[osg-users] Newbie question #1: How to get

TANG Fangqin fqtang at gmail.com
Mon Sep 8 05:25:29 PDT 2008

Hi Karl,

You may use the LineSegmentIntersector to compute the intersections with
your model, then can get the coordinates of the corresponding point.

The codes may be like this:

 // Use the LineSegmentIntersector to compute intersections
 osgUtil::LineSegmentIntersector::Intersections intersections;
 if(viewer->computeIntersections(ea.getX(),ea.getY(), intersections))
  if(intersections.size() > 0)
    hitr =intersections.begin();

   // return the intersect point in world coordinate system
   vec = hitr->getWorldIntersectPoint();
   return true;
Hope this works.

Best regards,
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