Export Virtual Reality Modeling Language

There are two elements to the VRML exporter, the Deisgner VRML Export writes "Indexed face sets" to describe the vertices and faces in the object model, the Animator VRML Export writes a VRML file that places models in a scene adds a background and places viewpoints and paths that the camera follows.

Deisgner VRML Export

Use this option to write VRML (.WRL) versions of the part of the model in the Designerthat is currently selected. (Has its vertices selected). Use the Options to determine whether the VRML file should have indendentations, and the number of digits of accuracy used to write the VRML text. Any image maps may have an optional prefix that replaces their file root.

Indentation

Makes reading or editing the VRML file in a text editor much easier to do. However it also makes the files larger

URL Image Prefix

Each Image map is stored in with its full path stored in the model file. For VRML

Digits of Precision

Vertex coordinates are written in a floating point format, with this option you can choose how many digits of precision are used to write each coordinate. For example if 3 Digits of Precision are used the coordinates are written in the form 4.533, 16.732 etc.

Normals

A set of normals at vertices can be generated based on the angles of faces next to each vertex. Only faces that have their smoothing attribute set contribute to the vertex normals.

 

 

Important Notes

To build the most efficient VRML representation from a Model the following conventions should be noted and if possible followed:

 

Animator VRML Export

The animator export dialog offers a number of options some of whch are the same as the Designer options:

The additional animator options are:

 

VRML References

Silicon Graphics. vrml.sgi.com

VRML Resources, Sites etc. Virtual Reality - VRML

VRML Developer Content Developer