IfcIndexedTextureMap

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	C
2	MappedTo	IfcTessellatedFaceSet	[1:1]	Reference to the IfcTessellatedFaceSet to which it applies the texture map.	X
3	TexCoords	IfcTextureVertexList	[1:1]	Indexable list of texture vertices.	X

Inherited definitions from supertypes

Entity inheritance

Attribute inheritance

#	Attribute	Type	Cardinality	Description	C
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
IfcIndexedTextureMap
2	MappedTo	IfcTessellatedFaceSet	[1:1]	Reference to the IfcTessellatedFaceSet to which it applies the texture map.	X
3	TexCoords	IfcTextureVertexList	[1:1]	Indexable list of texture vertices.	X

Formal representations

XSD 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

	Liste von Indizes für Texturen
	Indexed Texture Map