Hi, hope this helps: # Get your gif routes gifsFolder = '.' # Your gifs directory gifs = ['gif1.gif', 'gif2.gif'] # These are the files I'll use gifPaths = [f'{gifsFolder}/{gif}' for gif in gifs] # Create the paths for your with string formattingx # Create a function to interpolate between gifs def scaleFactor(path, pageNumber, canvasSize): # Get a scale factor to match the canvas size you want gifw, gifh = imageSize(path, pageNumber=pageNumber) factorMeasure = gifw if gifw > gifh: factorMeasure = gifh return canvasSize / factorMeasure def gifTransition(path1, path2): # Canvas and images dimensions w, h = 200, 200 # Canvas size # Define your frames introFrames = numberOfPages(path1) endingFrames = numberOfPages(path2) crossfadeFrames = 12 # Change this value for a longer transition totalFrames = int( (introFrames - crossfadeFrames/2)+(endingFrames - crossfadeFrames/2) ) # Get the total frames by merging the crossfade in the middle # Make a loop for the animation gif1Frames, gif2Frames = 0, 0 gif1alpha, gif2alpha = 1, 0 for frame in range(1, totalFrames+1): newPage(w, h) fill(1) rect(0, 0, w, h) with savedState(): scale(scaleFactor(path1, gif1Frames, w)) image(path1, (0, 0), pageNumber=gif1Frames, alpha=gif1alpha) if gif1Frames < introFrames: gif1Frames += 1 if frame > introFrames - crossfadeFrames/2: # Run the second gif with savedState(): scale(scaleFactor(path2, gif2Frames, w)) image(path2, (0, 0), pageNumber=gif2Frames, alpha=gif2alpha) gif2Frames += 1 if gif1alpha >= 0 or gif2alpha <= 1: # Crossfade transparency gif1alpha -= 1 / crossfadeFrames gif2alpha += 1 / crossfadeFrames gifTransition(gifPaths[0], gifPaths[1]) # Call the function saveImage('~/Desktop/gifCrossfade.gif') # Save your gif

@frederik it works!thanks!!!

I'm not a color or gif expert. But this works: # see http://www.cocoabuilder.com/archive/cocoa/104713-nsimagergbcolortable-crash.html newPage(100, 100) linearGradient( (0, 0), # startPoint (100, 100), # endPoint [(1, 0, 0), (0, 0, 1), (0, 1, 0)], # colors [0, .2, 1] # locations ) rect(0, 0, 100, 100) fill(1, 0, 0) rect(20, 20, 20, 20) fill(0, 1, 0) rect(100-40, 20, 20, 20) fill(0, 0, 1) rect(100-40, 100-40, 20, 20) fill(0, 1, 1) rect(20, 100-40, 20, 20) import struct table = b"" for i in range(256): r = struct.pack(">B", 30) g = struct.pack(">B", i) b = struct.pack(">B", 255) #a = struct.pack(">B", 254) # use if imageGIFDitherTransparency is True table += r + g + b # + a # table must have a size of 768 # or 1024 when imageGIFDitherTransparency is True print(len(table)) test = '~/Desktop/testGif.gif' saveImage(test, imageGIFRGBColorTable=table) newPage(100, 100) image(test, (0, 0))