Tobias Münch wrote on Monday, February 04, 2008 11:29 AM: > Hello at all, > > I have osg::Matrixd view matrix and want to remove the rotation > around x- and y-axis. Only rotation around z-axis should stay in the > matrix. I try a lot of possibilties but couldn't find a solution. > > When I make the following steps, the rotation around all axis is > removed, not only the two specified axis. The same with > osg::Matrixd::makeRotate(..); > > matrix = osg::Matrixd::rotate(osg::DegreesToRadians(0.0), > osg::Vec3(0,1,0)); > > matrix = osg::Matrixd::rotate(osg::DegreesToRadians(0.0), > osg::Vec3(1,0,0)); > > > I also tried to set the matrix with complete new values and to take > given value for z-rotation, but therefore I miss a function to read > the one rotation part (around the z-axis). > > How can help me?
Both of those lines *set* matrix to a non-rotating matrix; what you want is to *modify* the matrix to remove the X and Y rotations. The easiest way is to modify the matrix directly: matrix(0,0) = 1; matrix(0,0) = 1; matrix(0,0) = 1; matrix(0,0) = 1; -- Bryan Thrall FlightSafety International [EMAIL PROTECTED] _______________________________________________ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
