#!/usr/bin/env python3.7
# Draws image at ipv6tree.bitnet.be (was jinglepings.com) using an image file!
# Needs sudo to run...
#   sudo ./ipv6_image.py
# Image file should be in the current directory!

# Note that normal screen/image conventions are followed...
#   y increasing moves DOWN the TV!
#   (0,0) is the pixel at upper left of the screen



imageName = "smiley.png"

# adjust the following to start in desired region of the screen
xMin = 50
yMin = 300

pausee = 0.0001     # minimum time between pings in seconds
ip_base = '2a05:9b81:2021:'




import socket
import time

from PIL import Image
im = Image.open(imageName).convert('RGB')
xSize,ySize = im.size
 


# xxx and yyy give the pixel (0 <= xxx < 1920, 0 <= yyy < 1080 )
# rgb are colors between 0 and 255
def send_ping(xxx,yyy,r,g,b):
  addr = ip_base + '%i:%i:%.2x:%.2x:%.2x' % (xxx,yyy,r,g,b)
  #print(addr)
  try:
    send_socket.sendto(b'\x80\0\0\0\0\0\0\0', (addr, 0, 0, 0))
  except:
    pass
  time.sleep(pausee)


send_socket = socket.socket(socket.AF_INET6, socket.SOCK_RAW, socket.getprotobyname('ipv6-icmp'))
x = 0
y = 0
while True:

  r,g,b = im.getpixel((x,y))   # returns rgb colors from 0 to 255

  # to override the above image
  #r = 1
  #g = 1
  #b = 1
  #b = int(x*255/1920)

  if r!=0 or g!=0 or b!=0:   # don't send anything if black!
    if g == 0:   # nothing is drawn if g=0 for some reason
      g = 1
    if r == 0:   # do the rest to be safe in future
      r = 1
    if b == 0:
      b = 1
    send_ping(x+xMin,y+yMin,r,g,b)

  x += 1
  if x == xSize:
    x = 0
    y = (y+1)%ySize