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From: keithd@cadovax.UUCP (Keith Doyle)
Newsgroups: comp.sys.amiga
Subject: Re: Layers Lib./Clipping
Message-ID: <1897@cadovax.UUCP>
Date: Wed, 2-Dec-87 13:43:17 EST
Article-I.D.: cadovax.1897
Posted: Wed Dec  2 13:43:17 1987
Date-Received: Sun, 6-Dec-87 08:48:53 EST
References: <8712010903.AA22789@cory.Berkeley.EDU>
Reply-To: keithd@cadovax.UUCP (Keith Doyle)
Organization: Contel Business Systems, Torrance, CA
Lines: 14

In article <8712010903.AA22789@cory.Berkeley.EDU> dillon@CORY.BERKELEY.EDU (Matt Dillon) writes:
>	All windows created with OpenWindow() automatically use the
>layers library and clip.  The rastport in the screen structure does not
>use the layers library and thus does not clip.  Usually one opens a 
>custom screen, then a backdrop window, rendering into the window.

Somehow I don't think this is competely true.  I've opened a full screen
BORDERLESS | BACKDROP window and used ellipse/circle to render into it,
and later found the parts of circles that had extended off screen sitting
in other buffers.  Not sure just where clipping is done and isn't, but
it does lead me to believe it's not automatic on all OpenWindow() windows.

Keith Doyle
#  {ucbvax,decvax}!trwrb!cadovax!keithd  Contel Business Systems 213-323-8170