Re: Transparency channel

At 03:08 PM 3/7/04 +0100, you wrote:
>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?
>
>> > http://studio.imagemagick.org/magick/viewtopic.php?t=1295&sid=94c8bad5d7ac3df289717ed1ba333851
>
>> As of this evening, GraphicsMagick has 'O' (opacity) and 'T'
>> (transparency) map options.  The 'T' map option does the same thing
>> as the previously existing (and still existing) 'A' option, but its
>> meaning should be more clear.
>
>> The constitute tests still pass.
>
>> Let me know if you experience any problems.
>
>No, it works great!  Thanks a bunch for updating it.
>
>> If you can tell me the map strings that TclMagick uses, I can add a
>> special case to make it faster.
>
>"RGBO" (and it's TkMagick, by the way - TclMagick doesn't depend on Tk
>and, as a consequence, some kind of windowing system).

For consistency, should the -ordered-dither and -random-threshold
operations understand "RGB" and "O" as synonyms for "intensity"
and "opacity" channel-types?

Glenn


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