Update, communicated with the people at the geoswift library to implement the "prepared geometry" function of geos into the library.
Implementation:
Map the geometry of each of your features to a PreparedGeometry by calling the new makePrepared() method, and store those values somewhere alongside the original features/properties.
At each location update use one of the new contains methods on PreparedGeometry to test for containment.
https://github.com/GEOSwift/GEOSwift/pull/264
Jessers
Users receive reputation points by contributing quality content to the forums.
Posts include post and replies published on the forums.
Post authors can mark replies as Accepted to indicate successful solutions.
Apple Developer Forums admins can mark replies as Apple Recommended to indicate an approved solution
Post
Replies
Boosts
Views
Activity
Is there anything documented about how to do this specifically?
Did you ever find a solution to this? Suffering a similar issue...