// https://thecodingtrain.com/CodingChallenges/145-2d-ray-casting.html

// https://youtu.be/TOEi6T2mtHo

​

// 2D Ray Casting

​

class Boundary {

  constructor(x1, y1, x2, y2) {

    this.a = createVector(x1, y1);

    this.b = createVector(x2, y2);

  }

​

  show() {

    stroke(255);

    line(this.a.x, this.a.y, this.b.x, this.b.y);

  }

  get center() {

    const 

      a = this.a.copy(),

      b = this.b.copy();

    b.sub(a);

    b.mult(0.5);

    b.add(a);

    return b;

  }

}

​