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Re: Tweaking notehead direction in chords
From: |
Paul Morris |
Subject: |
Re: Tweaking notehead direction in chords |
Date: |
Sun, 23 Dec 2012 13:14:43 -0500 |
On Dec 20, 2012, at 7:51 PM, Thomas Morley <address@hidden> wrote:
> I think there is no way to align moved noteheads left and right from
> the stem _and_ to keep a correct 'stem-attachment in x-axis-direction
> in all thinkable cases.
> The y-value of 'stem-attachment has to be modified in several situations
> anyway.
Hi Harm,
I had some more time to look at this, and I think I may be catching up with you
now. :-)
I now see that using (/ stem-x-width 2) nicely handles all four possibilities
correctly in terms of positioning note heads relative to the stem on the X-axis
(upwards or downwards stem, moving a note head to the default or to the
opposite-of-default side of the stem). So this is all that is needed to
correctly align notes vertically on either side of the stem.
But I also see how this means the stem may not attach properly in some cases.
The main (or only?) instance of this seems to be when a note head that is at
the end of a stem has been offset to the non-default side of the stem. It
overlaps only half of the stem width, and this does not look right. (I can't
think of another case where this would be a problem.)
It might be possible to handle this case automatically in the code (at least
for the X-axis of 'stem-attachment), but I'm not sure it would be worth it
since it can be tweaked manually using your adjustStem function. (But just for
example...)
if note head is the lowest one on an upwards stem or
if note head is the highest one on a downwards stem
and it has been moved to the non-default side of the stem
then adjust the 'stem-attachment accordingly
Also, it seems that changing the 'stem-attachment property moves the stem and
not the note. This preserves the vertical alignment of the notes which is a
good thing, but it basically reverses the usual pattern of how note heads
overlap the stem. (Notes on the non-default side of the stem will now overlap
the full width of the stem, and notes on the default side will now overlap half
the width of the stem -- the opposite of the usual pattern.) There is no way
around this, since offsetting a note at the end of the stem means you either
get the stem attachment right, or keep the usual pattern of how note heads
overlap the stem. And clearly it's better to get the stem attachment right.
So I don't have any further suggestions for the code. I will try to find some
time to come up with a good concise example for the LSR, and put the default
notes on a separate staff above the offset notes.
Best,
-Paul
- Re: Forced double accidental, (continued)
- Re: Forced double accidental, David Nalesnik, 2012/12/13
- Re: Forced double accidental, David Kastrup, 2012/12/14
- Re: Tweaking notehead direction in chords, Paul Morris, 2012/12/15
- Re: Tweaking notehead direction in chords, Thomas Morley, 2012/12/15
- Re: Tweaking notehead direction in chords, Thomas Morley, 2012/12/17
- Re: Tweaking notehead direction in chords, Paul Morris, 2012/12/17
- Re: Tweaking notehead direction in chords, Paul Morris, 2012/12/20
- Re: Tweaking notehead direction in chords, Thomas Morley, 2012/12/20
- Re: Tweaking notehead direction in chords, David Kastrup, 2012/12/21
- Re: Tweaking notehead direction in chords, Paul Morris, 2012/12/21
- Re: Tweaking notehead direction in chords,
Paul Morris <=
- Re: Tweaking notehead direction in chords, Thomas Morley, 2012/12/23
- Re: Tweaking notehead direction in chords, Paul Morris, 2012/12/26
- Re: Tweaking notehead direction in chords, Thomas Morley, 2012/12/26
- Re: Tweaking notehead direction in chords, Paul Morris, 2012/12/27
- Re: Tweaking notehead direction in chords, Thomas Morley, 2012/12/27
- Re: Tweaking notehead direction in chords, Paul Morris, 2012/12/13