constructor(len, r) {

    this.pos = createVector(0, 0);

    this.other = this.pos.copy(); //copy the this.pos vector

    this.vel = createVector(0, 0.5);

    this.acc = createVector(0, 0.1);

​

    this.r = r;

    this.len = len;

​

    this.a = 0;

    this.velA = 0.1;

    this.accA = 0;

  }

​

  show() {

    stroke(255);

​

    push();

    translate(width / 2, height / 2);

    rotate(this.a);

    line(this.pos.x, this.pos.y, this.other.x + this.len, this.other.y);

    fill(255);

    noStroke();

    circle(this.pos.x, this.pos.y, this.r * 5);

    circle(this.other.x + this.len, this.other.y, this.r);

    pop();

  }

​

  update() {

    this.vel.add(this.acc);

    this.other.add(this.vel);

​

    this.accA = this.acc.y;

​

    this.velA += this.accA;

    this.a += this.velA;

​

    this.acc.set(0, 0);

  }

}

​