VRML and XML (Editors)
cbullard at hiwaay.net
Sat Jan 17 00:47:18 GMT 1998
Michael Rose wrote:
Michael Rose writes:
> Len Bullard writes:
> >Building a production-worthy useful language
> >is not a theoretical exercise however. For an XML version of
> >VRML to be useful, there must be some requirements for it which
> >ISO VRML (VRML 97) does not meet.
> 'Different views of the same information' is applicable here. We're
> writing some 'avatar generation' software where users can make their own
> avatars. In the first instance the avatars will be 2D, with the later
> possibility of 3D and VRML avatars. The obvious choice is to have an XML
> based avatar description with can then be viewed via either 2D or VRML
> rendering depending on which XSL is used.
> Is anyone doing anything similar?
Not in XML. Producing 2D and 3D from XSL is a neat idea.
Are you working with H-ANIM spec?
The issue of domain-specific editors is a
hot one in VRML for sure.
VRML is scene description language consisting of
a set of geometric primitives, indexed face sets,
extrusion, texture, script nodes, routes, anchors, etc.
A file contains multiple hierarchies of group types
(eg, groups, transforms, etc) in nested coordinate
spaces. This is very good for describing the world
generically, but at a level of abstraction not
quick to learn or use. It requires a critical
skill of geometric decomposition and assembly
that takes considerable practice to master.
Higher level editors are needed. Yet, I really
don't want to have to keep integrating multiple
editor sources. An editor that can be initialized
for diffent types of work in VRML would be
a very good thing. Personally, I like the
V-Realm Builder tree interface combined with
the visualization and dialogs. That works
very easily. XML can be a way to
create differnt tree types so that not only
avatar makers, but many kinds of higher level
objects can be created in the same interface.
One big bonus of SGML and I hope XML tools
are DTD-enabled editors. But the one level
of abstraction typical of DTD design of the
eighties and early nineties has been a limit
on what we could express.
What is the status of architectural forms in XML
My question: this kind of editor depends on
a relatively fast rendering response as
the editing tools are used. I wonder how
much that slows down if XML editors are
used with VRML/OpenGL rendering systems.
xml-dev: A list for W3C XML Developers. To post, mailto:xml-dev at ic.ac.uk
Archived as: http://www.lists.ic.ac.uk/hypermail/xml-dev/
To (un)subscribe, mailto:majordomo at ic.ac.uk the following message;
To subscribe to the digests, mailto:majordomo at ic.ac.uk the following message;
List coordinator, Henry Rzepa (mailto:rzepa at ic.ac.uk)
More information about the Xml-dev