'''MakePhotomosaicDBImage.py
This is a program to create a big tiled image of macropixels for
use in creating Photomosaics.
'''
def makeInitialDBImage():
  # The prefix specifies the folder of tile images.
  prefix = 'Flower-tiles-128/'
  image_list_file = open(prefix + 'image-list.txt', 'r')

  all_image_filenames = image_list_file.read()

  filenames = all_image_filenames.split('\n')
  storageWindow = pmNewImage(0, 'Macro-pixel Storage Image',\
                             2048, 1024, 0,0,0)
  miniImageWindow = pmNewImage(0, 'Tile Image', 128, 128, 0,0,0)
  pmSetSource1(storageWindow)
  pmSetSource2(miniImageWindow)
  pmSetDestination(storageWindow)
  row = 0; col = 0
  for fn in filenames:
    if fn=='': continue
    print 'This filename is ' + fn
    pmOpenImage(miniImageWindow, prefix + fn)
    formula = 'S1(x,y)+if {floor(x/128)='+str(col)+\
              ' and floor(y/128)='+str(row)+\
              '} then S2(x mod 128, y mod 128) else 0'
    print formula
    pmSetFormula(formula)
    pmCompute()
    row += 1
    if row==8:  row=0; col+=1

makeInitialDBImage()