Try It! Experimenting with Lighting Effects

You may be wondering which type of light to use: spot light, directional light, or point light? Probably the best way to learn about different light types is to experiment with them.

  1. To get started, in Cosmo Worlds, open the file /usr/share/Insight/library/SGI_bookshelves/Help/books/CosmoWorlds_UG/Models/lights.wrl. This file contains three lights: a red point light, a blue spot light, and a green directional light.

  2. Open the Light Editor and press the Show All button to display the three light icons.

  3. Open the Viewpoint Editor and jump to viewpoint1, to show the following view:



  4. In the Light Editor, select the individual lights and turn them on and off to see their effects. Try moving them around, and use the direction joystick to adjust the direction of the directional light and the spot light.

  5. Try creating some new lights. Then adjust their direction, color, and radius (if applicable).

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