Figure 93 — Body CSG Geometry
The Body CSG Geometry is the representation of the 3D shape of a product by Constructive Solid Geometry models.
The following attribute values for the IfcShapeRepresentation holding this geometric representation shall be used:
NOTE The Items__IfcBooleanResult and IfcPrimitive3D shall also be allowed for compatibility with previous releases of the standard.
Figure 93 illustrates an instance diagram.
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Figure 93 — Body CSG Geometry |
<?xml version="1.0"?>
<ConceptTemplate xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" uuid="a0ab7630-6965-495e-be8f-d106fd2599c2" name="Body CSG Geometry" 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] = '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" />
<AttributeRule AttributeName="Description" />
</AttributeRules>
</EntityRule>
</EntityRules>
</AttributeRule>
</Rules>
</ConceptTemplate>
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