Hey guys,

I am quite new to OSG and i am a bit unsure if i have the right approach.
I like to use osgEarth or VPB to use the actual elevation data of the earth in 
a really high resolution and then draw a heightmap out of it. This heightmap 
should be possibly animatable. I like for example let areas blink or fade. 
change colors depending on elevation or user settings in realtime.
Beside that I like to draw paths onto my elevation map like a circle and get 
elevation data of my height map at the position along the circle. It would also 
be great to manipulate the circle size and position. I think for the 
manipulation I can use osgManipulator class. But for the measurement I am not 
sure what i should use.

I am not sure how customizable VPB or osgEarth are and if it is possible to 
change all the environment variables which are set by default?
For example only use a 2d like view of the earth from above like in google maps.

So i like to ask you for some hints to point me into the right direction.
 
- Which should I use for my needs VPB or osgEarth?
- what is the best data source for my needs? ( I like really high resolution 
data.  I did some test with material which was really low resolution.)
- How can i draw a circle and measure the elevation data along the circle?
- What is the best way to animate my heightmap texture? Is it possible to 
animate the vertex color in this context of vpb and osgEarth?

Thanks! :)

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http://forum.openscenegraph.org/viewtopic.php?p=59565#59565





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