Re: FLASH: alpha channels and masking in flash - help needed

[John Croteau]

Hi Tim,


> I have a series of 25 bitmaps, part of an animation sequence of a (you

> guessed it) globe spinning around.

> It is rendered onto a black background.And as a series of bitmaps, the swf

> size is about 10k (great!!)

> I need the globe to be used over various backgrounds, so I need a way of

> removing the black area. Tracing the bitmap and remvoing the black area

> increases the file size so much it is unusable.

> Is there a file format the flash recognises that uses alpha channels??


Indexed color (color set of image has to be reduced to 256 colors or

less).

   GIF

   PNG 8 bit version


Alpha channel - Increased file size

   BMP - 32 bit versions

   PNG - 32 bit versions (some times called 24 bit with 8 bit Alpha)


Bitmaps should generally be used in fixed sized situations.


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John Croteau

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

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