If you're working with a lot of different point types then it probably makes sense to define your own point type that provides type conversion to all the other

If you're working with a lot of different point types then it probably makes sense to define your own point type that provides type conversion to all the other point types used in your codebase. That way you're not coupled to one library's point type in your own code and can add extra functions, etc. to the point class that you might need. You can also explicitly control stuff like what frame of reference your coordinate system is in and your type conversion functions handle converting to different frames of reference for other point types.