IfcTextureVertex

Natural language names
deTextur - Vertex
enTexture Vertex
frSommet de texture
Change log
ItemSPFXMLChangeDescription
IFC2x3 to IFC4
    IfcTextureVertexMOVEDSchema changed from IFCPRESENTATIONDEFINITIONRESOURCE to IFCPRESENTATIONAPPEARANCERESOURCE.
Semantic definitions at the entity
Entity definition

An IfcTextureVertex is a list of 2 (S, T) texture coordinates.

NOTE  Definition according to ISO/IEC 19775-1 :

Each vertex-based geometry node uses a set of 2D texture coordinates that map textures to vertices. Texture map values ( ImageTexture, PixelTexture) range from [0.0, 1.0] along the S-axis and T-axis. However, texture coordinate values may be in the range (-∞,∞). Texture coordinates identify a location (and thus a colour value) in the texture map. The horizontal coordinate S is specified first, followed by the vertical coordinate T. If the texture map is repeated in a given direction (S-axis or T-axis), a texture coordinate C (s or t) is mapped into a texture map that has N pixels in the given direction as follows:
Texture map location = (C - floor(C)) × N
If the texture map is not repeated, the texture coordinates are clamped to the 0.0 to 1.0 range as follows:
Texture map location = N,     if C > 1.0,

= 0.0, if C < 0.0,
= C × N, if 0.0 ≤ C ≤ 1.0.
NOTE  Texture coordinates may be transformed (scaled, rotated, translated) by supplying a TextureTransform as a component of the texture's definition.
HISTORY  New entity in IFC2x2.
Attribute definitions
#AttributeTypeCardinalityDescription C
1CoordinatesIfcParameterValueL[2:2] The first Coordinate[1] is the S, the second Coordinate[2] is the T parameter value.X
Inherited definitions from supertypes
Entity inheritance IfcPresentationItem
Attribute inheritance
#AttributeTypeCardinalityDescriptionC
IfcPresentationItem
IfcTextureVertex
1CoordinatesIfcParameterValueL[2:2] The first Coordinate[1] is the S, the second Coordinate[2] is the T parameter value.X
Formal representations
XSD Specification
 <xs:element name="IfcTextureVertex" type="ifc:IfcTextureVertex" substitutionGroup="ifc:IfcPresentationItem" nillable="true"/>
 <xs:complexType name="IfcTextureVertex">
  <xs:complexContent>
   <xs:extension base="ifc:IfcPresentationItem">
    <xs:attribute name="Coordinates" use="optional">
     <xs:simpleType>
      <xs:restriction>
       <xs:simpleType>
        <xs:list itemType="ifc:IfcParameterValue"/>
       </xs:simpleType>
       <xs:minLength value="2"/>
       <xs:maxLength value="2"/>
      </xs:restriction>
     </xs:simpleType>
    </xs:attribute>
   </xs:extension>
  </xs:complexContent>
 </xs:complexType>
EXPRESS Specification
ENTITY IfcTextureVertex
 SUBTYPE OF (IfcPresentationItem);
  Coordinates : LIST [2:2] OF IfcParameterValue;
END_ENTITY;

Link to EXPRESS-G diagram EXPRESS-G diagram

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