Express envelope duration as relative division instead of milliseconds?

[tmhglnd]

Having a way of expressing the duration of envelopes,shape()-method, in relative divisions can give a better feel for how long a sound will last over time, and also gives the possibility to change the tempo of the piece and stretching/shrinking the envelope with it.

example

set tempo 100
new synth saw note(0 2) shape(1/16 1/4 1) time(2)
//=> is similar to: shape(150 600 2400)

set tempo 140
new synth saw note(0 2) shape(1/16 1/4 1) time(2)
//=> is similar to: shape(107 429 1714)

Questions:

• should setting the envelope in milliseconds still be possible?
• should this be a different function?
• should an extra argument make sure if it chooses between ms or timevalue?

[tmhglnd]

Instead of being able to add divisions in this method you can, since commit 86d9f03, convert division values to milliseconds with the divisionToMs() method

[tmhglnd]

Include the possibility to add the division value as argument directly into shape()

[tmhglnd]

Updated in 51041cf, added option to specify attack, decay and release times for shape() in division values. For full bars a division is still needed, so 1 bar would be equal to 1/1 and 3 bars to 3/1

example

set tempo 100

new synth saw note(0 0) time(1/2) shape(1 1/2) 
new synth saw note(0 2) time(1/2) shape(1/4 1/64)