I'm applying a threshold() to a BitmapData instance and then using copyChannel() to copy it's red channel to the alpha channel of a different BitmapData instance. This is part of a technique I'm using to animate simulated brush strokes without any kind of tweens (just gradations). Much easier on the processor. Anyway, I whipped together a simple FLA file that isolates the problem (no brush strokes, sorry). Download the FLA at:
http://www.greensock.com/threshold_bug.zip Publish the file and you'll see it work. But that's only because I implemented a hack on line 31 (copying pixels back in from a stored copy). Remove line 31 and you'll see the problem immediately. All of the pretty red/green/blue pixels that have ever been made transparent during the course of the animation (using the threshold()/copyChannel() technique) turn black and stay that way! No idea why. Am I doomed to a life of hacks? Is my code somehow flawed? Help? This project has to be finished in a matter of hours, so I'd appreciate your prompt responses. I'd be happy to share the final brush stroke effect with anyone who is interested once I get it working (I'm close). Jack _______________________________________________ Flashcoders@chattyfig.figleaf.com To change your subscription options or search the archive: http://chattyfig.figleaf.com/mailman/listinfo/flashcoders Brought to you by Fig Leaf Software Premier Authorized Adobe Consulting and Training http://www.figleaf.com http://training.figleaf.com
