geomerty: Minor change and fix.

src/Model/Geometry/Reach.py

@@ -229,7 +229,7 @@ class Reach:
 
         return (complete, incomplete)
 
-    def _map_guidelines_points(self, func):
+    def _map_guidelines_points(self, func, _filter=None):
         return list(
             # Map for each guideline
             map(
@@ -240,7 +240,10 @@ class Reach:
                         self._guidelines[k],
                     )
                 ),
-                self._guidelines
+                self._guidelines if not _filter else filter(
+                    _filter,
+                    self._guidelines
+                )
             )
         )