4.9.1 Layer

Presentation layers may be used to organize geometry into groups that may be shown or hidden. Such designation is only for viewing and editing purposes and does not imply any semantic meaning.

Figure 75 illustrates an instance diagram.

LayerIfcPresentationLayerAssignmentIfcLabelIfcTextIfcLayeredItemIfcIdentifier

Figure 75 — Layer

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="99ffb0d4-ada2-4b79-aa01-943fa3d834f1" name="Layer" status="sample" applicableSchema="IFC4" applicableEntity="IfcPresentationLayerAssignment">
  <Rules>
    <AttributeRule RuleID="LayerName" AttributeName="Name">
      <EntityRules>
        <EntityRule EntityName="IfcLabel" />
      </EntityRules>
    </AttributeRule>
    <AttributeRule AttributeName="Description">
      <EntityRules>
        <EntityRule EntityName="IfcText" />
      </EntityRules>
    </AttributeRule>
    <AttributeRule AttributeName="AssignedItems">
      <EntityRules>
        <EntityRule EntityName="IfcLayeredItem" />
      </EntityRules>
    </AttributeRule>
    <AttributeRule RuleID="LayerIdentifier" AttributeName="Identifier">
      <EntityRules>
        <EntityRule EntityName="IfcIdentifier" />
      </EntityRules>
    </AttributeRule>
  </Rules>
</ConceptTemplate>

Link to this page  Link to this page