pakt13

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

//pakt13
let index
let rows, cols
let grad
function setup() {
  const div = select('#sketch')
  const cnv = createCanvas(div.width, div.height)
  cnv.parent('sketch')
  frameRate(60)
  index = 0
  rows = 11
  cols = 11
  grad = createGraphics(width, height)
  grad.noStroke()
  for (let r = width; r > 0; --r) {
    grad.fill(
      lerpColor(color(0.5 * 255, 0.6 * 255, 0.5 * 255), color(0, 0, 0), r / width)
    )
    grad.ellipse(width * 0.5, height * 0.5, r * 2.0, r * 2.0)
  }
  fill(255)
  noStroke()
}
function draw() {
  clear()
  background(0)
  blendMode(DIFFERENCE)
  beginShape(QUADS)
  for (let y = 0; y <= rows; y++) {
    for (let x = 0; x <= cols; x++) {
      const xx = (x / rows) * width - 2
      const yy = (y / cols) * height - 2
      const vx = sin(index + x * y) *
        (sin((index + x) * 0.0015) + sin((index + y) * 0.0062) * 10)
      const vy = cos(index + x * y) *
        (sin((index + y) * 0.0325) + sin((index + y) * 0.0072) * 10)
      vertex(vx - xx, vy - yy)
      vertex(vx + xx, vy - yy)
      vertex(vx + xx, vy + yy)
      vertex(vx - xx, vy + yy)
    }
  }
  endShape()
  blendMode(LIGHTEST)
  image(grad, 0, 0)
  index++
}

Ndef(\pulse).play
(
Ndef(\pulse, {GVerb.ar(Splay.ar(Resonz.ar(LFPulse.ar(#[121, 232, 343]), LFPulse.ar(#[0.121, 0.232, 0.343]).exprange(LFPulse.ar(#[12.1, 23.2, 34.3]).range(80, 100), LFPulse.ar(#[1.21, 2.32, 3.43].reverse).range(800, 1000)).sum*LFPulse.ar(#[0.121, 0.232, 0.343]).range(0.5, 1), 0.3, 0.15)), 34, 3, 0.2)});
)
Ndef(\pulse).stop