Sorry, my previous reply was rejected because of the attached images. Werner, I hope that the links are sufficient.
---------- Forwarded message ---------- From: Stefano Troncaro <stefanotronc...@gmail.com> Date: 2018-02-06 11:05 GMT-03:00 Subject: Re: Tweaking Hairpin shape To: Andrew Bernard <andrew.bern...@gmail.com> Cc: lilypond-user Mailinglist <lilypond-user@gnu.org> @Werner Sure, I attached a few from here <https://imslp.org/wiki/Special:ReverseLookup/23160> and here <https://imslp.org/wiki/Special:ReverseLookup/23074>. Of course there are many more, in these and other scores. In case I was not clear before, not every rotated hairpin is like this. They are a quite natural possibility when engraving by hand, not so much in digital scores. I think they have their uses. @Andrew Thanks for your suggestion! I have not used PostScript but from what you mention I gather it will be a very useful tool. I can picture many scenarios where I would need it, so I will look into it. 2018-02-06 11:22 GMT-03:00 Stefano Troncaro <stefanotronc...@gmail.com>: > Thank you David! I think I should be able to work something out from here, > I'll post again when I have some kind of update. > > 2018-02-06 11:04 GMT-03:00 David Nalesnik <david.nales...@gmail.com>: > >> Hi Stefano, >> >> >> On Mon, Feb 5, 2018 at 11:53 PM, Stefano Troncaro >> <stefanotronc...@gmail.com> wrote: >> > David and Harm, I'm really impressed by the level of expertise you both >> have >> > showed in this thread. The function works wonderfully, and I'm really >> > grateful for your help! >> > >> > I feel kind of bad for asking, but I'm stuck after trying to do what I >> > thought would be a minor tweak. I wanted to make it so that the two >> lines >> > that form the hairpin would end in the same vertical line, since when >> the >> > hairpin is rotated the end-points of the two lines are displaced. I >> tried >> > achieve this by drawing a white box that overlaps with the line that >> > overextends, therefore "deleting" the excess. >> > >> > While I could not always place the box correctly, due to how >> > ly:stencil-stack works (I don't explain this further because of the >> > following), the real problem I found is that even when the box is >> properly >> > placed, the shortened line looks off. This is because Lilypond naturally >> > makes line endings smooth, so the "cut the excess with a box" approach >> > creates a hairpin with one line ending smoothly and the other ending >> > harshly. This is less evident for thinner lines but is easy to see with >> > thicker ones. Another flaw of this approach is that the white box >> reserves >> > unused space. >> > >> > So, with that in mind, I wonder: is there a way to smoothen the line >> after >> > "cutting" it (which I doubt) or, lacking that, is there a way to access >> only >> > one line of the hairpin to shorten it by the necessary amount? The >> later I >> > imagine like a Hairpin.shorten-pair that affects only one of the two >> lines. >> > Alternatively, is it more sensible to just draw the two lines and stack >> them >> > into a stencil? I have not yet tried this but the more I think about it >> the >> > more it looks like the most viable option. I tried to search the >> definition >> > of ly:hairpin::print to see how Lilypond does this, but I couldn't find >> it. >> >> At this point I think you would get the best results by rewriting >> ly:hairpin::print from scratch so that it has the existing >> functionality with your enhancements worked in. >> >> At some point I translated the function from C++ into Scheme for some >> experimentation. It's fairly direct. I found a version of this where >> I left the original C++ code inlined as comments >> (add-shorten-pair.ly). >> >> I used this as a preliminary to adding 'shorten-pair directly into the >> C++ code, and I don't remember if I made improvements to the codebase >> along the way... >> >> Hopefully, you can make use of it! >> >> I also located a file which shows what you can do from scratch: here >> adjusting the size of the circle in the circled tip (not with >> shorten-pair here...) FWIW. >> >> Hope this helps... >> >> David >> > >
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