[smufl-discuss] baseline of semibreve rest and general

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[smufl-discuss] baseline of semibreve rest and general

Christof Schardt
RESTS
Joe wrote:

> Based on the comments so far, I'm agreeing that perhaps we need to
> move away from totally uniform registration of all rests and
> explicitly state that the semibreve rest is registered relative to
> the line from which it hangs, not the center line of an imaginary staff.

For PriMus I have chosen the baselines for rest-glyphs
as sonata etc. do.
This revealed to be bad for the semibreve, because: As soon
as scaling was involved, the symbol was optically displaced from
its anchor line.


I think this general rule is practical:

If there is a logial reference point (vertical) für a glyph,
this also will be the natural fix point when scaling is applied.
Choosing the baseline on this reference height makes the
positioning robust against scaling.

This rule works well for noteheads, accidentals, clefs.
And it should be applied for the rests of type
semibreve, minim, crotchet and quaver.

The positioning of shorter rests is a matter of style.
That means you have to shift them probably anyway using
some kind of delta-y-step-table. I would prefer a fix
baseline below the lowest bowl (like for the quaver).
But as I sayed, it doesn't matter much, because you
have to do a shift anyway.

Christof





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