Bojil, Can you use colorTransform to invert the colour values, then do a merge()?
Ian On 8/21/07, Bojil Vassilev <[EMAIL PROTECTED]> wrote: > > Hey List, > > I have BitmapData A and BitmapData B; > Is there a fast routine that from every pixel in A will subtract the > color of the coresponding pixel in B? > I'm looking for a solution using the built-in BitmapData functions, > since a manual looop on every pixel will be somewhat intensive (even if > I use the getPixels>loop ByteArray>setPixels hack to set the pixels, > instead of a setPixel() loop); > > BitmapData.merge() is a nice and fast way to add pixels from one bitmap > to another, specifing te amount to be added via a Multiplier param. It > would be cool if one can set a multiplier of a negative value, which > will result in substracting the amount instead of adding it, but that's > not possible. > > Maybe a soluton is to have the display object of BitmapData A stacked > above that of BitmapData B, with some BlendMode setting (SCREEN?) that > will subtract B pixels from A pixels? > Other ideas? > > Thanks, > Bojil > > > > > > _______________________________________________ > 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 > _______________________________________________ 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
