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\include "lilypond-book-preamble.ly"


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% ly snippet:
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\sourcefilename "snippets/customizing-the-chord-grid-style.ly"
\sourcefileline 0
%% DO NOT EDIT this file manually; it was automatically
%% generated from the LilyPond Wiki
%% (https://wiki.lilypond.community).
%%
%% Make any changes in the Wiki itself, or in
%% `Documentation/snippets/new/`, then run
%% `scripts/auxiliar/makelsr.pl`.
%%
%% This file is in the public domain.

\version "2.24.0"

\header {
%%  Translation of GIT committish: c043783aac6c35926d633aa2daf60ed4f2e7ca7a
  texidocfr = "
Il est possible de personnaliser la division des cases à l'aide des
propiétés de @code{ChordSquare} @code{measure-division-lines-alist} et
@code{measure-division-chord-placement-alist}, qui sont toutes deux des
listes associatives. Leurs clés sont des divisions de la mesure,
autrement dit des listes de fractions de la mesure que chaque accord,
silence ou saut représente. Plus précisément, cette liste de divisions
de la mesure est constituée de nombres positifs exacts dont l'addition
fait 1, comme par exemple @code{'(1/2 1/4 1/4)}. L'exigence d'exactitude
signifie par exemple que @code{1/2} est valide, contrairement
à @code{0.5}.

Les valeurs de @code{measure-division-lines-alist} sont des listes de
lignes, représentes sous la forme
@code{(@var{x1} @var{y1} @var{x2} @var{y2})}. La ligne débute au point
@code{(@var{x1} . @var{y1})} et se temine en
@code{(@var{x2} . @var{y2})}. Les coordonnées sont comprises dans
l'intervalle [@minus{}1,@tie{}1] relativement à l'étendue de la case.

Les valeurs de @code{measure-division-chord-placement-alist} sont des
listes de paires @code{(@var{x} . @var{y})} indiquant le positionnement
des accords respectifs.

L'exemple ci-dessous illustre le cas particulier d'une grille dont le
style spécifie le découpage des mesures en trois parts égales.
"

  doctitlefr = "Personnalisation du style de grille harmonique"

%%  Translation of GIT committish: 70abecb938c2bb752967bd56b7402dd8129838a5
  texidoces = "
Se pueden definir divisiones personalizadas de los cuadrados de
acordes a través de las propiedades
@code{measure-division-lines-alist} y
@code{measure-division-chord-placement-alist} de
@code{ChordSquare}.  Ambas son listas de asociación.  Sus claves
de asociación son divisiones de compás, concretamente listas que
dan la fracción del compás que representa cada acorde (o silencio
o separación).  De forma más precisa, una lista-A de divisiones de
compases consta de números positivos exactos que suman la unidad,
por ejemplo @code{'(1/2 1/4 1/4)}.  El requisito de la exactitud
implica que p.ej. @code{1/2} es válido pero no @code{0.5}.

Los valores de @code{measure-division-lines-alist} son listas de
líneas, que están representadas como @code{(@var{x1} @var{y1}
@var{x2} @var{y2})}.  La línea comienza en el punto
@code{(@var{x1} . @var{y1})} y finaliza en @code{(@var{x2}
. @var{y2})}.  Las coordenadas se expresan en la escala
[-1,@tie{}1] relativa a las dimensiones del cuadrado.

Los valores en @code{measure-division-chord-placement-alist} son
listas de pares @code{(@var{x} .@tie{}@var{y})} que dan la
ubicación de los compases respectivos.

Este ejemplo define un estilo de rejilla de acordes peculiar que
tiene una regla para los compases divididos en tres partes
iguales.

"

  doctitlees = "Personalización del estilo de las rejillas de acordes"

  categories = "Chords"

  texidoc = "
Custom divisions of chord squares can be defined through the
@code{measure-division-lines-alist} and
@code{measure-division-chord-placement-alist} properties of
@code{ChordSquare}. These are both alists. Their keys are measure
divisions, namely lists which give the fraction of the measure that
each chord (or rest, or skip) represents. More precisely, a measure
division alist is made of positive, exact numbers adding up to@tie{}1,
for example: @code{'(1/2 1/4 1/4)}. The exactness requirement means
that, e.g., @code{1/2} is valid but not @code{0.5}.

The values in @code{measure-division-lines-alist} are lists of lines,
which are represented as
@code{(@var{x1} @var{y1} @var{x2} @var{y2})}. The
line starts at the point @code{(@var{x1} . @var{y1})} and
ends at @code{(@var{x2} . @var{y2})}. Coordinates are
expressed in the [-1,@tie{}1] scale relative to the extent of the
square.

The values in @code{measure-division-chord-placement-alist} are lists
of @code{(@var{x} .@tie{}@var{y})} pairs giving the placement
of the respective chords.

This example defines a peculiar chord grid style that has a rule for
measures divided in three equal parts.
"

  doctitle = "Customizing the chord grid style"
} % begin verbatim


\paper {
  line-width = 10\cm
  ragged-right = ##f
}

\new ChordGrid \with {
  \override ChordSquare.measure-division-lines-alist =
    #'(((1) . ())
       ((1/3 1/3 1/3) . ((-1 -0.4 0 1) (0 -1 1 0.4))))
  \override ChordSquare.measure-division-chord-placement-alist =
    #'(((1) . ((0 . 0)))
       ((1/3 1/3 1/3) . ((-0.7 . 0.5) (0 . 0) (0.7 . -0.5))))
}
\chordmode {
  \time 3/4
  c2.
  c4 c4 c4
}



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