refined description for patches.Arc mechanism

NicolasCourtemancheAtMcGill · web-flow · commit 6aa5fdeb1694 · 2019-03-27T23:46:12.000-04:00
diff --git a/lib/matplotlib/patches.py b/lib/matplotlib/patches.py
@@ -1605,10 +1605,9 @@ def __init__(self, xy, width, height, angle=0.0,
             the absolute starting angle is 135.
             Default *theta1* = 0, *theta2* = 360, i.e. a complete ellipse.
             The arc is drawn in the counterclockwise direction.
-            Negative angles are valid, and increase negatively in the clockwise
-            direction.
-            Angles greater than 360 or smaller than -360 are represented by an
-            equivalent angle in the range (-360, 360).
+            Angles greater than or equal to 360, or smaller than 0, are 
+            represented by an equivalent angle in the range [0, 360), by 
+            taking the input value mod 360.
 
         Other Parameters
         ----------------
