Basic HTML version of Foils prepared March 4 1998

Foil 181 Viewpoint Node - II

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
Definition and 2 Examples of Viewpoint Nodes for Foil 181(Definition and Examples)
description field specifies a text string used to describe the viewpoint.
Viewpoints are kept in a stack and the top of the stack is current viewpoint.
  • Background, Fog, NavigationInfo also are done in this stack fashion
When a jump (is TRUE) viewpoint is placed on top of the viewpoint stack, the viewer automatically jumps to that Viewpoint node's position, orientation, and field of view.
When a no-jump viewpoint is placed on top of the viewpoint stack, by selecting it from a browser's menu for example, the user retains his or her current view.
In any case, the viewer's movements are now relative to the new current viewpoint node and to the coordinate system in which that viewpoint is built.

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