# Moving circle; Animate a circle...
from myro import *
from random import *

def main():
    # create and draw the graphics window
    winWidth = winHeight = 500
    w = GraphWin("Bouncing Circle", winWidth, winHeight)
    w.setBackground("white")

    # Create a red circle
    radius = 25
    c = Circle(Point(53, 250), radius)
    c.setFill("red")
    c.draw(w)

    # Animate it
    dx = dy = 3
    while timeRemaining(15):
        # move the circle
        c.move(dx, dy)

        # make sure it is within bounds
        center = c.getCenter()
        cx, cy = center.getX(), center.getY()

        if (cx+radius >= winWidth) or (cx-radius <= 0):
            dx = -dx
        if (cy+radius >= winHeight) or (cy-radius <= 0):
            dy = -dy
        wait(0.1)
main()