Trajce Nikolov NICK wrote:
> Maybe better idea then these email iterations is to write us what is your 
> goal with this code since I see no smart logic in there (sorry :-) )
> 

OK, I try to explain in detail.

The object I visualize on 3D is a road. A road can have different "materials": 
asphalt, curbs, oil, puddles, obsacles ... The road surface including materials 
is defined in a core road structure. I drow the 3D road base on the data stored 
in the core road structure. There each road element (=triangle) is associated 
to a "material" object. For that reason I thought to use different colors, one 
for each material. So, asphalt = dark grey, curbs = red/white, oil = dark 
green, puddle = brown ...
The user, after loading a road, can change the "material" definition. So 
picking on the road surface he can add a puddle in the middle of the road. So 
the picked triangles must be shown in brown then.
In addition I have to update the core road structure accordingly.

This is the scenario. Hope this is clearer now.

Thanks Nick and Sebastian for the time spent, really!
Gianni

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Read this topic online here:
http://forum.openscenegraph.org/viewtopic.php?p=68780#68780





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