Natural language names
Reflectance Method Enum
Enumération des méthodes de réflexion
Semantic definitions at the type
Type definition

The IfcReflectanceMethodEnum defines the range of different reflectance methods available.

HISTORY  New enumeration type in IFC2x2.
Enumeration definition
BLINNA reflectance model providing a smooth, slightly shiny appearance.
FLATA reflectance model providing a constant colour. This model ignores the effect of all light sources.
GLASSA reflectance model that supports an approximation of glass-like materials that have both reflective and transmissive properties.
MATTA reflectance model providing a dull matte appearance.
METALA reflectance model providing a specular metallic appearance.
MIRRORA reflectance model that supports secondary mirrored views through ray tracing.
PHONGA reflectance model conforming with the Phong model in which reflections are greatest in the `mirror' direction of a surface opposite the viewing direction with respect to the surface normal.
PLASTICA reflectance model providing a specular effect which is similar to the Phong model.
STRAUSSA reflectance model for metallic and non-metallic appearance based on a limited set of control parameter.
Formal representations
XML Specification
 <xs:simpleType name="IfcReflectanceMethodEnum">
  <xs:restriction base="xs:string">
   <xs:enumeration value="blinn"/>
   <xs:enumeration value="flat"/>
   <xs:enumeration value="glass"/>
   <xs:enumeration value="matt"/>
   <xs:enumeration value="metal"/>
   <xs:enumeration value="mirror"/>
   <xs:enumeration value="phong"/>
   <xs:enumeration value="plastic"/>
   <xs:enumeration value="strauss"/>
   <xs:enumeration value="notdefined"/>
EXPRESS Specification
TYPE IfcReflectanceMethodEnum = ENUMERATION OF (

Link to EXPRESS-G diagram EXPRESS-G diagram

References  References: IfcSurfaceStyleRendering

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