Re: how offsets and alignment works: an explanation

[Nick Payne]

On 24/03/13 03:56, Trevor Daniels wrote:
> Hi Janek
>
> This is explained very concisely and without examples in the NR, see
> http://www.lilypond.org/doc/v2.17/Documentation/notation/aligning-objects

BTW, the text in that section ("an accidental can be repositioned 
vertically by setting Y-offset but any changes to X-offset have no 
effect.") reminds me that there is something odd with accidentals and 
setting Y-offset. A while ago I was having to nudge an acccidental 
vertically to avoid a collision with a note in another voice in single 
staff polyphony, and when I accidentally set a large value for Y-offset, 
I found that the accidental also moved in the X direction. Have a look 
at the output from the following. As the Y-offset gets larger, the 
change in positioning in the X direction gets larger as well. There's 
also something strange happening with the ledger lines, which are 
getting shorter as well.

\version "2.17.14"

\relative f'' {
  ais2 s
  \override Accidental.Y-offset = #0.5 ais s
  \override Accidental.Y-offset = #1.5 ais s
  \override Accidental.Y-offset = #2.5 ais s
}