using get-pixels library.coffee

getPixels = require 'get-pixels'

decimalToHexString = (number) ->
    if number < 0
      number = 0xFFFFFFFF + number + 1
    return number.toString(16).toUpperCase()

getPixels "16x16test2.png", (err, pixels) ->
  if err
    console.log "Bad image path"
    return
  console.log "got pixels", pixels.shape.slice()
  [X, Y, BPP] = pixels.shape.slice()
  console.log "X: #{X}, Y: #{Y}, BPP: #{BPP}"
  for x in [0...X]
    line = ""
    for y in [0...Y]
      [R, G, B, A] = [pixels.get(x, y, 0), pixels.get(x, y, 1), pixels.get(x, y, 2), pixels.get(x, y, 3)]
      pixelvalue = ((R<<24)+(G<<16)+(B<<8)+A)
      line += ("00000000" + decimalToHexString(pixelvalue))[-8..-1] + " "
    console.log line