Changeset 29:779e091fb740

Timestamp:

12/20/10 11:36:35 (5 years ago)

Author:

Peter Zotov <whitequark@òÀæ>

Branch:

default

Message:

Make Vector.null back.

File:

• tanchiki/vector.py (modified) (4 diffs)

tanchiki/vector.py

@@ -1 +1 @@
 import math
 
-class Vector(object):   
-
-        def __init__(self, x=0 , y=0):         
+class Vector(object):
+        def __init__(self, x=0 , y=0):
                 self.x = x
                 self.y = y
         
         def __add__(self, other):
-                result = Vector(0,0)
+                result = Vector(0, 0)
                 result.x = self.x + other.x
                 result.y = self.y + other.y
@@ -20 +19 @@
 
         def dot_product(self, other):
-                return  self.x*other.x + self.y*other.y 
+                return  self.x*other.x + self.y*other.y
 
         def __abs__(self):
@@ -50 +49 @@
                         self.x , self.y = self.x*(new_rho/abs(self)) , self.y*(new_rho/abs(self))
 
-        rho = property(get_rho, set_rho) 
+        rho = property(get_rho, set_rho)
 
         def get_phi(self):
@@ -63 +62 @@
 
         phi = property(get_phi, set_phi)
+
+Vector.null = Vector(0, 0)