Get middle tile projection

CesiumJS
#1

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

For a very specific system, I need to be able to automatically get the tile from the middle and perform an AJAX request that returns me the data of it (a bit like a featureInfo). The AJAX call takes a BBOX which is assembled very well through {westProjected},{southProjected},{eastProjected},{northProjected} when using a ImageryProvider but since this is an AJAX call, I can’t use those variables and I have been unable to understand how to create them by myself.

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

None, I have tried so much things - nothing worked.

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

It is for a very specific request in order to achieve a “catalog like” system.

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

Chrome. Mac OS X. Cesium 1.66

#2

Can you describe what you’re trying to achieve? Are you trying to get the tile as an image?

There isn’t a way to get the globe tile using the public API that I’m aware of, but you can see how the Cesium inspector does it in the source code here:

https://github.com/AnalyticalGraphicsInc/cesium/blob/f12320798b44e4de8f4fc3efd0059c34752d7499/Source/Widgets/CesiumInspector/CesiumInspectorViewModel.js#L508-L534

The “pick a tile” debug function can be found in the inspector example, if you click on “Terrain”:

https://sandcastle.cesium.com/index.html?src=Cesium%20Inspector.html

#3

Basically, I am trying to send an AJAX request to an URL that contains the BBOX, just like you would do through the UrlTemplateImageryProvider. I just can’t use that function as the goal is not to receive an image but a JSON response that need to be treated independently.