8.18 IfcRepresentationResource

8.18.1 Schema definition

This schema defines the representation of shape and topology as important definitional properties for products defined within the IFC Object Model. The representations characterize certain properties of a product, and any product can be defined by zero, one, or many of those properties. The schema defines two ways to represent definitional properties of products:

  • topological representation
  • geometric shape representation
  • geo referencing, providing the real map coordinate location of an element in accord with GIS practice,

The geometric shape representation allows for

  • multiple shape representations for the same product definition shape of a product
  • separate shape representations for components or parts of the product definition shape by using shape aspects

8.18.2 Types

  1. IfcCoordinateReferenceSystemSelect
  2. IfcGeometricProjectionEnum
  3. IfcGlobalOrLocalEnum
  4. IfcProductRepresentationSelect

8.18.3 Entities

  1. IfcCoordinateOperation
  2. IfcCoordinateReferenceSystem
  3. IfcGeometricRepresentationContext
  4. IfcGeometricRepresentationSubContext
  5. IfcMapConversion
  6. IfcMaterialDefinitionRepresentation
  7. IfcProductDefinitionShape
  8. IfcProductRepresentation
  9. IfcProjectedCRS
  10. IfcRepresentation
  11. IfcRepresentationContext
  12. IfcShapeAspect
  13. IfcShapeModel
  14. IfcShapeRepresentation
  15. IfcStyleModel
  16. IfcStyledRepresentation
  17. IfcTopologyRepresentation

8.18.4 Property Sets

No resources are available in this category.

8.18.5 Quantity Sets

No resources are available in this category.

8.18.6 Functions

  1. IfcConvertDirectionInto2D
  2. IfcSameValidPrecision
  3. IfcShapeRepresentationTypes
  4. IfcTopologyRepresentationTypes

8.18.7 Rules

  1. IfcRepresentationContextSameWCS

8.18.8 PropertyEnumerations

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