Source: common/point.js

/**
 * The Point object represents a location in a two-dimensional coordinate system.
 *
 */
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
  }

  /**
   * Returns the distance between two points.
   *
   * @param {Point} point - Anther point object
   * @return {Number}
   */
  distance (point) {
    return Math.hypot(this.x - point.x, this.y - point.y)
  }

  /**
   * Returns the analytic distance([xDistance, yDistance]) between two points.
   * `Math.pow(point.distanceAxis[0], 2) + Math.pow(point.distanceAxis[1], 2) == Math.pow(point.distance, 2)`
   *
   * @param {Point} point - Anther point object
   * @return {Array<Number, Number>}
   */
  distanceAxis (point) {
    return [this.x - point.x, this.y - point.y]
  }
}

export default Point