1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/tk1.py	Tue Dec 07 18:29:59 2010 +0300
     1.3 @@ -0,0 +1,100 @@
     1.4 +import Tkinter
     1.5 +import time
     1.6 +from math import *
     1.7 +import random
     1.8 +
     1.9 +class Vector(object):
    1.10 +    def __init__(self,x,y):
    1.11 +        self.x=x
    1.12 +        self.y=y
    1.13 +    def __abs__(self):
    1.14 +        return sqrt(self.x**2+self.y**2)
    1.15 +    def __add__(self,other):
    1.16 +        return Vector(self.x+other.x,self.y+other.y)
    1.17 +    def __mul__(self,digit):
    1.18 +        return Vector(digit*self.x,digit*self.y)
    1.19 +    def angle(self):
    1.20 +        if self.x==0:
    1.21 +            if self.y>0:
    1.22 +                return -pi/2
    1.23 +            else:
    1.24 +                return pi/2
    1.25 +        if self.y==0:
    1.26 +            if self.x>0:
    1.27 +                return 0
    1.28 +            else:
    1.29 +                return pi
    1.30 +        m=abs(self)
    1.31 +        if acos(self.x/m)>pi/2 or (acos(self.x/m)>pi/2 and asin(self.y/m)<0):
    1.32 +            return atan(self.y/self.x)-pi
    1.33 +        else:
    1.34 +            return atan(self.y/self.x)
    1.35 +    def angleToCoord(self,angle):
    1.36 +        magn=abs(self)
    1.37 +        self.x=magn*cos(angle)
    1.38 +        self.y=magn*sin(angle)
    1.39 +        return self
    1.40 +    def magnitToCoord(self,m):
    1.41 +        ang=self.angle()
    1.42 +        self.x=m*cos(ang)
    1.43 +        self.y=m*sin(ang)
    1.44 +        return self
    1.45 +
    1.46 +class Ball(object):
    1.47 +    def __init__(self,position,velocity):
    1.48 +        self.position=position
    1.49 +        self.velocity=velocity
    1.50 +    def bounds(self):
    1.51 +        if self.position.x>=595:
    1.52 +            self.position.x=595
    1.53 +            self.velocity=self.velocity.angleToCoord(pi-self.velocity.angle())
    1.54 +        elif self.position.x<=2:
    1.55 +            self.position.x=2
    1.56 +            self.velocity=self.velocity.angleToCoord(pi-self.velocity.angle())
    1.57 +        if self.position.y>=595:
    1.58 +            self.position.y=595
    1.59 +            self.velocity=self.velocity.angleToCoord(-self.velocity.angle())
    1.60 +        elif self.position.y<=2:
    1.61 +            self.position.y=2
    1.62 +            self.velocity=self.velocity.angleToCoord(-self.velocity.angle())
    1.63 +    def collision(self,other):
    1.64 +        if abs(self.position.y-other.position.y)<70 and abs(self.position.x-other.position.x)<70:
    1.65 +            self.velocity.angleToCoord(2*pi*random.random())
    1.66 +            other.velocity.angleToCoord(2*pi*random.random())
    1.67 +root = Tkinter.Tk() 
    1.68 +c = Tkinter.Canvas( root, width = 670, height = 670 )
    1.69 +c.pack()
    1.70 +
    1.71 +b1=Ball(Vector(440,100),Vector(5,7))
    1.72 +b2=Ball(Vector(40,90),Vector(-3,-1))
    1.73 +b3=Ball(Vector(100,250),Vector(0,5))
    1.74 +b4=Ball(Vector(150,250),Vector(-1,2))
    1.75 +ball1 = c.create_oval(0,0,0,0)
    1.76 +ball2 = c.create_oval(0,0,0,0)
    1.77 +ball3 = c.create_oval(0,0,0,0)
    1.78 +ball4 = c.create_oval(0,0,0,0)
    1.79 +while True:
    1.80 +    time.sleep( 0.02 )
    1.81 +    c.delete(ball1)
    1.82 +    c.delete(ball2)
    1.83 +    c.delete(ball3)
    1.84 +    c.delete(ball4)
    1.85 +    ball1=c.create_oval(b1.position.x, b1.position.y, b1.position.x+75, b1.position.y+75,fill="blue" )
    1.86 +    ball2=c.create_oval(b2.position.x, b2.position.y, b2.position.x+75, b2.position.y+75,fill="red")
    1.87 +    ball3=c.create_oval(b3.position.x, b3.position.y, b3.position.x+75, b3.position.y+75,fill="yellow")
    1.88 +    ball4=c.create_oval(b4.position.x, b4.position.y, b4.position.x+75, b4.position.y+75,fill="green")
    1.89 +    b1.bounds()
    1.90 +    b2.bounds()
    1.91 +    b3.bounds()
    1.92 +    b4.bounds()
    1.93 +    b1.collision(b2)
    1.94 +    b2.collision(b3)
    1.95 +    b1.collision(b3)
    1.96 +    b1.collision(b4)
    1.97 +    b3.collision(b4)
    1.98 +    b2.collision(b4)
    1.99 +    b1.position = b1.position+b1.velocity
   1.100 +    b2.position = b2.position+b2.velocity
   1.101 +    b3.position = b3.position+b3.velocity
   1.102 +    b4.position = b4.position+b4.velocity
   1.103 +    c.update()