pixelflut/eh18-image.py

import socket
import random
import time
from PIL import Image
from random import shuffle
import numpy as np

TCP_IP = '94.45.232.48'
TCP_PORT = 1234
BUFFER_SIZE = 4096

flutwidth = 1920
flutheight = 1080

width=200
height=200

s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.connect((TCP_IP, TCP_PORT))

c = '000000'

im = Image.open("ctdo.png")
rgb_im = im.convert('RGBA')




def randomnumber(pseed,pmin,pmax,v1,v2,v3):
    return (pseed*v1+pseed^2*v2+pseed^3*v3)%(pmax-pmin)+pmin


newseed=(int)(time.time()/60)
seed=newseed

parts=4 #n users
user=1 #1..n

if __name__ == '__main__':

    pixelcoords=[]
    for _x in range(width):
        for _y in range(height):
            pixelcoords+=[(_x,_y)]

    random.seed(42)
    random.shuffle(pixelcoords)
    print(pixelcoords)


    pixelcoords=pixelcoords[int(len(pixelcoords)/parts)*(user-1):int(len(pixelcoords)/parts)*(user)]

    while True:
        starttime=time.time()
        commandsarray=[]
        seed=newseed
        print("Seed: "+str(seed))
        #xv=random.randint(0,flutwidth)
        #yv=random.randint(0,flutheight)

        #xv=random.randint(width/2,flutwidth-width/2)
        #yv=random.randint(height/2,flutheight-height/2)
        xv=randomnumber(seed,width/2,flutwidth-width/2, 1234,-242,4)
        yv=randomnumber(seed,height/2,flutheight-height/2, 1423,-122,3)
        print("xv="+str(xv)+ "yv="+str(yv))
        _current_command=""






        for i,j in pixelcoords:
            r, g, b,a = rgb_im.getpixel((i, j))
            if a!=255:
                continue
            #if r>127:
            #    continue #skip bright pixels
            #r=255-r

            #_current_command+='PX %d %d %02x%02x%02x\n' % (i+xv,j+yv,r,g,b) #rgb
            _current_command+='PX %d %d %02x\n' % (i+xv-width/2,j+yv-height/2,r) #monochrome only red channel
            if len(_current_command)>=1400:
                commandsarray+=[_current_command.encode()] #append packet
                _current_command=""

        commandsarray+=[_current_command.encode()] #append last packet

        print("Generated Commands in "+str(time.time()-starttime)+" seconds")


        while seed==newseed:
            try:
                starttime=time.time()
                for command in commandsarray:

                        s.send(command)


                print("Send Image in "+str(time.time()-starttime)+" seconds")
            except BrokenPipeError:
                print("BrokenPipeError. Reconnecting")
                s.close()
                s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
                s.connect((TCP_IP, TCP_PORT)) #reconnect
                print("reconnected")

            newseed=(int)(time.time()/60)


exit()