Hi Gianluca You say you wish to get the nearest intersection with the PolytopeIntersector...
I think the mistake is here: osg::NodePath& nodePath = /*picker->getFirstIntersection()*/closestIntersection.nodePath; If you want to have the nearest intersection, you must get the first intersection from the picker... osg::NodePath& nodePath = picker->getFirstIntersection(); We also use the Polytope Intersector in our Project. And it works great! Daniel Am Donnerstag, 10. Januar 2008 18.46:18 schrieb Gianluca Natale: > Hi all! > > > > I'm trying to use a osgUtil::PolytopeIntersector > > to find the closest object in my 3D scene graph (with OSG ver.2.2). > > I read on the OSG QSG that it should return the closest object > > as the first in the list of intersections. > > But it is not like that! > > I mean that the array of intersections correctly contains all of > > the objects hit by the intersection volume, > > but the first of those is not necessary the closest. > > BTW, it seems to be the object with the shortest node path. Might it be? > > > > Any idea of my mistake? > > > > Thank you in advance. > > > > Gianluca > > > > P.S.=attached is the source file (look into the class PickHandler, > > in the method pick; first I tried getting directly the first > intersection in > > the list, picker->getFirstIntersection(); then I tried to sort > > the intersection on my own. But I pick always the background > rectangle!) _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
