Audiovisuals with SC - Example12 - many mappings

//Example12 - many mappings
(
s.latency= 0.05;
s.waitForBoot{

//--window setup
var width= 640, height= 480;
var w= Window("Example12 - many mappings", Rect(99, 99, width, height), false);
var u= UserView(w, Rect(0, 0, width, height));

//--variables
var maxNum= 30;
var theta= 0;
var prev= {Point(0, 0)}.dup(maxNum); //store previous position
var pats= {Pstutter(3, Pshuf(#[0, 0, 0, 0.1, 0.25, 0.5, 0.75, 1], inf)).asStream}.dup(maxNum);
var syns= {
SynthDef(\av, {|freq= 300, amp= 0, pan= 0, rate= 1, width= 0.2, addcf= 200|
var z= LPF.ar(Pulse.ar(freq, width), freq+addcf, amp);
Out.ar(0, Pan2.ar(z, pan));
}, #[0.05, 0.05, 0.05, 0.05, 0.01, 0.05]).play(s);
}.dup(maxNum);
s.sync;

//--interface
~num= 1;
~radius= 70;
~spread= 1;
~spreadx= 0.4;
~spready= 0.6;
~speed= 0.015;

//--main loop
u.drawFunc= {
var x, y, a, p, d, tt, ox= 0, oy= 0;
Pen.translate(width*0.5, height*0.5);
Pen.strokeColor= Color.blue(1, 0.5); //set outer ring color
tt= theta;
theta= theta+~speed;
maxNum.do{|i|
if(i<~num, {
ox= ox+cos(tt); //phase offset x
oy= oy+sin(tt); //phase offset y
x= sin(tt+ox)*~spreadx;
y= cos(tt+oy)*~spready;
tt= tt-~spread;
a= i.linexp(0, maxNum-1, 1, 0.01); //amplitude
a= a*pats[i].next; //amp rhythm pattern
a= a*y.linlin(-1, 1, 1, 0.1); //amp screen position
p= Point(x, y); //position
d= (p-prev[i]).asPolar.magnitude; //delta
Pen.fillColor= Color.blue(1, a);
Pen.fillOval(Rect.aboutPoint(p*[width, height]*0.5, ~radius*a, ~radius*a));
Pen.line(Point(0, 0), p*[width, height]*0.5);
Pen.stroke;
syns[i].set(
\freq, y.linexp(-1, 1, i+2*80, 80)+d.linexp(0, 2.83, 0.001, 10000),
\addcf, a.linexp(0, 1, 100, 8000),
\width, 0.2+d.min(0.79),
\amp, a,
\pan, x
);
prev= prev.put(i, p);
}, {
syns[i].set(\amp, 0);
});
};
};

//--window management
u.clearOnRefresh= true;
u.background= Color.white;
w.onClose= {syns.do{|x| x.free}};
w.front;
u.animate= true;
CmdPeriod.doOnce({if(w.isClosed.not, {w.close})});
};
)

//change these while the program is running
~num= 2;
~num= 3;
~num= 4;
~num= 5;
~num= 6;
~spread= 0;
~spready= -0.1
~speed= 0.1
~spread= 1;
~spready= 2
~speed= 0.02;
~spready= 0.6
~speed= 0.005
~spready= 0.1;
~spreadx= 0.1;
~spread= 0.1
~spread= pi;
~num= 12;
~spread= pi*0.9;
~spreadx= 0.9;
~spready= 0.9;
~spread= 2pi
~num= 3;
~num= 30;

//close the window to stop or press cmd+.