[TeX-music] Interstaff barlines at mid notes

[Christian Mondrup]

Dear all.

In a posting a few days ago I commented the subject of forced interstaff barlines raised by J.J.R�torr�. In my posting I asked for advice on determining the standard width of musixtex bar lines in order to make manually drawn barlines conform with the ordinarily drawn lines. Noone seems to know about that value, which probably isn't that important.

With substantial help from J.J.R�torr I've now managed to typeset a short choral setting by Michael Praetorius, 'Christe der du bist Tag und Licht' (see Praetorius page) featuring manually drawn bar lines in cases where note values cross barlines. The drawing is done by means of a hew macros from the pstricks macro collection coming with standard TeX distributions. This technique has been mixed with the \interbarrules macro from musixlit.tex where no note values cross bars.

The idea is to set meters long enough to contain a section of the composition in which notevalues cross the 'logical' bars and then afterwards draw lines manually at proper places, ie. at the logical bars. The effect of that is that all notes are conforming to the orginal source (here separate part books) having *no barlines* while 'standard' typesetting repesents such note values by splitting and tying notes across bars.

The pstricks macro collection contains methods to save nodes (x,y coordinates) within a page (eg. \pnode). Then later lines can be drawn connecting pairs of nodes (eg. \pcline). Thus you only need to save the x-coordinate of a given note event (and offset it suitably), the y-coordinate of the lower staff line of a given staff and the y-coordinate of the upper staff line of the neigbouring lower staff in order to draw a vertical line connecting the 2 staves. You don't need to know the actual space between the staves in question. I've arbitrarily set the width of these pstricks lines to 0.4 pt and am not able to visually determine any difference of width compared to all other lines drawn by musixtex.

Since this score has the special purpose of demonstrating the pstrics barline drawing technique I've published the M-Tx source of this typesetting separately along with the score while the remaining typesettings of that series have their sources bundled in one single zip file.

Comments and suggestions are welcome.

Bye
--
Christian Mondrup, Computer Programmer
Scandiatransplant, Skejby Hospital, University Hospital of Aarhus
Brendstrupgaardsvej, DK 8200 Aarhus N, Denmark
Phone: +45 89 49 53 01 - http://www.scandiatransplant.org

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