A point representing a location in (x,y) coordinate space, specified in integer precision.

point.class.ts

/**
 * A point representing a location in (x,y) coordinate space, specified in integer precision.
 */
export class Point {
  /**
   * The X coordinate of this Point.
   * @default 0
   */
  protected x: number;

  /**
   * The Y coordinate of this Point.
   * @default 0
   */
  protected y: number;

  public constructor();
  public constructor(point: Point);
  public constructor(position: [number, number]);
  public constructor(x: number, y: number);
  public constructor(paramX?: any, paramY?: any) {
    this.setLocation(paramX, paramY);
  }

  /**
   * Changes the point to have the specified location.
   */
  public setLocation(): void;
  public setLocation(point: Point): void;
  public setLocation(position: [number, number]): void;
  public setLocation(x: number, y: number): void;
  public setLocation(param?: any, param1?: any): void {
    if (typeof param === 'undefined') {
      this.x = 0;
      this.y = 0;
    } else if (param && param instanceof Point) {
      this.x = param.getX();
      this.y = param.getY();
    } else if (Array.isArray(param)) {
      this.x = param[0];
      this.y = param[1];
    } else {
      this.x = param;
      this.y = param1;
    }
  }

  /**
   * Moves this point to the specified location in the (x,y) coordinate plane.
   * This method is identical with setLocation(int, int)
   *
   * @link setLocation
   *
   * @param {number} x
   * @param {number} y
   */
  public move(x: number, y: number): void {
    this.setLocation(x, y);
  }

  /**
   * Translates this point, at location (x,y),
   * by dx along the x axis and dy along the y axis so that it now represents the point (x+dx,y+dy).
   *
   * @param {number} dx - the distance to move this point along the X axis
   * @param {number} dy - the distance to move this point along the Y axis
   */
  public translate(dx: number, dy: number): void {
    const x: number = this.x + dx;
    const y: number = this.y + dy;

    this.setLocation(x, y);
  }

  /**
   * Returns the X coordinate of this Point
   *
   * @return {number}
   */
  public getX(): number {
    return this.x;
  }

  /**
   * Set the X coordinate of this Point
   *
   * @param {number} x
   */
  public setX(x: number): void {
    this.x = x;
  }

  /**
   * Returns the Y coordinate of this Point
   *
   * @return {number}
   */
  public getY(): number {
    return this.y;
  }

  /**
   * Set the Y coordinate of this Point
   *
   * @param {number} y
   */
  public setY(y: number): void {
    this.y = y;
  }
}