Light Panel Widget.

Uses Motif Widgets ( Choice, Toggle, Scale, Push ) to adjust lighting model properties.

Widget Name (Widget Type) --- description of function

• Light Source (Toggle)
  -- on/off switch for primary white light source.
• 2nd Light Source (Toggle)
  -- on/off switch for a second independent white light source.
• Light X/Y/Z (Scale)
  -- adjust vector direction of the primary light source (2nd Light X/Y/Z works just the same).
• Light I (Scale)
  -- adjust relative intensity of the primary light source (2nd Light I works just the same).
• Depthcue Fog (Toggle)
  -- toggle `depthcueing' simulated by fog.
• Fog Mode (Choice)
  -- set the fog equation as Linear, Exponential, or Exp2.
• Fog Density (Scale)
  -- adjust the fade into background for the depthcueing effect.
• Ambience (Scale)
  -- adjust the overall ambient background level, this is multiplied by each material's ambient RGB.
• Red/Green/Blue Background (Scale)
  -- adjust RGB components of the screen background color.
• Close Panel (Push)
  -- dismiss the panel
• Panel Help (Push)
  -- show this help screen

Hints:

Fog effect depends on both the slab thickness and Z-coordinate (see Model Transformation ).

Also see other types of and general information on Control Panels.