Hi Sanat,
My suggestion is to design a CylinderIntersector yourself and add it
to the IntersectionVisitor. The most important methods to override
will be:
// Make a clone of the intersector for the visitor to use
internally, don't forget to set clonedIntersector->_parent = this
virtual Intersector* clone( osgUtil::IntersectionVisitor& iv );
// Check if a node is intersected with the cylinder and return
true if we should continue traversing the subgraph
virtual bool enter( const osg::Node& node );
// Check if a drawable is intersected with the cylinder and record
the results in any forms you want (like an Intersection list)
virtual void intersect( osgUtil::IntersectionVisitor& iv,
osg::Drawable* drawable );
Then you may make use of some simple math formulas instead of adding a
lot of planes.
Have a look at the implementation of LinesegmentIntersector will be of help.
Cheers,
Wang Rui
2011/3/4 Sanat Talmaki <sanat.sch...@gmail.com>:
> Hi,
>
> I want to test for intersection in my scene using a cylinder instead of a
> line segment.
>
> For example if my object is on a terrain I want to highlight all features
> that are within an imaginary cylinder around my object.
>
> I read about polytope intersector but it seems as though that is for planes
> only or can I get cylinder intersector from there as well ?
>
> Any tips on how I can get started will be much appreciated.
>
> Thanks!
>
> Sincerely,
> Sanat.
>
> ------------------
> Read this topic online here:
> http://forum.openscenegraph.org/viewtopic.php?p=37298#37298
>
>
>
>
>
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