IfcShapeRepresentationTypes

Definition from IAI: The function gets the representation type and the assigned set of representation items as input and verifies whether the correct items are assigned according to the representation type given.

HISTORY New function in Release IFC2x
IFC2x Edition 3 CHANGE The check for MappedRepresentation has been changed to allow multiple mapped items.

EXPRESS specification:

FUNCTION IfcShapeRepresentationTypes

(RepType : IfcLabel; Items : SET OF IfcRepresentationItem) : LOGICAL;

    LOCAL
      Count : INTEGER := 0;
    END_LOCAL;

    CASE RepType OF
    'Curve2D' :
      BEGIN
        Count := SIZEOF(QUERY(temp <* Items | ('IFCGEOMETRYRESOURCE.IFCCURVE' IN TYPEOF(temp))
                 AND (temp.Dim = 2)));
      END;
    'Annotation2D' :
      BEGIN
        Count := SIZEOF(QUERY(temp <* Items | (
                  SIZEOF(TYPEOF(temp) * [
                   'IFCGEOMETRYRESOURCE.IFCPOINT',
                   'IFCGEOMETRYRESOURCE.IFCCURVE',
                   'IFCGEOMETRICMODELRESOURCE.IFCGEOMETRICCURVESET',
                   'IFCPRESENTATIONDEFINITIONRESOURCE.IFCANNOTATIONFILLAREA',
                   'IFCPRESENTATIONDEFINITIONRESOURCE.IFCDEFINEDSYMBOL',
                   'IFCPRESENTATIONDEFINITIONRESOURCE.IFCTEXTLITERAL',
                   'IFCPRESENTATIONDIMENSIONINGRESOURCE.IFCDRAUGHTINGCALLOUT']) = 1)
                 ));
      END;
    'GeometricSet' :
      BEGIN
        Count := SIZEOF(QUERY(temp <* Items | ('IFCGEOMETRICMODELRESOURCE.IFCGEOMETRICSET' IN TYPEOF(temp))
                 OR ('IFCGEOMETRYRESOURCE.IFCPOINT' IN TYPEOF(temp))
                 OR ('IFCGEOMETRYRESOURCE.IFCCURVE' IN TYPEOF(temp))
                 OR ('IFCGEOMETRYRESOURCE.IFCSURFACE' IN TYPEOF(temp))));
      END;
    'GeometricCurveSet' :
      BEGIN
        Count := SIZEOF(QUERY(temp <* Items | ('IFCGEOMETRICMODELRESOURCE.IFCGEOMETRICCURVESET' IN TYPEOF(temp))
                 OR ('IFCGEOMETRICMODELRESOURCE.IFCGEOMETRICSET' IN TYPEOF(temp))
                 OR ('IFCGEOMETRYRESOURCE.IFCPOINT' IN TYPEOF(temp))
                 OR ('IFCGEOMETRYRESOURCE.IFCCURVE' IN TYPEOF(temp))));
         REPEAT i:=1 TO HIINDEX(Items);
           IF ('IFCGEOMETRYRESOURCE.IFCGEOMETRICSET' IN TYPEOF(Items[i]))
           THEN
             IF (SIZEOF(QUERY(temp <* Items[i]\IfcGeometricSet.Elements | 'IFCGEOMETRYRESOURCE.IFCSURFACE' IN TYPEOF(temp))) > 0)
             THEN
               Count := Count - 1;
             END_IF;
           END_IF;
         END_REPEAT;
      END;
    'SurfaceModel' :
      BEGIN
        Count := SIZEOF(QUERY(temp <* Items | SIZEOF([
                   'IFCGEOMETRICMODELRESOURCE.IFCSHELLBASEDSURFACEMODEL',
                   'IFCGEOMETRICMODELRESOURCE.IFCFACEBASEDSURFACEMODEL',
                   'IFCGEOMETRICMODELRESOURCE.IFCFACETEDBREP',
                   'IFCGEOMETRICMODELRESOURCE.IFCFACETEDBREPWITHVOIDS'] * TYPEOF(temp)) >= 1
                 ));
      END;
    'SolidModel' :
      BEGIN
        Count := SIZEOF(QUERY(temp <* Items | ('IFCGEOMETRICMODELRESOURCE.IFCSOLIDMODEL' IN TYPEOF(temp))));
      END;
    'SweptSolid' :
      BEGIN
        Count := SIZEOF(QUERY(temp <* Items | ('IFCGEOMETRICMODELRESOURCE.IFCSWEPTAREASOLID' IN TYPEOF(temp))));
      END;
    'CSG' :
      BEGIN
        Count := SIZEOF(QUERY(temp <* Items | ('IFCGEOMETRICMODELRESOURCE.IFCBOOLEANRESULT' IN TYPEOF(temp))));
      END;
    'Clipping' :
      BEGIN
        Count := SIZEOF(QUERY(temp <* Items | ('IFCGEOMETRICMODELRESOURCE.IFCBOOLEANCLIPPINGRESULT' IN TYPEOF(temp))));
      END;
    'AdvancedSweptSolid' :
      BEGIN
        Count := SIZEOF(QUERY(temp <* Items | ('IFCGEOMETRICMODELRESOURCE.IFCSURFACECURVESWEPTAREASOLID' IN TYPEOF(temp))
                 OR ('IFCGEOMETRICMODELRESOURCE.IFCSWEPTDISKSOLID' IN TYPEOF(temp))));
      END;
    'Brep' :
      BEGIN
        Count := SIZEOF(QUERY(temp <* Items | ('IFCGEOMETRICMODELRESOURCE.IFCFACETEDBREP' IN TYPEOF(temp))
                 OR ('IFCGEOMETRICMODELRESOURCE.IFCFACETEDBREPWITHVOIDS' IN TYPEOF(temp))));
      END;
    'BoundingBox' :
      BEGIN
        Count := SIZEOF(QUERY(temp <* Items | ('IFCGEOMETRICMODELRESOURCE.IFCBOUNDINGBOX' IN TYPEOF(temp))));
        IF (SIZEOF(Items) > 1)
        THEN
          Count := 0;
        END_IF;
      END;
    'SectionedSpine' :
      BEGIN
        Count := SIZEOF(QUERY(temp <* Items | ('IFCGEOMETRICMODELRESOURCE.IFCSECTIONEDSPINE' IN TYPEOF(temp))));
      END;
    'MappedRepresentation' :
      BEGIN
        Count := SIZEOF(QUERY(temp <* Items | ('IFCGEOMETRYRESOURCE.IFCMAPPEDITEM' IN TYPEOF(temp))));
      END;
     OTHERWISE : RETURN(?);
    END_CASE;
    RETURN (Count = SIZEOF(Items));

END_FUNCTION;