# Tk_rotate_oval.py

# Tk_rotate_oval.py

from Tkinter import *

root = Tk()
root.title("Tk Rotate Oval")
### root.withdraw() # vs root.deiconify()')
xm,ym=600,600

canvas = Canvas(root, width=xm, height=ym)
canvas.grid()

from PIL import ImageDraw, ImageTk, Image, ImageGrab
from random import randrange
import time

class Cv(): pass
cv=Cv()

0
RGB_BLACK=(0,0,0)
RGB_WHITE=(255,255,255)
RGB_GRAY=(180,180,180)

RGB_GRAYLIGHT=(236,236,236)
RGB_GRAYDARK=(169,169,169)

RGB_RED=(255,0,0)
RGB_ORANGE=(255,165,0)
RGB_YELLOW=(255,255,0)
RGB_GREEN=(0,128,0)
RGB_BLUE=(0,0,255)
RGB_CYAN=(0,255,255)
RGB_PURPLE=(128,0,128)

RGB_DARKBLUE=(0,0,139)
RGB_DARKGREEN=(0,100,0)
RGB_DEEPPINK=(255,20,147)
RGB_INDIGO=(75,0,130)
RGB_LIGHTPURPLE=(204,153,255)
RGB_LIGHTBLUE=(173,216,230)
RGB_LIGHTGREEN=(178,255,102)
RGB_LIGHTYELLOW=(255,255,102)
RGB_LIME=(0,255,0)
RGB_OLIVE=(107,142,35)

RGB_BROWN=(139,69,19)
RGB_GOLD=(255,215,0)
RGB_SILVER=(192,192,192)

RGB_ROYALBLUE=(65,105,225)
0
img = Image.new('RGB', (xm,ym))
# random.seed(1)


from math import sin, cos, pi

def rotate_oval( x1, y1, x2, y2, rotate=0, vertex_count=-1):
    rotate=rotate%180
    if vertex_count == -1:
        vertex_count = int((abs(x1 - x2) + abs(y1 - y2)) * 0.07)
        vertex_count = max(18,vertex_count)
    vertex_count = max(3,vertex_count)
    (x1, x2) = (min(x1, x2), max(x1, x2))
    (y1, y2) = (min(y1, y2), max(y1, y2))
    a = (x2 - x1) / 2
    b = (y2 - y1) / 2
    VERTEX = [ (a * cos(i * 2 * pi / vertex_count), \
                b * sin(i * 2 * pi / vertex_count)) \
                    for i in range(vertex_count) ]
    ## rotation
    VERTEX = [( x*cos(pi/180*rotate) + y*sin(pi/180*rotate), y*cos(pi/180*rotate) - x*sin(pi/180*rotate) )
              for (x,y) in VERTEX  ]

    ## move center
    VERTEX = [( x + ( x1 + x2 ) / 2, y + ( y1 + y2 ) / 2 )
              for (x,y) in VERTEX  ]
    return VERTEX


if __name__ == '__main__':
    min_x = 20
    min_y = 20
    max_x = 580
    max_y = 580
    for i in range(1000):
        canvas.delete('all')
        '''
        (x1, y1) = (randrange(start=min_x, stop=max_x),
                    randrange(start=min_y, stop=max_y))
        (x2, y2) = (randrange(start=min_x, stop=max_x),
                    randrange(start=min_y, stop=max_y))
        '''
        x1, y1, x2, y2 = 200, 0, 400, 600
        roto = rotate_oval(x1, y1, x2, y2, i)
        canvas.create_polygon(roto)
        root.update()