fix(face): Fix bug in coplanar_union_all

Author: chriswmackey

ladybug_geometry/geometry2d/polyline.py

@@ -362,6 +362,8 @@ def join_segments(segments, tolerance):
             joined segments.
         """
         # group the vertices that make up polylines
+        if len(segments) <= 1:
+            return segments
         grouped_verts = _group_vertices(segments, tolerance)
 
         # create the Polyline2D and LineSegment2D objects

ladybug_geometry/geometry3d/face.py

@@ -2459,7 +2459,7 @@ def coplanar_union_all(faces, tolerance, angle_tolerance):
         all_poly = [faces[0].boundary_polygon2d]
         if faces[0].has_holes:
             for hole in faces[0].hole_polygon2d:
-                all_poly.extend(hole)
+                all_poly.append(hole)
                 hole_decoder.append(True)
         for of in faces[1:]:
             of_poly = Polygon2D(tuple(prim_pl.xyz_to_xy(pt) for pt in of.boundary))
@@ -2468,7 +2468,7 @@ def coplanar_union_all(faces, tolerance, angle_tolerance):
             if of.has_holes:
                 for hole in of.holes:
                     h_poly = Polygon2D(tuple(prim_pl.xyz_to_xy(pt) for pt in hole))
-                    all_poly.extend(h_poly)
+                    all_poly.append(h_poly)
                     hole_decoder.append(True)
         # snap the polygons to one another to avoid tolerance issues
         try:

ladybug_geometry/geometry3d/polyline.py

@@ -292,6 +292,8 @@ def join_segments(segments, tolerance):
             joined segments.
         """
         # group the vertices that make up polylines
+        if len(segments) <= 1:
+            return segments
         grouped_verts = _group_vertices(segments, tolerance)
         # create the Polyline3D and LineSegment3D objects
         return Polyline3D._grouped_verts_to_objs(grouped_verts)