Am Montag, 12. März 2001 21:59 hast du geschrieben:
> If you want fading to backgroud, you are basically out of luck until PNGs
> are more fully supported. (GIFs don't work because it only has
> transparency on or off, no fading).
>
> What I now do is have a GIMP XCF file with the "top" layer fading to
> transparent as I want, and a background layer that I can change at will.
> Thus for my pale yellow backround web pages, I can creat a new
> non-transparent JPEG which fades to my pale yellow. For a white
> background, I create another JPEG which fades to white, etc.
>
> This isn't ideal, for all of the obvious reasons, but it does work for
> most usages.
There is a better workaround since we have true transparency for web
images. It has the disadvantage to only work with simple backgrounds,
though.
there are two layers: one with your image an one with the (simple)
background of the webpage.
Then "alpha -> selection" and save the selection into a channel.
combine the two layers.
invert the selection (after you get it back from the channel) and cut the
background.
Then you have a simple alpha, a region where the alpha fading is combined
with the background and the picture.
Now there is only the problem to convert the RGB image to indexed. The
advantage: There is no border between the image and the webpage background
(sometimes image colors are different from the same colors in images).
Uwe
--
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http://rcswww.urz.tu-dresden.de/~koloska/
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