Hi Glenn, JS and Cedric, You can inherite from the IntersectionVisitor and implement your own thing. But the future should be different, as JS mentioned i would like to integrate a really fast ray/line check into the osg core. Unfortunatelly i am snowed up with work, and i didn't yet start to integrate my small test application into the osg core. Is there someone out in the universe with some resource left doing it? The aim isn't raytracing get integrated into the osg at the moment, but in future it would be a greate option, may as a nodekit or as a new part of osg.
There exist RayTracer with Refraction / Reflection / Shadows running at 20-25Hz on my MacBookPro (Windows) dual core (only CPU based -> have a look at www.ompf.org) May we can implement once a hybrid rendere GPU / CPU / OpenGL, is there some ideas, i would like to help in this topic, but we need more than one person involved in this new part of rendering. /adegli 2007/11/13, Jean-Sébastien Guay <[EMAIL PROTECTED]>: > > Hello Glenn, > > > Is there a way to tell the osgUtil::IntersectionVisitor to stop > searching > > once it finds one (or "n") intersections? > > I don't know about IntersectionVisitor, but Adrian Egli's kdTree > implementation for OSG supports this (in that case, it's to make > raytracing shadows faster - you check a line segment between the > current surface point and the light(s), and if there is an > intersection you know the point is in shadow; no need to check for > more than one intersection). > > However, that contribution is currently not fit for integration into > OSG. I have promised to do some work on that, but am currently too > busy finishing up my Masters thesis... Once that's done I'll be able > to put some work on this. In addition, the kdTree structure is a whole > lot faster for the actual intersection test, especially if all the > geometry is rigid (non-deforming - transformations by Transform nodes > is OK). > > Sorry for the bad news, but I wanted you to know that something's > coming, just that it's not there yet. > > J-S > -- > ______________________________________________________ > Jean-Sebastien Guay [EMAIL PROTECTED] > http://whitestar02.webhop.org/ > > ---------------------------------------------------------------- > This message was sent using IMP, the Internet Messaging Program. > > > _______________________________________________ > osg-users mailing list > [email protected] > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > -- ******************************************** Adrian Egli
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