Bounds for a point charge as the area between two circles

Is there a way I can set the bounds for a point charge in a 2d plane as the area between two circles?

If so, how would you do it?

Bounds wants a Box :frowning:
maybe you can filter-out objercts in such a way if they are not in the area between the two circles, they are not affected by the point charge

man that’s a pretty big limitation. I’ve come across several when working with the vector field tools.

Would be a nice addition for Rhino to expand on the vector field tools in the future.

A path following vector field tool would be cool too.