Google Photorealistic 3D Tiles with Building Insert

<!--
  示例：实景城市中插入建筑
  说明：实景城市里插入一栋高亮的新楼，与周边体块区分开
  核心逻辑：程序化城市体块 + 插入体块 → 描边与高亮材质 → 对比
  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>实景城市中插入建筑</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}
</style>
</head>
<body>
<div id="c"></div>
<div class="tip">中间浅色描边的楼是插入的，周围是既有城市体块。</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;

  function facade(tint) {
    var c = document.createElement('canvas');
    c.width = 128; c.height = 128;
    var ctx = c.getContext('2d');
    ctx.fillStyle = tint; ctx.fillRect(0, 0, 128, 128);
    ctx.fillStyle = 'rgba(30,36,44,0.7)';
    for (var y = 10; y < 128; y += 22) {
      for (var x = 8; x < 128; x += 26) { ctx.fillRect(x, y, 16, 12); }
    }
    return c.toDataURL('image/png');
  }

  var existing = new Cesium.ImageMaterialProperty({
    image: facade('#8c9198'), repeat: new Cesium.Cartesian2(2, 2)
  });

  for (var i = 0; i < 12; i++) {
    for (var j = 0; j < 9; j++) {
      if (i >= 5 && i <= 7 && j >= 3 && j <= 4) continue;   /* 留出插入位置 */
      var h = 26 + ((i * 9 + j * 5) % 7) * 11;
      viewer.entities.add({
        position: Cesium.Cartesian3.fromDegrees(
          116.3852 + i * 0.00078, 39.9016 + j * 0.00074, h / 2
        ),
        box: {
          dimensions: new Cesium.Cartesian3(24, 22, h),
          material: existing
        }
      });
    }
  }

  /* 插入的新楼：更高、更亮、带描边 */
  viewer.entities.add({
    position: Cesium.Cartesian3.fromDegrees(116.3897, 39.9044, 58),
    box: {
      dimensions: new Cesium.Cartesian3(40, 34, 116),
      material: Cesium.Color.fromCssColorString('#cfe2f5').withAlpha(0.92),
      outline: true,
      outlineColor: Cesium.Color.fromCssColorString('#ffb13d')
    }
  });
  viewer.camera.flyTo({
    destination: Cesium.Cartesian3.fromDegrees(116.3942, 39.8990, 380),
    orientation: { heading: Cesium.Math.toRadians(26), pitch: Cesium.Math.toRadians(-22), roll: 0 },
    duration: 0
  });
})();
</script>
</body>
</html>