* Re: Building a guitar chord using MP [not found] <mailman.466.1270861320.4277.ntg-context@ntg.nl> @ 2010-04-10 9:56 ` Vyatcheslav Yatskovsky 2010-04-10 12:30 ` Taco Hoekwater 2010-04-10 10:01 ` Vyatcheslav Yatskovsky 1 sibling, 1 reply; 9+ messages in thread From: Vyatcheslav Yatskovsky @ 2010-04-10 9:56 UTC (permalink / raw) To: ntg-context > 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. I understand your idea. Indeed, MP code draws underlying grid. How to overlay circles on it using TeX? Please, an example. -- Best Regards, Vyatcheslav Yatskovsky ___________________________________________________________________________________ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___________________________________________________________________________________ ^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: Building a guitar chord using MP 2010-04-10 9:56 ` Building a guitar chord using MP Vyatcheslav Yatskovsky @ 2010-04-10 12:30 ` Taco Hoekwater 0 siblings, 0 replies; 9+ messages in thread From: Taco Hoekwater @ 2010-04-10 12:30 UTC (permalink / raw) To: mailing list for ConTeXt users Vyatcheslav Yatskovsky wrote: >> 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. > > I understand your idea. Indeed, MP code draws underlying grid. How to > overlay circles on it using TeX? Please, an example. First, create a metapost macro to draw a dot on a bar using two arguments. Let's assume this is "mark(a,b)". I won't write that metapost macro for you, you have to do that yourself. \startuseMPgraphic{chordgrid}{e,B,G,D,A,E} drawoptions(withpen pencircle scaled 0.4pt withcolor black) ; draw hlingrid(0, 5, 1, 0.8cm, 1cm) ; draw vlingrid(0, 4, 1, 1cm, 0.8cm) ; draw mark(1,\MPvar{e}); draw mark(2,\MPvar{B}); draw mark(3,\MPvar{G}); draw mark(4,\MPvar{D}); draw mark(5,\MPvar{A}); draw mark(6,\MPvar{E}); \stopuseMPgraphic \define[6]\Ch {\dontleavehmode \useMPgraphic{chordgrid}{e={#1},B={#2},G={#3},D={#4},A={#5},E={#6}}}% \hskip2mm} Best wishes, Taco ___________________________________________________________________________________ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___________________________________________________________________________________ ^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: Building a guitar chord using MP [not found] <mailman.466.1270861320.4277.ntg-context@ntg.nl> 2010-04-10 9:56 ` Building a guitar chord using MP Vyatcheslav Yatskovsky @ 2010-04-10 10:01 ` Vyatcheslav Yatskovsky 2010-04-10 20:26 ` Henning Hraban Ramm 1 sibling, 1 reply; 9+ messages in thread From: Vyatcheslav Yatskovsky @ 2010-04-10 10:01 UTC (permalink / raw) To: ntg-context Hi Hraban > I wouldn't use MetaPost at all (because I can't) but use LilyPond's > great possibilities... > (Never tried fret diagrams with the LilyPond module, but it should work.) I thought about it, and i have two objections (maybe, false ones) against using Lily: 1) Recently we concluded that on-the-fly insertion of Lilypond images does not work. 2) Generation of dozens of stand alone chords requires dozens of calls to lilypond, and, thus, terrifically slow. Am I right with this? -- Best Regards, Vyatcheslav Yatskovsky ___________________________________________________________________________________ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___________________________________________________________________________________ ^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: Building a guitar chord using MP 2010-04-10 10:01 ` Vyatcheslav Yatskovsky @ 2010-04-10 20:26 ` Henning Hraban Ramm 0 siblings, 0 replies; 9+ messages in thread From: Henning Hraban Ramm @ 2010-04-10 20:26 UTC (permalink / raw) To: mailing list for ConTeXt users Am 2010-04-10 um 12:01 schrieb Vyatcheslav Yatskovsky: > 1) Recently we concluded that on-the-fly insertion of Lilypond > images does not work. It should work again since a while. If you need the fret diagrams above lyrics, I'd use LilyPond without a Staff context. If you need fret diagrams dispersed in a text, then you'd have to \lower each one (i.e. I could implement a global voffset option). see also http://wiki.contextgarden.net/LilyPond#Typesetting_fret_diagrams http://lilypond.org/doc/v2.12/Documentation/user/lilypond/Common-notation-for-fretted-strings#Fret-diagram-markups http://lilypond.org/doc/v2.12/Documentation/user/lilypond/Predefined-fretboard-diagrams > 2) Generation of dozens of stand alone chords requires dozens of > calls to lilypond, and, thus, terrifically slow. > Am I right with this? Of course LilyPond would be called for every chord if you place them as snippets. But only once, as long as they don't change. Wouldn't you need to call MetaPost for every diagram? (I guess in MkIV it's a library, thus faster.) You didn't tell us what you finally want to accomplish - in your first post you talk only about one fret diagram. Oh, BTW: Can anyone explain to me, how I can implement the catcode trickery for hyphens (in http://wiki.contextgarden.net/LilyPond#Typesetting_fret_diagrams) in the module? Greetlings from Lake Constance! Hraban --- http://www.fiee.net/texnique/ http://wiki.contextgarden.net https://www.cacert.org (I'm an assurer) ___________________________________________________________________________________ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___________________________________________________________________________________ ^ permalink raw reply [flat|nested] 9+ messages in thread
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* Re: Building a guitar chord using MP [not found] <mailman.501.1271102166.4277.ntg-context@ntg.nl> @ 2010-04-12 21:57 ` Vyatcheslav Yatskovsky 0 siblings, 0 replies; 9+ messages in thread From: Vyatcheslav Yatskovsky @ 2010-04-12 21:57 UTC (permalink / raw) To: ntg-context Hurray! I've got first draft version of guitar chord building macro. (With the help of this excellent manual http://www.tug.org/docs/metapost/mpman.pdf ) % -- working version --- \startuseMPgraphic{chordgrid}{e,B,G,D,A,E} def fretmark(expr a,b) = % a = string number % b = fret number pickup pencircle scaled 3pt; drawdot(b*7-3, a*4.5-4.5); enddef; drawoptions(withpen pencircle scaled 0.4pt withcolor black) ; draw hlingrid(0, 5, 1, 0.8cm, 1cm) ; draw vlingrid(0, 4, 1, 1cm, 0.8cm) ; fretmark(1,\MPvar{e}); fretmark(2,\MPvar{B}); fretmark(3,\MPvar{G}); fretmark(4,\MPvar{D}); fretmark(5,\MPvar{A}); fretmark(6,\MPvar{E}); \stopuseMPgraphic \define[6]\Ch {\dontleavehmode \useMPgraphic{chordgrid}{e={#1},B={#2},G={#3},D={#4},A={#5},E={#6}}% \hskip2mm} \starttext \Ch{1}{3}{1}{2}{1}{4} \stoptext However, my current trouble is chord caption (like Am). Except wrong placement of the label, adding seventh non-numerical argument to the macro throws an error. % -- does not work --- \startuseMPgraphic{chordgrid}{e,B,G,D,A,E,Cptn} def fretmark(expr a,b) = % a = string number % b = fret number pickup pencircle scaled 3pt; drawdot(b*7-3, a*4.5-4.5); enddef; drawoptions(withpen pencircle scaled 0.4pt withcolor black) ; draw hlingrid(0, 5, 1, 0.8cm, 1cm) ; draw vlingrid(0, 4, 1, 1cm, 0.8cm) ; fretmark(1,\MPvar{e}); fretmark(2,\MPvar{B}); fretmark(3,\MPvar{G}); fretmark(4,\MPvar{D}); fretmark(5,\MPvar{A}); fretmark(6,\MPvar{E}); label.top(\MPvar{Cptn}, (2,0)); \stopuseMPgraphic \define[7]\Ch {\dontleavehmode \useMPgraphic{chordgrid}{e={#1},B={#2},G={#3},D={#4},A={#5},E={#6},Cptn={#7}}% \hskip2mm} \starttext \Ch{1}{3}{1}{2}{1}{4}{Am} \stoptext ! Missing number, treated as zero. <to be read again> A \theMPvariable ->A m <argument> ...\hbox {\scratchdimen \theMPvariable sp}\ifdim \wd \scratchbox ... \secondoftwoarguments #1#2->#2 \prepareMPvariable ...epareMPvariable {\@@meta #1} \fi \next1 #1,->\prepareMPvariable {#1} \doprocesscommaitem ... l.29 \Ch{1}{3}{1}{2}{1}{4}{Am} ? Regards, Vyatcheslav ___________________________________________________________________________________ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___________________________________________________________________________________ ^ permalink raw reply [flat|nested] 9+ messages in thread
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* Building a guitar chord using MP [not found] <mailman.459.1270827309.4277.ntg-context@ntg.nl> @ 2010-04-09 18:05 ` Vyatcheslav Yatskovsky 2010-04-09 18:30 ` Taco Hoekwater 2010-04-10 8:35 ` R. Bastian 0 siblings, 2 replies; 9+ messages in thread From: Vyatcheslav Yatskovsky @ 2010-04-09 18:05 UTC (permalink / raw) To: ntg-context 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. -- Best Regards, Vyatcheslav Yatskovsky ___________________________________________________________________________________ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___________________________________________________________________________________ ^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: Building a guitar chord using MP 2010-04-09 18:05 ` Vyatcheslav Yatskovsky @ 2010-04-09 18:30 ` Taco Hoekwater 2010-04-09 20:55 ` Henning Hraban Ramm 2010-04-10 8:35 ` R. Bastian 1 sibling, 1 reply; 9+ messages in thread From: Taco Hoekwater @ 2010-04-09 18:30 UTC (permalink / raw) To: mailing list for ConTeXt users 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 ___________________________________________________________________________________ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___________________________________________________________________________________ ^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: Building a guitar chord using MP 2010-04-09 18:30 ` Taco Hoekwater @ 2010-04-09 20:55 ` Henning Hraban Ramm 0 siblings, 0 replies; 9+ messages in thread From: Henning Hraban Ramm @ 2010-04-09 20:55 UTC (permalink / raw) To: mailing list for ConTeXt users Am 2010-04-09 um 20:30 schrieb Taco Hoekwater: > 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. I wouldn't use MetaPost at all (because I can't) but use LilyPond's great possibilities... (Never tried fret diagrams with the LilyPond module, but it should work.) Greetlings from Lake Constance! Hraban --- http://www.fiee.net/texnique/ http://wiki.contextgarden.net https://www.cacert.org (I'm an assurer) ___________________________________________________________________________________ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___________________________________________________________________________________ ^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: Building a guitar chord using MP 2010-04-09 18:05 ` Vyatcheslav Yatskovsky 2010-04-09 18:30 ` Taco Hoekwater @ 2010-04-10 8:35 ` R. Bastian 1 sibling, 0 replies; 9+ messages in thread From: R. Bastian @ 2010-04-10 8:35 UTC (permalink / raw) To: ntg-context On Fri, 09 Apr 2010 21:05:06 +0300 Vyatcheslav Yatskovsky <yatskovsky@gmail.com> 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! > > maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context > webpage : http://www.pragma-ade.nl / http://tex.aanhet.net > archive : http://foundry.supelec.fr/projects/contextrev/ > wiki : http://contextgarden.net > ___________________________________________________________________________________ > -- René Bastian www.pythoneon.org www.musiques-rb.org http://www.soundsurvey.org.uk/ ___________________________________________________________________________________ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___________________________________________________________________________________ ^ permalink raw reply [flat|nested] 9+ messages in thread
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