Basic HTML version of Foils prepared March 4 1998

Foil 167 VRML97 Level Of Detail LOD Node - 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
Example and Definition of Levelof Detial LOD Node for Foil 167(Example and Definition)
Terrain Renderer in VRML is a good example of use of LOD Node
This group node is used to allow applications to switch between various representations of objects automatically.
The children of this node typically represent the same object or objects at varying levels of detail, from highest detail to lowest.
The specified center point of the LOD is transformed by the current transformation into world space, and the distance from the transformed center to the world-space eye point is calculated.
If the distance is less than the first value in the ranges array, then the first child of the LOD group is drawn.
If between the first and second values in the ranges array, the second child is drawn, etc.

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