Figure 89 — Body Clipping Geometry
The Body Clipping Geometry is the representation of the 3D shape of a product by using Constructive Solid Geometry models with difference operations involving half space solids only.
The following attribute values for the IfcShapeRepresentation holding this geometric representation shall be used:
NOTE This representation type is predominately used for compatibility with previous releases of the standard.
Figure 89 illustrates an instance diagram.
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Figure 89 — Body Clipping Geometry |
<?xml version="1.0"?>
<ConceptTemplate xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" 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>
</ConceptTemplate>
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