Flow Fields

function setup() {

  createCanvas(w=720, h=w);

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  colorMode(HSB);

  background(98);

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  push();

  strokeWeight(1);

  stroke(10, 0.75);

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  translate(w/2, h/2);

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  let draw_scale = 150;

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  let L = 1000;

  let N = 100;

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  for(let l=0;l<L;l++){

    let x = random(-1,1)*2.5;

    let y = random(-1,1)*2.5;

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    for(let i=0;i<N;i++){

      x += cos(TAU*noise(x*1.2, y*1.5, 0.2))*0.01;

      y += sin(TAU*noise(x*1.5, y*1.2, 0.3))*0.01;

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      point(draw_scale*x, draw_scale*y);

    }

  }

  pop();

}

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//save PNG

function keyPressed() {

  let name = "img_" + month() + day() + hour() + minute() + second();

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  save(name + ".png");

}