Example: Noise Fabric

let step = 1;
let scale = 0.03;
let amplitude = 2;


function setup() {
  createCanvas(640, 480);
  noFill();

  const scaleSlider = createLabeledSlider(0, 0.1, scale, 0.001, "Scale")
  scaleSlider.position(10, height + 20);
  scaleSlider.changed(()=>
    scale = scaleSlider.value()
  );

  const amplitudeSlider = createLabeledSlider(0, 10, amplitude, 0.1, "Amplitude")
  amplitudeSlider.position(10, height + 70);
  amplitudeSlider.changed(()=>
    amplitude = amplitudeSlider.value()
  );

  const stepSlider = createLabeledSlider(0.1, 5, step, 0.1, "Step")
  stepSlider.position(10, height + 120);
  stepSlider.changed(()=>
    step = stepSlider.value()
  );


}

function draw() {
  background(255);
  stroke(0, 32);

  for (let j = 0; j < height; j+= 2){
    let y = j;

    beginShape();
    for (let x = -30; x < width; x += step){
      const n = amplitude * (noise(x * scale, j * scale, frameCount*scale*.1) - 0.5);
      y += n;
      vertex(x, y);
     
    }
    endShape();
  }
}