Can entities be mirrored around a point?

For example, using the wedge from the ‘Partial Ellipsoid’ sandcastle:

Can this wedge be mirrored around its origin to have an additional ‘lobe’ facing the other way? Or, does a new entity have to be created?

You would need to create a new entity for the mirror of the shape. If you know the point you want to mirror around, you can compute the transform for the mirrored shape.

I see.

I’m hoping Cesium entities get support for multipolygons soon (that is, two+ circles, two+ ellipsoids, etc.) as that would make this process (and later editing/deletion of them) much simpler.