From e78c4a8cb53c027ec56349b2cabb734bdf234af2 Mon Sep 17 00:00:00 2001
From: Abhik Pal <theabhikpal@gmail.com>
Date: Thu, 21 Sep 2017 15:02:30 +0200
Subject: [PATCH] BUG: Fixes #12. Vector.random_2d() returns negative values.

---
 p5/pmath/vector.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/p5/pmath/vector.py b/p5/pmath/vector.py
index 32f1d4ee..8249906a 100644
--- a/p5/pmath/vector.py
+++ b/p5/pmath/vector.py
@@ -408,7 +408,7 @@ def from_angle(cls, angle):
     def random_2D(cls):
         """Return a random 2D unit vector.
         """
-        x, y = np.random.random(2)
+        x, y = 2 * (np.random.random(2) - 0.5)
         vec = cls(x, y)
         vec.normalize()
         return vec