Class Ifc4::IfcMaterial¶

Defined in File Ifc4.h

Nested Relationships¶

This class is a nested type of Struct Ifc4.

Inheritance Relationships¶

Base Type¶

public Ifc4::IfcMaterialDefinition (Class Ifc4::IfcMaterialDefinition)

Class Documentation¶

class Ifc4::IfcMaterial : public Ifc4::IfcMaterialDefinition ¶

IfcMaterial is a homogeneous or inhomogeneous substance that can be used to form elements (physical products or their components). IfcMaterial is the basic entity for material designation and definition; this includes identification by name and classification (via reference to an external classification), as well as association of material properties (isotropic or anisotropic) defined by (subtypes of) IfcMaterialProperties. An instance of IfcMaterial may be associated to an element or element type using the IfcRelAssociatesMaterial relationship. The assignment might either be direct as a single material information, or via

a material layer set a material profile set a material constituent set

An IfcMaterial may also have presentation information associated. Such presentation information is provided by IfcMaterialDefinitionRepresentation, associating line styles, hatching definitions or surface coloring/rendering information to a material.

HISTORYNew entity in IFC2x4

IFC2x4 CHANGE The attributes Description and Category have been added.

Public Types

typedef IfcTemplatedEntityList<IfcMaterial> list¶

Public Functions

std::string Name() const¶

Name of the material.

EXAMPLE A view definition may require Material.Name to uniquely specify e.g. concrete or steel grade, in which case the attribute Material.Category could take the value ‘Concrete’ or ‘Steel’.

NOTE Material grade may have diffenrent meaning in different view definitions, e.g. strength grade for structural design and analysis, or visible appearance grade in architectural application. Also, more elaborate material grade definition may be associated as classification via inverse attribute HasExternalReferences.

void setName(std::string v)¶

bool hasDescription() const¶: Whether the optional attribute Description is defined for this IfcMaterial.

std::string Description() const¶

Definition of the material in more descriptive terms than given by attributes Name or Category.

IFC2x4 CHANGE The attribute has been added at the end of attribute list.

void setDescription(std::string v)¶

bool hasCategory() const¶: Whether the optional attribute Category is defined for this IfcMaterial.

std::string Category() const¶

Definition of the category (group or type) of material, in more general terms than given by attribute Name.

EXAMPLE A view definition may require each Material.Name to be unique, e.g. for each concrete or steel grade used in a project, in which case Material.Category could take the values ‘Concrete’ or ‘Steel’.

IFC2x4 CHANGE The attribute has been added at the end of attribute list.