Lighting Systems

Prism applications use Lighting Systems for many of their OpenGL graphics widgets. These lighting systems use up to 8 light sources. The light sources are "directional", as opposed to "positional" (see OpenGL documentation).

In some cases, the lighting systems can be edited by the user. Specifically, the direction vector and light source color are editable.

• Check to On/Off box to turn on a light source.
• The values of x-dir, y-dir, and z-dir define a direction vector for the directional light source.
• Press the Reset button to return to the light source's default parameters (application dependent).
• The lighting system parameters can be saved to the workspace file so that the visual appearance of the views are maintained.