Aec Architectural Design

<!--
  示例：分层体量与楼层信息
  说明：六层建筑逐层分色，点击楼层描边变黄并显示面积与标高
  核心逻辑：每层一个实体并挂属性 → LEFT_CLICK 拾取 → 重置高亮 → 显示楼层信息
  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>分层体量与楼层信息</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;bottom: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:220px}
  .panel b{color:#e6e8ec}
</style>
</head>
<body>
<div id="c"></div>
<div class="tip">点某一层，该层描边变黄，右下角显示楼层号、面积与标高区间。</div>
<div id="panel" class="panel">点击任意楼层查看信息</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 floorCount = 6, floorH = 4.2;
  var floors = [];
  var palette = ['#4d7cff', '#5b8def', '#3ecf8e', '#ffb44d', '#a78bfa', '#ff8f6b'];

  for (var i = 0; i < floorCount; i++) {
    var h = 30 + (i % 2) * 8;
    var e = viewer.entities.add({
      position: Cesium.Cartesian3.fromDegrees(116.391, 39.907, i * floorH + floorH / 2),
      box: {
        dimensions: new Cesium.Cartesian3(h, 24, floorH * 0.9),
        material: Cesium.Color.fromCssColorString(palette[i]).withAlpha(0.92),
        outline: true,
        outlineColor: Cesium.Color.WHITE.withAlpha(0.3)
      },
      properties: {
        floor: 'F' + (i + 1),
        area: (h * 24).toFixed(0) + ' 平方米',
        z: (i * floorH).toFixed(1) + ' – ' + ((i + 1) * floorH).toFixed(1) + ' 米'
      }
    });
    floors.push(e);
  }

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

  handler.setInputAction(function (click) {
    var picked = scene.pick(click.position);
    floors.forEach(function (f) {
      f.box.outlineColor = Cesium.Color.WHITE.withAlpha(0.3);
    });
    if (!picked || !picked.id || !picked.id.properties) {
      panel.textContent = '点击任意楼层查看信息';
      return;
    }
    picked.id.box.outlineColor = Cesium.Color.fromCssColorString('#ffd166');
    var p = picked.id.properties;
    panel.innerHTML = '<b>' + p.floor.getValue() + '</b><br>' +
      '面积：' + p.area.getValue() + '<br>' +
      '标高：' + p.z.getValue();
  }, Cesium.ScreenSpaceEventType.LEFT_CLICK);

  viewer.camera.flyTo({
    destination: Cesium.Cartesian3.fromDegrees(116.3858, 39.9012, 150),
    orientation: { heading: Cesium.Math.toRadians(32), pitch: Cesium.Math.toRadians(-8), roll: 0 },
    duration: 0
  });
})();
</script>
</body>
</html>