# addCylinder and end of addCone

now theoretically operationnal, still need to debug them nevertheless
 # clipping pane and cmake test

move the condition of creation of a clipping plane in viewer3D it becames a condition of display

change the test in the CMakeList because when enable QGLViewer and not CAIRO a test which needed Board3DTo2D was still here. That generate a compilation error because the method init in board3DTo2D.cpp didn't exist in a project with those options