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版本：9.1.0

获取模型几何中心坐标

获取模型几何中心坐标。

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<!DOCTYPE html>
<html>

<head>
    <meta charset="utf-8"/>
    <title>获取模型几何中心坐标</title>
    <meta name="viewport" content="initial-scale=1,maximum-scale=1,user-scalable=no"/>
    <style>
        body {
            margin: 0;
            padding: 0;
        }

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

        .btn-group {
            position: absolute;
            top: 20px;
            left: 20px;
            color: #0000000;
        }
    </style>
    <script src="https://delivery.mapmost.com/cdn/sdk/webgl/v9.1.0/mapmost-webgl-min.js"></script>
</head>

<body>
<div id="map"></div>
<div class="btn-group">
    <button onclick="getCenter(0)">上盖中心坐标</button>
    <button onclick="getCenter(1)">底座中心坐标</button>
    <button onclick="getCenter(2)">整体中心坐标</button>
    <div id="coor"></div>
</div>
<script>
    let map = new mapmost.Map({
        container: 'map',  
        style: "<your style url>", 
        center: [120.74603465203592, 31.30505899929158], 
        zoom: 16.810035105070947, 
        pitch: 60, 
        bearing: 0,
        userId: '***', // 授权码 
        env3D: {
            exposure: 1,
            envMap: '../example_data/hdr/WhiteBG_Ref_1K.hdr'
        }
    });

 map.on('load', function () {

        let models_obj = ["../example_data/Olympic.glb", "../example_data/OlympicRoof.glb"].map(item => ({
            type: 'glb',
            url: item
        }));

        let options = {
            id: 'model_id',
            type: 'model',
            models: models_obj,
            center: [120.74603465203592, 31.30605899929158, 6.0],
            callback: function (group, layer) {
                Group = group;
                modelLayer = layer;
            }
        };
        map.addLayer(options);
    })

    function getCenter(type) {
        let scene = modelLayer.tb.scene;
        let group;
        if (type === 0) {
            group = scene.children[0].children[0].children[0].children[1]
        } else if (type === 1) {
            group = scene.children[0].children[0].children[0].children[0]
        } else {
            group = scene.children[0].children[0].children[0]
        }
        let coor = modelLayer.getModelCenter(group);
        console.log("坐标： " + coor)

        modelLayer.addPoints({
            type: "cube",
            size: 4,
            color: (type === 0) ? 0xff0000 : ((type === 1) ? 0x00ff00 : 0x0000ff),
            data: [{
                coordinate: coor
            }]
        });

        document.getElementById("coor").innerText = ((type === 0) ? "上盖" : ((type === 1) ? "底座" : "整体")) + "中心坐标： " + coor
    }

</script>
</body>

</html>