你好，我本地测试这个现象是因为视角和缩放层级的原因导致部份被遮盖，调整视角其实是没有出现遮盖的，测试代码如下，你那边可以尝试调整视角看看效果，如果不是因为视角导致的问题，麻烦你提供一下能复现该问题的数据、坐标、图标和代码，我本地测试重现排查：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=Edge,chrome=1">
<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, minimum-scale=1, user-scalable=no">
<title>地形影像</title>
<link href="../../Build/Cesium/Widgets/widgets.css" rel="stylesheet">
<link href="./css/pretty.css" rel="stylesheet">
<script src="./js/jquery.min.js"></script>
<script src="./js/spectrum.js"></script>
<script type="text/javascript" src="../../Build/Cesium/Cesium.js"></script>
<script src="./js/config.js"></script>
</head>
<body>
<div id="cesiumContainer"></div>
<div id='loadingbar' class="spinner">
<div class="spinner-container container1">
<div class="circle1"></div>
<div class="circle2"></div>
<div class="circle3"></div>
<div class="circle4"></div>
</div>
<div class="spinner-container container2">
<div class="circle1"></div>
<div class="circle2"></div>
<div class="circle3"></div>
<div class="circle4"></div>
</div>
<div class="spinner-container container3">
<div class="circle1"></div>
<div class="circle2"></div>
<div class="circle3"></div>
<div class="circle4"></div>
</div>
</div>
<div id="toolbar" class="param-container tool-bar">
<div class="param-item">
<label>地形显隐:</label>
<label for="terrainVisible">地形显示</label>
<input type="radio" name="isTerrainVisible" value="terrainVisible" id="terrainVisible" checked>
<label for="terrainUnvisible">地形隐藏</label>
<input type="radio" name="isTerrainVisible" value="terrainUnvisible" id="terrainUnvisible">
</div>
<div class="param-item">
<label>颜色透明</label>
<input class="colorPicker" size="8" data-bind="value: color,valueUpdate: 'input'" id="colorPicker">
</div>
<div class="param-item">
<label>颜色透明容限</label>
<input type="range" min="0" max="1" step="0.02" data-bind="value: tolerance,valueUpdate: 'input'" id="tolerance" style="display: block;width:200px;margin: 5px 0">
</div>
</div>
<script>
function onload(Cesium) {
var viewer = new Cesium.Viewer('cesiumContainer',{
//创建地形服务提供者的实例，url为SuperMap iServer发布的TIN地形服务
terrainProvider : new Cesium.CesiumTerrainProvider({
url : URL_CONFIG.SiChuan_TERRAIN,
isSct : true,//地形服务源自SuperMap iServer发布时需设置isSct为true
invisibility:true
}),
});
//添加SuperMap iServer发布的影像服务
var layer = viewer.imageryLayers.addImageryProvider(new Cesium.SuperMapImageryProvider({
url : URL_CONFIG.SiChuan_IMG
}));
let scene = viewer.scene
var promise = scene.open(URL_CONFIG.SCENE_CBD);
let dashedLine = viewer.entities.add({
name: 'BLUE dashed line', // 实体名称
polyline: {
positions: Cesium.Cartesian3.fromDegreesArrayHeights([116.44866497107367, 39.90704136560455, 10,116.44850453420888,39.90731297011973,10, 116.44874704472012, 39.908917501332404, 10]), // 带高度的坐标点
width: 4, // 线条宽度
material: new Cesium.PolylineDashMaterialProperty({
color: Cesium.Color.BLUE // 蓝色虚线
}),
clampToGround:true
}
});
viewer.entities.add({
position: Cesium.Cartesian3.fromDegrees(
Number(116.44850453420888), // 经度
Number(39.90731297011973), // 纬度
Number(10) // 高度
),
billboard: {
image: './images/location4.png', // 标注图标
width: 30, // 图标宽度
height: 40, // 图标高度
},
});
var viewModel = {
color : '#ffffff',
tolerance : 0
};
$("#colorPicker").spectrum({
color: "rgba(255,0,0,1)",
showPalette: true,
showAlpha: true,
localStorageKey: "spectrum.demo",
preferredFormat:'rgb'
});
$("#colorPicker").on('change', function(event) {
var selectedColor = Cesium.Color.fromCssColorString(event.target.value);
layer.transparentBackColor = selectedColor;
});
Cesium.knockout.track(viewModel);
var toolbar = document.getElementById('toolbar');
Cesium.knockout.applyBindings(viewModel, toolbar);
Cesium.knockout.getObservable(viewModel,'tolerance').subscribe(
function(newValue) {
layer.transparentBackColorTolerance = newValue;
}
);
$("#terrainVisible").click(function(){
viewer.terrainProvider.visible = true;
});
$("#terrainUnvisible").click(function(){
viewer.terrainProvider.visible = false;
});
$('#loadingbar').remove();
$('#toolbar').show();
}
if (typeof Cesium !== 'undefined') {
window.startupCalled = true;
onload(Cesium);
}
</script>
<!-- Code injected by live-server -->
<script>
// <![CDATA[ <-- For SVG support
if ('WebSocket' in window) {
(function () {
function refreshCSS() {
var sheets = [].slice.call(document.getElementsByTagName("link"));
var head = document.getElementsByTagName("head")[0];
for (var i = 0; i < sheets.length; ++i) {
var elem = sheets[i];
var parent = elem.parentElement || head;
parent.removeChild(elem);
var rel = elem.rel;
if (elem.href && typeof rel != "string" || rel.length == 0 || rel.toLowerCase() == "stylesheet") {
var url = elem.href.replace(/(&|\?)_cacheOverride=\d+/, '');
elem.href = url + (url.indexOf('?') >= 0 ? '&' : '?') + '_cacheOverride=' + (new Date().valueOf());
}
parent.appendChild(elem);
}
}
var protocol = window.location.protocol === 'http:' ? 'ws://' : 'wss://';
var address = protocol + window.location.host + window.location.pathname + '/ws';
var socket = new WebSocket(address);
socket.onmessage = function (msg) {
if (msg.data == 'reload') window.location.reload();
else if (msg.data == 'refreshcss') refreshCSS();
};
if (sessionStorage && !sessionStorage.getItem('IsThisFirstTime_Log_From_LiveServer')) {
console.log('Live reload enabled.');
sessionStorage.setItem('IsThisFirstTime_Log_From_LiveServer', true);
}
})();
}
else {
console.error('Upgrade your browser. This Browser is NOT supported WebSocket for Live-Reloading.');
}
// ]]>
</script>
</body>
</html>
