pakt18

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

//pakt18
let index
let a, b, c, d
let spread
let n
function setup() {
  const div = select('#sketch')
  const cnv = createCanvas(div.width, div.height)
  cnv.parent('sketch')
  frameRate(60)
  noFill()
  index = 0
  n = 50
}
function draw() {
  spread = sin(index * 0.002) * 50.0 + sin(index * 0.003) * 40
  background(0)
  for (let i = 1; i < n; i++) {
    stroke(255, 255, 255, sin((i / n) * PI) * 255)
    a = sin((i * spread + index) * sin(index * 0.0025 + sin(index * 0.005)) * 0.005) * 0.45 + 0.5
    b = sin((i * spread + index) * sin(index * 0.0024 + sin(index * 0.0051)) * 0.005) * 0.45 + 0.5
    c = sin((i * spread + index) * sin(index * 0.0023 + sin(index * 0.0052)) * 0.005) * 0.45 + 0.5
    d = sin((i * spread + index) * sin(index * 0.0022 + sin(index * 0.0053)) * 0.005) * 0.45 + 0.5
    line(a * width, b * height, c * width, d * height)
    line(b * width, a * height, d * width, c * height)
  }
  index++
}

Ndef(\grey).play
(
Ndef(\grey, {Mix({|i|
  var t= Impulse.ar(SinOsc.ar(0.1+(i*0.125), i/10*2pi+#[0, 0.1], 4, SinOsc.ar(0.01+(i*0.01), 0, 4, 12)));
  Pan2.ar(
    FreeVerb.ar(
      BPF.ar(
        GrayNoise.ar(
          Decay2.ar(
            t,
            TRand.ar(0.005, 0.015, t),
            TRand.ar(0.1, 0.15, t),
            TRand.ar(0.35, 0.5, t)
          )
        ),
        SinOsc.ar(i+1*0.032, #[0, 0.1]+i).exprange(i+1*300, i+1*600),
        SinOsc.ar(i+1*0.025, #[0, 0.1]+i).range(0.1, 1)
      ),
      0.3
    ),
    SinOsc.ar(0.1, #[0, 0.1]+i, 0.9)
  );
}!10)});
)
Ndef(\grey).stop