根据相机距离显示-源代码示例 运行 重置

                    <!DOCTYPE html>

<html>
<head>
    <meta charset='UTF-8' />
    <meta name='viewport' content='initial-scale=1,maximum-scale=1,user-scalable=no'/>
    <link href='http://bigemap.com:9000/bigemap-gl.js/v1.1.0/Widgets/widgets.css' rel='stylesheet'/>
    <script src='http://bigemap.com:9000/bigemap-gl.js/v1.1.0/bigemap-gl.js'></script>
    <style>
        body { margin: 0; padding: 0; }
        #container { position: absolute; top: 0; bottom: 0; width: 100%; }
        .info{
            position: fixed;
            top:0;
            color: #8a6d3b;
            z-index: 99;
            margin: 0;
            background-color: #fcf8e3;
            border-color: #faebcc;
            left: 0;
            right: 0;
            text-align: center;
        }
    </style>
    <title></title>
</head>
<body>
<div id='container'></div>
<div class="info">
    放大地图 ,可以查看更多的标注
</div>
<script>
    bmgl.Config.HTTP_URL = 'http://bigemap.com:9000';
    var viewer = new bmgl.Viewer('container', {
        requestRenderMode:false,
        mapId: 'bigemap.arcgis-satellite',
    });
    var pinBuilder=new bmgl.PinBuilder();
    for (let i = 0; i <= 200; i++) {
        viewer.entities.add({
            id:(i+1),//设置一个id,方便进行点击判断
            position:bmgl.Cartesian3.fromDegrees(Math.random()*100/1000+104,Math.random()*100/1000+30),
            billboard:{
                //当前与相机的距离在3000以内时,会显示
                distanceDisplayCondition:new bmgl.DistanceDisplayCondition(0,3000),
                image:pinBuilder.fromText((i+1),bmgl.Color.fromRandom({alpha:1}),50),
                heightReference:bmgl.HeightReference.CLAMP_TO_GROUND,
            },
        })
    }
    viewer.entities.add({
        position:bmgl.Cartesian3.fromDegrees(104.05,30.05),
        billboard:{
            image:pinBuilder.fromText(('A'),bmgl.Color.RED,50),
            heightReference:bmgl.HeightReference.CLAMP_TO_GROUND,
        },
    });
    viewer.flyTo(viewer.entities);
</script>
</body>
</html>
                                                                                                                                                                                                        
源码