diff --git a/exp/geometry.py b/exp/geometry.py
--- a/exp/geometry.py
+++ b/exp/geometry.py
@@ -37,6 +37,13 @@ class Line():
 		if a is None or b is None: return None
 		return Line(a,b)
 
+	def score(self,points):
+		score=len(self.points)
+		for a in self.points:
+			closest=sorted(points,key=lambda b: a.dist(b))[:4]
+			score+=sum(0.01 for b in closest if b in self.points)
+		return score
+
 	def __str__(self): return "({0},{1})".format(self.a,self.b)
 	def __repr__(self): return "Line({0},{1})".format(repr(self.a),repr(self.b))