# coding:utf-8

import wx
import wx.lib.wxcairo
from time import sleep

class myframe(wx.Frame):
    def __init__(self):
        wx.Frame.__init__(self, None, -1, "Каир", size=(500,400))
        self.Bind(wx.EVT_PAINT, self.OnPaint)

    def OnPaint(self, event):
        dc = wx.PaintDC(self)
        cr = wx.lib.wxcairo.ContextFromDC(dc)

            #cairo drawing calls
        x = 0
        y = 0
        h = 220
        w = 30
        while x < 230 and y < 230:
            x += 10
            y += 20
            cr.set_source_rgba (0.1, 0.5, 0.2, 1)
            cr.set_line_width (10)
            cr.move_to (x, y)
            cr.line_to (x + h, y + w)
            cr.move_to (x, y + w)
            cr.line_to (x + h, y + w)
            cr.stroke()
            sleep(0.5)



app = wx.App()
f = myframe()
f.Show()
app.MainLoop()

import time

class Foo2DIterator(object):

    def __init__(self):
        self.start_time = time.time()
        self.step_time  = 0.5

    def __iter__(self):
        now_time = time.time()

        x = y = 0

        while self.start_time <= now_time:
           yield x, y

            x += 10
            y += 20

            now_time -= self.step_time