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[Lilypond-auto] [LilyIssues-auto] [testlilyissues:issues] #5307 Skyline

From: Auto mailings of changes to Lily Issues via Testlilyissues-auto
Subject: [Lilypond-auto] [LilyIssues-auto] [testlilyissues:issues] #5307 Skyline Refinements (Rounded Boxes and Rotated Ellipses)
Date: Mon, 16 Apr 2018 03:39:39 -0000

Veeery nice :-)

[issues:#5307] Skyline Refinements (Rounded Boxes and Rotated Ellipses)

Status: Started
Labels: re
Created: Sun Apr 15, 2018 09:46 PM UTC by Torsten Hämmerle
Last Updated: Sun Apr 15, 2018 10:23 PM UTC
Owner: Torsten Hämmerle

Recently, there have been some discussions about mysterious spacing of \rounded-box markup.

Harm identified skyline problems as the cause and submitted the following bug report:
Possible regression with box-markup/rounded-box-markup
Before Mike Solomon's new skyline handling, there were no such uninteded extra margins.

Rounded Box Skylines

The skyline of boxes with rounded corners do not tightly wrap the boxes but there's an unintentional margin (as wide as the corner radius).

Apart from that here are a few other shortcomings and so I have decided to create a more general box-and-rotated-ellipses skyline issue.

Other issues

When working on this case, I came across a few other things that call for improvement and so I've included them into the test file. Most notably, there is a general problem with rotation. And it would be nice to recreate the rounded corners for large boxes/radii.
At the same time, one should keep run-of-the-mill stuff like ledger lines as simple and fast as possible.

Test file

A file with 'debug-skylines switched on and TextScript padding values set to 0 in order to be able to check how the markup objects are fitted together.
I have tried to demonstrate about everything you cold do with boxes (including scaling, rotating, cominations thereof).

#(ly:set-option 'debug-skylines #t)

  \set Staff.instrumentName = \markup #(lilypond-version)
  \override Staff.TextScript.padding = 0
  \override Staff.TextScript.outside-staff-padding = 0
  \override Staff.TextScript.outside-staff-horizontal-padding = 0
  \override Staff.TextScript.self-alignment-X = #CENTER
  \override Staff.TextScript.layer = 0
  c'' ^\markup \override #'(thickness . 4) \box \teeny 1
      _\markup \with-color #grey \filled-box #'(-1 . 4) #'(1 . 4) #1
  b'  ^\markup \rounded-box "2!" ^\markup \rounded-box "3"
  d'' ^\markup \circle "*" ^\markup \rotate #90 \ellipse "Elli"
      _\markup \with-color #grey \rotate #10 \filled-box #'(-2 . 5) #'(1 . 4) #10
      _ \markup \rotate #36 \override #'(corner-radius . 20) \scale #'(1 . 0.4)
                \rotate #-68 \scale #'(1.6 . 1) \rounded-box "dop"
  f'' _\markup \override #'(corner-radius . 0.5) \rounded-box "."
  a'  ^\markup \rotate #30 \rounded-box "rotated a"
      _\markup \scale #'(1 . 1.5) \rotate #45 \override #'(thickness . 5)
               \rounded-box \rotate #-45 \scale #'(2 . 1) \bold "!"
  d'' _\markup \override #'(corner-radius . 20) \rounded-box "4"
  a'' ^\markup \rotate #-165 \box "rotated b"
      _\markup \rotate #180 \override #'(corner-radius . 20) \rounded-box \teeny
               \override #'(baseline-skip . 0) \center-column { "Upside" "Down" }

(see attached PNG file)

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