Polylines rendering below the map

CesiumJS
1

I try to load geojson (type MultiLineString), Via GeoJsonDataSource.load method.

the polylines that were created has penetrated the surface, I want them to stop at surface height.
start position should be above the ground and the end position on the ground.

240683079-ce503ce5-150c-4984-9484-7dffca01ccd9
240683079-ce503ce5-150c-4984-9484-7dffca01ccd91110×611 48.4 KB

I want to preserve the ‘3D behavior’ - when I change to globe view I could see the polylines’ height - so clamp to ground isn’t an option

image
image1144×536 50.2 KB

I added the code below for reproduce in sandcastle:

const viewer = new Cesium.Viewer("cesiumContainer");

viewer.dataSources.add(
    new Cesium.GeoJsonDataSource('test').load(**Here we load the geojson I added below**)
  );

MultiLineString.geojson (105.4 KB)

here is a sandcastle example:
MultiLineString example.