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-- File: Vrml_DirectionalLight.cdl
-- Created: Wed Feb 12 11:06:15 1997
-- Author: Alexander BRIVIN
-- <brivin@meteox.nizhny.matra-dtv.fr>
---Copyright: Matra Datavision 1997
class DirectionalLight from Vrml
---Purpose:defines a directional light node of VRML specifying
-- properties of lights.
-- This node defines a directional light source that illuminates
-- along rays parallel to a given 3-dimentional vector
-- Color is written as an RGB triple.
-- Light intensity must be in the range 0.0 to 1.0, inclusive.
uses
Color from Quantity,
Vec from gp
is
-- defaults :
Create returns DirectionalLight from Vrml;
-- myOnOff(Standard_TRUE)
-- myIntensity(1)
-- myColor(1 1 1)
-- myDirection(0 0 -1)
Create ( aOnOff : Boolean from Standard;
aIntensity : Real from Standard;
aColor : Color from Quantity;
aDirection : Vec from gp )
returns DirectionalLight from Vrml;
SetOnOff ( me : in out; aOnOff : Boolean from Standard );
OnOff ( me ) returns Boolean from Standard;
SetIntensity ( me : in out; aIntensity : Real from Standard );
Intensity ( me ) returns Real from Standard;
SetColor ( me : in out; aColor : Color from Quantity );
Color ( me ) returns Color from Quantity;
SetDirection ( me : in out; aDirection : Vec from gp );
Direction ( me ) returns Vec from gp;
Print ( me; anOStream: in out OStream from Standard) returns OStream from Standard;
---C++: return &
fields
myOnOff : Boolean from Standard; -- Whether light is on
myIntensity : Real from Standard; -- Source intensity (0 to 1)
myColor : Color from Quantity; -- RGB source color
myDirection : Vec from gp; -- Illumination direction vector
end DirectionalLight;
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