thanks - thats 10 ms faster each operation. Olli
2007/4/5, Mark Winterhalder <[EMAIL PROTECTED]>:
On 4/5/07, Oliver Müller <[EMAIL PROTECTED]> wrote: > Hi, > I want to change the alpha channel of an 32bit integer. > At the moment I extract every color channel, change the alpha and then > put them together at the end. > > (alpha << 24) | (red << 16) | (green << 8) | blue ) > > How can I change the alpha channel directly ? You could...: color = (color & (-1 >>> 8)) | (alpha << 24); ...but I'm not sure if that would be better. Mark _______________________________________________ [email protected] 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
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