I've noticed a disagreement between my height data in my CZML (sea level values) and the calculated (interpolated) height reported at runtime ( I see the runtime values by attaching a listener and watching the Entity position change as the Entity travels).
So, we know that height is taken as height above ellipsoid ( see http://cesiumjs.org/Cesium/Build/Documentation/Cartographic.html ), and that the ellipoid does not necessarily follow sea level.
Question: Do I need to attach a terrain provider to correct this problem?
I found that discussion, which is very good. Thanks. The title is "CesiumTerrainProvider V VRTheWorldTerrainProvider Heights"
Links to posts don’t work if you use the cesiumjs.org domain, though I see that tho managed to find it anyways. That’s why instead of going to http://cesiumjs.org/forum.html I goto https://groups.google.com/forum/#!forum/cesium-dev instead as making links from there actually work.
This just leads to main forum page
This is what google groups gives as a link
Then it changes to this form once entered
I tried removing the last character on the link but it wouldn’t work anymore.