<?php
/**
 * geographic.php
 *
 * Copyright 2018 Andy Street <andy@street.me.uk>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
 * MA 02110-1301, USA.
 *
 *
 */

namespace libgpx;

/**
 * Common functions for geographic elements.
 *
 * @author Andy Street <andy@street.me.uk>
 */
interface Geographic
{

  /**
   * Fetch a bounding box that covers the feature.
   *
   * @return Bounds|null A bounding box covering the extent of the feature or
   *         null if not applicable.
   */
  public function getBounds();

  /**
   * Fetch the length of a geographic element.
   *
   * @return float The length in meters.
   */
  public function getLength();

}