Dimensions vs outline

[Jean Abou Samra]

> Hi List,
> I'm trying to understand the difference between "outline" and 
> "dimensions":
>
> \version "2.20.0"
> \markup {
>    "1234"
>     \combine
>     \filled-box #'(-1 . 4) #'(-1 . 2.5) #1
>     \override #'(style . outline)
>     \override #'(thickness . 3)
>     \whiteout
>     \with-outline "555"  "5" "6789"
> }
> \markup {
>    "1234"
>     \combine
>     \filled-box #'(-1 . 4) #'(-1 . 2.5) #1
>     \override #'(style . outline)
>     \override #'(thickness . 3)
>     \whiteout
>     \with-dimensions-from "555"  "5" "6789"
> }
>
> Can anyone show me a clearer example?
> TIA, cheers,
> Pierre

Hi Pierre,

Looks like we're temporarily swapping roles…

From the code, I believe outlines as in \with-outline are the contour 
used by skylines, so it will only make a difference in spacing. They are 
different from the outlines drawn by \whiteout, I think.

Below, a somewhat far-fetched example:

\version "2.21.7"

hugeTilde = \markup \scale #'(4 . -4) "~"

{ c'1-\markup \with-dimensions-from \hugeTilde "5" -> }
{ c'1-\markup \with-outline \hugeTilde "5" -> }

Attached is the output when using the -d debug-skylines option.

In daily practice, I'm not sure it makes a significant difference though.

Best,
Jean

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