Andre's example looks good, but if we could solve the stemlength and
parasitic beam problems in Jean-Pierre's version, it would be better,
because it only uses one beam, and with that only one slope. There's no need
to calculate starting heights for later overlapping beams, and you can
adjust the slope with just one parameter change, and keep the same relative
vertical positions of the various beam segments.
On the stemlength issue, I tried this, but it doesn't work as I obviously
intended. When I make the adjustment positive, it then has an effect, but
not what I'd expect. And if I try adjusting \st@top directly, other weird
things happen.
================================
\input musixtex
\nostartrule
\makeatletter
\global\let\bst\beamst@m\gdef\beamst@m{\bst\advance\y@ii-2\interbeam\st@top\
y@ii\global\let\beamst@m\bst}
\makeatother
\startextract
%\notes\ibu0l{-1}\nbbu0\nbbbu0\qb0{jhi}\tbbbu0\qb0e\hqsk\en
\notes\ibbbu0j{-1}\qb0{jhi}\tbbbu0\qb0e\hqsk\en
\notes\nbbbu0\qb0{_i}\tbbu0\tbbbu0\nbbbu0\qb0e\en
\notes\nbbu0\qb0h\tbbbu0\qb0c\hqsk\en
\notes\nbbbu0\qb0{^ge}\hqsk\qb0{=g}\tbbbu0\tbbu0\loffset{30}{\tbu0}\qb0c\en
\zendextract
\end
===============================
--Don
>-----Original Message-----
>From: TeX-Music [mailto:[email protected]] On Behalf Of Andre Van
>Ryckeghem
>Sent: Thursday, May 01, 2014 9:57 PM
>To: Werner Icking Music Archive
>Subject: Re: [Tex-music] LilyPond blog invites you to an
engravingchallenge! :-)
>
>Dear Jean-Pierre and Don,
>
>For removing the parasitic beam, i think, you need a \tbu0 somewhere
>for shortening the stems perhaps you may use \stemlenght{n} before each
note
>(i did not tested it in the example)
>In musixtex you must start with the maximum number of beams and the longest
>beam must be the upper one.
>
>But the proposed method can perhaps be used for the lilipond challenge:
>==================
>\input musixtex
>\nostartrule
>
>\startextract
>\notes\ibbu0l{-1}\qb0{jhi}\tbbu0\qb0e\hqsk\en
>\notes\ibu1k{-1}\qb0{_i}\tbu0\qb0e\en
>\notes\ibu0l{-1}\qb0h\tbu1\qb0c\hqsk\en
>\notes\ibu1j{-1}\qb0{^ge}\hqsk\qb0{=g}\tbu0\tbu1{\tbu0}\qb0c\en
>\zendextract
>
>\end
>===================
>
>Andre
>
>-----Oorspronkelijk bericht-----
>From: Don Simons
>Sent: Friday, May 02, 2014 12:40 AM
>To: 'Werner Icking Music Archive'
>Subject: Re: [Tex-music] LilyPond blog invites you to an
engravingchallenge!
>:-)
>
>Very clever! Your method lets musixtex compute starting heights for all the
>re-started beam segments.
>
>Sorry, I can't answer either question. For stem lengths, you could try to
>find the code in musixtex.tex that draws them, and then replace that with
>code that stops the upper part 2\interbeam (?) shorter.
>
>Why didn't you start it with \ibbbu0j{-1} rather than
>\ibu0l{-1}\nbbu0\nbbbu0 ? It seems to give the same result.
>
>I don't have a clue about the "parasitic" beam segment.
>
>--Don
>
>>-----Original Message-----
>>From: TeX-Music [mailto:[email protected]] On Behalf Of
Jean-Pierre
>>Coulon
>>Sent: Thursday, May 01, 2014 3:01 AM
>>To: Werner Icking Music Archive
>>Subject: Re: [Tex-music] LilyPond blog invites you to an engraving
>challenge! :-)
>>
>>I almost obtained the snippet of the challenge with the attached source by
>>adding a "temporary" third beam. I intentionally let the beginning portion
>>of this 3rd beam so you understand the logic, but you can get rid of it
>>saying a \loffset bigger than 24 or so at line #8.
>>
>>But: 1: does anybody know where the "parasitic" beam portion below the
>>staff comes from?
>>
>>2: how to shorten stemlenghts so they do no climb above the 2nd beam?
>>
>>Otherwise my process would be easier than yours to put into a macro
>>because it's difficult to write a macro that does something at <pitch p>
>>*and* <pitch p+1>
>>
>>Bye
>>
>>Jean-Pierre Coulon
>
>
>
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