Hi Shayne, 

S2LR wrote:
>  A couple of questions so that I have a clear understanding...
> 
> 1) Why would you want to have the lower LODs available for doing collision 
> tests? You always want the highest LOD for doing intersection tests with the 
> terrain. 


I am trying to compute two functions. First function will find height of the 
terrain for a given lat/lon value. Second function will find all the 
intersection points of a ray with the terrain. Therefore I need to know all 
lower LODs of the terrain.


> 2) What are you using for doing the LOS check between the line and the 
> terrain? Are you using your code snippet that you posted earlier or are you 
> using osgSim?


I am using osgSim. I am checking all the intersection points with the terrain 
between two points. So, I can not get all intersection points If osg does not 
read lower LODs of the terrain. I tried moving camera to the area of the these 
points in the view based sample and Osg could read all lower LODs in this area, 
I got all the intersection points of a ray.

I hope you understand my problem and there is a solution for it in the Osg.

Regards

------------------
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http://forum.openscenegraph.org/viewtopic.php?p=53745#53745





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