​

let radius

​

function setup() {

  createCanvas(500,500)

​

  v1ang = random(TWO_PI);

  v2ang = random(TWO_PI);

  cx = width/2;

  cy = height/2;

  radius = 100; 

  stroke(200,100,100);

}

​

function draw() {

  background(100,100,120);

​

  fill(30,30);

  strokeWeight(1);

  ellipse(cx, cy, 195,195);

​

  line (cx, cy, cx + cos(v1ang)*radius, cy + sin(v1ang)*radius);

  strokeWeight(2);

  line (cx, cy, cx + cos(v2ang)*radius, cy + sin(v2ang)*radius);

​

  fill(100,80,80);

  fill(0, 102, 153);

​

  v2ang += sin(v1ang-v2ang)/7

}

​

function mousePressed(){

  v1ang = random(TWO_PI);

}