text: // This file is part of snark, a generic and flexible library for robotics research
  // Copyright (c) 2011 The University of Sydney
  // All rights reserved.
  //
  // Redistribution and use in source and binary forms, with or without
  // modification, are permitted provided that the following conditions are met:
  // 1. Redistributions of source code must retain the above copyright
  //    notice, this list of conditions and the following disclaimer.
  // 2. Redistributions in binary form must reproduce the above copyright
  //    notice, this list of conditions and the following disclaimer in the
  //    documentation and/or other materials provided with the distribution.
  // 3. Neither the name of the University of Sydney nor the
  //    names of its contributors may be used to endorse or promote products
  //    derived from this software without specific prior written permission.
  //
  // NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE
  // GRANTED BY THIS LICENSE.  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT
  // HOLDERS AND CONTRIBUTORS \"AS IS\" AND ANY EXPRESS OR IMPLIED
  // WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
  // MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  // DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
  // LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  // CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  // SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
  // BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
  // WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
  // OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
  // IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  
  define(function () {
  
      function MapOptions(options, global_options) {
          Object.assign(this, options);
          this.bing_maps_key = this.bing_maps_key || global_options.bing_maps_key || '';
          this.imagery_set = this.imagery_set || (this.image ? '' : 'Aerial');
          this.image = this.image || '';
          this.extent = this.extent || '';
          this.follow = this.follow || false;
          this.trail = this.trail || false;
          this.draw_interval = this.draw_interval || 100;
          this.alpha_step = this.alpha_step || 0;
          this.radius = this.radius || 5;
          this.fill = this.fill || '#3aee23';
          this.stroke = this.stroke || '#10a81a';
          this.stroke_width = this.stroke_width || 2;
      }
  
      return MapOptions;
  });
  