def rotate90():
  # selected image to rotate
  file = pickAFile()
  pict1 = makePicture(file)

  # get the wid and hgt of pict1
  wid1 = getWidth(pict1)
  hgt1 = getHeight(pict1)

  # create the blank canvas for the rotated image
  # makeEmptyPicture(widthOfNewImage, heightOfNewImage)
  pict2 = makeEmptyPicture(hgt1-1, wid1-1)
  print wid1, hgt1, getWidth(pict2), getHeight(pict2)

  # copy and rotate the pixels
  # use x for the columns (determined by the width)
  # use y for the rows (determined by the height)
  for x in range (1, wid1+1):
    for y in range (1, hgt1+1):

      # get the color value from the pixel in the
      #   original image
      pixel1 = getPixel(pict1, x, y)
      color = getColor(pixel1)

      # determine the column and row in the rotated image
      x2 = hgt1 + 1 - y
      y2 = x

      # put the color in the pixel in the rotated image
      pixel2 = getPixel(pict2, x2, y2)
      setColor(pixel2, color)

  # display the rotated image
  show (pict2)

def rotate270():
  # selected image to rotate
  file = pickAFile()
  pict1 = makePicture(file)

  # get the wid and hgt of pict1
  wid1 = getWidth(pict1)
  hgt1 = getHeight(pict1)

  # create the blank canvas for the rotated image
  # makeEmptyPicture(widthOfNewImage, heightOfNewImage)
  pict2 = makeEmptyPicture(hgt1-1, wid1-1)
  print wid1, hgt1, getWidth(pict2), getHeight(pict2)

  # copy and rotate the pixels
  # use x for the columns (determined by the width)
  # use y for the rows (determined by the height)
  for x in range (1, wid1+1):
    for y in range (1, hgt1+1):

      # get the color value from the pixel in the
      #   original image
      pixel1 = getPixel(pict1, x, y)
      color = getColor(pixel1)

      # determine the column and row in the rotated image
      # x2 = hgt1 + 1 - y
      # y2 = x
      #  only need to change this part from rotate90()
      x2 = y
      y2 = wid1 + 1 - x

      # put the color in the pixel in the rotated image
      pixel2 = getPixel(pict2, x2, y2)
      setColor(pixel2, color)

  # display the rotated image
  show (pict2)

def rotate180():
  # selected image to rotate
  file = pickAFile()
  pict1 = makePicture(file)

  # get the wid and hgt of pict1
  wid1 = getWidth(pict1)
  hgt1 = getHeight(pict1)

  # create the blank canvas for the rotated image
  # makeEmptyPicture(widthOfNewImage, heightOfNewImage)
  pict2 = makeEmptyPicture(wid1-1, hgt1-1)
  print wid1, hgt1, getWidth(pict2), getHeight(pict2)

  # copy and rotate the pixels
  # use x for the columns (determined by the width)
  # use y for the rows (determined by the height)
  for x in range (1, wid1+1):
    for y in range (1, hgt1+1):

      # get the color value from the pixel in the
      #   original image
      pixel1 = getPixel(pict1, x, y)
      color = getColor(pixel1)

      # determine the column and row in the rotated image
      x2 = wid1 + 1 - x
      y2 = hgt1 + 1 - y

      # put the color in the pixel in the rotated image
      pixel2 = getPixel(pict2, x2, y2)
      setColor(pixel2, color)

  # display the rotated image
  show (pict2)

def rotate(pict1):
  # get the wid and hgt of pict1
  wid1 = getWidth(pict1)
  hgt1 = getHeight(pict1)

  # create the blank canvas for the rotated image
  # makeEmptyPicture(widthOfNewImage, heightOfNewImage)
  pict2 = makeEmptyPicture(hgt1-1, wid1-1)
  print wid1, hgt1, getWidth(pict2), getHeight(pict2)

  # copy and rotate the pixels
  # use x for the columns (determined by the width)
  # use y for the rows (determined by the height)
  for x in range (1, wid1+1):
    for y in range (1, hgt1+1):

      # get the color value from the pixel in the
      #   original image
      pixel1 = getPixel(pict1, x, y)
      color = getColor(pixel1)

      # determine the column and row in the rotated image
      x2 = hgt1 + 1 - y
      y2 = x

      # put the color in the pixel in the rotated image
      pixel2 = getPixel(pict2, x2, y2)
      setColor(pixel2, color)

  # display the rotated image
  return (pict2)


def callRotate():
  # selected image to rotate
  file = pickAFile()
  opict = makePicture(file)

  # call the rotate() function
  npict = rotate(opict)

  # display the rotated image
  show (npict)

  # call the rotate() function
  npict2 = rotate(npict)

  # display the rotated image
  show (npict2)

  # call the rotate() function
  npict3 = rotate(npict2)

  # display the rotated image
  show (npict3)

  # call the rotate() function
  npict4 = rotate(npict3)

  # display the rotated image
  show (npict4)