[osg-users] Implement tile-based, large scale 2d map rendering

Sebastian Messerschmidt sebastian.messerschmidt at gmx.de
Thu Jul 28 01:13:01 PDT 2016


Hi Bruno,
> Hello,
>
> I've been investigating that source code but can't seem to find where 
> the 2D tiled/LOD image rendering is handled. Can you give me some 
> insight please?
> Thank you
>
> 2016-07-06 9:43 GMT+01:00 Sebastian Messerschmidt 
> <sebastian.messerschmidt at gmx.de <mailto:sebastian.messerschmidt at gmx.de>>:
>
>     Am 06.07.2016 um 10:31 schrieb Christian Buchner:
>>     Isn't OsgEarth focused on meshed 3D terrain mostly? That might
>>     incur some unnecessary overhead when displaying this in a 2D
>>     projection top view.
>     That's only half the truth. It can be used for tile based
>     map-projections too.
>
Look at the map examples. I don't have the source code in front of me, 
but there where plenty of flat-map examples streaming in map-data with 
different resolutions (aka LOD).

Cheers
Sebastian

>
>     Cheers
>     Sebastian
>>
>>
>>     2016-07-05 23:33 GMT+02:00 Jason Beverage
>>     <jasonbeverage at gmail.com <mailto:jasonbeverage at gmail.com>>:
>>
>>         Check out http://www.osgearth.org, it likely does everything
>>         you're trying to do.
>>
>>         Jason
>>
>>
>>         On Tue, Jul 5, 2016, 5:18 AM Bruno Oliveira
>>         <bruno.manata.oliveira at gmail.com
>>         <mailto:bruno.manata.oliveira at gmail.com>> wrote:
>>
>>             Hello,
>>
>>
>>             can someone give me some hints on where to start
>>             implementing a tile-based, large scale 2d map renderer?
>>             This is similar to, for instance, Google maps, i.e., it
>>             only shows the visible tiles, and increases scale as I
>>             zoom in.
>>
>>             I have a large tiled 2d raster map (e.g. 200k x 200k
>>             pixels) stored in hard disk. Can I add these tiles to a
>>             PagedLOD engine?
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>>
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