[X3D-Public] 3D Databases?

[Alan Hudson]

Dave A wrote:
> I'm wondering if anyone is familiar with true 3D databases. Meaning
> actually stores vertices and materials, all that, so it can serve up a 
> model.
> 
> I know there are some out there, most 'spatial' ones I've seen are really
> more geographic than geometric. Would be cool to query
> 'get by view frustum' or 'get by material' or 'get bounding box' 'get 
> convex hull' etc. etc.
> 
> Is Oracle really the only one that does this? Right Hemisphere has 
> something but
> it too is too expensive for me.
> 
beyond Oracle I think Postgres is the only one.  I have not used the 
Postgres stuff but I have heard they have a spatial extension.  Not true 
3D but useful in some cases.

Xj3D and Aviatrix3D are very well suited for creating that layer overtop 
a database.  Extensive routines for bounds intersection on a server. 
I'd implement a scenegraph index that had all the objects in it.  Then 
you could support spatial queries efficiently.  Extend SQL with a few 
concepts and you'd have it together.

-- 
Alan Hudson

President Yumetech, Inc.                               www.yumetech.com
206 340 8900 ext 111

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