function VisSystemHandler ( controller ) {

    function update () {

        // first remove the old object from rotating ( contains splines and moving sprites )

        controller.rotating.remove( controller.visualizationMesh );

        // create a new visualization mesh

        controller.visualizationMesh = new THREE.Object3D();
        var lines = ObjectUtils.createSplineSystem( controller );
        controller.visualizationMesh.add( lines );

        // add the new visualization mesh to rotating

        controller.rotating.add( controller.visualizationMesh );

    }

    return {

        update: update

    }

}
This handlers handle the update of VisSystem ( The system will be updated when clicked country changed ).