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Text To Image Converter

def stringToImage(string, size):
  '''input string, input magic number, output picture'''

  alpha = {'a':0, 'b':1, 'c':2, 'd':3, 'e':4, 'f':5, 'g':6, 'h':7, 'i':8, 'j':9,
           'k':10, 'l':11, 'm':12, 'n':13, 'o':14, 'p':15, 'q':16, 'r':17, 's':18,
           't':19, 'u':20, 'v':21, 'w':22, 'x':23, 'y':24, 'z':25}

  string = string.lower()

  canvas = makePicture(getMediaPath('7inX95in.jpg'))

  x = canvas.getWidth()/2
  y = canvas.getHeight()/2

  inc = (2*pi)/26

  for letter in string:
    if alpha.has_key(letter):
      x0 = x + int((size*cos(alpha[letter]*inc)))
      y0 = y + int((size*sin(alpha[letter]*inc)))
      addLine(canvas, x, y, x0, y0)
      x = x0
      y = y0

  show(canvas)
  return canvas