Use custom non-WGS84 ellipsoids ,The edge of the map is stretched

[asdf1966]

[asdf1966]

[azrogers]

Thanks for the report @asdf1966! It would help a lot if you could provide some more information to help me understand what's going on here:

1. What tileset were you testing with?
2. What raster overlay were you testing with?
3. How do you have the ellipsoid set up in Unreal? What are the radii you used?
4. Is it happening at a specific location on the tileset, or just kind of all over the place?

[asdf1966]

I used the TMS raster overlay, set the ellipsoid radius x,y,z=1737400, and happened everywhere; At the same time, I tested in Cesium.js using the same data source and did not experience similar problems.

[azrogers]

Which TMS overlay in specific? Sorry to keep asking for clarification, but it'll be hard to track this down without the info needed to reproduce it on my end. Alternatively, if you want to send a Sandcastle of your test in CesiumJS using the same data source, that would also give the necessary information.