Hi Antoine,
Hello Sebatian,
I was finally able to test your suggestion and it does work fine except that it
does return the primitives, not the vertices composing the primitives
(triangles for me).
Of course you can retrieve the vertices from the primitives (which I am
currently doing), but selecting primitives and selecting vertices is not
exactely the same.
Simply use the Intersection::indexList. It contains the vertex
indices.The intersection has really all you'll ever need to select the
contributing vertices. See the osg-CookBook for a reference example.
What I understand is that if I want to draw triangles but select exact vertices
then I need to handle 2 different geometries, one with triangles for drawing
and one with points for selection (and using your suggested technique with
masks). Is that right?
No, you can use one graph and use a Polytope-intersector since
point-line collisions are rare to practically impossible. I simply
wanted to show an alternative, when using different pick/render-geometries.
Cheers
Sebastian
PS: at the time being I can live with the primitives / vertices approximation,
but I want to get to the bottom of it eventually.
Kind regards,
Antoine.
------------------
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http://forum.openscenegraph.org/viewtopic.php?p=71724#71724
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