Re: FLASH: How do you make Gifs with clear sections?

[John Croteau]

Hi Marc,


> >Unfortunately, Flash only

> >recognizes the Gif 89a transparency if it is set for Index Zero, so you

> >must set the color you want to be transparent as the Zero Index color

> >(upper left color on the palette) before you export the GIF for use in

> >Flash.

> I want to make sure I'm clear about this: are you talking about the palette

> in Flash?

No, the GIF palette in the bitmap program such as Photoshop or

PaintShop.


> So let's say I'm exporting the Gif89a from PhotoShop.  I would

> make sure the transparency color is black in Photoshop, since that's the

> upper left color in the Flash palette?

No, The Zero Index (the upper left color in the Color Table in

Photoshop) might be any color. The vector color Table in Flash is

irrelavent; also note that the color table in Flash is customizable so

it's possible that the upper left color is not Black on some users'

Flash palettes.


> Or, alternatively, I could change the values of the upper left color

> in Flash to whatever the transparency color is,

This has no effect on an imported bitmap or its transparency.


> I'd have to do this before import?

Actually, you need to do this in the bitmap program before exporting the

image. Then on export from the bitmap program you set the Transparency

Export to Index Zero (upper left).


Then when you import into Flash and the Gif is transparent.


Hint: The upper left color in the Photoshop Swatches may or may not be

Index Zero. You need to go to the Color Table (Mode > Color Table in

PhotoShop 4.2) to determine what the Index Zero (0) color is.


-----------                               -----------------------

John Croteau

croteauerols [dot] com (mailto:croteauerols [dot] com)

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