Hi Joachim, at the moment it's only a quick and dirty evaluation prototypic implementation, of course i have a huge overhead, i like to replace for triangles mesh the vertex array by a kd-tree in the osg core implementation. may i get time tomorrow to doing depther tests and some may i will be able work out a first version of such a replacement in the osg core.
i guess if i will integrate it right in osg core the overhead will be not really huge, but i don't yet know it exactly /adegli 2007/10/11, Joachim E. Vollrath <[EMAIL PROTECTED]>: > > Hi Adrian, > > ok, I agree. > > You said you built a kD-Tree on top of cow.osg. What exactly are you > doing with the vertex/triangle arrays then? > > How much overhead in terms of memory does this produce? Would this > really scale for large scenes? > > regards, > > Joachim > > Adrian Egli wrote: > > Hi Joachim, > > > > i agree completely with the your point of view. but one important thing > is, > > and only this part i am working on > > is the fact that we haven't an accelerated line intersection test > > implemented for triangle represented topology. $ > > if we make use of the drive manipulator, we can drop in ver bad frame > rates, > > and this isn't only a question of the rendering pipeline, > > if we have to check against collisions and so on, and if we use the line > > intersection test based on vertex array, > > which is the same as the rendering vertex are, then for a hudge amount > of > > triangles we get really poor fps. > > and if we can speed up this intersection, may we will be able to boost > many > > osg based applications, and this > > would be really interesting for many others in the community. > > > > /adegli > > > > > -- > Joachim E. Vollrath > University of Stuttgart > Institute for Visualization and Interactive Systems (VIS) > web: http://www.vis.uni-stuttgart.de/~vollrajm/ > mail: [EMAIL PROTECTED] > phone: 49.711.7816.403 > fax: 49.711.7816.340 > > german postal address: > Dipl. Inf. Joachim E. Vollrath > Universitaet Stuttgart, Institutsverbund Informatik > Institut fuer Visualisierung und Interaktive Systeme > Universitaetstrasse 38 > 70569 Stuttgart > GERMANY > > _______________________________________________ > osg-users mailing list > [email protected] > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > -- ******************************************** Adrian Egli
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