[osg-users] osgUtil::LineSegmentIntersector performance issues

Robert Osfield robert.osfield at gmail.com
Tue Dec 4 09:21:34 PST 2018

Hi Andrea,

The osg::KdTree is design for the purpose of accelerating intersection
testing.  What you need to do is run the KdTreeBuilder visitor on your
subgraph to generate KdTree for each osg::Geometry in the subgraph, these
then get assigned automaticaly to each osg::Geometry as a Shape.  The
intersection traversals then automatically detect the KdTree when available
and use it instead of the raw primitive data into the Geometry.

I would also strongly recommend upgrading 3.6.3, it even contains some nice
improvement for KdTree building and intersections.

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