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Text File
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1996-09-02
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3KB
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77 lines
An Overview of VRML
What is VRML?
VRML is an acronym for "Virtual Reality Modeling Language". It is a
file format for describing interactive 3D objects and worlds to be
experienced on the world wide web (similar to how HTML is used to
view text). The first release is called VRML 1.0.
The vast majority of VRML files are VRML 1.0 and comprise mainly
of 3D models converted directly from other file formats, DXF, 3DS
Lightwave and many others. The number of people creating models and
worlds is growing rapidly though, and 'genuine' VRML files are
starting to appear.
The development of the VRML specification has been moving
at a fast pace for more than a year and the format
for version two (VRML2.0) has now been established (4Aug96).
The much quicker Binary version of the fileformat
based on the Apple Metafile is still under development.
VRML 2.0 adds significantly more interactive capabilities and
allows for richer behaviours including animation, motion physics
with Java etc. Most VRML browser developers will be embarking
on the task of adding the VRML 2.0 features to their products.
See the San Diego Supercomputer Center's VRML Repository or
Silicon Graphics' VRML site for more information.
http://www.sdsc.edu
Whether you are an enthusiast, an artist, designer, hobbyist, developer
the VRML Book to have is:
The VRML SourceBook.
by Andrea L. Ames.
Published by Wiley & Sons inc.
ISBN 0-471-14159-3
This book contains all the info you need to understand VRML and create
VRML files using textfiles. The example files contained in
the book can be downloaded from Wiley's site:
http://www.wiley.com/compbooks/
The VRMLEyes product and the VRML Source Book together with
HTML pages of all the examples and files are available as a
product from Aspex Software.
A FREQUENT QUESTION!
Q. My VRML file is broken or looks very dull!
A. There are loads of VRML converters and Viewers out
there in the PC World, but not many editors.
So there are lots of people out there busily converting
from other 3D formats into VRML.
This means that a great many of the VRML files found
on the internet are simply files containing the
coordinate information for creating the 3D Mesh for
the model. The resulting model is more often
than not a dull monocolour shape.
Another problem is that during the rapid development of VRML
a number of platforms managed to sneak various little tweaks
into the format. The result is that some files which can be easily
read by Workstations (because these stations created
the original file), can't be read by anyone else.
These problems are temporary and will lessen greatly as more 3D
designers, artists and enthusiasts upload the real thing.