Basic HTML version of Foils prepared March 4 1998

Foil 133 Lights - I

From VRML 2 Basic Concepts and Definitions CPS616 -- Information Track of CPS -- Spring Semester 98. by Zeynep Ozdemir, Rob Baker, Meryem Ispirli, Geoffrey C. Fox
Bakers Example - Collison, AudioClip, PointLight, Texture map, and Background(Collison, AudioClip, PointLight, Texture map, and Background)
1 Lights in a VRML world serve the same purpose as lights in real world. VRML provides three node types to control lighting: PointLight, DirectionalLight, and SpotLight.
2 A light can be placed anywhere in the VRML world but a viewer cannot see any kind of geometrical indication related to that light. A viewer can of course see the effect of that light in the VRML world.
3 Note lights only affect a Shape which has a non NULL Appearance node and a non NULL Material node within Appearance node
4 ambientIntensity reflects general affect of reflections as an approximation to exact rendering
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