How to flatten terrain

[xjindf]

Hi Team,
I hope to flatten the designated area of the terrain.
Can u please help me with a good idea?
Thanks in Advance！

[sam.rothstein]

@xjindf

Great question! I have never heard of this use case before, but I would love to learn more. What kind of data would you like to flatten? One idea is to use a world terrain dataset that does not have elevation. Let me know if you have any other questions or concerns

-Sam

[xjindf]

Just like this discussion, but not just 3D title, I hope it can also be realized on the terrain.

How to flat the overlap area between a polygon and a 3D tiles to a specific height?

I was trying to implement a feature that is to flat the overlap area between a polygon and a 3D tiles to a given height but didn’t make it. [Flat a 3D Tiles] Cesium provides the clipping plane feature to trim the 3D Tiles which is very much similar to what I want to implement. The difference is that the clipping discards all the vertex but in my case, I want all the vertexes to be set in the same z value. Therefore, I tried to modify the z value of there discarded fragment in the clipping sh…

[sam.rothstein]

@xjindf

Thanks for the update Are you able to provide the exact data type?

-Sam

[MUKUND_THAKARE]

@sam.rothstein
Hello
How do we create the terrain with no elevation ?

Thanks !!

[sam.rothstein]

Hi @MUKUND_THAKARE,

Which terrain are you referring to?

-Sam

[MUKUND_THAKARE]

Hello @sam.rothstein ,
I am creating terrain like this.

viewer = new Cesium.Viewer(container, {
         terrainProvider: Cesium.createWorldTerrain()
});

So this terrain I am referring to.

Thank you !!

[xjindf]

So far, no suitable method has been found to flatten the polygon area specified by the terrain

[sam.rothstein]

Hi @MUKUND_THAKARE,

You will need to import a custom terrain dataset that does not include elevation.

I do not think that there is a way to use the CesiumJS API to flatten Cesium World Terrain at a given point.

-Sam