Question

我不知道如何在绘制时获得多边形坐标。这段代码是针对学校项目的，我真的需要帮助。我希望有人能帮帮忙。我不知道是否有可能，抱歉我的英语不好我是葡萄牙人...... 我只想得到多边形的坐标。感谢。

<!DOCTYPE html>
<html>
  <head>
    <meta name="viewport" content="initial-scale=1.0, user-scalable=no">
    <meta charset="UTF-8">
    <title>Drawing Tools</title>
    <script type="text/javascript"
      src="http://maps.google.com/maps/api/js?sensor=false&libraries=drawing"></script>
    <style type="text/css">
      #map, html, body {
        padding: 0;
        margin: 0;
        height: 100%;
      }

      #panel {
        width: 200px;
        font-family: Arial, sans-serif;
        font-size: 13px;
        float: right;
        margin: 10px;
      }

      #color-palette {
        clear: both;
      }

      .color-button {
        width: 14px;
        height: 14px;
        font-size: 0;
        margin: 2px;
        float: left;
        cursor: pointer;
      }

      #delete-button {
        margin-top: 5px;
      }
    </style>
    <script type="text/javascript">
      var drawingManager;
      var selectedShape;
      var colors = ['#1E90FF', '#FF1493', '#32CD32', '#FF8C00', '#4B0082', '#000000'];
      var selectedColor;
      var colorButtons = {};

      function clearSelection() {
        if (selectedShape) {
          selectedShape.setEditable(false);
          selectedShape = null;
        }
      }

      function setSelection(shape) {
        clearSelection();
        selectedShape = shape;
        shape.setEditable(true);
        selectColor(shape.get('fillColor') || shape.get('strokeColor'));
      }

      function deleteSelectedShape() {
        if (selectedShape) {
          selectedShape.setMap(null);
        }
      }

      function selectColor(color) {
        selectedColor = color;
        for (var i = 0; i < colors.length; ++i) {
          var currColor = colors[i];
          colorButtons[currColor].style.border = currColor == color ? '2px solid #789' : '2px solid #fff';
        }

        // Retrieves the current options from the drawing manager and replaces the
        // stroke or fill color as appropriate.

        var polygonOptions = drawingManager.get('polygonOptions');
        polygonOptions.fillColor = color;
        drawingManager.set('polygonOptions', polygonOptions);
      }

      function setSelectedShapeColor(color) {
        if (selectedShape) {
          if (selectedShape.type == google.maps.drawing.OverlayType.POLYLINE) {
            selectedShape.set('strokeColor', color);
          } else {
            selectedShape.set('fillColor', color);
          }
        }
      }

      function makeColorButton(color) {
        var button = document.createElement('span');
        button.className = 'color-button';
        button.style.backgroundColor = color;
        google.maps.event.addDomListener(button, 'click', function() {
          selectColor(color);
          setSelectedShapeColor(color);
        });

        return button;
      }

       function buildColorPalette() {
         var colorPalette = document.getElementById('color-palette');
         for (var i = 0; i < colors.length; ++i) {
           var currColor = colors[i];
           var colorButton = makeColorButton(currColor);
           colorPalette.appendChild(colorButton);
           colorButtons[currColor] = colorButton;
         }
         selectColor(colors[0]);
       }

      function initialize() {
        var map = new google.maps.Map(document.getElementById('map'), {
          zoom: 18,
          center: new google.maps.LatLng(40.60033,-7.753715),
          mapTypeId: google.maps.MapTypeId.SATELLITE,
          disableDefaultUI: true,
          zoomControl: true
        });

        var polyOptions = {
          strokeWeight: 0,
          fillOpacity: 0.45,
          editable: true
        };
        // Creates a drawing manager attached to the map that allows the user to draw
        // markers, lines, and shapes.
       var drawingManager = new google.maps.drawing.DrawingManager({
          drawingModes: google.maps.drawing.OverlayType.POLYGON,
                    markerOptions: {
            draggable: true
          },
          polygonOptions: polyOptions,
         map: map
        });

        google.maps.event.addListener(drawingManager, 'overlaycomplete', function(e) {
            if (e.type != google.maps.drawing.OverlayType.MARKER) {
            // Switch back to non-drawing mode after drawing a shape.
            drawingManager.setDrawingMode(null);

            // Add an event listener that selects the newly-drawn shape when the user
            // mouses down on it.
            var newShape = e.overlay;
            newShape.type = e.type;
            google.maps.event.addListener(newShape, 'click', function() {
              setSelection(newShape);
            });
            setSelection(newShape);
          }
        });

        // Clear the current selection when the drawing mode is changed, or when the
        // map is clicked.
        google.maps.event.addListener(drawingManager, 'drawingmode_changed', clearSelection);
        google.maps.event.addListener(map, 'click', clearSelection);
        google.maps.event.addDomListener(document.getElementById('delete-button'), 'click', deleteSelectedShape);

        buildColorPalette();
      }
      google.maps.event.addDomListener(window, 'load', initialize);
    </script>
  </head>
  <body>
    <div id="panel">
      <div id="color-palette"></div>
      <div>
        <button id="delete-button">Delete Selected Shape</button>
      </div>
    </div>
    <div id="map"></div>
  </body>
</html>

我如何在绘图管理器中获得多边形坐标

0 个答案: