Vyatcheslav Yatskovsky wrote:

Please, help me with it.

I usually tackle this sort of thing by first drawing the entire image in metapost code alone. Then, when that works, write a tex command that fills in bits and pieces of the metapost image. Best wishes, Taco

On Fri, 09 Apr 2010 21:05:06 +0300 Vyatcheslav Yatskovsky scribit:

Hello,

I have interesting task. I want to build a picture of a guitar chord using metapost.

For now, I only knew how to make a chord grid:

\startreusableMPgraphic{chordgrid} drawoptions(withpen pencircle scaled 0.4pt withcolor black) ; draw hlingrid(0, 5, 1, 0.8cm, 1cm) ; draw vlingrid(0, 4, 1, 1cm, 0.8cm) ; \stopreusableMPgraphic

\define[0]\ChGrid{\dontleavehmode\useMPgraphic{chordgrid}\hskip2mm}

\starttext \ChGrid \stoptext

I need to change it so that I could specify fret numbers, i.e. six numbers for each string, and draw a filled circles in these positions.

I've started with a command like this

\define[6]\Ch{\dontleavehmode\useMPgraphic{chordgrid}...

I'm not sure what to do next... How to pass these parameters into MP, how to organize the loop...

For a test, \Ch[1][3][1][2][1][1] should produce

|-O-|---|---|---| |-O-|---|---|---| |---|-O-|---|---| |-O-|---|---|---| |---|---|-O-|---| |-O-|---|---|---|

Please, help me with it.

Lilypond ?

-- Best Regards, Vyatcheslav Yatskovsky ___________________________________________________________________________________ If your question is of interest to others as well, please add an entry to the Wiki!

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