Remove unnecessary cast in Line3DCollection.set_segments.

QuLogic · QuLogic · commit 3c27f6c40263 · 2020-05-21T23:08:12.000-04:00
The `segments` parameter is a list of lines (a line being a 2D array or
list of 2-tuples), but every line is not required to be the same length.
This would cause NumPy to produce an object array, but it will start to
warn about ragged arrays in 1.19.

An array isn't really needed as `Line3DCollection._segments3d` is only
iterated over.
diff --git a/lib/mpl_toolkits/mplot3d/art3d.py b/lib/mpl_toolkits/mplot3d/art3d.py
@@ -257,7 +257,7 @@ def set_segments(self, segments):
         """
         Set 3D segments.
         """
-        self._segments3d = np.asanyarray(segments)
+        self._segments3d = segments
         LineCollection.set_segments(self, [])
 
     def do_3d_projection(self, renderer):
