Hi Martin,
The event picker doesn't take a nodemask to traverse like the nodevisitor, so
it returns all hits - visible or not.
I made a small mod to the IntersectorVisitor to take a traversal mask and only
visit those nodes with it set.
It needs a bit of cleaning up to meet OSG standards - I will post it later
today.
Actually, since the IntersectionVisitor is a NodeVisitor, you can set a
traversal mask on it. Just do:
osg::ref_ptr<osgUtil::LineSegmentIntersector> intersector =
new osgUtil::LineSegmentIntersector( /*...*/ );
osgUtil::IntersectionVisitor iv(intersector.get());
iv.setTraversalMask(/* the mask we want it to use */);
camera->accept(iv);
For example, if you have:
osg::Node::NodeMask IS_VISIBLE_MASK = 0x1;
then if you don't want invisible nodes to be pickable do:
iv.setTraversalMask(~IS_VISIBLE_MASK);
~ is the bitwise NOT operator, and ~IS_VISIBLE_MASK is the same as
0xFFFFFFFF & ~IS_VISIBLE_MASK . You could also make masks for both
behaviors:
osg::Node::NodeMask IS_VISIBLE_MASK = 0x1;
osg::Node::NodeMask IS_PICKABLE_MASK = 0x2;
// Pick nodes only if the IS_PICKABLE_MASK bit is set.
iv.setTraversalMask(IS_PICKABLE_MASK);
// See nodes only if the IS_VISIBLE_MASK bit is set.
camera->setCullMask(IS_VISIBLE_MASK);
Then setting a node's mask to 0x0 would make it not visible and not
pickable, and you could have a node whose mask would be 0x1 to be
visible but not pickable, and the opposite too.
Hope this helps,
J-S
--
______________________________________________________
Jean-Sebastien Guay jean-sebastien.g...@cm-labs.com
http://www.cm-labs.com/
http://whitestar02.webhop.org/
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