var polygons = [];

​

function setup() {

  createCanvas(800, 800);

  polygons.length = 0;

  for ( i =0; i < polygons.length; i ++){

    polygons[i] = new Polygon(100,100,50,3)

  }

}

​

function draw() {

  background(220);

  for (i = 0; i < polygons.length; i++) {

    polygons[i].display();

  }

}

​

class Polygon {

  constructor(_x, _y, _r, _npoints) {

    this.x = _x;

    this.y = _y;

    this.r = _r;

    this.npoints = _npoints;

  }

  display() {

    var angle = TWO_PI / this.npoints;

    noFill();

    beginShape();

    for (var a = 0; a < TWO_PI; a += angle) {

      var sx = this.x + cos(a) * this.r;

      var sy = this.y + sin(a) * this.r;

      vertex(sx, sy);

    }

    endShape(CLOSE);

  }

}

​

function mousePressed() {

  let r = random(10, 100);

  let n = random(3, 20);

  polygons.push(new Polygon(mouseX, mouseY, r, n));

​

}