfcSIUnitName.METRE)
});
IfcUnitAssignment.Units.Add(
new IfcUnit
{
Value = new IfcSIUnit(
IfcUnitEnum.AREAUNIT, IfcSIUnitName.SQUARE_METRE)
});
IfcUnitAssignment.Units.Add(
new IfcUnit
{
Value = new IfcSIUnit(
IfcUnitEnum.VOLUMEUNIT, IfcSIUnitName.CUBIC_METRE)
});
#endregion
break;
case BbUnit.Imperial:
#region imperial
var leng = new IfcConversionBasedUnit
{
Dimensions = new IfcDimensionalExponents
{
LengthExponent = 1,
MassExponent = 0,
TimeExponent = 0,
ElectricCurrentExponent = 0,
ThermodynamicTemperatureExponent = 0,
AmountOfSubstanceExponent = 0,
LuminousIntensityExponent = 0,
},
UnitType = IfcUnitEnum.LENGTHUNIT,
Name = "FOOT",
ConversionFactor = new IfcMeasureWithUnit
{
ValueComponent = new IfcValue
{
Value = new IfcRatioMeasure {
Value = 0.3048
}
},
UnitComponent = new IfcUnit {
Value = new IfcSIUnit(IfcUnitEnum.LENGTHUNIT, IfcSIUnitName.METRE)
}
}
};
var length = new IfcUnit {
Value = leng
};
IfcUnitAssignment.Units.Add(length);
var area = new IfcConversionBasedUnit
{
Dimensions = new IfcDimensionalExponents
{
LengthExponent = 2,
MassExponent = 0,
TimeExponent = 0,
ElectricCurrentExponent = 0,
ThermodynamicTemperatureExponent = 0,
AmountOfSubstanceExponent = 0,
LuminousIntensityExponent = 0,
},
UnitType = IfcUnitEnum.AREAUNIT,
Name = "SQUARE FOOT",
ConversionFactor = new IfcMeasureWithUnit
{
ValueComponent = new IfcValue
{
Value
= new IfcRatioMeasure {
Value = 0.09290304
}
},
UnitComponent = new IfcUnit {
Value = new IfcSIUnit(IfcUnitEnum.AREAUNIT, IfcSIUnitName.SQUARE_METRE)
}
}
};
var areaUnit = new IfcUnit {
Value = area
};
IfcUnitAssignment.Units.Add(areaUnit);
var volume = new IfcConversionBasedUnit
{
Dimensions = new IfcDimensionalExponents
{
LengthExponent = 3,
MassExponent = 0,
TimeExponent = 0,
ElectricCurrentExponent = 0,
ThermodynamicTemperatureExponent = 0,
AmountOfSubstanceExponent = 0,
LuminousIntensityExponent = 0,
},
UnitType = IfcUnitEnum.VOLUMEUNIT,
Name = "CUBIC FOOT",
ConversionFactor = new IfcMeasureWithUnit
{
ValueComponent = new IfcValue
{
Value = new IfcRatioMeasure {
Value = 0.02831685
}
},
UnitComponent = new IfcUnit {
Value = new IfcSIUnit(IfcUnitEnum.VOLUMEUNIT, IfcSIUnitName.CUBIC_METRE)
}
}
};
var volumeUnit = new IfcUnit {
Value = volume
};
IfcUnitAssignment.Units.Add(volumeUnit);
#endregion
break;
}
var degree = new IfcConversionBasedUnit
{
Dimensions = new IfcDimensionalExponents
{
LengthExponent = 0,
MassExponent = 0,
TimeExponent = 0,
ElectricCurrentExponent = 0,
ThermodynamicTemperatureExponent = 0,
AmountOfSubstanceExponent = 0,
LuminousIntensityExponent = 0,
},
UnitType = IfcUnitEnum.PLANEANGLEUNIT,
Name = "DEGREE",
ConversionFactor = new IfcMeasureWithUnit
{
ValueComponent = new IfcValue
{
Value = new IfcPlaneAngleMeasure
{
Value = 0.01745329
}
},
UnitComponent = new IfcUnit
{
Value = new IfcSIUnit(IfcUnitEnum.PLANEANGLEUNIT, IfcSIUnitName.RADIAN)
}
}
};
var angle = new IfcUnit {
Value = degree
};
IfcUnitAssignment.Units.Add(angle);
IfcUnitAssignment.Units.Add(
new IfcUnit()
{
Value = new IfcSIUnit(IfcUnitEnum.SOLIDANGLEUNIT, IfcSIUnitName.STERADIAN)
});
IfcUnitAssignment.Units.Add(
new IfcUnit()
{
Value = new IfcSIUnit(IfcUnitEnum.MASSUNIT, IfcSIUnitName.GRAM)
});
IfcUnitAssignment.Units.Add(
new IfcUnit()
{
Value = new IfcSIUnit(IfcUnitEnum.TIMEUNIT, IfcSIUnitName.SECOND)
});
IfcUnitAssignment.Units.Add(
new IfcUnit()
{
Value = new IfcSIUnit(IfcUnitEnum.THERMODYNAMICTEMPERATUREUNIT, IfcSIUnitName.DEGREE_CELSIUS)
});
IfcUnitAssignment.Units.Add(
new IfcUnit()
{
Value = new IfcSIUnit(IfcUnitEnum.LUMINOUSINTENSITYUNIT, IfcSIUnitName.LUMEN)
});
}
