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Article #6815Re: Flopping line in MacPaint (rubberband line)
From: marchesi
Date: Fri, 15 Aug 1986 14:51
Date: Fri, 15 Aug 1986 14:51
26 lines
1469 bytes
1469 bytes
In article <208@bridge2.UUCP> pvf@bridge2.UUCP writes:
>.........
>The rubberband line is a simple call to polyline with the XOR writing
>mode enabled. All you have to do is draw the line from the fixed point
>to the variable point, under XOR writing mode:
>
> 1) When the variable point selector moves to a point, and,
> 2) When the variable point selector moves off that point.
>
>Of course, this means that each line is "drawn" twice. First, to
>make it visible, then again to make it invisible.
>.........
...again: MacPaint does *NOT* XOR...... (but I'd like to learn how
it really works without having to trace it down myself...)
pp
----------------------------------------------------------------------------
Paolo Petta
p-mail: DD Division
CERN
CH-1211 Geneva 23
Switzerland
e-mail: ...{seismo,philabs,decvax,...}!mcvax!cernvax!marchesi
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Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: arc1-ca.pugleaf.net!utzoo!mnetor!seismo!mcvax!cernvax!marchesi From: marchesi@cernvax.UUCP (marchesi) Newsgroups: net.micro.mac Subject: Re: Flopping line in MacPaint (rubberband line) Message-ID: <363@cernvax.UUCP> Date: Fri, 15-Aug-86 10:51:02 EDT Article-I.D.: cernvax.363 Posted: Fri Aug 15 10:51:02 1986 Date-Received: Sun, 17-Aug-86 06:15:01 EDT References: <2693@mit-hermes.ARPA> <1232@trwrb.UUCP> <208@bridge2.UUCP> Reply-To: marchesi@cernvax.UUCP () Distribution: net Organization: CERN, Geneva/Switzerland Lines: 27