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From: bryce@COGSCI.BERKELEY.EDU (Bryce Nesbitt)
Newsgroups: comp.sys.amiga
Subject: Re: DropShadow
Message-ID: <8704300747.AA07160@cogsci.berkeley.edu>
Date: Thu, 30-Apr-87 03:47:40 EDT
Article-I.D.: cogsci.8704300747.AA07160
Posted: Thu Apr 30 03:47:40 1987
Date-Received: Sat, 2-May-87 06:51:54 EDT
Sender: daemon@ucbvax.BERKELEY.EDU
Reply-To: cogsci.berkeley.edu!bryce@cogsci.berkeley.edu (Bryce Nesbitt)
Lines: 42
Summary: Here's who wrote it.

In article <1555@solar.STANFORD.EDU> shf@solar.UUCP (Stuart Ferguson) writes:
>[why not] include _DropShadow_ [in V1.3]?  I still find that one
>of the neatest demos for the Amiga, as well as a great enhancement to
>
>By the way, does anyone know how that program works?  [...]
>* I'd credit _DS_'s author here, but he didn't sign his name to his product.
>Perhaps someone who knows can fill in the blank.

Sure! Here is an excerpt from the manual that comes with dropshadow V2.0:
and yes, dropshadow *LOOKS AWESOME!*




DropShadow V2 Rev 0 (C) Copyright James Mackraz, 1987
this version may be freely redistibuted
-----   -----------------------------------------   -----
Notes for Version 2, Revision 0                     April 7, 1987
Added the following from the wish list:

-A slider gadget is implemented to adjust the 3-dimensional
-distance between the planes of the windows.

-A slider gadget is implemented to adjust shadow darkness.  If
-desired, full independent control of the shadow colors is
-possible.
-----   -----------------------------------------   -----
Notes for Version 1, Revision 1                     March 12,1987

-When Windows are moved, created, sized, deleted, or depth-
-arranged, Intuition calls layers.library.  This program
-intercepts those calls to determine that the shadow needs
-to be recalculated.  Before this version, this recalculating
-and redrawing was done before Intuition got a chance to
-redraw Window borders and Gadgets.

-This version of DropShadow performs the work on its schedule,
-and is only signaled by the code which intercepts the
-layers calls.  This makes for a smoother and less dangerous
-implementation.

-Best with FAST ram, too slow otherwise.