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From: Mark Carroll <mtbc@bcs.org>
Newsgroups: comp.lang.postscript
Subject: Re: How to get smote lines
Date: Wed, 26 Mar 2014 21:49:31 +0000
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Cecil Westerhof <Cecil@decebal.nl> writes:
(snip)
>     30 12 90 {
(snip)
>             stroke
>         grestore
>     } for
>
>     showpage
>
> But I noticed that the connection is not smooth.
(snip)

setlinejoin and setlinecap are worth knowing about: here if you start
out with a 2 setlinecap then it goes much better.

Still, notice that you are doing a few strokes here: the difference
between the join and the cap is related to where you stroke and start a
new line, instead of continuing the previous, and the connection issues
are at those boundaries.

I hope that helps.

-- Mark