Python tkinter animation using rectangles and circles with random background colour

Creating animation by drawing concentric circles & rectangles on Tkinter Canvas using random colour

Getting random colours

We will generate hex code by using RGB values. These RGB values will be taken from random number generator over the range from 0 to 255.

color_c='#%02x%02x%02x' % (randrange(256), randrange(256), randrange(256))

Using timer

We will call the same function ( recursive calling ) by using after() timer.

if (x1<(width/2)):
        c1.after(500,my_draw)
else:
        return

Restart button

We placed one Restart button to initialize the values of the x1,y1,x2,y2 coordinates.

def restart():
    global x1,y1,x2,y2
    x1,y1,x2,y2=5,5,width-5,height-5
    
    my_draw()
b1=tk.Button(my_w,text='Restart',command=lambda:restart())
b1.grid(row=2,column=0)

Full code is here

import tkinter as tk
from random import randrange
my_w = tk.Tk()
width,height=410,410 # set the variables 
d=str(width)+"x"+str(height+40)
my_w.geometry(d) 
c1 = tk.Canvas(my_w, width=width-10, height=height-10)
c1.grid(row=1,column=0,padx=5,pady=5)
x1,y1,x2,y2=5,5,width-5,height-5
gap=25

def my_draw():
    global x1,y1,x2,y2    
    color_c='#%02x%02x%02x' % (randrange(256), randrange(256), randrange(256))
    c1.create_oval(x1, y1, x2,y2,fill=color_c)
    #c1.create_rectangle(x1, y1, x2,y2,fill=color_c)
    x1,y1,x2,y2=x1+gap,y1+gap,x2-gap,y2-gap
    print(x1)
   
    if (x1<(width/2)):
        c1.after(500,my_draw)
        
    else:
        return    
my_draw()
def restart():
    global x1,y1,x2,y2
    x1,y1,x2,y2=5,5,width-5,height-5
    
    my_draw()
b1=tk.Button(my_w,text='Restart',command=lambda:restart())
b1.grid(row=2,column=0)
my_w.mainloop()

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Subhendu Mohapatra

Author & Instructor at plus2net

I write and maintain practical tutorials on Python, PHP, SQL, JavaScript, HTML, jQuery, and web development at plus2net. The tutorials focus on clear explanations, working examples, and code that readers can test and adapt while learning.

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Animation with Rectangles and Circles

Getting random colours

Using timer

Restart button

Subhendu Mohapatra