Article View: comp.sys.mac
Article #43128Re: color startup and backdrop screens for MacII
From: Dave Platt
Date: Sat, 27 May 1989 19:05
Date: Sat, 27 May 1989 19:05
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2027 bytes
In article <18846@cup.portal.com> Fabian@cup.portal.com (Fabian Fabe Ramirez) writes:
> For "backdrops," there's DeskPICT (shareware) and Microseed's ColorDesk,
> a part of the commercial package Screen Gems. Either will let you use
> PICT files for desktops. Note that these should be create with the
> System palette.
Here's my dream: a backdrop-INIT that would take a PICT file containing
arbitrary colors, and would dither it into a near-equivalent image using
only the system-palette colors.
This should be relatively easy to do if the 32-bit Color QuickDraw
extensions are installed, as the patches to CopyBits implement
dithering. I was very impressed by how well the dithering works... a
24-bit color image looks very good when dithered into the 8-bit-deep
default palette, and looks acceptable even when dithered into a 4-bit
color environment. Well done, Apple!
I'd even settle for a a utility-application that could take a standard
PICT file, expand it to 24 bits, dither it down to 8, and save the
resulting PICT in another file. This utility, used as a back end to
Giffer or PixelPaint, could be used to create some really stunning
full-color-range startup screens.
Hmmm... I think I just defined my next programming project!
--
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!sun-barr!ames!coherent!dplatt From: dplatt@coherent.com (Dave Platt) Newsgroups: comp.sys.mac Subject: Re: color startup and backdrop screens for MacII Message-ID: <25602@coherent.com> Date: 27 May 89 19:05:48 GMT References: <40487@bbn.COM> <18846@cup.portal.com> Reply-To: dplatt@coherent.com (Dave Platt) Distribution: usa Organization: Coherent Thought Inc., Palo Alto CA Lines: 32