Hi Robert (and all), I am constructing the intersectvisitor on the stack each time I call my function which tests terrain height. Each time something moves, I test the terrain height this way and place it on top of the terrain. I am getting a whole lot of empty hitlists when it doesn't make much sense. Is this because I am asking for the hitlist too soon? Could it be that the operation is non-blocking since it is a nodevisitor? The strange thing is that it looks ok, so for the majority of frames it works properly.
Thanks in advance, John -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Robert Osfield Sent: Sunday, July 02, 2006 4:40 PM To: osg users Subject: Re: [osg-users] Node Visitors and Repeated Tests Hi John, I typically contruct the IntersectVisitor on the stack when I need it, rather than reusing the same one over and over again. Robert. On 6/30/06, Argentieri, John-P63223 <[EMAIL PROTECTED]> wrote: > > > > In our project, every entity is placed on a terrain. This updating is > performed by using an intersectvisitor. I have a few questions about > the most optimal way to perform the elevation tests etc. Should I > create a new intersect visitor each and every time I test the elevation of the terrain? > If I am not mistaken, I have to add a new line segment to the > intersect visitor at every place I am interested in finding the elevation and normal. > Can I then remove these line segments? The problem that I am having > with the current way it is implemented is that sometimes, the hitlist > is coming back as empty. > _______________________________________________ > osg-users mailing list > [email protected] > http://openscenegraph.net/mailman/listinfo/osg-users > http://www.openscenegraph.org/ > > _______________________________________________ osg-users mailing list [email protected] http://openscenegraph.net/mailman/listinfo/osg-users http://www.openscenegraph.org/ _______________________________________________ osg-users mailing list [email protected] http://openscenegraph.net/mailman/listinfo/osg-users http://www.openscenegraph.org/
