Is there a utility that can be used to create a Polygon/Polygon Hierarchy based on a Shaped that is described with a series of Move To, Line To, Close To segments?
Does the Polygon Hierarchy expect that the holes are completely contained in the outer positions array?
The Cesium api defines a Polygon Hierarchy as a set of positions and holes. The holes is a polygon hierarchy itself. See PolygonHierarchy - Cesium Documentation
The sandcastle has a demo using it. But in testing if a position of a hole is not contained within the outer positions the shape does not fill correctly.