leonar3do : 3D pick point

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@29805 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Switch to anaglyph glasses

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@29806 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e