Hi Robert I found the problem and fixed it: Turns out is wasn't the MatrixTransform but how I set the camera position. I used: getCamera()->setViewMatrixAsLookat(eye, center, up) which receives osg::Vec3f instead of osg::Vec3d. when I switched to: getCamera()->setViewMatrix(osg::Matrixd::lookat(eye, center, up)) (which receives osg::Vec3d) the problem was completely solved.
Is there a reason why setViewMatrixAsLookat doesn't receive osg::Vec3d?? Roni On 3/3/08, Robert Osfield <[EMAIL PROTECTED]> wrote: > > Hi Roni, > > The OSG defaults to using Matrxd for the Matrix definition. The > MatrixManipulators generally use doubles internally as well. All for > the reason of avoid problems with precision. The intersection code > can be a problem area though as its currently done in floats, other > than this possible area, I'm not sure what code you might be having > issue with. > > What camera manipulator are you using? > > Robert. > > On Mon, Mar 3, 2008 at 7:49 AM, Roni Rosenzweig <[EMAIL PROTECTED]> wrote: > > Hello > > > > I made a small demo using osg 2.2, of an object moving on a terrain with > a > > camera looking at it from above, and lowering towards it. > > When the location of the object+camera is near the (0,0,0) the demo > works > > smoothly. > > However when their location is far (for example at location (30000, > 5000, > > 100)), there are "vibrations" in the move of both the camera and the > object. > > > > I narrowed it down to a precision problem between float and double, and > made > > it much better using Vec3d/Matrixd instead of Vec3f/Matrixf for the > camera > > position. > > However for the object I'm using a osg::MatrixTransform, which uses a > Matrix > > and not a Matrixd. I think this is causing the precision problems in the > > object movement. > > > > Did anyone else bump into this problem? > > Is there a version of osg::MatrixTransform using a Matrixd for double > > precision? > > _______________________________________________ > > 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 >
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