Re: Adds incipit section to NR (issue 108270043 by address@hidden)

[Phil Holmes]

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From: <address@hidden>
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Sent: Tuesday, August 12, 2014 12:46 PM
Subject: Re: Adds incipit section to NR (issue 108270043 by 
address@hidden)


> https://codereview.appspot.com/108270043/diff/20001/ly/property-init.ly
> File ly/property-init.ly (right):
>
> https://codereview.appspot.com/108270043/diff/20001/ly/property-init.ly#newcode298
> ly/property-init.ly:298: scale-factor = #1757/1000
> Uh what?  Why are you overriding the scale-factor here?  This cannot
> possibly be correct except possibly for a single staff size.
>
> What are you trying to achieve?
>
> https://codereview.appspot.com/108270043/

When this was discussed earlier, we discovered that the dimensions within 
"\layout { $(ly:grob-layout grob)" are incorrectly scaled.  This is 
demonstrable by using the function I've provided with and without that 
scaling factor.  With the scaling factor, the incipits are the correct size.

See the exchange below: your comments with > and mine below that.  This from 
4 July.

===========================================

> I don't really have an idea where the scale of ly:grob-layout is
> actually coming from, but it would appear like the compensation for
> issue 677 will not work for both the standard \layout and the grob
> layout, the latter apparently already being scaled ?
>
> At any rate, if calculations with sizes are done, it would seem
> imperative to be talking about the same cm, so possibly the scaling in
> issue 677 does not happen at the right place.
>
> --
> David Kastrup


I checked how far out the scaling of the markup score was prior to 677: by
ruler I measured it as being a factor of 1.76. The command-line output
shows \cm as being 10 for the "normal" layout, and 5.69 for the \layout with
$(ly:grob-layout grob). The ratio between these is 1.757. So it seems
clear that the problem is related to 677, although I clearly have no idea
what's going on.

I can post this as a bug, but I'm guessing it would be tricky to fix. Would
you object to scaling the dimensions of the incipit (in the incipit code)
line-width and indent by the 1.76 factor, to work round the problem?

=================================================

--
Phil Holmes