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/*** module: node_modules/absol/src/Math/Vec2.js ***/
"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = void 0;

/***
 *
 * @param  {Number} x
 * @param {Number} y
 * @constructor
 */
function Vec2(x, y) {
  this.x = x;
  this.y = y;
}
/***
 *
 * @returns {Vec2}
 */


Vec2.prototype.copy = function () {
  return new Vec2(this.x, this.y);
};
/***
 *
 * @returns {string}
 */


Vec2.prototype.toString = function () {
  return "(" + this.x + ", " + this.y + ")";
};
/***
 *
 * @returns {number}
 */


Vec2.prototype.abs = function () {
  return Math.sqrt(this.x * this.x + this.y * this.y);
};
/***
 *
 * @returns {Vec2}
 */


Vec2.prototype.normalized = function () {
  var l = this.abs();
  if (l == 0) l = 1;
  return this.div(l);
};
/***
 *
 * @param {number} h
 * @returns {Vec2}
 */


Vec2.prototype.mult = function (h) {
  return new Vec2(this.x * h, this.y * h);
};
/***
 *
 * @param {number} h
 * @returns {Vec2}
 */


Vec2.prototype.div = function (h) {
  return new Vec2(this.x / h, this.y / h);
};
/***
 *
 * @param v
 * @returns {number}
 */


Vec2.prototype.dist = function (v) {
  var dx = v.x - this.x;
  var dy = v.y - this.y;
  return Math.sqrt(dx * dx + dy * dy);
};
/***
 *
 * @param {Vec2} v
 * @returns {Vec2}
 */


Vec2.prototype.sub = function (v) {
  return new Vec2(this.x - v.x, this.y - v.y);
};
/***
 *
 * @param {Vec2} v
 * @returns {Vec2}
 */


Vec2.prototype.add = function (v) {
  return new Vec2(this.x + v.x, this.y + v.y);
};
/***
 *
 * @returns {Vec2}
 */


Vec2.prototype.inv = function () {
  return new Vec2(-this.x, -this.y);
};
/***
 *
 * @param {Vec2} v
 * @param {number} h
 * @returns {Vec2}
 */


Vec2.prototype.linear = function (v, h) {
  return new Vec2(this.x * (1 - h) + v.x * h, this.y * (1 - h) + v.y * h);
};
/***
 *
 * @param {Vec2} v1
 * @returns {number}
 */


Vec2.prototype.dot = function (v1) {
  return this.x * v1.x + this.y * v1.y;
};
/***
 *
 * @param {Vec2} v1
 * @returns {number}
 */


Vec2.prototype.cross = function (v1) {
  return this.x * v1.y - this.y * v1.x;
};
/***
 *
 * @returns {number}
 */


Vec2.prototype.direction = function () {
  return Math.atan2(this.y, this.x);
};
/***
 *
 * @param {Number} dx
 * @param {Number} dy
 */


Vec2.prototype.translate = function (dx, dy) {
  return this.add(new Vec2(dx, dy));
};
/****
 *
 * @param {Number} angle - radian
 * @returns {Vec2}
 */


Vec2.prototype.rotate = function (angle) {
  var sinA = Math.sin(angle);
  var cosA = Math.cos(angle);
  var x = this.x * cosA - this.y * sinA;
  var y = this.x * sinA + this.y * cosA;
  return new Vec2(x, y);
};
/***
 *
 * @returns {Vec2}
 */


Vec2.prototype.rotate90 = function () {
  return new Vec2(-this.y, this.x);
};
/***
 *
 * @param {Vec2} b
 */


Vec2.prototype.equals = function (b) {
  return b && this.x === b.x && this.y === b.y;
};
/***
 *
 * @param {number} angle
 * @returns {Vec2}
 */


Vec2.fromDirection = function (angle) {
  return new Vec2(Math.cos(angle), Math.sin(angle));
};
/***
 *
 * @param x
 * @param y
 * @returns {Vec2}
 */


Vec2.make = function (x, y) {
  if (x instanceof Array) {
    return new Vec2(x[0], x[1]);
  } else if (x instanceof Vec2) {
    return x.copy();
  } else return new Vec2(x, y);
};

Vec2.ZERO = new Vec2(0, 0);
Vec2.OX = new Vec2(1, 0);
Vec2.OY = new Vec2(0, 1);
var _default = Vec2;
exports.default = _default;