#4976 Add annotation of \shape-d curves (WIP)

[Urs Liska]

Add annotation of \shape-d curves (WIP)

This code is not ready for inclusion because I need some help.
Basically I'm happy with what it does, but I don't know how to
make it support broken slurs as well.
Additionally I don't understand how \shape works as a post-event,
and it doesn't work yet.

(I'll update the documentation once the patch is ready for
inclusion.)

Actually I would like to define some of the functions not as
local functions but as globally available routines because the
\compoundSlur code will be able to use it, and it will make it
easier to later incorporate \compoundSlur as well.

• Add optional first boolean argument to turn on annotation
• print control points with connection to end points
• print (lightly) original slur with control points

Limitations:
- doesn't work with broken spanners yet
- doesn't work when item is not present

http://codereview.appspot.com/303650043

[Urs Liska]

• Description has changed:

Diff:

• Attachments has changed:

Diff:

--- old
+++ new
@@ -0,0 +1 @@
+annotate-shape.png (15.2 kB; image/png)

• Needs: -->

[Urs Liska]

Re-commit without the reformatting

http://codereview.appspot.com/303650043

[Simon Albrecht]

IIUC using it as a post-event would work if it were an event-function, but I think that would break the \shape #'foo Slur c128( version… so I can’t explain either how it works now.

[Anonymous]

Fails make check/doc

From log files this snippet turns up.

<<
  {
    e'1-\shape #'((0 . 0.5) (0 . 1) (0 . 1) (0 . 0.5)) ~ e'
  }
\\
  \relative { r4 <g' c,> <g c,> <g c,> }
>>

This is found here:

http://lilypond.org/doc/v2.19/Documentation/notation-big-page.html#modifying-ties-and-slurs

Third example (I think).