leap-maps-engine

controller.on('frame', function(frame){
        data = frame;
        if(data && data.hands.length > 0){
                if(data.hands[0].palmPosition[1] < PALM_MAP_MOVE_THRESHOLD){
                        map.panBy(data.hands[0].palmPosition[0]/10,data.hands[0].palmPosition[2]/10);
                }else if(data.hands[0].palmPosition[1] > PALM_MAP_TYPE_THRESHOLD){
                        checkFingers(data);
                }
        }
});

function checkFingers(frame){
        switch(frame.pointables.length){
                case 1:
                map.setMapTypeId(google.maps.MapTypeId.SATELLITE);
                break;
                case 2:
                map.setMapTypeId(google.maps.MapTypeId.TERRAIN);
                break;
                default:
                break;
        }
}

controller.connect();