From 32b46e078c6ab01988054e2c607c66e403291ced Mon Sep 17 00:00:00 2001
From: Grant Sanderson <grantsanderson7@gmail.com>
Date: Sun, 28 Jan 2018 16:27:07 -0800
Subject: [PATCH] Small adjustments to VMobject.insert_n_anchor_points

---
 mobject/vectorized_mobject.py |  3 ++-
 topics/geometry.py            | 11 +++++++++++
 2 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/mobject/vectorized_mobject.py b/mobject/vectorized_mobject.py
index 2fb398c2..f663367e 100644
--- a/mobject/vectorized_mobject.py
+++ b/mobject/vectorized_mobject.py
@@ -353,7 +353,8 @@ class VMobject(Mobject):
         for index in range(num_curves):
             curr_bezier_points = self.points[3*index:3*index+4]
             num_inter_curves = sum(index_allocation == index)
-            alphas = np.arange(0, num_inter_curves+1)/float(num_inter_curves)
+            alphas = np.linspace(0, 1, num_inter_curves+1)
+            # alphas = np.arange(0, num_inter_curves+1)/float(num_inter_curves)
             for a, b in zip(alphas, alphas[1:]):
                 new_points = partial_bezier_points(
                     curr_bezier_points, a, b
diff --git a/topics/geometry.py b/topics/geometry.py
index 3605d8b6..42cec5a9 100644
--- a/topics/geometry.py
+++ b/topics/geometry.py
@@ -333,6 +333,17 @@ class Line(VMobject):
         self.shift(new_start - self.get_start())
         return self
 
+    def insert_n_anchor_points(self, n):
+        if not self.path_arc:
+            n_anchors = self.get_num_anchor_points()
+            new_num_points = 3*(n_anchors + n)+1
+            self.points = np.array([
+                self.point_from_proportion(alpha)
+                for alpha in np.linspace(0, 1, new_num_points)
+            ])
+        else:
+            VMobject.insert_n_anchor_points(self, n)
+
 class DashedLine(Line):
     CONFIG = {
         "dashed_segment_length" : 0.05