let angleV = 0.04; //use '-' to make it move counterclockwise

let angleA = 0.00001;

​

function setup() {

  createCanvas(640, 240);

}

​

function draw() {

  background(255);

​

  // angleA = map(mouseX, 0, width, -0.01, 0.01);

  // angleV = constrain(angleV, -0.2, 0.2);

​

  fill(127);

  stroke(0);

  translate(width / 2, height / 2);

  rotate(angle);

  line(-50, 0, 50, 0);

  stroke(0);

  strokeWeight(2);

  fill(127);

  circle(50, 0, 16);

  circle(-50, 0, 16);

​

  angle += angleV;

  angleV += angleA;

}

​