高德地图 JS API示例-覆盖物- › 点标记-›标注和标注图层-海量点

<!doctype html>
<html>
<head>
    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="initial-scale=1.0, user-scalable=no, width=device-width">
    <title>标注和标注图层-海量点</title>
    <link rel="stylesheet" href="https://a.amap.com/jsapi_demos/static/demo-center/css/demo-center.css"/>
    <style>
        html, body, #container {
            height: 100%;
            width: 100%;
            margin: 0;
        }
        .amap-info-window{
            width: 150px;
            background: #fff;
            border-radius: 3px;
            padding: 3px 7px;
            box-shadow: 0 2px 6px 0 rgba(114, 124, 245, .5);
            position: relative;
        }
        .amap-info-sharp{
            position: absolute;
            top: 21px;
            bottom: 0;
            left: 50%;
            margin-left: -8px;
            border-left: 8px solid transparent;
            border-right: 8px solid transparent;
            border-top: 8px solid #fff;
        }
    </style>
</head>
<body>
<div id="container"></div>

<div class="info">
    <h4>海量点展示</h4>
    <p>模式：<span id="mapView">3D</span></p>
    <p>海量点数量：<span id="massNumber">30000</span></p>
 </div>
<script type="text/javascript"
        src="https://webapi.amap.com/maps?v=1.4.15&key=您申请的key值"></script>
<script type="text/javascript" src="https://a.amap.com/jsapi_demos/static/demo-center/data/mock_position.js"></script>
<script type="text/javascript">
    var map = new AMap.Map('container', {
        zoom: 9,
        showLabel: false,
        expandZoomRange: true,
        center: [116.12, 40.11],
        viewMode: '3D',
        pitch: 60,
        mapStyle: 'amap://styles/whitesmoke',
    });

    map.on('complete', function () {
        var viewData = {'2D': 3E3, '3D': 3E4};
        var curViewMode = map.getViewMode_();

        // 创建 AMap.LabelsLayer 图层
        var layer = new AMap.LabelsLayer({
            zooms: [3, 20],
            zIndex: 111,
            // 关闭标注避让，默认为开启，v1.4.15 新增属性
            animation: false,
            // 关闭标注淡入动画，默认为开启，v1.4.15 新增属性
            collision: false
        });

        // 将图层添加到地图
        map.add(layer);

        var markers = [];
        var positions = Positions.slice(0, viewData[curViewMode]);

        var icon = {
            type: 'image',
            image: 'https://webapi.amap.com/theme/v1.3/markers/n/mark_b.png',
            size: [6, 9],
            anchor: 'bottom-center',
            angel: 0,
            retina: true
        };

        for (var i = 0; i < positions.length; i++) {
            var curPosition = positions[i];
            var curData = {
                position: curPosition,
                icon
            };

            var labelMarker = new AMap.LabelMarker(curData);
            // 事件
            labelMarker.on('mouseover', function(e){
                var position = e.data.data && e.data.data.position;
    
                if(position){
                    normalMarker.setContent(
                        '<div class="amap-info-window">'
                            + position +
                            '<div class="amap-info-sharp"></div>' +
                        '</div>');
                    normalMarker.setPosition(position);
                    map.add(normalMarker); 
                }
            });

            labelMarker.on('mouseout', function(){
                map.remove(normalMarker);
            });

            markers.push(labelMarker);
        }
        
        // 一次性将海量点添加到图层
        layer.add(markers);
        
        // 普通点
        var normalMarker = new AMap.Marker({
            offset: new AMap.Pixel(-75, -40),
        });
        
        var mapViewElement = document.getElementById('mapView');
        var massNumberElement = document.getElementById('massNumber');
        mapViewElement.innerHTML = curViewMode;
        massNumberElement.innerHTML = viewData[curViewMode];
    });
</script>
</body>
</html>
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