Re: Custom key signature stencils, differentiating major and minor keys

[Paul Morris]

On Dec 5, 2012, at 5:58 PM, Thomas Morley <address@hidden> wrote:

> Sorry to send this again, forgot to cc the list.
> 
> 2012/12/5 Thomas Morley <address@hidden>:
>> 2012/12/5 Paul Morris <address@hidden>:
>>> On Dec 4, 2012, at 7:27 PM, Thomas Morley <address@hidden> wrote:
>> [...]
>>>> May I ask, if you could add a commented 2.16-version of it?
>>>> Although your code will work for 2.16.1 up to 2.17.6 (so far I
>>>> tested), it would be nice to show the new make-engraver-macro and the
>>>> possibility of #{ #} in scheme-code, once the LSR is updated.
>>> 
>>> Ok, I just uploaded a new version with the 2.16 code commented out.  The 
>>> make-engraver-macro is quite nice.
>> 
>> Thanks for doing this!

Glad to help!


>>> It was a little tricky figuring out the #{ \markup ... #} syntax after 
>>> getting used to the scheme version.  If it were not for the need to 
>>> demonstrate the new syntax (which I'm happy to help with) I'd probably just 
>>> stick with the scheme version at this point.
>> 
>> I know what you mean. :)
>> I tend to use only scheme-syntax in longer scheme-expressions.
>> It's nice to show #{ #}, though.
>> 
>>> I eventually got it working in all cases, but had to move the accidental 
>>> markups into variables
>> 
>> Well, I do like variables. :)

Yeah, in this case they were only used once each, so it seemed like overkill to 
assign them to variables.  Maybe it's clearer that way though.  


>>> to avoid too much nesting, which wasn't working.  Namely this part:
>>> 
>>>          (if (pair? tonic-acc)
>>>            (set! key-name (markup key-name (if (= acc-type 0.5 )
>>>              (markup #:translate (cons (* mult -0.3) (* mult 0.8)) 
>>> #:magnify (* mult 0.9) #:sharp)
>>>              (markup #:translate (cons (* mult -0.2) (* mult 0.4)) 
>>> #:magnify (* mult 0.9) #:flat)))))
>>> 
>>> % ----> the following doesn't work:
>>> 
>>>      (if (pair? tonic-acc)
>>>        (set! key-name #{ \markup #key-name #(if (= acc-type 0.5 )
>>>          #{ \markup { \translate #(cons (* mult -0.3) (* mult 0.8)) 
>>> \magnify #(* mult 0.9) \sharp } #}
>>>          #{ \markup { \translate #(cons (* mult -0.2) (* mult 0.4)) 
>>> \magnify #(* mult 0.9) \flat  } #} ) #} ))
>> 
>> It will work, while adding two braces:
>> 
>> (if (pair? tonic-acc)
>>  (set! key-name
>>  #{ \markup { % <==========================
>>          #key-name
>>          #(if (= acc-type 0.5 )
>>               #{
>>                       \markup {
>>                               \translate #(cons (* mult -0.3) (* mult 0.8))
>>                               \magnify #(* mult 0.9)
>>                               \sharp
>>                       }
>>               #}
>>               #{
>>                       \markup {
>>                               \translate #(cons (* mult -0.2) (* mult 0.4))
>>                               \magnify #(* mult 0.9)
>>                               \flat
>>                       }
>>               #})
>>          } % <=============================
>>    #}))

Argh!  The missing braces strike again.  I should have caught that.  Your 
reformatting makes it much easier to follow.


>>> %----> but this does:
>>> 
>>>          (if (pair? tonic-acc)
>>>            (set! key-name #{ \markup { #key-name #(if (= acc-type 0.5 ) 
>>> txt-sharp txt-flat ) } #} ))
>>> 
>>> 
>>> Regards,
>>> -Paul
>> 
>> 
>> Now approved:
>> http://lsr.dsi.unimi.it/LSR/Item?id=856
>> 
>> Regards,
>>  Harm
>> 
>> P.S.
>> I cc-ed the list, because I think it might be of interest for all.

Thanks again!
-Paul