Basic HTML version of Foils prepared April 6 1997

Foil 171 Fields in Viewpoint Node - I

From VRML 2 Basic Concepts and Definitions CPS616 -- Information Track of CPS -- Spring Semester 97. by Zeynep Ozdemir(Geoffrey C. Fox)
position field specifies a 3-D coordinate for the location of viewpoint in the current coordinate system.
orientation field specifies a rotation axis and angle with which to rotate the viewpoint.
fieldOfView field specifies an angle(in radians) indicating the spread angle of the viewpoints viewing-volume frustrum.
  • The range of the world that is visible to VRML viewpoint can be illustrated by a tapered box with the narrow end at the viewpoint and the wide end at the horizon (called a frustrum).
  • Any shape that falls within the box is visible. As we decrease the field of angle, we taper the box, making it more narrow and decrease the range of the world that is visible.

Northeast Parallel Architectures Center, Syracuse University, npac@npac.syr.edu

If you have any comments about this server, send e-mail to webmaster@npac.syr.edu.

Page produced by wwwfoil on Sun Mar 15 1998