Nearly done with ecf

helpers.py

@@ -9,6 +9,10 @@ import operator as op
 
 from constants import *
 
+def center_of_mass(points):
+    points = [np.array(point).astype("float") for point in points]
+    return sum(points) / len(points)
+
 def choose(n, r):
     if n < r: return 0
     if r == 0: return 1