Switch graphics inside of an entity

1. A concise explanation of the problem you’re experiencing.

I need to switch from a graphic to another in the same entity. For example, if entity has an ellipsoid representation (EllipsoidGraphics) a user should be able to convert it to a ellipse (EllipseGraphics) .

I have found a way to do it by setting the first graphic to undefined and create a different graphic in the same entity.
But by doing so, when I use a CallbackProperty on the first graphic , I have an error when I set the graphic to undefined because the graphic does not exists anymore.

Is there a way to switch between graphics in the same entity and/or unregister a graphic from a CallbackProperty ?

2. A minimal code example. If you’ve found a bug, this helps us reproduce and repair it.

var viewer = new Cesium.Viewer(‘cesiumContainer’);

var position = new Cesium.Cartesian3.fromDegrees(-114.0, 40.0, 300000.0);

var blueBox = viewer.entities.add({

name : 'Blue box',

position: Cesium.Cartesian3.fromDegrees(-114, 40.0, 300000.0),

ellipsoid : {

    radii : new Cesium.CallbackProperty(getRadii, false),

    material : Cesium.Color.RED



function changeEntityType(){

 blueBox.ellipsoid = undefined;

blueBox.ellipse = {

    "semiMinorAxis" : 300000.0,

    "semiMajorAxis" : 300000.0,

    "height" : 200000.0,

    material : Cesium.Color.BLUE



var count = 1000;

function getRadii() {


return new Cesium.Cartesian3(count, count, count);


function setRadiiCallback() {

if(blueBox.ellipsoid) {

     blueBox.ellipsoid.radii.setCallback(getRadii, true);



setInterval(changeEntityType, 10000);

3. Context. Why do you need to do this? We might know a better way to accomplish your goal.

A user should be able to switch between different graphics in the same entity. For example a user can switch between the representations of a circle in 3D (as a circle in 2D could be in 3D a circle, a sphere, a cylinder or a cone) .

4. The Cesium version you’re using, your operating system and browser.


Thanks for reporting this! I think this is a bug, and seems to be the case with all dynamic entities. I opened a bug report here:


So we’ll see what the rest of the developer team thinks.

Thank you for your answer and for opening the issue. I will be following it.