@giro3d/giro3d/sources/NullSource.js

A JS/WebGL framework for 3D geospatial data visualization

/*
 * Copyright (c) 2015-2018, IGN France.
 * Copyright (c) 2018-2026, Giro3D team.
 * SPDX-License-Identifier: MIT
 */

import CoordinateSystem from '../core/geographic/CoordinateSystem';
import Extent from '../core/geographic/Extent';
import ImageSource from './ImageSource';

/**
 * An image source that produces nothing. Mainly for debugging/testing purposes.
 */
class NullSource extends ImageSource {
  isNullSource = true;
  type = 'NullSource';
  constructor(options = {}) {
    super();
    this._extent = options?.extent ?? new Extent(CoordinateSystem.epsg3857, 0, 10, 0, 10);
  }
  getCrs() {
    return this._extent.crs;
  }
  getImages() {
    return [];
  }
  getExtent() {
    return this._extent;
  }
}
export default NullSource;