reverse colortransform alpha AS3

Posted by Chris Porter on Stack Overflow See other posts from Stack Overflow or by Chris Porter
Published on 2010-01-04T12:13:48Z Indexed on 2010/05/20 19:50 UTC
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Filed under:

actionscript-3

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bitmap

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bitmapdata

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colortransform

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alpha

I'm fading out a Bitmap in AS3 by repeatedly applying a ColorTransform every frame to its BitmapData;

_bitmap.colorTransform(_bitmap.rect, new ColorTransform(1, 1, 1, .9, 0, 0, 0, 1));

When applying the apparent reverse to fade it back in I get a discoloured image.

_bitmap.colorTransform(_bitmap.rect, new ColorTransform(1, 1, 1, 1.1, 0, 0, 0, 1));

The problem appears to occur only to fully faded-out images. If I only go part way it is recoverable.

fading out:

AS3 ColorTransForm Fading out

faded back

AS3 ColorTransform problem

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