'''Transcentration01.py

This program performs some setup prior to running a game of
"Transcentration".

It reads in a file containing a list of image file names,
and then it reads in a list of transformation formulas.
In the current version, these are assumed to be in a 
one-to-one correspondence, though actually there is
no problem if there are more formulas than images.

For each image on the list of images, the corresponding
formula is taken from the list of formulas and a 
file name is constructed using the image file name
and the first part (the 'name') of the formula.
Next we check to see if a file with this constructed
file name exists in the folder TRANSFORMED.  If so, we
skip this image and this formula and go on to the next one.
If the file does NOT exist, we transform the image with
its formula and create a new image file with the constructed
name and put it in the TRANSFORMED folder.

In this way, it will not be necessary to create any new
image files when the game is actually played, since this
program will have constructed them.

(However, this could be called on demand by the game
program to set up a custom arrangement.)

Status:  Working as of July 9, 2010
 --S. T.

'''
PATH = '../Transcentration/'

# Read in a file containing a list of image files to use.
image_list_file = open(PATH+'ORIGINALS/active-images-list.txt', 'r')
image_files = image_list_file.readlines()

formula_list_file = open(PATH+'TRANSFORMED/active-formulas-list.txt', 'r')
formulas = formula_list_file.readlines()

i = 0
for line in image_files:
  line = line[:-1]
  print line
  formula_line = formulas[i][:-1]
  i += 1
  comment = True
  if formula_line[0]!='#': comment = False
  while comment:
    formula_line = formulas[i][:-1]
    i += 1
    comment = True
    if formula_line[0]!='#': comment = False

  print formula_line
  pos = formula_line.find(':')
  formula_name = formula_line[:pos]
  formula = formula_line[pos+1:]
  transname = formula_name
  new_name = line[:-4]+'-'+transname+'.png'
  # Check to see if the transformed image file already exists.
  try:
    file = open(PATH+'TRANSFORMED/'+new_name, 'r');
    exists = True
  except: exists = False
  # If not, then create it:
  if not exists:
    win1 = pmOpenTwo(PATH+'ORIGINALS/'+line)
    win2= win1+1 # pmCloneImage(win1)
    pmSetSource1(win1)
    pmSetDestination(win2)
    pmSetFormula(formula)
    pmCompute()
    pmSaveImageAs(win2, PATH+'TRANSFORMED/'+new_name);
    print 'Wrote image file: '+PATH+'TRANSFORMED/'+new_name
  else:
    print 'The file: '+PATH+'TRANSFORMED/'+new_name+' already exists.'