4.8.2.9.7 Body AdvancedBrep Geometry

The Body Brep Geometry is the representation of the 3D shape of a product by boundary representation models, including NURBS.

The following attribute values for the IfcShapeRepresentation holding this geometric representation shall be used:

Figure 89 illustrates an instance diagram.

Body AdvancedBrep GeometryIfcElementIfcProductDefinitionShapeIfcShapeRepresentationIfcGeometricRepresentationContextIfcLabelIfcLabelIfcAdvancedBrepAdvanced Brep GeometryIfcFacetedBrepFaceted Brep Geometry

Figure 89 — Body AdvancedBrep Geometry

mvdXML Specification
<?xml version="1.0"?>
<ConceptTemplate xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" uuid="fc763575-50f1-4bc0-bbf2-382380152047" name="Body AdvancedBrep Geometry" status="sample" applicableSchema="IFC4" applicableEntity="IfcElement">
  <Rules>
    <AttributeRule AttributeName="Representation">
      <EntityRules>
        <EntityRule EntityName="IfcProductDefinitionShape">
          <AttributeRules>
            <AttributeRule AttributeName="Representations">
              <EntityRules>
                <EntityRule EntityName="IfcShapeRepresentation">
                  <AttributeRules>
                    <AttributeRule AttributeName="ContextOfItems">
                      <EntityRules>
                        <EntityRule EntityName="IfcGeometricRepresentationContext" />
                      </EntityRules>
                    </AttributeRule>
                    <AttributeRule RuleID="Identifier" AttributeName="RepresentationIdentifier">
                      <EntityRules>
                        <EntityRule EntityName="IfcLabel" />
                      </EntityRules>
                    </AttributeRule>
                    <AttributeRule RuleID="Type" AttributeName="RepresentationType">
                      <EntityRules>
                        <EntityRule EntityName="IfcLabel">
                          <Constraints>
                            <Constraint Expression="Type[Value] = 'AdvancedBrep'" />
                          </Constraints>
                        </EntityRule>
                      </EntityRules>
                    </AttributeRule>
                    <AttributeRule RuleID="Items" AttributeName="Items">
                      <EntityRules>
                        <EntityRule EntityName="IfcAdvancedBrep">
                          <References>
                            <Template ref="3b6904cd-5852-4d29-b39e-64b326a74db0" />
                          </References>
                        </EntityRule>
                        <EntityRule EntityName="IfcFacetedBrep">
                          <References>
                            <Template ref="bb55a495-9092-4230-afc6-fb0360d7d452" />
                          </References>
                        </EntityRule>
                      </EntityRules>
                    </AttributeRule>
                  </AttributeRules>
                </EntityRule>
              </EntityRules>
            </AttributeRule>
            <AttributeRule AttributeName="Name" />
            <AttributeRule AttributeName="Description" />
          </AttributeRules>
        </EntityRule>
      </EntityRules>
    </AttributeRule>
  </Rules>
</ConceptTemplate>

Examples:

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