NAME

DoTranspOrientExp − Create a transparent exponent primitive attribute object for orientation dependent transparency

SYNOPSIS

C:

DtObject DoTranspOrientExp(exponent)
DtReal exponent;

FORTRAN:

INTEGER∗4 DOTOE(EXP)
REAL∗8 EXP

DESCRIPTION

DoTranspOrientExp creates a transparent exponent primitive attribute object for orientation dependent transparency. 

Orientation dependent transparency means that the transparency of an object varies depending on the orientation of the object and the view direction.  The transparency can also vary across the object if it is not completely flat. 

The parameter exponent specifies the transparent exponent to be used for subsequent objects when the object is oriented so that the object normal is neither perpendicular nor parallel to the viewing direction.  See DoTranspOrientColor and DoTranspOrientIntens for details of the formulas that use the transparent exponent. 

To enable orientation dependent transparency, both DoTranspOrientSwitch <DOTOS> and DoTranspSwitch <DOTS> must be turned on. 

DEFAULTS

The default DoTranspOrientExp is 1.0. 

SEE ALSO

DoTranspOrientSwitch(3D), DoTranspOrientColor(3D), DoTranspOrientIntens(3D), DoTranspColor(3D), DoTranspIntens(3D), DoTranspSwitch(3D)

September 02, 1992