// Uses https://github.com/zenozeng/p5.js-svg to export SVG.

​

var bExportSvg = false;

var runDrawing = true;

​

function setup() {

  createCanvas(600, 600, SVG);

}

​

function draw() {

  if (runDrawing == true) {

    background(230);

    if (bExportSvg) clear();

    strokeWeight(0.2);

    noFill();

​

    var cx = width / 2;

    var cy = height / 2;

    var px = cx;

    var py = cy;

​

    var direction = random(PI / 2, PI);

​

    beginShape();

​

    for (var i = 0; i < 2000; i++) {

      var increment = 3 + noise(i / 1000);

      var displacementX = px - cx;

      var displacementY = py - cy;

      var offset = max(3, sqrt(displacementX ** 2 + displacementY ** 2) / 20);

      increment *= 0.7 * offset;

      direction += radians(50 * (noise(i) - 10));

​

      px += 5 * noise(i) * increment * cos(200 * direction);

      py += 5 * noise(i) * increment * sin(200 * direction);

​

      var pointX = cx + displacementX * offset ** -0.8;

      var pointY = cy + displacementY * offset ** -0.8;

​

      vertex(pointX, pointY);

    }

​

    endShape();

    var seed = millis()**0.5;

    randomSeed(seed);

    noiseSeed(seed); //random noise value generated for each drawing coordinated with the seconds function, inspired by Golan Levin's Linewalk

    loop();

  }

  if (bExportSvg) {

    saveSVG("stickz_line_on_a_walk.svg");

    bExportSvg = false;

  } 

}

​

function keyPressed() {

  if (key == "s") {

    bExportSvg = true;

    loop();

  }

  if (keyCode === 32) { //if SPACEBAR is pressed, pause drawing

    if (runDrawing == false) runDrawing = true;

    else runDrawing = false;

  }

}

​