Thanks Chris,

I actually compile osgEarth and osgGIS last week and played around with them a 
bit thinking I may go in that direction.  I was having trouble getting the vpb 
driver to work properly and the osgEarth vpb driver page even says:
"If at all possible, you should run osgEarth against the original source data 
instead of using this driver. You will get better performance with suffer fewer 
headaches. "
Are you suggesting replacing VPB with osgEarth entirely for my needs vs 
generating a VPB terrain file and combining it with osgEarth?



Chris 'Xenon' Hanson wrote:
> On 2/1/2012 7:02 AM, Ethan Fahy wrote:
> 
> > I had been building terrain complexes using osgdem using both the -d and -t 
> > flags to combine elevation and textures.  This works great when I have 
> > relatively low resolution.  I am now running into scenarios where I am 
> > using 1 meter lidar elevation data and want the maximum number of levels.  
> > This takes hours to generate, but I may be looking at the same area over 
> > and over.  However, the texture that I wrap onto that same are will be 
> > changing.  Do I need to run osgdem for each texture?  As far as I can see 
> > in the documentation there isn't any way to add texture to an existing 
> > osgdem-generated terrain complex; am I wrong?  I know that for each level, 
> > osgdem is breaking up the original texture and doing level of detail 
> > wrappings for it, so maybe it is impossible.  I may end up digging into the 
> > source code for osgdem to see what can be done but wanted to pose this 
> > question to the forum to see if anyone has any ideas about whether this can 
> > be done already or how feasible it is
  
> > 
> to 
> 
> > do this by changing the existing source code.  Thanks!
> > 
> 
> One word: osgEarth. http://osgearth.org/
> 
> It can drape new imagery onto VPB-built terrain models, or can just build the 
> terrain
> models on the fly with whatever imagery you want.
> 
> If you want pre-compiled binaries, they're available through my company's 
> support program.
> 
> -- 
> Chris 'Xenon' Hanson, omo sanza lettere.  http://www.alphapixel.com/
> Digital Imaging. OpenGL. Scene Graphs. GIS. GPS. Training. Consulting. 
> Contracting.
> "There is no Truth. There is only Perception. To Perceive is to Exist." - Xen
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> 
> http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
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