IfcSpecularExponent

BACnet MVD

#### IfcSpecularExponent

Natural language names

| Specular Exponent
| Exposant spéculaire

##### Semantic definitions at the type

Type definition

The IfcSpecularExponent defines the datatype for exponent determining the sharpness of the 'reflection'. The reflection is made sharper with large values of the exponent, such as 10.0. Small values, such as 1.0, decrease the specular fall-off.

IfcSpecularExponent is of type REAL.

> NOTE The datatype relates to the definition of specular_exponent in ISO 10303-46 entity surface_style_reflectance_ambient_diffuse_specular.

> HISTORY New type in IFC2x2.

##### Formal representations

XML Specification
`<xs:simpleType name="IfcSpecularExponent">
<xs:restriction base="xs:double"/>
</xs:simpleType>
`
EXPRESS Specification
`TYPE IfcSpecularExponent = REAL;
END_TYPE;

EXPRESS-G diagram

`

References: IfcSpecularHighlightSelect

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