Rewrites a ring's longitudes so consecutive vertices never jump more than
180 degrees, pushing values past +/-180 where needed.
Cells that straddle the antimeridian otherwise produce rings whose longitudes
flip between +179 and -179, which makes any naive min/max bounding box span
the entire globe. Cartesian conversion is unaffected by the unwrapping.
Rewrites a ring's longitudes so consecutive vertices never jump more than 180 degrees, pushing values past +/-180 where needed.
Cells that straddle the antimeridian otherwise produce rings whose longitudes flip between +179 and -179, which makes any naive min/max bounding box span the entire globe. Cartesian conversion is unaffected by the unwrapping.