Re: Transparency channel

Bob Friesenhahn <[email protected]> writes:

> On 1 Mar 2004, David N. Welton wrote:

> > According to this, the IM guy(s) implemented the 'O' mapping for
> > MagickGetImagePixels - could that be added to GM as well?

> It is not difficult to implement.  I am currently on a business trip
> so it will need to wait until my return, unless of course you are
> willing to implement it yourself (you *do* have cvs commit access),
> or some other GM developer works on it. If you choose to implement
> it yourself, make sure that the function description is updated
> appropriately.

I'm looking at it.

*) ImageMagick chose the name OpacityQuantum for 'O', whereas 'A' in
 GM corresponds to an OpacityMapQuantum.

*) If we use 'T' for transparency, that ought to have a
 TransparencyMapQuantum, no?  But 'T' is equivalent to 'A' which
 already has OpacityMapQuantum.

So what should the MapQuantum type be?

Thanks,
-- 
David N. Welton
   Consulting: http://www.dedasys.com/
     Personal: http://www.dedasys.com/davidw/
Free Software: http://www.dedasys.com/freesoftware/
   Apache Tcl: http://tcl.apache.org/


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