I see. I guess that brings me to my next question: Can you use an overlay node on a terrain that is being paged? I was hoping to use the bounding box corner as an origin for grid lines that I draw over the terrain. I can probably find a work around to the bounding box issue, but if I can't lay those gridlines down on a TXP terrain because it is being paged then it would be good to know before I come up with another solution.
Thanks, Jason On 5/1/07, Robert Osfield <[EMAIL PROTECTED]> wrote:
Hi Jason, On 5/1/07, Jason <[EMAIL PROTECTED]> wrote: > > I'm getting very large numbers such as -3.4e+38 and 3.4.e+38. > The is an invalid bounding box (default constructed osg::BoundingBox), suggesting an empty subgraph. To test things I have one OpenFlight terrain of some mountainous region. > I have a TXP or the exact same area, but split into 4 tiles. When I grab the > corners of the FLT terrain I get world coordinates...something like 190,000. > When I do the same thing using the TXP I get the much larger numbers you see > above. > > Am I going about this the wrong way trying to grab the corners? > > Well your getting invalid bounding boxes so yes, you are going the wrong way about it. I'm not sure the best way though, the TXP database will be paged, so you won't actually know how big it is until you start loading data. Robert. _______________________________________________ osg-users mailing list [email protected] http://openscenegraph.net/mailman/listinfo/osg-users http://www.openscenegraph.org/
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