Re: Changing voice order...

On Thu, Nov 3, 2016 at 9:00 AM, David Kastrup [via Lilypond] <[hidden email]> wrote:

Werner LEMBERG <[hidden email]> writes:

>> So
>> \voiceOne \voiceTwo \voiceThree \voiceFour
>> becomes
>> \voiceUp \voiceDown \voiceUpTwo \voiceDownTwo
>
> I would make \voiceUp and \voiceDown be the same as \voiceUpOne and
> \voiceUpTwo, respectively, so that we can write
>
> \voiceUpOne \voiceDownOne \voiceUpTwo \voiceDownTwo

Here is another variant that's a bit bold:

\voice^1 \voice_1 \voice^2 \voice_2

This will syntactically take a fingering event as input. However, this
does not work as

\voices 1,2,-2,-1 << \\ ... \\ >>

does. I am not totally sure whether \voices ^1^2_1_2 << \\ ... \\ >>
might not be parseable (as a single post-event) but it won't mix with
symbolic names for voice contexts. So while it is a cute replacement
for \voiceOne ... and is expressive concerning its direction, I am not
sure it's a winner.

I like this idea. Here's another thought to throw into the mix, more of an enhancement idea for the current way voices are stacked. What about something like this:

%%%%%%%%

\version "2.19.36"

% This command takes an integer and derives the stem direction from its

% sign and then calculates the currently expected zero-based voice index

% so that 1, 2, 3, 4, etc. represent the 1st, 2nd, 3rd, 4th up-stem voices

% respectively and -1, -2, -3, etc. represent the 1st, 2nd, and 3rd down-

% stem voices, respectively.

% The integer also represents the voice's relative column priority for being

% shifted away from the principal column (i.e., larger numbers get pushed

% farther out). Positive integer voices get shifted right, negative integer

% voices get shifted left.

voice = #(define-music-function (nbr) (number?)

(let* ((dir (/ (abs nbr) nbr))

(idx (+ (* 2 dir (- nbr dir)) (/ (- 1 dir) 2)))

)

(format #t "Voice input: ~a, direction: ~a, index: ~a" nbr dir idx)(newline)

(context-spec-music (make-voice-props-set idx) 'Voice)))

% and now an example

\new Staff <<

{ \voice 1 c''4 c'' c'' c'' } % what we know as \voiceOne, so no difference here

{ \voice 5 a'2. g'4 } % what we would call \voiceNine, if there was such a thing

{ \voice -11 g'2 b' } % what we would call \voiceTwentyTwo, but seriously folks...

%%%%%%%%

This doesn't really change the above discussion about implicit voicing and how they should stack, but it does make it a little easier to create any number of explicit directional voices. I guess I'm too used to the current way of stacking. Pardon the noise if this doesn't contribute constructively to the discussion. It was just a thought I had yesterday that I finally got around to implementing.

Best,

Abraham

From:	tisimst
Subject:	Re: Changing voice order...
Date:	Thu, 3 Nov 2016 09:49:27 -0700 (MST)