checkbutton_before.set_active(waypoint_model.get_before_flag());
checkbutton_after.set_active(waypoint_model.get_after_flag());
checkbutton_tension.set_active(waypoint_model.get_tension_flag());
checkbutton_continuity.set_active(waypoint_model.get_continuity_flag());
checkbutton_bias.set_active(waypoint_model.get_bias_flag());
checkbutton_temporal_tension.set_active(waypoint_model.get_temporal_tension_flag());
checkbutton_before.set_active(waypoint_model.get_before_flag());
checkbutton_after.set_active(waypoint_model.get_after_flag());
checkbutton_tension.set_active(waypoint_model.get_tension_flag());
checkbutton_continuity.set_active(waypoint_model.get_continuity_flag());
checkbutton_bias.set_active(waypoint_model.get_bias_flag());
checkbutton_temporal_tension.set_active(waypoint_model.get_temporal_tension_flag());