版本：9.3.0
创建三维标签

基于坐标点位显示三维空间中的标注图层。
<!DOCTYPE html>
<html>

<head>
    <meta charset="utf-8"/>
    <title>创建三维标签</title>
    <meta name="viewport" content="initial-scale=1,maximum-scale=1,user-scalable=no"/>
    <style>
        body {
            margin: 0;
            padding: 0;
            overflow: hidden;
        }

        #map {
            position: absolute;
            top: 0;
            bottom: 0;
            width: 100%;
        }

        .btn-group {
            position: absolute;
            top: 20px;
            left: 20px;
            color: white;
        }

        .pointTag1 {
            font-weight: 600;
            background-color: #66b4f5;
            width: 34px;
            height: 54px;
        }

        .pointTag2 {
            width: 34px;
            height: 54px;
            background-repeat: no-repeat;
            background-size: 100% 100%;
            background-image: url("../example_data/images/pin_security.png");
        }
    </style>
    <script src="https://delivery.mapmost.com/cdn/sdk/webgl/v9.3.0/mapmost-webgl-min.js"></script>
</head>

<body>
<div id="map"></div>
<div class="btn-group">
    <button onclick="addTag()">加载</button>
    <button onclick="removeTag()">移除</button>
</div>
<script>
    let map = new mapmost.Map({
        container: 'map',  
        style: "<your style url>", 
        center: [120.74603465203592, 31.30605899929158], 
        zoom: 19, 
        pitch: 59.48725112156901, 
        bearing: 0, 
        userId: '***', // 授权码
    });

    let modelLayer;
    let markers;
     map.on('load', function () {

        let options = {
            id: 'model_id',
            type: 'model',
            funcRender: function (gl, matrix) {
                if (modelLayer) {
                    modelLayer.renderMarker(gl, matrix)
                }
            },
            callback: function (group, layer) {
                let group_points = layer.addPoints({
                    type: "sphere",
                    size: 1,
                    color: 0xffffff,
                    opacity: 0.8,
                    data: [{
                        name: 1,
                        coordinate: [120.74603465203592, 31.30605899929158, 20.0]
                    }, {
                        name: 2,
                        coordinate: [120.74609465203592, 31.30605899929158, 20.0]
                    }, {
                        name: 3,
                        coordinate: [120.74615465203592, 31.30605899929158, 20.0]
                    }]
                })
                modelLayer = layer;
            }
        };
        map.addLayer(options);
    })

    function addTag() {
        if (modelLayer) {
            let dom0 = document.createElement('div');
            dom0.className = "pointTag2";
            let dom = document.createElement('div');
            dom.className = "pointTag1";
            dom.appendChild(dom0.cloneNode(true))
            markers = modelLayer.addMarker({
                id: "marker001",
                data: [{
                    name: "a",
                    element: dom0,
                    position: [120.74603465203592, 31.30605899929158, 20.0]
                }, {
                    name: "b",
                    element: dom,
                    position: [120.74609465203592, 31.30605899929158, 20.0]
                }, {
                    name: "c",
                    element: dom,
                    position: [120.74615465203592, 31.30605899929158, 20.0]
                }]
            })
        }
    }

    function removeTag() {
        if (modelLayer) {
            markers.remove()
        }
    }

    function updateTag() {
        if (modelLayer) {
            markers.update([{
                name: "a",
                position: [120.74583465203592, 31.30605899929158, 20.0]
            }])
        }
    }

</script>
</body>

</html>