Groups > comp.lang.postscript > #2028

Re: How to make things like Celtic borders

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From	Cecil Westerhof <Cecil@decebal.nl>
Newsgroups	comp.lang.postscript
Subject	Re: How to make things like Celtic borders
Organization	Decebal Computing
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Date	Sat, 06 Sep 2014 14:24:49 +0200
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Op Saturday 6 Sep 2014 07:44 CEST schreef tlvp:

> On Fri, 05 Sep 2014 22:16:29 +0200, Cecil Westerhof wrote:
>
>> Anybody pointers about how to do that?
>
> For knots and braids, generally, with over- and under-crossings, I
> can only suggest two things:
>
> 1) stroke the rope in layers, most underneath first, whatever has
> over-crossings with that next, and so on; and
>
> 2) for each such layer of rope, before stroking the black curves of
> the two edges of the rope at that layer, produce the closed path
> consisting of the first edge from beginning to end, the lineto the
> nearest point of the second edge, the second edge itself, and the
> closepath command (giving you the lineto the starting point of the
> first edge), and fill that with white (otherwise your rope will seem
> "transparent" :-) ).
>
> I can offer you a code illustration if you like, but I suspect
> you'll understand well enough that you won't really need that.

Well, I am not a postscript expert yet and certainly a newbie on
drawing graphics. So a code illustration to get me started would be
appreciated very much.

-- 
Cecil Westerhof
Senior Software Engineer
LinkedIn: http://www.linkedin.com/in/cecilwesterhof

Thread

How to make things like Celtic borders Cecil Westerhof <Cecil@decebal.nl> - 2014-09-05 22:16 +0200
  Re: How to make things like Celtic borders tlvp <mPiOsUcB.EtLlLvEp@att.net> - 2014-09-06 01:44 -0400
    Re: How to make things like Celtic borders Cecil Westerhof <Cecil@decebal.nl> - 2014-09-06 14:24 +0200
      Re: How to make things like Celtic borders jdaw1 <jdawiseman@gmail.com> - 2014-09-06 11:14 -0700
      Re: How to make things like Celtic borders tlvp <mPiOsUcB.EtLlLvEp@att.net> - 2014-09-06 15:03 -0400
        Re: How to make things like Celtic borders Eli the Bearded <*@eli.users.panix.com> - 2014-09-10 18:53 +0000
          Re: How to make things like Celtic borders tlvp <mPiOsUcB.EtLlLvEp@att.net> - 2014-09-10 20:49 -0400

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