3D Tiles Inspector

<!--
  示例：悬停高亮与检查面板
  说明：20 栋建筑，鼠标悬停时描边高亮并在右侧面板显示属性
  核心逻辑：MOUSE_MOVE 拾取 → 恢复上一个高亮 → 设置当前描边色 → 写入面板
  依赖：CesiumJS 1.121 · jsDelivr CDN
-->
<!DOCTYPE html>
<html lang="zh-CN">
<head>
<meta name="robots" content="noindex,follow">
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>悬停高亮与检查面板</title>
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/cesium@1.121.0/Build/Cesium/Widgets/widgets.css">
<style>
  html,body{height:100%;margin:0}
  body{background:#0e1116;color:#e6e8ec;overflow:hidden;
       font:13px/1.6 -apple-system,"Segoe UI","PingFang SC",sans-serif}
  #c{height:100%}
  .tip{position:absolute;left:12px;top:12px;z-index:5;
       background:rgba(23,28,35,.9);border:1px solid #2a313b;border-radius:6px;
       padding:8px 12px;font-size:12px;color:#a2a9b6;max-width:320px;line-height:1.6}
  .cesium-viewer-bottom .cesium-widget-credits,.cesium-viewer-animationContainer,
  .cesium-viewer-timelineContainer{display:none!important}
  .panel{position:absolute;right:12px;top:12px;z-index:6;background:rgba(23,28,35,.92);
       border:1px solid #2a313b;border-radius:6px;padding:8px 12px;font-size:12px;
       color:#a2a9b6;line-height:1.8;max-width:230px;transition:opacity .2s}
  .panel b{color:#e6e8ec}
</style>
</head>
<body>
<div id="c"></div>
<div class="tip">鼠标扫过建筑，描边变蓝，右侧显示该建筑的编号与尺寸。移开后恢复原样。</div>
<div id="panel" class="panel">把鼠标移到建筑上查看信息</div>
<script src="https://cdn.jsdelivr.net/npm/cesium@1.121.0/Build/Cesium/Cesium.js"></script>
<script>
(function () {
  'use strict';

  var viewer = new Cesium.Viewer('c', {
    baseLayer: false,
    baseLayerPicker: false, geocoder: false, homeButton: false,
    sceneModePicker: false, navigationHelpButton: false,
    animation: false, timeline: false, fullscreenButton: false,
    infoBox: false, selectionIndicator: false
  });

  var scene = viewer.scene;
  scene.globe.baseColor = Cesium.Color.fromCssColorString('#1c2733');
  scene.backgroundColor = Cesium.Color.fromCssColorString('#0e1116');
  scene.skyBox.show = false;
  scene.sun.show = false;
  scene.moon.show = false;
  if (scene.skyAtmosphere) scene.skyAtmosphere.show = false;

  var seed = 61;
  function rnd() { seed = (seed * 9301 + 49297) % 233280; return seed / 233280; }
  var colors = ['#4d7cff', '#3ecf8e', '#ffb44d', '#a78bfa', '#ff5c5c'];

  for (var i = 0; i < 20; i++) {
    var lon = 116.3864 + (i % 5) * 0.0022;
    var lat = 39.9034 + Math.floor(i / 5) * 0.0021;
    var h = 16 + rnd() * 44;
    viewer.entities.add({
      position: Cesium.Cartesian3.fromDegrees(lon, lat, h / 2),
      box: {
        dimensions: new Cesium.Cartesian3(26, 24, h),
        material: Cesium.Color.fromCssColorString(colors[i % colors.length]).withAlpha(0.9),
        outline: true,
        outlineColor: Cesium.Color.WHITE.withAlpha(0.25)
      },
      properties: {
        id: 'TILE-' + (1001 + i),
        lon: lon.toFixed(5),
        lat: lat.toFixed(5),
        h: h.toFixed(1) + ' 米',
        w: '26 × 24 米'
      }
    });
  }

  var panel = document.getElementById('panel');
  var handler = new Cesium.ScreenSpaceEventHandler(scene.canvas);
  var last = null;

  handler.setInputAction(function (move) {
    var picked = scene.pick(move.endPosition);
    if (!picked || !picked.id || !picked.id.properties) {
      if (last) { last.box.outlineColor = Cesium.Color.WHITE.withAlpha(0.25); last = null; }
      panel.style.opacity = 0.35;
      panel.innerHTML = '把鼠标移到建筑上查看信息';
      return;
    }
    if (last !== picked.id) {
      if (last) last.box.outlineColor = Cesium.Color.WHITE.withAlpha(0.25);
      picked.id.box.outlineColor = Cesium.Color.fromCssColorString('#4d9bff');
      last = picked.id;
    }
    var p = picked.id.properties;
    panel.style.opacity = 1;
    panel.innerHTML =
      '<b>' + p.id.getValue() + '</b><br>' +
      '经纬度：' + p.lon.getValue() + ', ' + p.lat.getValue() + '<br>' +
      '高度：' + p.h.getValue() + '<br>' +
      '底面：' + p.w.getValue();
  }, Cesium.ScreenSpaceEventType.MOUSE_MOVE);

  viewer.camera.flyTo({
    destination: Cesium.Cartesian3.fromDegrees(116.3922, 39.8992, 720),
    orientation: { heading: Cesium.Math.toRadians(8), pitch: Cesium.Math.toRadians(-28), roll: 0 },
    duration: 0
  });
})();
</script>
</body>
</html>