# File: Xiang/move1.py
# 
# Red Ball moves on the screen

from graphics import *

MAXX, MAXY = 500,500    # window size

def initGraphics():
    win = GraphWin( "Moving Red Ball R=25" , MAXX, MAXY  )
    return win

def main():

    win = initGraphics()
    
    deltaX,deltaY = 2,2   #step for move 

    R = 25   # Radius
    ball = Circle( Point(100,100), R )
    ball.setFill( "red" )
    ball.draw( win )

    for i in range (10):
        ball.undraw()
        ball.move(deltaX,deltaY)   # ball moves with step (deltaX,deltaY)
        print "center x=",ball.getCenter().getX(), "center y=",ball.getCenter().getY()
        ball.draw(win)
    
    win.getMouse()
    win.close()

main()