[postgis-users] X3d export

[Paragon Corporation]

 Thanks Milo and Randy,

This is all along the line of what we are trying to do and I'm learning a
lot from this thread.  I checked out vterrain a couple of years ago and it
was still in its infancy then.  I'll have to take another look at that.

Coincidentally I noticed James Fee had a blog entry on a slightly related
topic -  BIM  (Building Information Modeling) and gbXML
http://en.wikipedia.org/wiki/Green_Building_XML

http://www.spatiallyadjusted.com/2008/06/04/bim-and-gis/

http://en.wikipedia.org/wiki/Building_Information_Modeling

Which sounds along the lines of what we are working on for a particular
niche engineering market.

What does BIM have to do with all the below?  Seems related but not sure in
what way and still unclear what is behind it aside from CAD.

Thanks,
Regina

-----Original Message-----
From: postgis-users-bounces at postgis.refractions.net
[mailto:postgis-users-bounces at postgis.refractions.net] On Behalf Of Milo van
der Linden
Sent: Sunday, June 08, 2008 5:33 PM
To: rkgeorge at cadmaps.com; PostGIS Users Discussion
Subject: Re: [postgis-users] X3d export

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As co-owner of a dutch company called 3DSite, we have a 3D front end that
works in conjunction with webservices that parse vrml to our privately held
delphi front-end. We are facing a lot of challenges with our product and
therefor have been watching open source 3D GIS development for the past 4
years. It is encouraging to see that work is being done at serverside and I
am eager to participate in this work!

One of the main challenges is finding a front-end for x3d spatial data that
has good performance, is cross platform and can be fine tuned to a
functional area of interest.

One of the best front-ends we came across is Ben Discoe's Virtual Terrain
Project (www.vterrain.org). And my gut feeling tels me the best thing to do
would be to find synergy between VTP and x3d extensions to postGIS. In that
way, it might speed up creating a user-base and create a broader community.

I cannot wait to see more about this topic and intend to draw a line into
the VTP community to see if they might be willing to find a connection to
postGIS x3d.

Randy George wrote:
> Hi,
> 
> 	I'm hoping this will generate more interest in supporting 
> Camptocamp's TIN and PolyhedralSurface extensions in future PostGIS 
> releases.

I hereby commit to supporting this!

This is really quite in line with the mapping/GIS origins of
> PostGIS, especially as the mapping world encroaches more into virtual 
> world technologies. X3D, KML, Google Skp, and MS WPF are all pushing 
> mapping into the virtual world space.
> 
> 	Terrain models with subsampled pyramids can work pretty well using 
> tiff raster models outside of PostGIS. OGC WMS or WCS layers seem 
> appropriate for this. But I'm thinking spatial features like 
> buildings, pipelines, industrial facilities need more organizing and 
> these manmade features would work better with combined RDBMS/GIST type 
> queries to manage the multitude of surfaces in even a moderately complex
building.
> 
> 	I guess 3D CAD models have a long history, but lack an OSS
community. 
> OSS development in the GIS stack is fairly advanced and PostGIS could 
> work pretty well for architectural models considering their spatially 
> fixed anchors. For instance a nice 3D model of the NYC subway system 
> could coexist very well in a GIS framework as polyhedralsurface 
> elements. It is all spatial in the end, which is why GIS tends to 
> absorbs CAD rather than the other way around.
> 
> Here are some links I find fascinating as far as mapping and virtual
worlds:
> 	http://www.google.com/earth/plugin/examples/milktruck/  
> 	http://blogs.msdn.com/msroboticsstudio/
> 
> randy
> 
> -----Original Message-----
> From: postgis-users-bounces at postgis.refractions.net
> [mailto:postgis-users-bounces at postgis.refractions.net] On Behalf Of 
> Jean David TECHER
> Sent: Sunday, June 08, 2008 9:49 AM
> To: postgis-users at postgis.refractions.net
> Subject: [postgis-users] X3d export
> 
> U've got the link
> 
> http://postgis3d.blogspot.com/
> 
> ===================
> Jean David TECHER
> 06 60 46 85 05
> 04 99 77 17 87
> ===================
> 
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