IfcSpecularHighlightSelect

Natural language names
Specular Highlight Select
Sélection de réflexion spéculaire
Semantic definitions at the type
Type definition

The IfcSpecularHighlightSelect defines the selectable types of value for specular highlight sharpness.

NOTE  The two select types relate to the different ways to specifiy the sharpness (or shininess) of the specular part of the reflectance equation. For each surface side style only one of the two methods is needed for calculating the specular part of the equation.

HISTORY  New select type in IFC2x2.

Select definition
TypeDescription
IfcSpecularExponent
IfcSpecularRoughness
Formal representations
XML Specification
 <xs:group name="IfcSpecularHighlightSelect">
  <xs:choice>
   <xs:element ref="ifc:IfcSpecularExponent-wrapper"/>
   <xs:element ref="ifc:IfcSpecularRoughness-wrapper"/>
  </xs:choice>
 </xs:group>
EXPRESS Specification
TYPE IfcSpecularHighlightSelect = SELECT (
 IfcSpecularExponent,
 IfcSpecularRoughness);
END_TYPE;

Link to EXPRESS-G diagram EXPRESS-G diagram

References  References: IfcSurfaceStyleRendering

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