From 83cae036d0f23c1c8ef54ef8ded67a130a235f72 Mon Sep 17 00:00:00 2001 From: Nicolas Schodet Date: Wed, 8 May 2013 17:12:29 +0200 Subject: host/simu/utils/vector: add vector rotate --- host/simu/utils/vector.py | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/host/simu/utils/vector.py b/host/simu/utils/vector.py index e5a8bd05..f865c576 100644 --- a/host/simu/utils/vector.py +++ b/host/simu/utils/vector.py @@ -223,6 +223,16 @@ class vector (object): """ return vector (-self.y, self.x) + def rotate (self, angle): + """Return the vector, rotated by given angle. + + >>> vector (1, 2).rotate (math.pi / 2) # doctest: +ELLIPSIS + vector(-2.0, 1.0...) + """ + c = math.cos (angle) + s = math.sin (angle) + return vector (c * self.x - s * self.y, s * self.x + c * self.y) + def angle (self): """Return angle from (1, 0). -- cgit v1.2.3