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)
1 Terrain Renderer in VRML is a good example of use of LOD Node
2 This group node is used to allow applications to switch between various representations of objects automatically.
3 The children of this node typically represent the same object or objects at varying levels of detail, from highest detail to lowest.
4 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.
5 If the distance is less than the first value in the ranges array, then the first child of the LOD group is drawn.
6 If between the first and second values in the ranges array, the second child is drawn, etc.
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