text: // Copyright (c) 2015 Uber Technologies, Inc.
  
  // Permission is hereby granted, free of charge, to any person obtaining a copy
  // of this software and associated documentation files (the "Software"), to deal
  // in the Software without restriction, including without limitation the rights
  // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  // copies of the Software, and to permit persons to whom the Software is
  // furnished to do so, subject to the following conditions:
  
  // The above copyright notice and this permission notice shall be included in
  // all copies or substantial portions of the Software.
  
  // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  // THE SOFTWARE.
  
  import {Component, createElement} from 'react';
  import PropTypes from 'prop-types';
  import ViewportMercator from 'viewport-mercator-project';
  
  const propTypes = {
    width: PropTypes.number.isRequired,
    height: PropTypes.number.isRequired,
    latitude: PropTypes.number.isRequired,
    longitude: PropTypes.number.isRequired,
    zoom: PropTypes.number.isRequired,
    redraw: PropTypes.func.isRequired,
    isDragging: PropTypes.bool.isRequired
  };
  
  export default class SVGOverlay extends Component {
    render() {
      const {width, height, isDragging} = this.props;
      const style = Object.assign({
        pointerEvents: 'none',
        position: 'absolute',
        left: 0,
        top: 0
      }, this.props.style);
      const mercator = ViewportMercator(this.props);
      const {project, unproject} = mercator;
  
      return (
        createElement('svg', {
          ref: 'overlay',
          width,
          height, style
        },
          this.props.redraw({width, height, project, unproject, isDragging})
        )
      );
    }
  }
  
  SVGOverlay.displayName = 'SVGOverlay';
  SVGOverlay.propTypes = propTypes;
  