With my PRs being (almost) wrapped up, I'd like to ask some doubts about the other project (besides continuing to improve documentation, namely for the arithmetic operations) I'd like to work on as part of GSoc '20 - Implement support for non-cartesian geometries in convex_hull() either by adapting existing algorithm and strategies (preferable) or implementing it as different algorithm. 

Assuming a coordinate system - the Polar coordinate system, for this, can we not simply use the boost::geometry::transform function to convert cartesian to polar coordinates and vice versa? In this case we can call this function and implement the existing algorithm convex_hull suited for cartesian coordinates and convert it back to polar coordinates once the convex_hull is created in the cartesian coordinate system? 
I can maybe tweak the transform function to incorporate the conversion of ellipsoidal to cartesian system as well in order to extend its scope.

Thank You