How to move entities that are under terrain to the top of it?

[micael...@gmail.com]

I'm drawing some entities with data that I get from a service.

However, the height values that I get always put the entities under the terrain. Is it possible to detect this and move them to the top of the terrain?

Thanks in advance.

[Omar Shehata]

Most entity types should have a `heightReference` property that'll allow you to clamp it to the ground (see https://cesiumjs.org/Cesium/Build/Documentation/HeightReference.html#.CLAMP_TO_GROUND )

For example, when creating a point (https://cesiumjs.org/Cesium/Build/Documentation/PointGraphics.html) you can set the heightReference to `Cesium.HeightReference.CLAMP_TO_GROUND` and that'll ensure it's always above ground on the terrain. Here's a Sandcastle example:

https://cesiumjs.org/Cesium/Build/Apps/Sandcastle/?src=Ground%20Clamping.html