public IfcSIUnit(IfcUnitEnum unitType, IfcSIUnitName name)
{
Dimensions = new IfcDimensionalExponents();
Dimensions.IsDerived = true;
UnitType = unitType;
Name = name;
}
public IfcSIUnit(IfcUnitEnum unitType, IfcSIUnitName name)
{
Dimensions = new IfcDimensionalExponents();
Dimensions.IsDerived = true;
UnitType = unitType;
Name = name;
}
/// <summary>
/// Get Symbol string for SIUnit unit
/// </summary>
/// <returns>String holding symbol</returns>
public static string GetSymbol(this IfcSIUnit ifcSIUnit)
{
IfcSIUnitName ifcSIUnitName = ifcSIUnit.Name;
IfcSIPrefix ifcSIPrefix;
string value = string.Empty;
string prefix = string.Empty;
if (ifcSIUnit.Prefix != null)
{
ifcSIPrefix = (IfcSIPrefix)ifcSIUnit.Prefix;
switch (ifcSIPrefix)
{
case IfcSIPrefix.CENTI:
prefix = "c";
break;
case IfcSIPrefix.MILLI:
prefix = "m";
break;
case IfcSIPrefix.KILO:
prefix = "k";
break;
default: //TODO: the other values of IfcSIPrefix
prefix = ifcSIPrefix.ToString();
break;
}
}
switch (ifcSIUnitName)
{
case IfcSIUnitName.METRE:
value = prefix + "m";
break;
case IfcSIUnitName.SQUARE_METRE:
value = prefix + "m" + '\u00B2'; //((char)0x00B2)might need to look at this for other cultures
break;
case IfcSIUnitName.CUBIC_METRE:
value = prefix + "m" + '\u00B3'; //((char)0x00B3)
break;
case IfcSIUnitName.GRAM:
value = prefix + "g";
break;
default: //TODO: the other values of IfcSIUnitName
value = ifcSIUnit.ToString();
break;
}
return(value);
}
public SIUnit(IfcStore model, IfcSIUnitName name, IfcUnitEnum unitType)
{
ifcSiUnit = model.Instances.New <IfcSIUnit>(p =>
{
p.Name = name;
p.UnitType = unitType;
});
this.name = name;
this.unitType = unitType;
}
public void SetOrChangeSiUnit(IfcUnitEnum unitType, IfcSIUnitName siUnitName,
IfcSIPrefix?siUnitPrefix)
{
if (UnitsInContext == null)
{
UnitsInContext = Model.Instances.New <IfcUnitAssignment>();
}
IfcUnitAssignment unitsAssignment = UnitsInContext;
unitsAssignment.SetOrChangeSiUnit(unitType, siUnitName, siUnitPrefix);
}
/// <summary>
/// Sets the Length Unit to be SIUnit and SIPrefix, returns false if the units are not SI
/// </summary>
/// <param name = "siUnitName"></param>
/// <param name = "siPrefix"></param>
/// <returns></returns>
public bool SetSiLengthUnits(IfcSIUnitName siUnitName, IfcSIPrefix?siPrefix)
{
var si = Units.OfType <IfcSIUnit>().FirstOrDefault(u => u.UnitType == IfcUnitEnum.LENGTHUNIT);
if (si != null)
{
si.Prefix = siPrefix;
si.Name = siUnitName;
return(true);
}
return(false);
}
/// <summary>
/// Sets the Length Unit to be SIUnit and SIPrefix, returns false if the units are not SI
/// </summary>
/// <param name = "ua"></param>
/// <param name = "siUnitName"></param>
/// <param name = "siPrefix"></param>
/// <returns></returns>
public static bool SetSILengthUnits(this IfcUnitAssignment ua, IfcSIUnitName siUnitName, IfcSIPrefix?siPrefix)
{
IfcSIUnit si = ua.Units.OfType <IfcSIUnit>().FirstOrDefault(u => u.UnitType == IfcUnitEnum.LENGTHUNIT);
if (si != null)
{
si.Prefix = siPrefix;
si.Name = siUnitName;
return(true);
}
else
{
return(false);
}
}
public static IIfcSIUnit NewIfcSIUnit(this IModel s, IfcUnitEnum unitType, IfcSIUnitName name, IfcSIPrefix?prefix = null)
{
switch (s.SchemaVersion)
{
case Xbim.Common.Step21.XbimSchemaVersion.Ifc2X3:
return(s.NewIfc2x3SIUnit(unitType, name, prefix));
case Xbim.Common.Step21.XbimSchemaVersion.Ifc4:
case Xbim.Common.Step21.XbimSchemaVersion.Ifc4x1:
return(s.Instances.New <Xbim.Ifc4.MeasureResource.IfcSIUnit>(x =>
{
x.Name = name;
x.Prefix = prefix;
x.UnitType = unitType;
}));
default:
throw new NotImplementedException($"Missing implementation for {s.SchemaVersion}");
}
}
public override void Parse(int propIndex, IPropertyValue value, int[] nestedIndex)
{
switch (propIndex)
{
case 0:
case 1:
base.Parse(propIndex, value, nestedIndex);
return;
case 2:
_prefix = (IfcSIPrefix)System.Enum.Parse(typeof(IfcSIPrefix), value.EnumVal, true);
return;
case 3:
_name = (IfcSIUnitName)System.Enum.Parse(typeof(IfcSIUnitName), value.EnumVal, true);
return;
default:
throw new XbimParserException(string.Format("Attribute index {0} is out of range for {1}", propIndex + 1, GetType().Name.ToUpper()));
}
}
public void SetOrChangeSiUnit(IfcUnitEnum unitType, IfcSIUnitName siUnitName,
IfcSIPrefix?siUnitPrefix)
{
var model = Model;
var si = Units.OfType <IfcSIUnit>().FirstOrDefault(u => u.UnitType == unitType);
if (si != null)
{
si.Prefix = siUnitPrefix;
si.Name = siUnitName;
}
else
{
Units.Add(model.Instances.New <IfcSIUnit>(s =>
{
s.UnitType = unitType;
s.Name = siUnitName;
s.Prefix = siUnitPrefix;
}));
}
}
public XbimCoBieValueHelper(DecimalValueType decimalValue, IfcSIUnitName defaultSiUnitName, IfcSIPrefix?defaultSiPrefix = null)
{
//set regardless
SiPrefix = defaultSiPrefix;
SiUnitName = defaultSiUnitName;
if (decimalValue == null || !decimalValue.DecimalValueSpecified)
{
IsNull = true;
Value = null;
}
else
{
IsNull = false;
Value = decimalValue.DecimalValue;
if (!string.IsNullOrWhiteSpace(decimalValue.UnitName))
{
//acording the COBie standard units should start with the SI prefix and end with the unit name
var trimmedName = decimalValue.UnitName.Trim();
foreach (IfcSIUnitName unit in Enum.GetValues(typeof(IfcSIUnitName)))
{
if (trimmedName.EndsWith(unit.ToString(), true, CultureInfo.InvariantCulture))
{
SiUnitName = unit;
break;
}
}
foreach (IfcSIPrefix prefix in Enum.GetValues(typeof(IfcSIPrefix)))
{
if (trimmedName.StartsWith(prefix.ToString(), true, CultureInfo.InvariantCulture))
{
defaultSiPrefix = prefix;
break;
}
}
}
}
}
public override void IfcParse(int propIndex, IPropertyValue value)
{
switch (propIndex)
{
case 0:
break; //do nothing NamedUnit.Dimensional Exponents is overrideen and derived in this class
case 1:
base.IfcParse(propIndex, value);
break;
case 2:
_prefix = (IfcSIPrefix)Enum.Parse(typeof(IfcSIPrefix), value.EnumVal, true);
break;
case 3:
_name = (IfcSIUnitName)Enum.Parse(typeof(IfcSIUnitName), value.EnumVal, true);
break;
default:
this.HandleUnexpectedAttribute(propIndex, value); break;
}
}
protected IfcSIUnit ChangeOrNewLengthUnit(IfcSIUnitName name, IfcSIPrefix?prefix = null)
{
var project = Store.Instances.OfType <IfcProject>().First();
var assigment = project.UnitsInContext;
if (null == assigment)
{
assigment = Store.NewIfc4UnitAssignment(IfcUnitEnum.LENGTHUNIT, name, prefix);
}
// Test for existing
var unit = assigment.Units.Where(u => (u as IfcSIUnit)?.UnitType == IfcUnitEnum.LENGTHUNIT).FirstOrDefault() as IfcSIUnit;
if (null == unit)
{
unit = Store.Instances.New <IfcSIUnit>(u => { u.UnitType = IfcUnitEnum.LENGTHUNIT; });
assigment.Units.Add(unit);
}
unit.Name = name;
unit.Prefix = prefix;
return(unit);
}
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;
}
public static void SetOrChangeSIUnit(this IfcUnitAssignment ua, IfcUnitEnum unitType, IfcSIUnitName siUnitName,
IfcSIPrefix? siUnitPrefix)
{
IModel model = ua.ModelOf;
IfcSIUnit si = ua.Units.OfType<IfcSIUnit>().FirstOrDefault(u => u.UnitType == unitType);
if (si != null)
{
si.Prefix = siUnitPrefix;
si.Name = siUnitName;
}
else
{
ua.Units.Add(model.Instances.New<IfcSIUnit>(s =>
{
s.UnitType = unitType;
s.Name = siUnitName;
s.Prefix = siUnitPrefix;
}));
}
}
/// <summary>
/// Sets the Length Unit to be SIUnit and SIPrefix, returns false if the units are not SI
/// </summary>
/// <param name = "ua"></param>
/// <param name = "siUnitName"></param>
/// <param name = "siPrefix"></param>
/// <returns></returns>
public static bool SetSILengthUnits(this IfcUnitAssignment ua, IfcSIUnitName siUnitName, IfcSIPrefix? siPrefix)
{
IfcSIUnit si = ua.Units.OfType<IfcSIUnit>().FirstOrDefault(u => u.UnitType == IfcUnitEnum.LENGTHUNIT);
if (si != null)
{
si.Prefix = siPrefix;
si.Name = siUnitName;
return true;
}
else
return false;
}
public static IfcDimensionalExponents IfcDimensionsForSiUnit(IfcSIUnitName n)
{
throw new NotImplementedException();
}
public static void SetOrChangeSIUnit(this IfcProject ifcProject, IfcUnitEnum unitType, IfcSIUnitName siUnitName,
IfcSIPrefix? siUnitPrefix)
{
IModel model = ifcProject.ModelOf;
if (ifcProject.UnitsInContext == null)
{
ifcProject.UnitsInContext = model.Instances.New<IfcUnitAssignment>();
}
IfcUnitAssignment unitsAssignment = ifcProject.UnitsInContext;
unitsAssignment.SetOrChangeSIUnit(unitType, siUnitName, siUnitPrefix);
}
public static IfcUnitAssignment NewIfc4UnitAssignment(this IModel s, IfcUnitEnum unitType, IfcSIUnitName name, IfcSIPrefix?prefix = null)
{
var unitAssignment = s.Instances.New <IfcUnitAssignment>();
unitAssignment.Units.Add(s.Instances.New <IfcSIUnit>(store =>
{
store.UnitType = unitType;
store.Name = name;
store.Prefix = prefix;
}));
return(unitAssignment);
}
public static void SetOrChangeSIUnit(this IfcUnitAssignment ua, IfcUnitEnum unitType, IfcSIUnitName siUnitName,
IfcSIPrefix?siUnitPrefix)
{
IModel model = ua.ModelOf;
IfcSIUnit si = ua.Units.OfType <IfcSIUnit>().FirstOrDefault(u => u.UnitType == unitType);
if (si != null)
{
si.Prefix = siUnitPrefix;
si.Name = siUnitName;
}
else
{
ua.Units.Add(model.Instances.New <IfcSIUnit>(s =>
{
s.UnitType = unitType;
s.Name = siUnitName;
s.Prefix = siUnitPrefix;
}));
}
}
public IfcSIUnit(IfcDimensionalExponents __Dimensions, IfcUnitEnum __UnitType, IfcSIPrefix?__Prefix, IfcSIUnitName __Name)
: base(__Dimensions, __UnitType)
{
this._Prefix = __Prefix;
this._Name = __Name;
}
/// <summary>
/// Sets SI unit or change it if it exists. It does not affect any physical
/// values in the model, it just changes their meaning.
/// </summary>
/// <param name="UnitType">Enumeration of unit types</param>
/// <param name="siUnitName">Enumeration of base SI unit names</param>
/// <param name="siUnitPrefix">Enumeration of SI units prefixes</param>
public void SetOrChangeSIUnit(IfcUnitEnum UnitType, IfcSIUnitName siUnitName, IfcSIPrefix? siUnitPrefix)
{
((IfcProject)Model.IfcProject).SetOrChangeSIUnit(UnitType, siUnitName, siUnitPrefix);
}
/// <summary>
/// Definition from ISO/CD 10303-41:1992: The function returns the dimensional exponents of the given SI-unit.
/// </summary>
/// <param name="name"></param>
/// <returns></returns>
public static IfcDimensionalExponents IfcDimensionsForSiUnit(IfcSIUnitName name)
{
switch (name)
{
case IfcSIUnitName.metre:
return(new IfcDimensionalExponents(1, 0, 0, 0, 0, 0, 0));
case IfcSIUnitName.square_metre:
return(new IfcDimensionalExponents(2, 0, 0, 0, 0, 0, 0));
case IfcSIUnitName.cubic_metre:
return(new IfcDimensionalExponents(3, 0, 0, 0, 0, 0, 0));
case IfcSIUnitName.gram:
return(new IfcDimensionalExponents(0, 1, 0, 0, 0, 0, 0));
case IfcSIUnitName.second:
return(new IfcDimensionalExponents(0, 0, 1, 0, 0, 0, 0));
case IfcSIUnitName.ampere:
return(new IfcDimensionalExponents(0, 0, 0, 1, 0, 0, 0));
case IfcSIUnitName.kelvin:
return(new IfcDimensionalExponents(0, 0, 0, 0, 1, 0, 0));
case IfcSIUnitName.mole:
return(new IfcDimensionalExponents(0, 0, 0, 0, 0, 1, 0));
case IfcSIUnitName.candela:
return(new IfcDimensionalExponents(0, 0, 0, 0, 0, 0, 1));
case IfcSIUnitName.radian:
return(new IfcDimensionalExponents(0, 0, 0, 0, 0, 0, 0));
case IfcSIUnitName.steradian:
return(new IfcDimensionalExponents(0, 0, 0, 0, 0, 0, 0));
case IfcSIUnitName.hertz:
return(new IfcDimensionalExponents(0, 0, -1, 0, 0, 0, 0));
case IfcSIUnitName.newton:
return(new IfcDimensionalExponents(1, 1, -2, 0, 0, 0, 0));
case IfcSIUnitName.pascal:
return(new IfcDimensionalExponents(-1, 1, -2, 0, 0, 0, 0));
case IfcSIUnitName.joule:
return(new IfcDimensionalExponents(2, 1, -2, 0, 0, 0, 0));
case IfcSIUnitName.watt:
return(new IfcDimensionalExponents(2, 1, -3, 0, 0, 0, 0));
case IfcSIUnitName.coulomb:
return(new IfcDimensionalExponents(0, 0, 1, 1, 0, 0, 0));
case IfcSIUnitName.volt:
return(new IfcDimensionalExponents(2, 1, -3, -1, 0, 0, 0));
case IfcSIUnitName.farad:
return(new IfcDimensionalExponents(-2, -1, 4, 1, 0, 0, 0));
case IfcSIUnitName.ohm:
return(new IfcDimensionalExponents(2, 1, -3, -2, 0, 0, 0));
case IfcSIUnitName.siemens:
return(new IfcDimensionalExponents(-2, -1, 3, 2, 0, 0, 0));
case IfcSIUnitName.weber:
return(new IfcDimensionalExponents(2, 1, -2, -1, 0, 0, 0));
case IfcSIUnitName.tesla:
return(new IfcDimensionalExponents(0, 1, -2, -1, 0, 0, 0));
case IfcSIUnitName.henry:
return(new IfcDimensionalExponents(2, 1, -2, -2, 0, 0, 0));
case IfcSIUnitName.degree_celsius:
return(new IfcDimensionalExponents(0, 0, 0, 0, 1, 0, 0));
case IfcSIUnitName.lumen:
return(new IfcDimensionalExponents(0, 0, 0, 0, 0, 0, 1));
case IfcSIUnitName.lux:
return(new IfcDimensionalExponents(-2, 0, 0, 0, 0, 0, 1));
case IfcSIUnitName.becquerel:
return(new IfcDimensionalExponents(0, 0, -1, 0, 0, 0, 0));
case IfcSIUnitName.gray:
return(new IfcDimensionalExponents(2, 0, -2, 0, 0, 0, 0));
case IfcSIUnitName.sievert:
return(new IfcDimensionalExponents(2, 0, -2, 0, 0, 0, 0));
default:
return(new IfcDimensionalExponents(0, 0, 0, 0, 0, 0, 0));
}
}
internal IfcDimensionalExponents IfcDimensionsForSiUnit(IfcSIUnitName name)
{
IfcDimensionalExponents result;
if (ExponentsCache.TryGetValue(name, out result))
{
return(result);
}
switch (name)
{
case IfcSIUnitName.METRE: result = GetOrCreateExponents(new List <int> {
1, 0, 0, 0, 0, 0, 0
}); break;
case IfcSIUnitName.SQUARE_METRE: result = GetOrCreateExponents(new List <int> {
2, 0, 0, 0, 0, 0, 0
}); break;
case IfcSIUnitName.CUBIC_METRE: result = GetOrCreateExponents(new List <int> {
3, 0, 0, 0, 0, 0, 0
}); break;
case IfcSIUnitName.GRAM: result = GetOrCreateExponents(new List <int> {
0, 1, 0, 0, 0, 0, 0
}); break;
case IfcSIUnitName.SECOND: result = GetOrCreateExponents(new List <int> {
0, 0, 1, 0, 0, 0, 0
}); break;
case IfcSIUnitName.AMPERE: result = GetOrCreateExponents(new List <int> {
0, 0, 0, 1, 0, 0, 0
}); break;
case IfcSIUnitName.KELVIN: result = GetOrCreateExponents(new List <int> {
0, 0, 0, 0, 1, 0, 0
}); break;
case IfcSIUnitName.MOLE: result = GetOrCreateExponents(new List <int> {
0, 0, 0, 0, 0, 1, 0
}); break;
case IfcSIUnitName.CANDELA: result = GetOrCreateExponents(new List <int> {
0, 0, 0, 0, 0, 0, 1
}); break;
case IfcSIUnitName.RADIAN: result = GetOrCreateExponents(new List <int> {
0, 0, 0, 0, 0, 0, 0
}); break;
case IfcSIUnitName.STERADIAN: result = GetOrCreateExponents(new List <int> {
0, 0, 0, 0, 0, 0, 0
}); break;
case IfcSIUnitName.HERTZ: result = GetOrCreateExponents(new List <int> {
0, 0, -1, 0, 0, 0, 0
}); break;
case IfcSIUnitName.NEWTON: result = GetOrCreateExponents(new List <int> {
1, 1, -2, 0, 0, 0, 0
}); break;
case IfcSIUnitName.PASCAL: result = GetOrCreateExponents(new List <int> {
-1, 1, -2, 0, 0, 0, 0
}); break;
case IfcSIUnitName.JOULE: result = GetOrCreateExponents(new List <int> {
2, 1, -2, 0, 0, 0, 0
}); break;
case IfcSIUnitName.WATT: result = GetOrCreateExponents(new List <int> {
2, 1, -3, 0, 0, 0, 0
}); break;
case IfcSIUnitName.COULOMB: result = GetOrCreateExponents(new List <int> {
0, 0, 1, 1, 0, 0, 0
}); break;
case IfcSIUnitName.VOLT: result = GetOrCreateExponents(new List <int> {
2, 1, -3, -1, 0, 0, 0
}); break;
case IfcSIUnitName.FARAD: result = GetOrCreateExponents(new List <int> {
-2, -1, 4, 1, 0, 0, 0
}); break;
case IfcSIUnitName.OHM: result = GetOrCreateExponents(new List <int> {
2, 1, -3, -2, 0, 0, 0
}); break;
case IfcSIUnitName.SIEMENS: result = GetOrCreateExponents(new List <int> {
-2, -1, 3, 2, 0, 0, 0
}); break;
case IfcSIUnitName.WEBER: result = GetOrCreateExponents(new List <int> {
2, 1, -2, -1, 0, 0, 0
}); break;
case IfcSIUnitName.TESLA: result = GetOrCreateExponents(new List <int> {
0, 1, -2, -1, 0, 0, 0
}); break;
case IfcSIUnitName.HENRY: result = GetOrCreateExponents(new List <int> {
2, 1, -2, -2, 0, 0, 0
}); break;
case IfcSIUnitName.DEGREE_CELSIUS: result = GetOrCreateExponents(new List <int> {
0, 0, 0, 0, 1, 0, 0
}); break;
case IfcSIUnitName.LUMEN: result = GetOrCreateExponents(new List <int> {
0, 0, 0, 0, 0, 0, 1
}); break;
case IfcSIUnitName.LUX: result = GetOrCreateExponents(new List <int> {
-2, 0, 0, 0, 0, 0, 1
}); break;
case IfcSIUnitName.BECQUEREL: result = GetOrCreateExponents(new List <int> {
0, 0, -1, 0, 0, 0, 0
}); break;
case IfcSIUnitName.GRAY: result = GetOrCreateExponents(new List <int> {
2, 0, -2, 0, 0, 0, 0
}); break;
case IfcSIUnitName.SIEVERT: result = GetOrCreateExponents(new List <int> {
2, 0, -2, 0, 0, 0, 0
}); break;
default: result = GetOrCreateExponents(new List <int> {
0, 0, 0, 0, 0, 0, 0
}); break;
}
ExponentsCache.Add(name, result);
return(result);
}
public static IfcDimensionalExponents DimensionsForSiUnit(IfcSIUnitName? siUnit)
{
if (siUnit == null) return null;
switch (siUnit)
{
case IfcSIUnitName.METRE:
return new IfcDimensionalExponents(1, 0, 0, 0, 0, 0, 0);
case IfcSIUnitName.SQUARE_METRE:
return new IfcDimensionalExponents(2, 0, 0, 0, 0, 0, 0);
case IfcSIUnitName.CUBIC_METRE:
return new IfcDimensionalExponents(3, 0, 0, 0, 0, 0, 0);
case IfcSIUnitName.GRAM:
return new IfcDimensionalExponents(0, 1, 0, 0, 0, 0, 0);
case IfcSIUnitName.SECOND:
return new IfcDimensionalExponents(0, 0, 1, 0, 0, 0, 0);
case IfcSIUnitName.AMPERE:
return new IfcDimensionalExponents(0, 0, 0, 1, 0, 0, 0);
case IfcSIUnitName.KELVIN:
return new IfcDimensionalExponents(0, 0, 0, 0, 1, 0, 0);
case IfcSIUnitName.MOLE:
return new IfcDimensionalExponents(0, 0, 0, 0, 0, 1, 0);
case IfcSIUnitName.CANDELA:
return new IfcDimensionalExponents(0, 0, 0, 0, 0, 0, 1);
case IfcSIUnitName.RADIAN:
return new IfcDimensionalExponents(0, 0, 0, 0, 0, 0, 0);
case IfcSIUnitName.STERADIAN:
return new IfcDimensionalExponents(0, 0, 0, 0, 0, 0, 0);
case IfcSIUnitName.HERTZ:
return new IfcDimensionalExponents(0, 0, -1, 0, 0, 0, 0);
case IfcSIUnitName.NEWTON:
return new IfcDimensionalExponents(1, 1, -2, 0, 0, 0, 0);
case IfcSIUnitName.PASCAL:
return new IfcDimensionalExponents(-1, 1, -2, 0, 0, 0, 0);
case IfcSIUnitName.JOULE:
return new IfcDimensionalExponents(2, 1, -2, 0, 0, 0, 0);
case IfcSIUnitName.WATT:
return new IfcDimensionalExponents(2, 1, -3, 0, 0, 0, 0);
case IfcSIUnitName.COULOMB:
return new IfcDimensionalExponents(0, 0, 1, 1, 0, 0, 0);
case IfcSIUnitName.VOLT:
return new IfcDimensionalExponents(2, 1, -3, -1, 0, 0, 0);
case IfcSIUnitName.FARAD:
return new IfcDimensionalExponents(-2, -1, 4, 1, 0, 0, 0);
case IfcSIUnitName.OHM:
return new IfcDimensionalExponents(2, 1, -3, -2, 0, 0, 0);
case IfcSIUnitName.SIEMENS:
return new IfcDimensionalExponents(-2, -1, 3, 2, 0, 0, 0);
case IfcSIUnitName.WEBER:
return new IfcDimensionalExponents(2, 1, -2, -1, 0, 0, 0);
case IfcSIUnitName.TESLA:
return new IfcDimensionalExponents(0, 1, -2, -1, 0, 0, 0);
case IfcSIUnitName.HENRY:
return new IfcDimensionalExponents(2, 1, -2, -2, 0, 0, 0);
case IfcSIUnitName.DEGREE_CELSIUS:
return new IfcDimensionalExponents(0, 0, 0, 0, 1, 0, 0);
case IfcSIUnitName.LUMEN:
return new IfcDimensionalExponents(0, 0, 0, 0, 0, 0, 1);
case IfcSIUnitName.LUX:
return new IfcDimensionalExponents(-2, 0, 0, 0, 0, 0, 1);
case IfcSIUnitName.BECQUEREL:
return new IfcDimensionalExponents(0, 0, -1, 0, 0, 0, 0);
case IfcSIUnitName.GRAY:
return new IfcDimensionalExponents(2, 0, -2, 0, 0, 0, 0);
case IfcSIUnitName.SIEVERT:
return new IfcDimensionalExponents(2, 0, -2, 0, 0, 0, 0);
default:
return new IfcDimensionalExponents(0, 0, 0, 0, 0, 0, 0);
}
}
public override void IfcParse(int propIndex, IPropertyValue value)
{
switch (propIndex)
{
case 0:
break; //do nothing NamedUnit.Dimensional Exponents is overrideen and derived in this class
case 1:
base.IfcParse(propIndex, value);
break;
case 2:
_prefix = (IfcSIPrefix) Enum.Parse(typeof (IfcSIPrefix), value.EnumVal, true);
break;
case 3:
_name = (IfcSIUnitName) Enum.Parse(typeof (IfcSIUnitName), value.EnumVal, true);
break;
default:
this.HandleUnexpectedAttribute(propIndex, value); break;
}
}
} // derived
/// <summary>
/// Construct a IfcSIUnit with all required attributes.
/// </summary>
public IfcSIUnit(IfcDimensionalExponents dimensions, IfcUnitEnum unitType, IfcSIUnitName name) : base(dimensions, unitType)
{
Name = name;
}
public IfcSIUnit(IfcDimensionalExponents dimensions, IfcUnitEnum unitType, IfcSIPrefix prefix, IfcSIUnitName name) : base(dimensions, unitType)
{
Prefix = prefix;
Name = name;
}
public static void SetOrChangeSIUnit(this IfcProject ifcProject, IfcUnitEnum unitType, IfcSIUnitName siUnitName,
IfcSIPrefix?siUnitPrefix)
{
IModel model = ifcProject.ModelOf;
if (ifcProject.UnitsInContext == null)
{
ifcProject.UnitsInContext = model.Instances.New <IfcUnitAssignment>();
}
IfcUnitAssignment unitsAssignment = ifcProject.UnitsInContext;
unitsAssignment.SetOrChangeSIUnit(unitType, siUnitName, siUnitPrefix);
}
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;
}
public IfcSIUnit(DatabaseIfc m, IfcUnitEnum unitEnum, IfcSIPrefix pref, IfcSIUnitName name) : base(m, unitEnum, false) { mPrefix = pref; mName = name; }
