【解决办法】
function onload(Cesium) {
//初始化viewer部件
var viewer = new Cesium.Viewer('cesiumContainer');
viewer.scene.lightSource.ambientLightColor = new Cesium.Color(0.65, 0.65, 0.65, 1);
var layer = viewer.imageryLayers.addImageryProvider(new Cesium.SuperMapImageryProvider({
url : "
https://iserver.supermap.io/iserver/services/map-jingjin/rest/maps/京津地区地图"
}));
//获取背景颜色
layer.transparentBackColor = Cesium.Color.WHITE;
//设置背景颜色透明度
layer.transparentBackColorTolerance = 0.5;
}
if (typeof Cesium !== 'undefined') {
window.startupCalled = true;
onload(Cesium);
}
