IfcColourSpecification

BACnet MVD

#### IfcColourSpecification

Natural language names

| Farbbeschreibung
| Colour Specification
| Spécification de couleur

Change log

Item | SPF | XML | Change | Description
--- | --- | --- | --- | ---
IFC2x3 to IFC4
IfcColourSpecification |  |  | MOVED | Schema changed from IFCPRESENTATIONRESOURCE to IFCPRESENTATIONAPPEARANCERESOURCE.

##### Semantic definitions at the entity

Entity definition

> NOTE Definition according to ISO/CD 10303-46:1992
> The colour specification entity contains a direct colour definition. Colour component values refer directly to a specific colour space.

> NOTE Corresponding ISO 10303 name: colour_specification. It has been made into an abstract entity in IFC. Please refer to ISO/IS 10303-46:1994, p. 138 for the final definition of the formal standard.

> HISTORY New entity in IFC2x2.

Attribute definitions

# | Attribute | Type | Cardinality | Description | B
--- | --- | --- | --- | --- | ---

1

Name

IfcLabel

?

Optional name given to a particular colour specification in addition to the colour components (like the RGB values).

> EXAMPLE Names of a industry colour classification, such as RAL.

> IFC2x3 CHANGE Attribute added.

X

X

##### Inherited definitions from supertypes

Entity inheritance
Attribute inheritance

# | Attribute | Type | Cardinality | Description | B
--- | --- | --- | --- | --- | ---
IfcPresentationItem
IfcColourSpecification

1

Name

IfcLabel

?

Optional name given to a particular colour specification in addition to the colour components (like the RGB values).

> EXAMPLE Names of a industry colour classification, such as RAL.

> IFC2x3 CHANGE Attribute added.

X

X

##### Formal representations

XML Specification
`<xs:element name="IfcColourSpecification" type="ifc:IfcColourSpecification" abstract="true" substitutionGroup="ifc:IfcPresentationItem" nillable="true"/>
<xs:complexType name="IfcColourSpecification" abstract="true">
<xs:complexContent>
<xs:extension base="ifc:IfcPresentationItem">
<xs:attribute name="Name" type="ifc:IfcLabel" use="optional"/>
</xs:extension>
</xs:complexContent>
</xs:complexType>
`
EXPRESS Specification
`ENTITY IfcColourSpecification
ABSTRACT SUPERTYPE OF(IfcColourRgb)
SUBTYPE OF (IfcPresentationItem);
Name : OPTIONAL IfcLabel;
END_ENTITY;

EXPRESS-G diagram

`

References: IfcColour

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