Lighting in CFX

[adamt]

In the CFX i am trying to light a scene which contains 25 slowly rotating 3d Screens.

I made them using a rectangle shape in a font, extruded as 3d Text in Action, then applied a video track as a diffuse texture to front and back. I have a simple grey texture for the extrude.

I want to light the extruded edges, but i do not want any light to affect the video screens. However, when i put lights in the scene, the screens all behave as if i'm lighting everything.  

How do i tell Smoke to play the videos (diffuse textures) to render at full brightness regadless of the lights in the scene?

thanks

Adam

[fred.warren]

Hello Adam,

As far as I know a light cannot shade only the extrusion of a geometry. One thing you could try is to create a Light, position it close to the rectangle extrusion and change the Light Type from Point or Spot to Directional. Then change the direction toward the extrusion. Finally, make a connection from your 3D Text Axis to the Light so it follows the rotation.

If you don't know about it already, there's a user group that is more active than these forums on Facebook: https://www.facebook.com/groups/flame.logik/

You probably would have more answer if you posted it there.

fred

[DavidCrites4631]

If you can keep your screen surfaces as separate objects, (you could keep each screen set and extrusion grouped with an axis). Using light linking, you could then use two sets of lights to light the objects independently, controlling the brightness of the screens and the extrusions independently.