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Delete Vertex pada Google Map

2017-12-09
admin

Berikut adalah contoh program untuk delete vertex pada google map.

<!DOCTYPE html>
<html>
  <head>
    <meta name="viewport" content="initial-scale=1.0, user-scalable=no">
    <meta charset="utf-8">
    <title>Deleting a vertex</title>
    <style>
      /* Always set the map height explicitly to define the size of the div
       * element that contains the map. */
      #map {
        height: 100%;
      }
      /* Optional: Makes the sample page fill the window. */
      html, body {
        height: 100%;
        margin: 0;
        padding: 0;
      }
      .delete-menu {
        position: absolute;
        background: white;
        padding: 3px;
        color: #666;
        font-weight: bold;
        border: 1px solid #999;
        font-family: sans-serif;
        font-size: 12px;
        box-shadow: 1px 3px 3px rgba(0, 0, 0, .3);
        margin-top: -10px;
        margin-left: 10px;
        cursor: pointer;
      }
      .delete-menu:hover {
        background: #eee;
      }
    </style>
    <script src="https://maps.googleapis.com/maps/api/js?key=YOUR_API_KEY"></script>
    <script>
      function initialize() {
        var mapOptions = {
          zoom: 3,
          center: new google.maps.LatLng(-6.9691377,108.9729246),
          mapTypeId: 'terrain'
        };

        var map = new google.maps.Map(document.getElementById('map'), mapOptions);

        var flightPlanCoordinates = [
          new google.maps.LatLng(-6.5958845,107.4440923),
          new google.maps.LatLng(-6.6407947,107.6976926),
          new google.maps.LatLng(-7.1758121,108.5959127),
          new google.maps.LatLng(-6.9769447,109.8414482)
        ];
        var flightPath = new google.maps.Polyline({
          path: flightPlanCoordinates,
          editable: true,
          strokeColor: '#FF0000',
          strokeOpacity: 1.0,
          strokeWeight: 2,
          map: map
        });

        var deleteMenu = new DeleteMenu();

        google.maps.event.addListener(flightPath, 'rightclick', function(e) {
          // Check if click was on a vertex control point
          if (e.vertex == undefined) {
            return;
          }
          deleteMenu.open(map, flightPath.getPath(), e.vertex);
        });
      }

      /**
       * A menu that lets a user delete a selected vertex of a path.
       * @constructor
       */
      function DeleteMenu() {
        this.div_ = document.createElement('div');
        this.div_.className = 'delete-menu';
        this.div_.innerHTML = 'Delete';

        var menu = this;
        google.maps.event.addDomListener(this.div_, 'click', function() {
          menu.removeVertex();
        });
      }
      DeleteMenu.prototype = new google.maps.OverlayView();

      DeleteMenu.prototype.onAdd = function() {
        var deleteMenu = this;
        var map = this.getMap();
        this.getPanes().floatPane.appendChild(this.div_);

        // mousedown anywhere on the map except on the menu div will close the
        // menu.
        this.divListener_ = google.maps.event.addDomListener(map.getDiv(), 'mousedown', function(e) {
          if (e.target != deleteMenu.div_) {
            deleteMenu.close();
          }
        }, true);
      };

      DeleteMenu.prototype.onRemove = function() {
        google.maps.event.removeListener(this.divListener_);
        this.div_.parentNode.removeChild(this.div_);

        // clean up
        this.set('position');
        this.set('path');
        this.set('vertex');
      };

      DeleteMenu.prototype.close = function() {
        this.setMap(null);
      };

      DeleteMenu.prototype.draw = function() {
        var position = this.get('position');
        var projection = this.getProjection();

        if (!position || !projection) {
          return;
        }

        var point = projection.fromLatLngToDivPixel(position);
        this.div_.style.top = point.y + 'px';
        this.div_.style.left = point.x + 'px';
      };

      /**
       * Opens the menu at a vertex of a given path.
       */
      DeleteMenu.prototype.open = function(map, path, vertex) {
        this.set('position', path.getAt(vertex));
        this.set('path', path);
        this.set('vertex', vertex);
        this.setMap(map);
        this.draw();
      };

      /**
       * Deletes the vertex from the path.
       */
      DeleteMenu.prototype.removeVertex = function() {
        var path = this.get('path');
        var vertex = this.get('vertex');

        if (!path || vertex == undefined) {
          this.close();
          return;
        }

        path.removeAt(vertex);
        this.close();
      };

      google.maps.event.addDomListener(window, 'load', initialize);
    </script>
  </head>
  <body>
    <div id="map"></div>
  </body>
</html>

Tags: Google Maps

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