yer.addTo(map);

        var ringObj, material;

        function addRingEffect() {
            material = getMaterial(0);
            ringObj = new RingEffect(map.getCenter(), {
                radius: 100
            }, material, threeLayer)
            threeLayer.addMesh(ringObj);
            initGui();
            animation();
        }

        function animation() {
            // layer animation support Skipping frames
            if (threeLayer._needsUpdate) {
                threeLayer.redraw();
  