Re: [Lilypond-auto] Issue 2658 in lilypond: wrong stem rendering (inconsistent thickness)

[lilypond]

Comment #10 on issue 2658 by address@hidden: wrong stem rendering  
(inconsistent thickness)
http://code.google.com/p/lilypond/issues/detail?id=2658

Regarding comment #8: "this patch doesn't solve the original problem"  
appears not really accurate regarding the image.  Frescobaldi and Okular  
are actually both rendering using Poppler, and Poppler is likely  
overcompensating from thick lines previously.

Now the problem with resolution dependent behavior is that we don't have  
much more than setstrokeadjust available from the PostScript->PDF side, and  
if the rounded ends are not _fully_ rounded ends, there is no single stroke  
command that will preserve line thickness left _and_ right_.  So I don't  
see that anything but clip areas can be used here: if we draw the rounded  
ends separately, they'll get different stroke width compensation and will  
likely overshoot.

There is still something wrong in the current implementation: I see that,  
say, ledger lines stopped being rounded altogether: looks like the code  
does not work for horizontal lines right now.

But while that need to gets fixed, I don't see that we have better options  
available than what one already sees.  Yes, some lines now get too flimsy  
in some resolutions in some viewers.  But overall, there is less wrong with  
the output.  In particular, Ghostscript does a quite more pleasing PNG  
rendition.

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