Source: tiny/core/math/Point.js

/**
 * The Point object represents a location in a two-dimensional coordinate system, where x represents the horizontal axis and y represents the vertical axis.
 *
 * @class
 * @memberof Tiny
 */
export default class Point {
  /**
   * @param {number} [x=0] - position of the point on the x axis
   * @param {number} [y=0] - position of the point on the y axis
   */
  constructor(x = 0, y = 0) {
    /**
     * @member {number}
     * @default 0
     */
    this.x = x;

    /**
     * @member {number}
     * @default 0
     */
    this.y = y;
  }

  /**
   * Creates a clone of this point
   *
   * @return {Tiny.Point} a copy of the point
   */
  clone() {
    return new Point(this.x, this.y);
  }

  /**
   * Copies x and y from the given point
   *
   * @param {Tiny.Point} p - The point to copy.
   */
  copy(p) {
    this.set(p.x, p.y);
  }

  /**
   * Returns true if the given point is equal to this point
   *
   * @param {Tiny.Point} p - The point to check
   * @return {boolean} Whether the given point equal to this point
   */
  equals(p) {
    return (p.x === this.x) && (p.y === this.y);
  }

  /**
   * Sets the point to a new x and y position.
   * If y is omitted, both x and y will be set to x.
   *
   * @param {number} [x=0] - position of the point on the x axis
   * @param {number} [y=0] - position of the point on the y axis
   */
  set(x, y) {
    this.x = x || 0;
    this.y = y || ((y !== 0) ? this.x : 0);
  }
}