var dragging = false;

var handler = new Cesium.ScreenSpaceEventHandler(viewer.canvas);

handler.setInputAction(

    function(click) {

        var pickedObject = scene.pick(click.position);

        if (Cesium.defined(pickedObject) && (pickedObject.id === entity)) {

            entity.billboard.scale = 1.2;

            dragging = true;

            scene.screenSpaceCameraController.enableRotate = false;

        }

    },

    Cesium.ScreenSpaceEventType.LEFT_DOWN

);

​

handler.setInputAction(

    function(movement) {

        if (dragging) {

            entity.position = camera.pickEllipsoid(movement.endPosition);

        }

    },

    Cesium.ScreenSpaceEventType.MOUSE_MOVE

);

​

handler.setInputAction(

    function() {

        entity.billboard.scale = 1;

        dragging = false;

        scene.screenSpaceCameraController.enableRotate = true;

    },

    Cesium.ScreenSpaceEventType.LEFT_UP

);

placemark.setName('Drag Me!');

​

// listen for mousedown on the window (look specifically for point placemarks)

google.earth.addEventListener(ge.getWindow(), 'mousedown', function(event) {

    if (event.getTarget().getType() == 'KmlPlacemark' &&

        event.getTarget().getGeometry().getType() == 'KmlPoint') {

        //event.preventDefault();

        var placemark = event.getTarget();

​

        dragInfo = {

            placemark : event.getTarget(),

            dragged : false

        };

    }

});

​

// listen for mousemove on the globe

google.earth.addEventListener(ge.getGlobe(), 'mousemove', function(event) {

    if (dragInfo) {

        event.preventDefault();

        var point = dragInfo.placemark.getGeometry();

        point.setLatitude(event.getLatitude());

        point.setLongitude(event.getLongitude());

        dragInfo.dragged = true;

    }

});

​

// listen for mouseup on the window

google.earth.addEventListener(ge.getWindow(), 'mouseup', function(event) {

    if (dragInfo) {

        if (dragInfo.dragged) {

            // if the placemark was dragged, prevent balloons from popping up

            event.preventDefault();

        }

​

        dragInfo = null;

    }

});