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Re: True Hand-engraved Dashed Slurs

From: Carl Sorensen
Subject: Re: True Hand-engraved Dashed Slurs
Date: Wed, 28 Jun 2017 03:00:13 +0000
User-agent: Microsoft-MacOutlook/

On 6/27/17 6:00 PM, "lilypond-devel on behalf of tisimst"
<address@hidden on behalf of
address@hidden> wrote:

>On Tue, Jun 27, 2017 at 3:20 PM, Kieren MacMillan [via Lilypond] <
>address@hidden> wrote:
>> Hi all,
>> >> Take my vote for having it as the default.
>> > Excellent! At least that makes two of us ;-) (and Kieren, I believe).
>> Yes.
>One thing I just noticed, upon closer inspection of using plain old Slur
>overrides is that the dashes near the tips of the slurs or shorter than
>those near the middle. This occurs because the stencil pieces are
>parameterized with the time variable "t" internally. In other words,
>because most slurs are longer horizontally than they are tall, the
>progression of the time variable moves more slowly near the tips,
>in shorter segments there and more quickly in the middle, resulting in
>longer segments there. I completely understand why it is parameterized
>way, but I'm not sure I like the output so much. Even the current default
>dashed slurs suffer from this.
>I'm now wondering (since it looks a little odd to me to have visibly
>shorter segments on the ends than in the middle), if there's an economical
>way to create the stencil so each segment has a more consistent length? If
>you compare the PS dashed curves and the dashed slurs with my latest
>settings, you will see that the PS curve is much better at making the
>segments more equal in length.
>Thoughts? You may be tempted to think that I'm being too nit-picky and
>maybe I am, but I think the PS dashed curve looks better due to its
>consistency. I've attached a PDF that shows all three kinds of dashed
>slurs, the current default, the better one using Slur Overrides, and the
>ideal one with PS code.

The slur made with your slur overrides is clearly defective. I'm not sure
why. I will investigate.

If you go to high magnification you will see that some dash ends are
concave and some are convex.  That should never happen.



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