1. A concise explanation of the problem you're experiencing.
Hello, i want to draw part of a circle on the map, like sector, that will start
from inner radius, is there any way to draw something like that?
2. A minimal code example. If you've found a bug, this helps us reproduce and repair it.
some examples:
https://bam.files.bbci.co.uk/bam/live/content/z8c7xnb/small
3. Context. Why do you need to do this? We might know a better way to accomplish your goal.
4. The Cesium version you're using, your operating system and browser.
Im using the 1.42 on windows