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Project Global Positioning

Adding a geospatial coordinate reference to the geometric representation context using a recognized coordinate reference system (CRS). This allows to position the project coordinate system on Earth (normally using eastings, northings, elevation above horizontal and vertical datums, and orientation).

HISTORY New concept template enabled by schema enhancements in IFC4.

concept {
    IfcProject:RepresentationContexts -> IfcGeometricRepresentationContext
    IfcProject:ObjectType -> IfcLabel_1
    IfcProject:LongName -> IfcLabel_2
    IfcGeometricRepresentationContext:HasCoordinateOperation -> IfcMapConversion:SourceCRS
    IfcMapConversion:Eastings -> IfcLengthMeasure_0
    IfcMapConversion:Northings -> IfcLengthMeasure_1
    IfcMapConversion:OrthogonalHeight -> IfcLengthMeasure_2
    IfcMapConversion:XAxisAbscissa -> IfcReal_0
    IfcMapConversion:XAxisOrdinate -> IfcReal_1
    IfcMapConversion:Scale -> IfcReal_2
    IfcMapConversion:TargetCRS -> IfcProjectedCRS
    IfcProjectedCRS:Name -> IfcLabel_0
    IfcProjectedCRS:Description -> IfcText
    IfcProjectedCRS:GeodeticDatum -> IfcIdentifier_0
    IfcProjectedCRS:VerticalDatum -> IfcIdentifier_1
    IfcProjectedCRS:MapProjection -> IfcIdentifier_2
    IfcProjectedCRS:MapZone -> IfcIdentifier_3
    IfcGeometricRepresentationContext:HasCoordinateOperation[binding="HasGlobalPosition"]
    IfcMapConversion:Eastings[binding="Eastings"]
    IfcMapConversion:Northings[binding="Northings"]
    IfcMapConversion:OrthogonalHeight[binding="OrthogonalHeight"]
    IfcMapConversion:XAxisAbscissa[binding="XAxisAbscissa"]
    IfcMapConversion:XAxisOrdinate[binding="XAxisOrdinate"]
    IfcProjectedCRS:Name[binding="CRSName"]
}