[Geojson] [Geowanking] [georss] simple 3D geocode for AR
Mike Liebhold
mnl at well.com
Mon Aug 31 21:47:08 PDT 2009
Sorry Chris, my previous posts tonight were in response to Ron Lake's
and others posts about relative coordinate systems.
I re-read your comments and see your suggestion of a local coordinate
system is kinda what I was seeking. ( thoughts about URI semantics are
a digression)
Anselm Hook wrote:
> > Chris Goad writes :
> > 3d modeling formalisms support this (and full GML does too), but
> GeoRSS, GeoJSON, and KML do not. This is probably an argument for
> going to represententations built for 3d in the first place for AR
> applications where local coordinates play a necessary role, but
> concievably there is a niche for our lightweight geo standards
> extended by addition of a transformation node.
>
> I concur. It's convenient to have an idea of a local coordinate
> system. I've always been slightly surprised by how the GML community
> ignored the work of the VRML community. Convenience concepts such as
> transform nodes, multiple instancing of geometry and behavior nodes
> make expressing ideas more succinct.
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