Terry Hancock schrieb: > On Saturday 24 September 2005 03:17 am, Kris Schnee wrote: > >>flya flya wrote: >> >>>some gif file has many frames to paly animation,Can pygame load these >>>frames? and do the animation? >> >>Yes. Load the GIF as a Surface. Make a bunch of Rect objects >>representing where in the image each frame is. Use those as clipping >>regions. > > > Are you saying that the loader will automatically load the animated > GIF by separating each frame out spatially on the Surface? If so, it > has to be pretty smart, and these aren't sufficient instructions for > figuring out what it does. > > We're talking about a multi-frame format in the GIF, not frames spread > out on a static GIF. There is no such thing as "where in the image > each frame is" -- they are in the same place, they are separated by > *time* (i.e. frame number), and therefore by where they are stored in > the file, but there's no such thing as a separate clipping rectangle > for each frame as you seem to be imagining. > > Most single-frame image tools only load the *first* frame of an animated > GIF and ignore the rest. I would naively suspect that this is what will > happen if you try to load one with PIL (which I think is what you must > do to load any image into PyGame unless it's in Microsoft BMP format -- > which I must say seems like a strange choice of native format ;-) ), > but I haven't tried it myself, so I'm not sure. > > You can do some trickery on the command line to change an animated GIF > to the kind of format you are thinking of, using ImageMagick, though > I'd have to spend some time with the man pages to figure out how. You > might be able to do the same with PIL, though I have doubts, since PIL > doesn't provide all that much support for GIF. Attached is an example script that loads an animated gif from the filename given on the command line and turns it's frames into a list of pygame surfaces. You can then use this list for creating an animated sprite (look in the pygame code repository for how to do that) HTH, Chris P.S. I don't know, if this code will handle transparency properly. Probably you have to set it on each surface manually.
import Image
import pygame
OUTPUT_FORMAT='png'
def load_gif_anim(file, mode="P"):
img = Image.open(file)
l = []; i = 0
while True:
try:
img.seek(i)
except EOFError:
break
pg_surf = pygame.image.frombuffer(img.tostring("raw", mode),
img.size, mode)
l.append(pg_surf)
i += 1
return l
if __name__ == '__main__':
import sys
print load_gif_anim(sys.argv[1])
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