Light Fixture Modeling... Casting Shadows on Itself

[saeborne]

Hi all,

Let's say I'm modeling a light fixture... A decorative pendant, as an example.

I set the Light Source Definition as a point source, with a spherical distribution, located in the center (where the lamp would be). Then I model Solid Extrusions to represent the decorative fins, cones, baffles, whatever the light fixture may have.

Here's where I run into trouble... When I render an image, the light fixture casts shadows from itself!

Is there a way to specify that certain parts of geometry, or certain components, do not cast shadows?

Thanks in advance.

Bryan

[sergej.vonbagh]

Has anyone solved this problem. Using IES that casts light for example up and down with revit objects is quite impossible now.