I've given it some more work. The \repeat construct is gone, and the displayed messages indicate that my recursion is working correctly.
Metronome marks are not yet printed, however. What am I missing? Also, I'm
getting a wrong type argument error message when I try to (let*
(current-tempo (car tempo-list))). I feel like I'm almost there though.
Code attached, and thanks again.
On Mon, 6 Feb 2023 at 14:19, Adam M. Griggs <adammgri...@gmail.com> wrote:
> Hello list,
>
> I'm trying to create a Scheme function that will automatically calculate
> and enact a *rall*. as a sequence of \tempo assignments. I am aware of
> the basic *rall*., *rit*., and *accel*. functions in "articulate.ly" but
> I wanted something I have a little more control over.
>
> I need help, and I don't know if it's just in the implementation details
> or my overall approach to the problem.
>
> For now, it's just a *rall*. The algorithm describing the rate of
> slowdown is extremely basic but that can be adjusted later.
>
> My approach so far has been to create a list of values starting at 100
> (let's assume percentages of the initial tempo and work that in later) and
> then have them trickle down. Using #(display ...), I see this is working
> just fine.
>
> Clearly my \repeat call isn't appropriate here and I should replace it
> with a recursive function call containing just its body (the {\tempo 4 =
> ... \skip ...} part). And I'm sure I'm not really going to get anywhere
> with #@tempi-list but I hope it communicates what I'm aiming for. I've been
> playing with this for a few hours but I haven't been able to get the parts
> to mesh together. I could keep stabbing at it, or ask for help here.
>
> Code attached, and thank you!
>
myRall.ily
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