correctly preserve total arc angle during normalize

2017-04-20 13:01:31 -07:00 · 2017-04-20 13:01:31 -07:00 · 434178c853
commit 434178c853
parent 2c159f2798
1 changed files with 6 additions and 3 deletions
--- a/masque/shapes/arc.py
+++ b/masque/shapes/arc.py
@ -265,11 +265,14 @@ class Arc(Shape):
            rotation = self.rotation + pi / 2
            angles = self.angles - pi / 2

-        if angles[0] >= pi:
-            angles -= pi
+        delta_angle = angles[1] - angles[0]
+        start_angle = angles[0] % (2 * pi)
+        if start_angle >= pi:
+            start_angle -= pi
            rotation += pi

-        angles %= 2 * pi
+
+        angles %= (start_angle, start_angle + delta_angle)
        rotation %= 2 * pi
        width = self.width