using momentum changes now works.

2019-07-16 21:22:11 +02:00 · 2019-07-16 21:22:11 +02:00 · be0e67e954
commit be0e67e954
parent 26acc9802d
1 changed files with 2 additions and 2 deletions
--- a/py/brown/brown.py
+++ b/py/brown/brown.py
@ -38,8 +38,8 @@ class BrownIterator(object):
 			return self.x, self.y

 		delta_px, delta_py = self._interaction(self.x, self.y)
-		self.px += delta_px
-		self.py += delta_py
+		self.px = delta_px + self.px
+		self.py = delta_py + self.py
 		# XXX: We need the (-1)**i to make the problem
 		# symmetric.
 		self.px[np.isnan(self.px)] = self.speed_of_light * (-1)**self._i