import rhinoscriptsyntax as rs
from random import *

iter = 5000
class Ball(object):
    
    def __init__(self, position, color):
        
        self.position =  position
        self.color = color
        self.vel = [randrange(0,10),randrange(0,10),0]
        self.size = 3.
        self.display_list = None
        self.trace = []
        self.colors = []
        
        
    def update(self):
        """one tick of speudo physics"""
        if self.position[2]+self.size/2 < 0:
            self.position[2]=-self.size/2
            #refloction + shock absoption
            self.vel[2] = self.vel[2]*-.90
            #print "bounce"
            
        
        # pseudo gravitiy    
        self.vel[2]= -0.5
        # some friction
        #self.vel= self.vel*.99
        # acceleration
        self.position = rs.VectorAdd(self.position,self.vel)
        #self.display_list = None
        #self.color = .7-self.vel
        #self.trace.append(self.position)
        #self.colors.append(self.color)
        
        
        
        
ball  = Ball([30,30,100.],(0.1,0.1,.5,))

while iter >0:
    iter +=-1
    ball.update()
    print ball.position
    rs.AddPoint(ball.position)