From cf2413f9e33d401d7129741c52d8f493100db3fd Mon Sep 17 00:00:00 2001
From: Jan Petykiewicz <anewusername@gmail.com>
Date: Sun, 20 Dec 2020 20:42:50 -0800
Subject: [PATCH] remove_colinear_vertices implementation assumes no duplicate
 vertices, so we need to remove them first

---
 masque/utils.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/masque/utils.py b/masque/utils.py
index a09a09c..6de82cd 100644
--- a/masque/utils.py
+++ b/masque/utils.py
@@ -120,7 +120,7 @@ def remove_colinear_vertices(vertices: numpy.ndarray, closed_path: bool = True)
     Returns:
         `vertices` with colinear (superflous) vertices removed.
     """
-    vertices = numpy.array(vertices)
+    vertices = remove_duplicate_vertices(vertices)
 
     # Check for dx0/dy0 == dx1/dy1