google-maps - 当两个标记彼此靠近时，标记标签重叠。如何为谷歌地图标记提供背景颜色？

Question

我正在使用谷歌地图版本 3 api 和谷歌地图标记。当标记彼此靠近时，标签重叠并且看起来很糟糕。我试图为标记标签提供背景颜色，但谷歌地图标记标签似乎没有背景颜色属性。我尝试使用 MarkerWithLabel api，但与谷歌地图的默认标记标签相比，当我有 1000 个标记时，渲染速度较慢。我已经包括了 js fiddle 。谁能帮我解决这个问题？

https://jsfiddle.net/dcvc99qz/12/

function initMap() {
    var pointA = new google.maps.LatLng(51.2750, 1.0870),
        pointB = new google.maps.LatLng(51.2750, 0.8140),
        myOptions = {
            zoom: 5,
            center: pointA,
            mapTypeId: google.maps.MapTypeId.ROADMAP
        },
        map = new google.maps.Map(document.getElementById('map-canvas'), myOptions),
        markerA = new google.maps.Marker({
            position: pointA,
            title: "point A",
            label: "AA",
            map: map
        }),
        markerB = new google.maps.Marker({
            position: pointB,
            title: "point B",
            label: "BB",
            map: map
        });

}

initMap();

Answer 1

标记只是图像，你不能只改变它的背景颜色，你必须定义一个新的图标。首先，准备具有正确颜色的新透明图像。然后创建新的图标定义。

var icons = {
  green: {
      // link to an image, use https if original site also uses https
      url: 'https://i.imgur.com/5Yd25Ga.png',

      // set size of an image
      size: new google.maps.Size(22, 40),

      // if an image is a sprite, set its relative position from 0, 0
      origin: new google.maps.Point(0, 0),

      // part of an image pointing on location on the map
      anchor: new google.maps.Point(11, 40),

      // position of text label on icon
      labelOrigin: new google.maps.Point(11, 10)
      },
  red: {
      // ...
      }
};

icon properties 的文档

添加新标记时，将其图标设置为定义的图标之一。

markerB = new google.maps.Marker({
    position: pointB,
    title: "point B",
    label: "BB",
    icon: icons.green,
    map: map
});

当点彼此靠近时，您会注意到文本标签重叠。要修复它，添加增加 zIndex到每个标记。

markerA = new google.maps.Marker({
    position: pointA,
    title: "point A",
    label: "AA",
    zIndex: 1000,
    icon: icons.red,
    map: map
});

markerB = new google.maps.Marker({
  position: pointB,
  title: "point B",
  label: "BB",
  zIndex: 1001,
  icon: icons.green,
  map: map
});

完整的工作示例: jsfiddle.net/yLhbxnz6/