pakt05

Built with p5.js and SuperCollider. See /f0blog/pact-februari/

//pakt05
let index, n;
let grad;
function setup() {
  let div= select('#sketch');
  let cnv= createCanvas(div.width, div.height);
  cnv.parent('sketch');
  frameRate(60);
  noFill();
  strokeWeight(1);
  index= 0;
  n= 100;
  grad= createGraphics(width, height);
  grad.noStroke();
  for(let r= width; r>0; --r) {
    grad.fill(lerpColor(color(0.5*255, 0.4*255, 0.3*255), color(0, 0, 0), r/width));
    grad.ellipse(width*0.5, height*0.5, r*2.0, r*2.0);
  }
  stroke(255, 255, 255, 0.8*255);
}
function draw() {
  let x= width*0.5;
  let y= height*0.5;
  let w= width*0.3;
  let h= height*0.275;
  let spread= sin(index*0.0012)*20;
  let speed1= sin(index*0.0013)*0.001+0.005;
  let speed2= sin(index*0.0014)*0.001+0.0005;
  let speed3= sin(index*0.0015)*0.001+0.014;
  let speed4= sin(index*0.0016)*0.001+0.012;
  image(grad, 0, 0);
  for(let i= 0; i<n; i++) {
    let px= x+(sin((index*i*speed1))+sin(index*i*speed2)*w)-i;
    let py= y+sin((index+(i*spread))*speed3)*sin((index+i)*speed4)*h+i;
    line(px+(n-i), py+(i-n), px, py);
  }
  index++;
}

Ndef(\noises).play
(
Ndef(\noises, {
  var freq= SinOsc.ar(SinOsc.ar((4..0)/150+SinOsc.ar((0..4)/18, 0, 0.8)), SinOsc.ar((0..4)/80+SinOsc.ar((0..4)/20, 0, 0.1), 0, 2pi)).exprange(100, 1000);
  var rq= SinOsc.ar(SinOsc.ar((0..4)/6+SinOsc.ar((0..4)/19, 0, 0.7), SinOsc.ar((4..0)/5+SinOsc.ar((4..0)/2, 0, 0.1), 0, 2pi))).exprange(0.4, 4);
  Splay.ar(BPF.ar(BPF.ar(ClipNoise.ar(1!5), freq, rq), freq, rq), 0.85);
});
)
Ndef(\noises).stop