Although I have long experience in software development, the Lilypond
source is a body of work that I have never really been able to
comprehend. This is a pity as I always wanted to help with development.
Now, when I have technical issues need knowledge of internals, such as
my recent effort re
Thanks Silvain,
As I mentioned previously on the list my background is maths and I
understand Beziers, and I have implemented very compact code to do this.
I appreciate your help in any case. Actaully, the main basis for the
original post was to query what approach Lilypond takes.
I also giv
Thanks to you all for your forbearance with me.
Well, the answer is really obvious, of course :-)
It was pointed out to me privately that I wasn't taking advantage of
my own midi-specific variables that had the \volta implemented.
So using \rh_midi in place of \rh and \lh_midi in place of \lh s
Le 11/08/2022 à 20:56, Kenneth Wolcott a écrit :
HI David;
I'm sorry that I'm so dense :-(
I've searched the 2.22.2 documentation and I do not find a "\volta"
command referenced.
I'll read your reply many times, ponder it and try to figure out why
I just don't get your very simple
HI David;
I'm sorry that I'm so dense :-(
I've searched the 2.22.2 documentation and I do not find a "\volta"
command referenced.
I'll read your reply many times, ponder it and try to figure out why
I just don't get your very simple explanation, and experiment a lot,
maybe I'll get it.
Th
Le 11/08/2022 à 16:47, Orm Finnendahl a écrit :
Hi,
below is a snippet and attached a pdf which shows the f sharp
accidental in the lower voice on the downbeat of bar 2 too far away
from the notehead. The distance seems to be related to the tied note
in the upper voice. Although the acciden
Hi,
below is a snippet and attached a pdf which shows the f sharp
accidental in the lower voice on the downbeat of bar 2 too far away
from the notehead. The distance seems to be related to the tied note
in the upper voice. Although the accidental is not repeated there, it
is taken into account fo
Le 11/08/2022 à 14:32, Valentin Petzel a écrit :
Hello Andrew,
is there any reason for using a custom circle approximation instead of simply
using (make-circle-stencil r th #f)?
The reason why your note heads are off is that a path stencil does not have an
extent. A path cotains arbitrary drawi
You can draw a quasi perfect circle with a Bezier curve (cubic) with 4 main
points.
The optimal distance between main and secondary control points is
0.5517847391957151 * radius
(you do not need as many decimal places...!)
(optimal value calculated with wxMaxima and checked with Inkscape)
Le
Le 11/08/2022 à 13:40, Andrew Bernard a écrit :
So here is an MWE showing the start of what I want to do - make
circular unfilled noteheads, and fitting in the staff size. This is
only a start, as the set of note styles I need have many extra
doodads, so this is just to get going.
It's been a
Hello Andrew,
is there any reason for using a custom circle approximation instead of simply
using (make-circle-stencil r th #f)?
The reason why your note heads are off is that a path stencil does not have an
extent. A path cotains arbitrary drawing commands, which means that Lilypond
does not
Werner LEMBERG writes:
>>> Well, Metafont uses a third-order Bézier approximation to build up
>>> circles (from four quarter circles). However, the Metafont book
>>> says that the difference to a real circle is less than 0.06%, which
>>> is thus imperceptible.
>>>
>>> The same holds for PostScri
So here is an MWE showing the start of what I want to do - make circular
unfilled noteheads, and fitting in the staff size. This is only a start,
as the set of note styles I need have many extra doodads, so this is
just to get going.
It's been a long time since I have done any Lilypond Scheme.
>> Well, Metafont uses a third-order Bézier approximation to build up
>> circles (from four quarter circles). However, the Metafont book
>> says that the difference to a real circle is less than 0.06%, which
>> is thus imperceptible.
>>
>> The same holds for PostScript-based fonts.
>
> PostScrip
Werner LEMBERG writes:
>>> There's a lot of oldish webpages with complex Bezier curve
>>> constructions for circles.
>>
>> Those must be approximate constructions. It is not mathematically
>> possible to construct a Bézier curve which is at the same time an
>> exact circle.
>
> Well, Metafont us
Kenneth Wolcott writes:
> HI David;
>
> Thank you!
>
> Now what happens when I have multiple repeats with this situation?
>
> Ken
>
> On Wed, Aug 10, 2022 at 7:51 PM David Kastrup wrote:
>>
>> Kenneth Wolcott writes:
>>
>> > HI;
>> >
>> > first repeat at low dynamic; next repeat at higher d
There are a whole lot of custom noteheads I need that are based on
circles with all sorts of additions like dots and things for a
contemporary modernist work. Very special case, but they may end up
being useful for others when I finish. I'll see if draw-circle can fit
into the scheme of things
> Le 11 août 2022 à 09:38, Andrew Bernard a écrit :
>
> All my other custom noteheads use curveto heavily. I was wondering if I could
> scrimp time by using an arc command. I'm trying to avoid raw postscript as I
> think that obviates the ability to output SVG - not that I use it but others
All my other custom noteheads use curveto heavily. I was wondering if I
could scrimp time by using an arc command. I'm trying to avoid raw
postscript as I think that obviates the ability to output SVG - not that
I use it but others do,
Thanks all!
Andrew
On 11/08/2022 5:16 pm, Jean Abou Sam
> Le 11 août 2022 à 09:06, Andrew Bernard a écrit :
>
> As to the _real_ question (XY? ;-) ), I am needing to do custom circular
> noteheads, also with bits and bobs such as middle dots and so on and I was
> not able to find an arc operator in the markup path commands, so one needs to
> us
As to the _real_ question (XY? ;-) ), I am needing to do custom circular
noteheads, also with bits and bobs such as middle dots and so on and I
was not able to find an arc operator in the markup path commands, so one
needs to user curveto, which is a Bezier operator. Is that right?
Andrew
Thanks all,
Comments much appreciated, but I know all that, as my background is
maths. I was just wanting to see how Lilypond does it.
And of course after I posted about oldish pages I recall of course that
you have to do circles with Beziers in fonts, as the arc operator is not
available. T
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