How to create a bump or pit on Cesium 3D Tileset terrain using cartographic polygon in Unreal?

[Unreal_dev]

Hi everyone. I want to modify the terrain surface of a Cesium 3D Tileset in Unreal Engine by adding a localized feature — such as a bump or a pit/ditch in a specific area. Is it possible to achieve this using a CartographicPolygon or any other method in Cesium for Unreal? If so, can anyone guide?

Thanks

[janine]

Hi @Unreal_dev,

You might be able to accomplish this effect using a material affect with CartographicPolygon. There’s an old forum post here that might be helpful, even if it’s for a slightly different use case:

Flatten the ground surface or Terrain inside a polygon

Hi @shefypattambi, Glad to hear you’re making use of the Cartographic Polygon! The short answer is no, we don’t currently have a tool to flatten areas inside a polygon. If this is something you’d like to see added to the plugin, I encourage you to submit an issue on the github repository for it, along with information about potential use cases for such a tool. That being said, I was curious, so I took a look to see how you could achieve something similar in Unreal. It turns out it’s possible …