asMapTable make a table for remapping ranges by breakpoints

asMapTable converts a table given as breakpoints

into a signal that can be used by Shaper UGen

for remapping controllers.

E.g., remap an unevenly distributed speaker setup,

given here in angles between 0 and 2 (as for PanAz):

inpos -> outpos

0.0 -> 0.0

0.3 -> 0.4

0.7 -> 0.8

1.0 -> 1.2

1.5 -> 1.6

2.0 -> 2.0 (same as 0.0)

a = [0, 0.3, 0.7, 1, 1.5, 2.0].asMapTable;

a.plot;

// 5.1 surround setup

a = ([ 0, 30, 110, 360 - 110, 360 - 30, 360 ]/180).asMapTable;

a.plot

s.boot;

b = Buffer.sendCollection(s, a.asWavetable, 1);

b.getn(0, 255, { |a| a.postln });

c = { |inpos=0.0|

Shaper.kr(b.bufnum, inpos.wrap(0, 2)).poll;

}.play;

c.set(\inpos, -1);

c.set(\inpos, -0.99);

c.set(\inpos, -0.6);

c.set(\inpos, -0.2);

c.set(\inpos, 0.2);

c.set(\inpos, 0.6);

c.set(\inpos, 0.99);

c.set(\inpos, 1.0);