google-maps - 谷歌地图 : Dynamically Movable and Resizable Circle Overlay Script for v3

Question

好的，我刚刚找到了我正在寻找的完美脚本。

http://web3o.blogspot.com.br/2010/05/google-maps-dynamically-movable-and.html

您可以在 Google map 上添加带纬度/经度和半径的圆圈。
问题是这个脚本是 仅适用于 v2 api。

我也找到了这个
http://www.mapdevelopers.com/draw-circle-tool.php

但是没有可用的代码或源代码:(

有人知道像这样的脚本可以在 v3 上运行吗？

谢谢

Answer 1

该功能内置于 Google Maps API v3 Drawing Library
Example
您可以将其自定义为只允许圈子(或只允许一个圈子)。
Working example
代码片段:

function initialize() {
  var mapOptions = {
    center: new google.maps.LatLng(-34.397, 150.644),
    zoom: 8,
    mapTypeId: google.maps.MapTypeId.ROADMAP
  };

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

  var drawingManager = new google.maps.drawing.DrawingManager({
    drawingMode: google.maps.drawing.OverlayType.CIRCLE,
    drawingControl: false,
    drawingControlOptions: {
      position: google.maps.ControlPosition.TOP_CENTER,
      drawingModes: [
        google.maps.drawing.OverlayType.CIRCLE
      ]
    },
    circleOptions: {
      fillColor: '#ffff00',
      fillOpacity: 1,
      strokeWeight: 5,
      clickable: false,
      editable: true,
      zIndex: 1
    }
  });
  drawingManager.setMap(map);
  google.maps.event.addListener(drawingManager, 'overlaycomplete', function(e) {
    // Switch back to non-drawing mode after drawing a shape.
    drawingManager.setDrawingMode(null);
  });

}

google.maps.event.addDomListener(window, 'load', initialize);

html,
body {
  height: 100%;
  margin: 0;
  padding: 0;
}
#map-canvas,
#map_canvas {
  height: 100%;
}
@media print {
  html,
  body {
    height: auto;
  }
  #map-canvas,
  #map_canvas {
    height: 650px;
  }
}
#panel {
  position: absolute;
  top: 5px;
  left: 50%;
  margin-left: -180px;
  z-index: 5;
  background-color: #fff;
  padding: 5px;
  border: 1px solid #999;
}

<script src="https://maps.googleapis.com/maps/api/js?libraries=drawing&key=AIzaSyCkUOdZ5y7hMm0yrcCQoCvLwzdM6M8s5qk"></script>
<div id="map-canvas"></div>