let rectBound = function (xmin, ymin, xmax, ymax) {
  if (xmin && ymin && xmax && ymax) {
    this.xmin = xmin; this.xmax = xmax; this.ymin = ymin; this.ymax = ymax;
  }
  else this.init();
}

rectBound.prototype.init = function () {
  this.xmin = this.ymin = Number.MAX_SAFE_INTEGER + 1;
  this.xmax = this.ymax = Number.MIN_SAFE_INTEGER + 1
}

rectBound.prototype.updateP = function (v) {
  if (v.x < this.xmin)
    this.xmin = v.x;
  if (v.y < this.ymin)
    this.ymin = v.y;
  if (v.x > this.xmax)
    this.xmax = v.x;
  if (v.y > this.ymax)
    this.ymax = v.y;
}

rectBound.prototype.updateR = function (rect) {
  if (this.xmin > rect.xmin)
    this.xmin = rect.xmin;
  if (this.ymin > rect.ymin)
    this.ymin = rect.ymin;
  if (this.xmax < rect.xmax)
    this.xmax = rect.xmax;
  if (this.ymax < rect.ymax)
    this.ymax = rect.ymax;
}

rectBound.prototype.width = function () {
  return Math.abs(this.xmax - this.xmin);
}

rectBound.prototype.height = function () {
  return Math.abs(this.ymax - this.ymin);
}

rectBound.prototype.center = function () {
  return { x: (this.xmin + (this.width() / 2)), y: this.ymin + (this.height() / 2) };
}

rectBound.prototype.contains = function (p) {
  return (this.xmin <= p.x && p.x <= this.xmax && this.ymin <= p.y && p.y <= this.ymax);
}

module.exports = { Bound: rectBound }