import { isPDFInstance, PDFClasses } from '../../api/objects';
import type { Coordinates } from '../../types';

import { isEqual, plus } from '../maths';
import GraphElement from './GraphElement';

export default class Point extends GraphElement {
  static className = () => PDFClasses.Point;
  myClass(): PDFClasses {
    return PDFClasses.Point;
  }
  static type = 'PointFixed';

  x: number;
  y: number;

  constructor(coords = { x: 0, y: 0 }) {
    super();
    this.x = coords.x;
    this.y = coords.y;
  }

  toCoords() {
    return { x: this.x, y: this.y };
  }

  isEqual(element: GraphElement): boolean {
    if (!isPDFInstance(element, PDFClasses.Point)) return false;
    const A = this.toCoords();
    const B = (element as Point).toCoords();
    return isEqual(A.x, B.x) && isEqual(A.y, B.y);
  }

  orthoProjection() {
    return new Point(this.toCoords());
  }

  plus(vect: Coordinates) {
    const P = new Point(plus(this.toCoords(), vect));
    return P;
  }
}