On Fri, Feb 15, 2008 at 9:21 AM, Mats Bengtsson <[EMAIL PROTECTED]> wrote:
> > > Trevor Bača wrote: > > > > To understand why, you have to understand what the default setting > > of DynamicLineSpanner #'Y-extent does, namely to calculate the > actual > > extent of the included dynamics indications. Then, once this has > done, > > the placement of the full DynamicLineSpanner is determined using the > > padding and staff-padding properties, that specify the distance from > > the upper edge of the full DynamicLineSpanner to the closest note > > and/or > > staff. When you instead specify a fixed value of Y-extent, LilyPond > > won't care about the actual extent of the dynamics and align it as > if > > the top was at, say, 1 (if you set #'Y-extent = #'(-1 . 1)) > > relative to > > the internal reference point of the DynamicLineSpanner. To > > complete the > > picture, every element included in the DynamicLineSpanner, such as a > > Hairpin or DynamicText makes its own alignment relative to the > > reference point of the DynamicLineSpanner. > > > > > > > > Excellent. Thank you so much for the explanation. And I think what I > > was missing is the basic concept that turning Y-extent on is the point > > at which we cause Lily to ignore the actual, graphic dimensions (in > > the y direction) of various objects. Makes perfect sense. > Perhaps the main point is that you don't "turn on the Y-extent", rather > you turn > off the exact calculation of the Y-extent that's done by default.'' Good point. I suppose there's always some type of calculation done to determine the y extent of dynamics (and all other printing grobs, for that matter). By default the calculation is a, well, default calculation. The settings here say "use these hard-coded values I'm passing in instead." -- Trevor Bača [EMAIL PROTECTED]
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