groundrace

Hello, is there any update on this feature? I was able to limit (and it works pretty well!) the camera min/max elevation using the: `Cesium.ScreenSpaceCameraController.minimumZoomDistance`/`Cesium.ScreenSpaceCameraController.maximumZoomDistance` but i can't find anything...

that would be nice as I got the same error for the overlapping geometries that reflect my case i.e (Vatican City or San Marino part of the Italy borders are...