Iteration_03_Random_Walk.py

#!/usr/bin/env python3
# -*- coding: utf-8 -*-
"""
Created on Tue Jul  9 09:17:05 2019

'''

from PIL import Image, ImageDraw
import random


#im = Image.open('/Users/timallan/Desktop/whiteFang/01_ASSETS/__IMAGES/_DL/northernLights_1920x1080.png')

im = Image.new('RGB', (200, 200), (240, 240, 240))

w, h = im.size

pixelTotal = w * h
pixelTarget = int(pixelTotal * 0.41)

pointsDrawn = 0
pointsDrawnList = []

x = random.randrange(w)
y = random.randrange(h)
steps = 0

draw = ImageDraw.Draw(im)

while pointsDrawn < pixelTarget:

    steps += 1
        
    if (x, y) not in pointsDrawnList:
            
        draw.point((x, y), (5, 5, 5))
        pointsDrawnList.append((x, y))
        pointsDrawn +=1    
                    
    stepx = random.randrange(-1, 2)
    stepy = random.randrange(-1, 2)
         
    x += stepx
    y += stepy 
    
    if x < 0 or x > w: x = 0
    if y < 0 or y > h: y = 0
        
del draw
       
im.show()