import os

def dragTrace(fromDir,target,level):
  allFiles = os.listdir(fromDir)
  allFiles.sort()
  fromPictFile = allFiles[0]
  fromPict = makePicture(fromDir+fromPictFile)
  for toPictFile in allFiles[1:]:
    printNow(toPictFile)
    # Copy all the high luminance colors from fromPict to toPict
    toPict = makePicture(fromDir+toPictFile)
    for p in getPixels(fromPict):
      if luminance(p) > level:
        c = getColor(p)
        setColor(getPixel(toPict,getX(p),getY(p)),c)
    writePictureTo(toPict,target+toPictFile)
    fromPict = toPict
  
def luminance(apixel):
  return (getRed(apixel)+getGreen(apixel)+getBlue(apixel))/3.0

def dopaints():
  #dragTrace("/home/guzdial/cs1315/moviepainting/paint1-20fps/","/home/guzdial/cs1315/moviepainting/paint1-paint/",100)
  dragTrace("/home/guzdial/cs1315/moviepainting/paint2-10fps/","/home/guzdial/cs1315/moviepainting/paint2-paint/",100)
  dragTrace("/home/guzdial/cs1315/moviepainting/paint3/","/home/guzdial/cs1315/moviepainting/paint3-paint/",100)
  dragTrace("/home/guzdial/cs1315/moviepainting/paint4/","/home/guzdial/cs1315/moviepainting/paint4-paint/",100)
  dragTrace("/home/guzdial/cs1315/moviepainting/paint5/","/home/guzdial/cs1315/moviepainting/paint5-paint/",100)
  dragTrace("/home/guzdial/cs1315/moviepainting/paint6/","/home/guzdial/cs1315/moviepainting/paint6-paint/",100)