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sunset

# Take a picture and make it gradually appear warmer/darker, simulating sunset
# This takes a long while to run
def makeSunsetMovie(pic):

  for frameNumber in range(100): # 100 frames from 00 to 99

    # A progress report to reassure us that the program really is working
    printNow("Working on frame number " + str(frameNumber) + " of 100.")

    # Make the frame warmer by a very small amount
    # Since we are not copying the picture afresh for each frame, these color shifts
    # will accumulate from frame to frame
    amt = 0.99 # Experiment with this. Smaller number will make sunset happen faster
    for p in getPixels(pic):
      setGreen(p, getGreen(p)*amt)
      setBlue(p, getBlue(p)*amt)  

    # Write color-shifted picture as a frame for the movie
    numerals = str(frameNumber)
    if frameNumber < 10:
      numerals = "0" + numerals
    fileName = "sunset" + numerals + ".jpg"
    writePictureTo(pic, getMediaPath(fileName))

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• Slides and Code- Spring 2008 last edited on 23 April 2008 at 11:00 am by lawn-128-61-23-153.lawn.gatech.edu