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Re: How to restore default-stem-attachment with note-head-stencil-overri
From: |
Thomas Morley |
Subject: |
Re: How to restore default-stem-attachment with note-head-stencil-override? |
Date: |
Wed, 18 Jul 2012 22:56:09 +0200 |
2012/7/18 Keith OHara <address@hidden>:
> Thomas Morley <thomasmorley65 <at> googlemail.com> writes:
>
>> adding sth to a NoteHead-stencil via stencil-override returns a weird
>> output with stemmed NoteHeads.
>>
>> In the code below I added a box around the default-note-head and the
>> stem is moving away.
>
> stem-attachment is expressed as a fraction of the size of the note-head.
> That would have been convenient if your NoteHead-stencil were a new
> note-head, but in your case with the box you will need to tell LilyPond
> what portion of the stencil is actually the notehead. Probably the ratio
> of your note-head width to the width of your box.
Hi Keith,
thanks for your reply!
I tried to follow your explication while investigating an untweaked NoteHead.
But reading out x- and y-length of the NoteHead-stencil, and comparing
their quotient with the quotient build from the values I got via
'stem-attachment, different results are returned.
\version "2.15.42"
\relative c' {
\override Stem #'color = #red
\override Stem #'layer = #-10
c4
\override NoteHead #'stencil =
#(lambda (grob)
(let* ((stil (ly:note-head::print grob))
(x-length (interval-length (ly:stencil-extent stil X)))
(y-length (interval-length (ly:stencil-extent stil Y)))
(st-pos (ly:grob-property grob 'stem-attachment))
(r1 (/ (car st-pos) (cdr st-pos)))
(r2 (/ x-length y-length ))
)
(newline)(display "x-length ")(display x-length)
(newline)(display "y-length ")(display y-length)
(newline)(display "st-pos ")(display st-pos)
(newline)(display "(/ (car st-pos) (cdr st-pos)) ")(display r1)
(newline)(display "(/ x-length y-length ) ")(display r2)
(ly:grob-set-property! grob 'stem-attachment (cons x-length y-length))
stil))
c4
}
log-excerpt:
GNU LilyPond 2.15.42
Processing `stem-attach-01.ly'
Parsing...
Interpreting music...
Preprocessing graphical objects...
x-length 1.316178
y-length 1.100012
st-pos (1.0 . 0.341476274804275)
(/ (car st-pos) (cdr st-pos)) 2.92846113708243
(/ x-length y-length ) 1.19651240168289
Finding the ideal number of pages...
What am I missing?
-Harm
- How to restore default-stem-attachment with note-head-stencil-override?, Thomas Morley, 2012/07/18
- Re: How to restore default-stem-attachment with note-head-stencil-override?, Keith OHara, 2012/07/18
- Re: How to restore default-stem-attachment with note-head-stencil-override?,
Thomas Morley <=
- Re: How to restore default-stem-attachment with note-head-stencil-override?, Keith OHara, 2012/07/18
- Re: How to restore default-stem-attachment with note-head-stencil-override?, Janek WarchoĊ, 2012/07/19
- Re: How to restore default-stem-attachment with note-head-stencil-override?, Thomas Morley, 2012/07/20
- Re: How to restore default-stem-attachment with note-head-stencil-override?, Keith OHara, 2012/07/20
- Message not available
- Message not available
- Re: How to restore default-stem-attachment with note-head-stencil-override?, Thomas Morley, 2012/07/21