Cyclic bugfix.

13d6bcc0 · Ilya Portnov · 798bad79 · 13d6bcc0
--- a/utils/curve/splprep.py
+++ b/utils/curve/splprep.py
@@ -24,9 +24,10 @@ def scipy_nurbs_approximate(points, weights=None, metric='DISTANCE', degree=3, f
        if weights is not None:
            weights = np.r_[weights[good], weights[-1]]
    if is_cyclic:
-        points = np.vstack((points, points[0]))
-        if weights is not None:
-            weights = np.insert(weights, -1, weights[0])
+        if (points[0] != points[-1]).any():
+            points = np.vstack((points, points[0]))
+            if weights is not None:
+                weights = np.insert(weights, -1, weights[0])
    points_orig = points
    points = points.T