pakt29

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

//pakt29
let cols, rows, index;
let oy;
let dashes= [];
function setup() {
  let div= select('#sketch');
  let cnv= createCanvas(div.width, div.height);
  cnv.parent('sketch');
  frameRate(60);
  colorMode(HSB, 255);
  strokeWeight(20);
  cols= 20;
  rows= 20;
  index= 0;
  oy= 0.025*height;
  dashes= [];
}
function draw() {
  background(0);
  for(let x= 0; x<cols; x++) {
    let t= x/cols;
    let xx= t*width+(0.5/cols*width);
    stroke(color(((sin(t*PI)*0.25+(index*0.0004+(x*0.02)))*255)%255, map(sin(t*PI), -1, 1, 0, 127), map(sin(t*PI), -1, 1, 0, 255)));
    for(let y= 0; y<rows; y++) {
      dashes[y]= sin((index+y)*(sin((index*0.1+(x*0.35))*0.01)*0.015))*10+(sin((index+x)*0.003)*40+70);
    }
    let off= index%(dashes[0]+dashes[1]);
    let yy= height-oy;
    let i= 0;
    while(yy>(-0.5*height)) {
      let d= dashes[i%rows];
      if(i%2==0) {
        let start= constrain(yy+off, oy, height-oy);
        let end= constrain(yy-d+off, oy, height-oy);
        if(start!=end) {
          line(xx, start, xx, end);
        }
      }
      yy -= d;
      i += 1;
    }
  }
  index++;
}

Ndef(\wrap).play
(
Ndef(\wrap, {var n= 29; Splay.ar({|i|
  var w= i+LFSaw.ar(i+1*SinOsc.ar(0.1, i/n*2pi, 1, 0.1), 0, 2, 2);
  Saw.ar(340+LFSaw.ar(0.1, i/n, 10, 10).round(20)+i)%Saw.ar(60+w, SinOsc.ar(0.01, i/n*2pi, 2, 2.05))*0.25;
}!n)});
)
Ndef(\wrap).stop