in article [EMAIL PROTECTED], Jefferson R. Lowrey at
[EMAIL PROTECTED] wrote on 27/01/2003 18:33:

> It wasn't clear that your pictures were actually colored.  The example I
> received was black and white, with no color distinctions between each 'piece'.
> Thus the desire to distinguish each piece with a different color.
> 
>> A code example of how to read the value of a pixel would be great -
>> basically is what I don't know how to code.
> 
> If you look at http://www.macperl.com/depts/code/_kpreid/, you'll find a
> number of sample programs and scripts written by Kevin Reid that make use of
> the MacTooolbox to do image manipulation.  Particularly the Dither Tool will
> get you fairly close to where you probably want to be.

Yes, I grabbed it, thanks for pointing it out.

> Once you've got a pointer to the GrafPort Pixel Map, you can access the pixels
> by index (as an array).  Then you can get various color information and etc.

I think I got the idea. For the big picture, I have also downloaded IM:
Imaging With QuickDraw, which I should read before to monkeying with the
ToolBox.

Ciao,
Ricardo

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