Forums > MaxMSP

forced event-driven list interpolation

April 24, 2008 | 12:16 am

i’ve got a series of two-item lists that look like this:

45 67
49 67
52 68
52 72
52 74

etc.

i would like to build in interpolation for those lists. so as the new
lists come in, interpolated versions of them are added. it’s ok if
the lists come fast and furious. the above would be changed to

45 67 this is first event
46 67
47 67
48 67
49 67 here ends second event
50 67
51 68
52 68 here ends third event
52 69
52 70
52 71
52 72 here ends fourth event
52 73
52 74 here ends fifth event

take note of the slower interpolation of the second list item during
the third event.

anyone got a cool solution for this?

best

j


April 24, 2008 | 1:02 am

Something like this might work (but I think this code is buggy, not
able to check it right now):

(defun interplists(lst)
(cons (cons (car lst) (cadr lst))
(cond ((null lst) nil)
((= (car lst) (caddr lst))
(cond ((= (cadr lst) (cadddr lst)) (interplists
(cdddr lst)))
(t (cons (cons (car lst) (+ (cadr lst) 1))
(interplists (cddr lst)))))
)
(t (cons (cons (+ (car lst) 1) (cadr lst))
(interplists (cddr lst))))
)
)
)

[mxj maxlispj]

:-)

brad

http://music.columbia.edu/~brad

On Apr 23, 2008, at 8:16 PM, joshua goldberg wrote:

> i’ve got a series of two-item lists that look like this:
>
> 45 67
> 49 67
> 52 68
> 52 72
> 52 74
>
> etc.
>
> i would like to build in interpolation for those lists. so as the
> new lists come in, interpolated versions of them are added. it’s
> ok if the lists come fast and furious. the above would be changed to
>
> 45 67 this is first event
> 46 67
> 47 67
> 48 67
> 49 67 here ends second event
> 50 67
> 51 68
> 52 68 here ends third event
> 52 69
> 52 70
> 52 71
> 52 72 here ends fourth event
> 52 73
> 52 74 here ends fifth event
>
> take note of the slower interpolation of the second list item
> during the third event.
>
> anyone got a cool solution for this?
>
> best
>
> j
>


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