Hi,
> You can't computationally intersect infinitely thin lines with with > infinitely thin line segments so what you are asking specifically > isn't possible. We use an algorithm with a "intersection distance" parameter : if minimum distance between the two lines (or segment, or line/segment) is below this minimum, we consider that the lines intersect. It acts like intersecting cylinders (infinite or not) with a little diameter. This algorithm is currently used by several scientific softwares developped by my company. > What exactly you trying to achieve will affect what approach you will want to > take. I'm trying to extends LineSegmentIntersector with new features. There are different goals : - personal training - test our algorithm in a OSG context (actually all rendering is done in pure OpenGL, all computation in standard C++) - use this algorithm on a standard OSG scene to do some computations (like in our actual software) - maybe use this algorithm for screen picking Aurelien ------------------ Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=43329#43329 _______________________________________________ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
