Hi Kevin, I really have little clue why on earth you are doing what you are doing, but for sure the doing a tessellation during the frame is certainly not something you want to do.
Might I recommend that you take a step back and explain from a higher level what you are trying to achieve without diving into some specific implementation details. Once others have this more useful guide to what you are doing they'll have a better chance of being able to guide you in the right direction. Robert. On Sun, Jul 26, 2009 at 6:35 PM, Kévin Faure<[email protected]> wrote: > Hi, > > Firstly, I create a region of 6.000 points. They are computed randomly to > make an ellipsoid. > Then, "I have to" build my Delaunay in a CullCallback. > Each points are multiplied by the modelViewProjectionMatrix and send to > DelaunayTriangulator ( because with my points in 3d, delaunay doesn't work > !!!). > Thus, Delaunay is computed at each frame ... I've only 15 FPS... > > It is possible to generate the Delaunay just once and note in a cullcallback ? > > > My code in cullcallback : > > > Code: > > // _vSmpPt : Vec3Array with points in 3D space > > for (unsigned int i = 0 ; i < _vSmpPt->size() ; ++i) > temp->push_back(_vSmpPt->at(i) * modelViewProjectionMatrix); > > osgUtil::DelaunayTriangulator* delo = new > osgUtil::DelaunayTriangulator(temp.get()); > bool result = delo->triangulate(); > osg::ref_ptr<osg::DrawElementsUInt> primitiveTriangles = delo->getTriangles(); > > > osg::Geometry* geom = dynamic_cast<osg::Geometry*>(drawable); > geom->setVertexArray(temp.get()); > geom->removePrimitiveSet(0,geom->getNumPrimitiveSets()); > geom->addPrimitiveSet(primitiveTriangles.get()); > geom->setUseDisplayList(false); > geom->setUseVertexBufferObjects(false); > > > > > > Thank you! > > Cheers, > Kévin > > ------------------ > Read this topic online here: > http://forum.openscenegraph.org/viewtopic.php?p=15455#15455 > > > > > > _______________________________________________ > osg-users mailing list > [email protected] > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
