[osg-users] Dynamical loading of resources

Sebastian Messerschmidt sebastian.messerschmidt at gmx.de
Mon Aug 14 07:46:25 PDT 2017

Hi Joachim,
> Hi,
> I was tasked with writing a visualizer for large 3D areas, the kind of areas that may not fit into RAM, either because they are too large, or because the RAM on the machine is not large enough ;).
> I am new to OSG, this is my first post to the forum (hello, guys :)!). I was wondering how to perform out-of core handling of the 3D resources I intent to render. Its not possible for me to load everything and then start rendering, i need to constantly load new parts of the environment and unload geometry that is out of view.
That is where PagedLOD comes into play. It allows for background loading 
of tiles.
> So I would like to know, is there any mechanism in OSG (or OSG Earth) which already supports this? Or would I have to implement it myself? Either way, I would be very happy if one of you could give me a rough explanation of how to approach this problem with OSG.

See the osgPagedLod example for reference.
If you need a resolution-pyramid approach, VPB(VirtualPlanetBuilder) can 
generate multiscale data for paging from various sources.
Sorry for just giving you pointers, but a short answer might be better 
than none ;-)
> Thank you, I appreaciate yout help!
> Cheers,
> Jey
> ------------------
> Read this topic online here:
> http://forum.openscenegraph.org/viewtopic.php?p=71409#71409
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