IfcIndexedTextureMap

BACnet MVD

#### IfcIndexedTextureMap

Natural language names

| Liste von Indizes für Texturen
| Indexed Texture Map

Change log

Item | SPF | XML | Change | Description
--- | --- | --- | --- | ---
IFC2x3 to IFC4
IfcIndexedTextureMap |  |  | ADDED |

##### Semantic definitions at the entity

Entity definition

The IfcIndexedTextureMap provides the mapping of the 2-dimensional texture coordinates to the surface onto which it is mapped. It is used for mapping the texture to faces of tessellated face sets.

The IfcIndexedTextureMap defines an index into an indexed list of texture coordinates. The TexCoords are a two-dimensional list of texture coordinates provided by two parameter values. Subtypes of IfcIndexedTextureMap establish the index attribute corresponding to subtypes of IfcTessellatedFaceSet defining the corresponding index lists of vertices.

> HISTORY New entity in IFC4.

Attribute definitions

# | Attribute | Type | Cardinality | Description | B
--- | --- | --- | --- | --- | ---
2 | MappedTo | IfcTessellatedFaceSet |  | Reference to the IfcTessellatedFaceSet to which it applies the texture map. | X | X
3 | TexCoords | IfcTextureVertexList |  | Indexable list of texture vertices. | X | X

##### Inherited definitions from supertypes

Entity inheritance
Attribute inheritance

# | Attribute | Type | Cardinality | Description | B
--- | --- | --- | --- | --- | ---
IfcPresentationItem
IfcTextureCoordinate
1 | Maps | IfcSurfaceTexture | L[1:?] | Reference to the one (or many in case of multi textures with identity transformation to geometric surfaces) subtype(s) of IfcSurfaceTexture that are mapped to a geometric surface by the texture coordinate transformation. | X | X
IfcIndexedTextureMap
2 | MappedTo | IfcTessellatedFaceSet |  | Reference to the IfcTessellatedFaceSet to which it applies the texture map. | X | X
3 | TexCoords | IfcTextureVertexList |  | Indexable list of texture vertices. | X | X

##### Formal representations

XML Specification
`<xs:element name="IfcIndexedTextureMap" type="ifc:IfcIndexedTextureMap" abstract="true" substitutionGroup="ifc:IfcTextureCoordinate" nillable="true"/>
<xs:complexType name="IfcIndexedTextureMap" abstract="true">
<xs:complexContent>
<xs:extension base="ifc:IfcTextureCoordinate">
<xs:sequence>
<xs:element name="TexCoords" type="ifc:IfcTextureVertexList" nillable="true"/>
</xs:sequence>
</xs:extension>
</xs:complexContent>
</xs:complexType>
`
EXPRESS Specification
`ENTITY IfcIndexedTextureMap
ABSTRACT SUPERTYPE OF(IfcIndexedTriangleTextureMap)
SUBTYPE OF (IfcTextureCoordinate);
MappedTo : IfcTessellatedFaceSet;
TexCoords : IfcTextureVertexList;
END_ENTITY;

EXPRESS-G diagram

`

References: IfcTessellatedFaceSet

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