Basic HTML version of Foils prepared 7 October 97

Foil 11 VRML - Language characteristics

From VRML and Use of Databases as backend and Application to GIS ARL Database Tutorial -- February 98. by Krzysztof Walczak
Basics:
  • VRML defines a set of objects that can describe 3D graphics - nodes.
  • Nodes are arranged in hierarchical structures - scene graphs
  • Scene graphs define the ordering for the nodes - the state of the scene graph depends on the earlier and affects later nodes.
  • Separators can limit the effects allowing parts of the scene to be isolated from other parts.
Nodes are characterized by the following information:
  • Kind of object: cube, sphere, texture map, transformation, etc.
  • The parameters that describe the object,
  • The optional name of the object,
  • For some types of nodes - group nodes - the child nodes can be specified

© on Mon Oct 13 1997