Exception: Add exception with message box for not implement method.

src/Model/Geometry/Point.py

@@ -1,5 +1,7 @@
 # -*- coding: utf-8 -*-
 
+from Model.Except import NotImplementedMethodeError
+
 class Point(object):
     def __init__(self, name:str = ""):
         super(Point, self).__init__()
@@ -20,3 +22,9 @@ class Point(object):
             True if the point is named.
         """
         return self._name.strip() != ""
+
+    def is_nan(self):
+        raise NotImplementedMethodeError(self, self.is_nan)
+
+    def dist(self, p2):
+        raise NotImplementedMethodeError(self, self.dist)