IfcSpecularHighlightSelect

IfcSpecularHighlightSelect

Definition from IAI: 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. It relates to the attributes:

in ISO10303-46 the attribute specular_exponent is given

in VRML97 the attribute shininess is given

For each surface side style only one of the two methods is needed for calculating the specular part of the equation

HISTORY: New type in Release IFC2x 2nd Edition.

EXPRESS specification:

TYPE IfcSpecularHighlightSelect = SELECT

(	IfcSpecularExponent, IfcSpecularRoughness);

END_TYPE;