Create GeoSeries.contains_properly method using point_in_polygon.

python/cuspatial/cuspatial/core/binops/contains.py

@@ -21,13 +21,11 @@ def contains_properly(
     poly_points_y,
 ):
     """Compute from a series of points and a series of polygons which points
-    fall within each polygon. Note that polygons must be closed: the first and
-    last coordinate of each polygon must be the same.
-
-    This implements `.contains_properly`, which shares a large
-    space of correct cases with `GeoPandas.contains` but they do not
-    produce identical results. In the future we will use intersection
-    testing to match .contains behavior.
+    are properly contained within the corresponding polygon. Polygon A contains Point B 
+    properly if B intersects the interior of A but not the boundary (or exterior). 
+
+    Note that polygons must be closed: the first and last vertex of each
+    polygon must be the same.
 
     Parameters
     ----------

python/cuspatial/cuspatial/core/geoseries.py

@@ -692,9 +692,10 @@ def _gather(
         return self.iloc[gather_map]
 
     def contains_properly(self, other, align=True):
-        """Compute from a GeoSeries of points and a GeoSeries of polygons which
-        points fall within each polygon. Note that polygons must be closed:
-        the first and last coordinate of each polygon must be the same.
+        """Compute from a GeoSeries of points and a GeoSeries of polygons which 
+        points are properly contained within the corresponding polygon. Polygon A
+        contains Point B properly if B intersects the interior of A but not the
+        boundary (or exterior). 
 
         Parameters
         ----------
@@ -765,7 +766,9 @@ def contains_properly(self, other, align=True):
         indexed by poly_offsets. If there are rings in poly_ring_offsets that
         are not part of the polygons in poly_offsets, results are likely to be
         incorrect and behavior is undefined.
-
+Note
+----
+Polygons must be closed: the first and last coordinate of each polygon must be the same.
         Returns
         -------
         result : cudf.Series