Conic section between limited quadric (cone/cylinder) and plane : part 2 (drawing in 2D view, ellipse)

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@24889 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Conic section between limited quadric (cone/cylinder) and plane : part 2 (drawing in 2D view, ellipse)

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@24890 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e