Class Ifc4::IfcMaterialDefinition

Nested Relationships

This class is a nested type of Struct Ifc4.

Inheritance Relationships

Base Type

Derived Types

Class Documentation

class Ifc4::IfcMaterialDefinition : public IfcUtil::IfcBaseEntity

IfcMaterialDefinition is a general supertype for all material related information items in IFC that have common material related properties that may include association of material with some shape parameters or assignments to identified parts of a component. There are three ways of assigning materials to a single component or multiple components; they are characterized as:

by layer - assigning a material to a layer with constant thickness by profile - assigning a material to a profile with a constant of varying shape along an extrusion by constituents - assigning a material to an identified part of a component shape; the identification is by a keyword rather than by a shape parameter

Each instantiable subtype of IfcMaterialDefinition may have material properties assigned, or have an external classification of its definition. It can be assigned to either a subtype of IfcElement, or a subtype of IfcElementType by using the objectified relationship IfcRelAssociatesMaterial.

HISTORY New entity in IFC2x4

Subclassed by Ifc4::IfcMaterial, Ifc4::IfcMaterialConstituent, Ifc4::IfcMaterialConstituentSet, Ifc4::IfcMaterialLayer, Ifc4::IfcMaterialLayerSet, Ifc4::IfcMaterialProfile, Ifc4::IfcMaterialProfileSet

Public Types

typedef IfcTemplatedEntityList<IfcMaterialDefinition> list

Public Functions

IfcTemplatedEntityList<IfcRelAssociatesMaterial>::ptr AssociatedTo() const
IfcTemplatedEntityList<IfcExternalReferenceRelationship>::ptr HasExternalReferences() const
IfcTemplatedEntityList<IfcMaterialProperties>::ptr HasProperties() const
const IfcParse::entity &declaration() const
IfcMaterialDefinition(IfcEntityInstanceData *e)

Public Static Functions

const IfcParse::entity &Class()