Figure 80 — Body Geometry
Elements may have a 'Body' representation describing the volumetric shape of the object. Such representation may be used for 3D coordination, rendering or quantity take-off. Geometry may be based on boundary representations describing outer faces, primitives such as spheres or cones, swept solids such as profile extrusions or revolutions, Constructive Solid Geometry (CSG) such as clippings or subtractions of other shapes, or Non-Uniform Rational B-Spline (NURBS) geometry. Surface styles may indicate particular colors, textures, and reflectance for 3D rendering.
The representation identifier of the body representation is:
Figure 80 illustrates an instance diagram.
|
Figure 80 — Body Geometry |
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<AttributeRule AttributeName="Representation">
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<AttributeRule RuleID="Identifier" AttributeName="RepresentationIdentifier">
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<Constraint Expression="Identifier[Value] = 'Body'" />
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<EntityRule EntityName="IfcProductDefinitionShape">
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<AttributeRule AttributeName="ContextOfItems">
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<EntityRule EntityName="IfcGeometricRepresentationContext" />
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<AttributeRule RuleID="Identifier" AttributeName="RepresentationIdentifier">
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<EntityRule EntityName="IfcLabel" />
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<AttributeRule RuleID="Type" AttributeName="RepresentationType">
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<EntityRule EntityName="IfcLabel">
<Constraints>
<Constraint Expression="Type[Value] = 'SurfaceOrSolidModel'" />
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<AttributeRule RuleID="Items" AttributeName="Items">
<EntityRules>
<EntityRule EntityName="IfcSolidModel" />
<EntityRule EntityName="IfcTessellatedFaceSet" />
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<EntityRule EntityName="IfcGeometricRepresentationContext" />
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<AttributeRule RuleID="Identifier" AttributeName="RepresentationIdentifier">
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<EntityRule EntityName="IfcLabel" />
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<AttributeRule RuleID="Type" AttributeName="RepresentationType">
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<EntityRule EntityName="IfcLabel">
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<Constraint Expression="Type[Value] = 'SurfaceModel'" />
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<AttributeRule RuleID="Items" AttributeName="Items">
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<EntityRule EntityName="IfcTessellatedFaceSet" />
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<AttributeRule AttributeName="ContextOfItems">
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<EntityRule EntityName="IfcGeometricRepresentationContext" />
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<AttributeRule RuleID="Identifier" AttributeName="RepresentationIdentifier">
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<EntityRule EntityName="IfcLabel" />
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<AttributeRule RuleID="Type" AttributeName="RepresentationType">
<EntityRules>
<EntityRule EntityName="IfcLabel">
<Constraints>
<Constraint Expression="Type[Value] = 'Tessellation'" />
</Constraints>
</EntityRule>
</EntityRules>
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<AttributeRule RuleID="Items" AttributeName="Items">
<EntityRules>
<EntityRule EntityName="IfcTriangulatedFaceSet">
<References>
<Template ref="8a96e670-c72c-4dde-933a-b8e9bffd6983" />
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<EntityRule EntityName="IfcPolygonalFaceSet">
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<ConceptTemplate uuid="cb7c18fa-cf83-4db1-be1b-c013ba4ed672" name="Body SweptSolid Geometry" status="sample" applicableSchema="IFC4" applicableEntity="IfcElement">
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<AttributeRule AttributeName="Representation">
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<EntityRule EntityName="IfcProductDefinitionShape">
<AttributeRules>
<AttributeRule AttributeName="Representations">
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<EntityRule EntityName="IfcShapeRepresentation">
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<AttributeRule AttributeName="ContextOfItems">
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<EntityRule EntityName="IfcGeometricRepresentationContext" />
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<AttributeRule RuleID="Identifier" AttributeName="RepresentationIdentifier">
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<EntityRule EntityName="IfcLabel" />
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<AttributeRule RuleID="Type" AttributeName="RepresentationType">
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<EntityRule EntityName="IfcLabel" />
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<AttributeRule RuleID="Geometry" AttributeName="Items">
<EntityRules>
<EntityRule EntityName="IfcSweptAreaSolid" />
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<AttributeRule AttributeName="Name" />
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<EntityRule EntityName="IfcProductDefinitionShape">
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<EntityRule EntityName="IfcLabel">
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<Constraint Expression="Type[Value] = 'AdvancedSweptSolid'" />
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<EntityRule EntityName="IfcLabel" />
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<EntityRule EntityName="IfcLabel">
<Constraints>
<Constraint Expression="Type[Value] = 'Brep'" />
</Constraints>
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<AttributeRule RuleID="Items" AttributeName="Items">
<EntityRules>
<EntityRule EntityName="IfcFacetedBrep" />
</EntityRules>
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</EntityRule>
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</AttributeRule>
<AttributeRule AttributeName="Name" />
<AttributeRule AttributeName="Description" />
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<AttributeRule AttributeName="Representation">
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<EntityRule EntityName="IfcProductDefinitionShape">
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<AttributeRule AttributeName="Representations">
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<EntityRule EntityName="IfcShapeRepresentation">
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<AttributeRule AttributeName="ContextOfItems">
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<EntityRule EntityName="IfcGeometricRepresentationContext" />
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<AttributeRule RuleID="Identifier" AttributeName="RepresentationIdentifier">
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<EntityRule EntityName="IfcLabel" />
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<AttributeRule RuleID="Type" AttributeName="RepresentationType">
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<EntityRule EntityName="IfcLabel">
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<AttributeRule RuleID="Items" AttributeName="Items">
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<ConceptTemplate uuid="a0ab7630-6965-495e-be8f-d106fd2599c2" name="Body CSG Geometry" status="sample" applicableSchema="IFC4" applicableEntity="IfcElement">
<Rules>
<AttributeRule AttributeName="Representation">
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<EntityRule EntityName="IfcProductDefinitionShape">
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<AttributeRule AttributeName="Representations">
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<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] = 'CSG'" />
</Constraints>
</EntityRule>
</EntityRules>
</AttributeRule>
<AttributeRule AttributeName="Items">
<EntityRules>
<EntityRule EntityName="IfcCsgSolid">
<AttributeRules>
<AttributeRule AttributeName="TreeRootExpression" />
</AttributeRules>
</EntityRule>
</EntityRules>
</AttributeRule>
</AttributeRules>
</EntityRule>
</EntityRules>
</AttributeRule>
<AttributeRule AttributeName="Name" />
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<ConceptTemplate uuid="2cdbc2f5-9b0c-43ea-9d2a-9d72d0147e00" name="Body Clipping 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] = 'Clipping'" />
</Constraints>
</EntityRule>
</EntityRules>
</AttributeRule>
<AttributeRule RuleID="Items" AttributeName="Items">
<EntityRules>
<EntityRule EntityName="IfcBooleanClippingResult">
<AttributeRules>
<AttributeRule AttributeName="Operator">
<EntityRules>
<EntityRule EntityName="IfcBooleanOperator" />
</EntityRules>
</AttributeRule>
<AttributeRule AttributeName="FirstOperand">
<EntityRules>
<EntityRule EntityName="IfcCsgPrimitive3D" />
<EntityRule EntityName="IfcSolidModel" />
<EntityRule EntityName="IfcBooleanClippingResult" />
</EntityRules>
</AttributeRule>
<AttributeRule AttributeName="SecondOperand">
<EntityRules>
<EntityRule EntityName="IfcHalfSpaceSolid" />
<EntityRule EntityName="IfcPolygonalBoundedHalfSpace">
<AttributeRules>
<AttributeRule AttributeName="BaseSurface">
<EntityRules>
<EntityRule EntityName="IfcPlane" />
</EntityRules>
</AttributeRule>
<AttributeRule AttributeName="AgreementFlag">
<EntityRules>
<EntityRule EntityName="IfcBoolean" />
</EntityRules>
</AttributeRule>
<AttributeRule AttributeName="Position">
<EntityRules>
<EntityRule EntityName="IfcAxis2Placement3D" />
</EntityRules>
</AttributeRule>
<AttributeRule AttributeName="PolygonalBoundary">
<EntityRules>
<EntityRule EntityName="IfcIndexedPolyCurve" />
</EntityRules>
</AttributeRule>
</AttributeRules>
</EntityRule>
</EntityRules>
</AttributeRule>
</AttributeRules>
</EntityRule>
</EntityRules>
</AttributeRule>
</AttributeRules>
</EntityRule>
</EntityRules>
</AttributeRule>
<AttributeRule AttributeName="Name" />
<AttributeRule AttributeName="Description" />
</AttributeRules>
</EntityRule>
</EntityRules>
</AttributeRule>
</Rules>
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</SubTemplates>
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