# Tk_FramesPerSec_demo.py

# Tk_FramesPerSec_demo.py

from Tkinter import *
import time
import random
import urllib2
import sys
import base64
from threading import Thread
from PIL import ImageTk

width = 800
height = 600
radius = 19
root = Tk()
root.geometry('800x600+0+0')
root.title("FPS Demo")
go = True
ballrack = [((400,300),(5, 8))]
fps = 0
sprites = 1
canvas = Canvas(root, width=800, height=600)
canvas.pack()
ballrelease = 0

frames = 0
def _FPS():
    global fps,frames
    fps,frames = frames,0
    root.after(1000,_FPS)
_FPS()

ball="38pxgreenball.png"

try:
    img = ImageTk.PhotoImage(file=ball)
    print 'Images copied from URL to drive'
except:
    URL = 'http://tinyurl.com/38pxgreenball'
    u = urllib2.urlopen(URL)
    raw_data = u.read()
    u.close()
    b64_data = base64.encodestring(raw_data)
    img = ''
    while img == '':
        try:
            img = PhotoImage(data=b64_data)
        except: pass
    f = open(ball,'wb')
    f.write(raw_data)
    f.close()

def keyrelease(event):
    global go
    if event.char == "q":
        go = False ### to exit
        root.destroy()

root.bind("<KeyRelease>", keyrelease)

while go:
    time.sleep(0.025)
    canvas.delete("all")
    for i in range(len(ballrack)):
        loc,ballvel=ballrack[i]
        x=loc[0]+ballvel[0];y=loc[1]+ballvel[1]
        loc=(x,y)
        ball = canvas.create_image(loc[0], loc[1], image=img)
        if canvas.coords(ball)[0] <= radius or canvas.coords(ball)[0] >= width - radius:
            ballvel = ballvel[0]*-1,ballvel[1]
        if canvas.coords(ball)[1] - 20 <= radius or canvas.coords(ball)[1] >= height - radius:
            ballvel = ballvel[0],ballvel[1]*-1
        ballrack[i] = ((loc),(ballvel))
    ballrelease += 1
    if ballrelease > 5:
        ballrelease = 0
        sprites += 1
        ballrack.append(((400,300),(random.randrange(3,12), random.randrange(3,12))))
    canvas.create_text(25, 10, text='FPS = %s' % fps)
    canvas.create_text(200, 10, text='Number Of Sprites = %s' % sprites)
    frames += 1
    canvas.update()

root.mainloop()