Hi,
2013/1/2 Ji-Sun Kim <hidea...@vt.edu>
> Hi,****
>
> ** **
>
> Thank you for the response!****
>
> I have an additional question.****
>
> ** **
>
> >No the reason is quite simplistic, a need to show that W3DS can serve a
> huge model so ****
>
> >i use the terrain as huge model. If you can request GetTile and GetScene
> simultaneously,****
>
> >is client issue.
>
> ****
>
> ** **
>
> What do you mean by “client issue”?****
>
> What would be the requested URL if I want to request both “GetTile and
> GetScene” simultaneously?
>
****
>
> ** **
>
> I tried to send both requests with some combinations, but none of them
> worked.
>
W3DS is a service GetScene and GetTile are two diferent operations of that
service,
you cannot make an unique request with two operations. What i mean by
"client issue" is that the
client is the one responsible to make different request and merge them all
in a global scene (int the viewer).
A typically use case is to get the terrain of the scene by GetTile
operations (making several requests) and get the rest
of the scene by GetScene operations (also making several requests). Take a
look at Openlayers or Google Earth (Web Plugin) API.
****
>
> ** **
>
> I hope you let me know some example of requested urls.****
>
> ** **
>
> Happy New Year~****
>
> Kim.
>
Best regards,
Nuno Oliveira
> ****
>
> ** **
>
> *From:* Nuno Miguel Carvalho Oliveira [mailto:nmco51...@gmail.com]
> *Sent:* Friday, December 21, 2012 5:06 AM
> *To:* hideaway
> *Cc:* geoserver-devel@lists.sourceforge.net
>
> *Subject:* Re: [Geoserver-devel] W3DS Implementation up and running****
>
> ** **
>
> Hi,****
>
> 2012/12/20 hideaway <hidea...@vt.edu>****
>
> Hi,
>
> I found that one of your examples, Terrain 3D + 3D Buildings, is actually
> requesting "GetScene" only, while the example for Terrain 3D is requesting
> "GetTile".
>
> As far as I understand that GetTile is for terrain and GetScene is for 3D
> buildings, right?****
>
> ** **
>
> Well is not so black and white.****
>
> The choice between GetTile or GetScene operation lies on efficiency.****
>
> ** **
>
> The main use case for GetTile operation is to query terrains, but can be
> also used for query any kind of tiled layer.****
>
> GetScene operation can retrieve a whole scene, the scene can contain a
> terrain or anything else.****
>
> ** **
>
> Basically, the specification don't limit the content kind of the layer you
> can retrieve with GetScene or with GetTile operation,****
>
> she only put some restrictions on the layers properties, for example, a
> layer to be served by GetTile operation need to be tiled.****
>
> ** **
>
>
> Regarding this, I looked at your running geoserver and found that there are
> two different layers used for Terrain 3D, dem_tiled_3d and dem_3d. While
> dem_tiled_3d has tiles' information as well as geometry type, dem_3d has
> geometry type only.****
>
> ** **
>
> The layer dem_3d is the 3D mesh produced, so he can be seen as huge 3D
> model,****
>
> dem_tiled_3d is exactly the same terrain but partioned on tiles to be
> serve by GetTile operation.****
>
> He also have diferent LODs.****
>
> ** **
>
>
> The reason that dem_3d is not tiled is because you cannot request GetTile
> and GetScene simultaneously?
> Is it correct that W3DS spec. document suggests it?****
>
> ** **
>
> No the reason is quite simplistic, a need to show that W3DS can serve a
> huge model so ****
>
> i use the terrain as huge model. If you can request GetTile and GetScene
> simultaneously,****
>
> is client issue.
>
> ****
>
> ****
>
> Also, would you explain what geometry type is expected in the wkb_geometry
> field of the PostGIS tables (i.e., dem_3d and dem_tiled_3d) for use as a
> data source for a terrain model for the GeoServer W3DS?****
>
> ** **
>
> The kind of geometry is irrelevant, for this terrains i used MULTIPOLYGON
> but the new version ****
>
> of postgis support TIN and i think is better choice, but i don't know if
> Geoserver can handle it.****
>
> ****
>
>
> Thank you!
> Kim.****
>
> ** **
>
> Best regards,****
>
> ** **
>
> Nuno Oliveira ****
>
> ****
>
>
>
>
> --
> View this message in context:
> http://osgeo-org.1560.n6.nabble.com/W3DS-Implementation-up-and-running-tp4665127p5024158.html
> ****
>
> Sent from the GeoServer - Dev mailing list archive at Nabble.com.
>
>
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> _______________________________________________
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> https://lists.sourceforge.net/lists/listinfo/geoserver-devel****
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>
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