// a code example on the random2D() reference page:

// https://p5js.org/reference/p5.Vector/random2D/

​

// Use of for...of loop may need to be reconsidered,

// depending on style guidelines

​

// Advantages of this demo:

// 1. It shows the distribution, which can serve as a visual test.

// 2. It could be compared to the demo of random3D(): 

//    https://editor.p5js.org/highermathnotes/sketches/tbabFvQ6vt

// 3. The code is simpler than in the existing visual example.

​

let pts = [];

​

function setup() {

  createCanvas(400, 400);

  describe('Hundreds of points are randomly distributed along a circle, revealing its shape.');

  // create points on a circle of radius 150px

  for (let i = 0; i < 250; i++) {

    pts.push(p5.Vector.random2D().mult(150));

  }

}

​

function draw() {

  background(220);

  strokeWeight(2);

  translate(width / 2, height / 2);

  for (let pt of pts) {

    point(pt);

  }

}