Re: shape and chords

[Jan-Peter Voigt]

Hi David,

thanks for your reply!

Am 19.06.2012 um 19:20 schrieb David Nalesnik:

Hi Jan-Peter,

On Tue, Jun 19, 2012 at 7:51 AM, Jan-Peter Voigt <address@hidden> wrote:

Hello list, hello David,

I have two questions concerning the \shape command (2.15.40) created by David Nalesnik:

1. Is it possible to shape ties in a chord?

{ \shape Tie #'(((0 . 0)(0 . 1)(0 . -1)(0 . 0))((0 . 0)(0 . 1)(0 . -1)(0 . 0))) <c' e' g' b'>1 ~ | q4 }

Unfortunately, no.  It should be fairly straightforward to define a command to operate on unbroken/broken stacks of ties, and I can look into this.

that would be great! :-) I think two problems have to be solved:

1. Where is the stack of control-points found and how is it modified?

2. Howto define the offsets on this extra-dimension. If we have a stack of broken ties, we have to define N x M x 4 offset-pairs:

{ <c' e' g' b'>1 ~ \break q4 } => 4 x 2 x 4 = 32 x '(dx . dy)

Earlier today I had a case, were I would have modified all 3 ties with the same values. So this might be one option. But in many cases tie-direction is opposite for a two-note-chord.

Hm, I think about this.

 

2. In the development version warnings were given and a color was used to indicate a mismatch of offset count and number of curves in a broken one. What is the reason to not include that into the release?

My thinking here was to get the basic functionality into the code base, and these warnings are helpful but not strictly necessary.   (They were designed to be part of a slur-editing tool and might be more suitable for now as an enhancement on the LSR--opinions welcome!)

That sounds reasonable. But probably there is room for a "backdoor" to switch it on or plug in some kind of callback - a context property(?) - so there's no need to copy the whole function to LSR - now that it's already in the codebase ;-) ... just a thought.

For now, thanks again for this amazing helper :-)

Best Jan-Peter