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wed code - colin

def chromakeyBasic():
  background = makePicture(getMediaPath("sting2.jpg"))
  bart = makePicture(getMediaPath("bart2.png"))

  #openPictureTool(background)

  xOffset = 198
  yOffset = 136

  for x in range(1, getWidth(bart)):
    for y in range(1, getHeight(bart)):
      p = getPixel(bart, x, y) # green one
      c = getColor(p)

      targetP = getPixel(background, x + xOffset, y + yOffset)

      # copies the pixels over if the distance is large enough
      # change > to < to copy over just the green
      if distance(makeColor(0, 255, 0) , c) > 50:
        setColor(targetP, c)

  show(background)

def colbert():
  background = makePicture(getMediaPath("mars_panorama.jpg"))
  colbert = makePicture(getMediaPath("colbert_green.jpg"))
  #openPictureTool(colbert)

  # setting your own color since the original background color is not pure green
  bgColor = makeColor(81, 153, 67)
  chromakey(background, colbert, 80, bgColor)

  show(background)

def chromakey(background, colbert, threshold, bgColor):

  # different kind of copying using just one loop
  for p in getPixels(colbert):
    c = getColor(p)
    
    # using getX and getY since we only have one loop
    targetP = getPixel(background, getX(p), getY(p))

    if distance(c, bgColor) > threshold:
      setColor(targetP, c)

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• Slides and Code- Spring 2008 last edited on 23 April 2008 at 11:00 am by lawn-128-61-23-153.lawn.gatech.edu