How to get altitude by latitude and longitude

Cesium for Unreal
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Have similar CesiumJS cesium.sampleTerrainMostDetailed API like this?
Line Trace By Channel Can’t meet my needs, I want a quick way to get height

1 Like
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Hi @LuLuEarl,

We currently don’t have an equivalent for sampleTerrainMostDetailed. We know it’s a highly requested feature, so we have an issue open for it on Github.

For you use case, I just want to clarify what you mean by “altitude” or “height”. When we use Latitude, Longitude, Height coordinates in Cesium for Unreal, Height refers to the height of a point above the WGS84 Ellipsoid. This is different from the distance above the terrain itself. For your use case, which one do you need?

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I need to sample terrain heights frequently

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It doesn’t look like there’s any such function, so I’m going to think of something else. Thank you

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Just to give an update, as of Cesium for Unreal v2.9.0, you can now use the asynchronous SampleHeightMostDetailed function to query the height on a tileset, at a given longitude / latitude position. This is available in both Blueprints and C++. Remember that this height is returned in meters above the WGS84 ellipsoid!

You can find a Blueprints example in this PR comment: Add Unreal API for terrain height querying by csciguy8 · Pull Request #1421 · CesiumGS/cesium-unreal · GitHub