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Audiovisuals with SC - Example04b - higher is lower
See /f0blog/audiovisuals-with-sc/
//Example04b - higher is lower
//only one line differs from Example04b. the one in the main loop where we invert the mapping.
(
s.latency= 0.05;
s.waitForBoot{
//--window setup
var width= 640, height= 480;
var w= Window("Example04b - higher is lower", Rect(99, 99, width, height), false);
var u= UserView(w, Rect(0, 0, width, height));
//--variables
var pat= Pn(Pshuf(#[0, 0, 0, 0, 0.1, 0.25, 0.5, 0.75, 1, 1], 8), inf).asStream;
var syn= SynthDef(\av, {|scaleFreq= 0|
var z= LPF.ar(LFSaw.ar(#[300, 301, 80, 81]*(scaleFreq+0.5)).mean, 2000);
Out.ar(0, Pan2.ar(z));
}, #[0.05]).play(s); //short lag time to avoid clipping
var fre= 1;
//--interface
~radius= 50;
~fps= 10;
~spready= 240;
//--main loop
u.drawFunc= {
fre= pat.next; //get the next value from the stream
syn.set(\scaleFreq, fre); //send to the synth
fre= 1-fre; //here we invert the mapping
Pen.translate(width*0.5, height*0.5); //offset drawing to the centre
Pen.fillColor= Color.white; //always fill with white color
Pen.fillOval(Rect.aboutPoint(Point(0, 1-fre-0.5*~spready), ~radius, ~radius));
};
//--window management
u.clearOnRefresh= true;
u.background= Color.black;
w.onClose= {syn.free};
w.front;
CmdPeriod.doOnce({w.close});
Routine({
var nextTime;
while({w.isClosed.not}, {
nextTime= Main.elapsedTime+(1/~fps);
u.refresh;
(nextTime-Main.elapsedTime).max(0.001).wait;
});
}).play(AppClock);
};
)
//change these while the program is running
~radius= 150;
~radius= 25;
~fps= 30;
~fps= 15;
~spready= 400;
~fps= 5;
~radius= 5;
//close the window to stop or press cmd+.