update：相机缩放案例的添加

src/examples/camera/cameraZoom/cameraZoom-function.js

-export function addFog() {
+let viewer;
+export function addCameraZoom() {
     const script = document.createElement('script');
     script.src = 'https://cesium.com/downloads/cesiumjs/releases/1.99/Build/Cesium/Cesium.js';
     script.onload = () => {
         window.Cesium.Ion.defaultAccessToken = 'eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJqdGkiOiI3Njg4ZWU5Yi1iZDhiLTRhYmUtOTRiYS04YjM5NmUwNjVmMDMiLCJpZCI6MjI3MzQ3LCJpYXQiOjE3MjA1MjA4Mjh9.E5XW4LnwgfVAaBC-znaYr61m4yK0-j2qEQhi9qwFFPE'
 
-        const viewer = new window.Cesium.Viewer('cesiumContainer', {
+        viewer = new window.Cesium.Viewer('cesiumContainer', {
             infoBox: false,
         });
  
-        
     };
     document.head.appendChild(script);
 
@@ -17,3 +17,35 @@ export function addFog() {
     link.href = 'https://cesium.com/downloads/cesiumjs/releases/1.119/Build/Cesium/Widgets/widgets.css';
     document.head.appendChild(link);
 }
+
+// 获取视图中心点
+function  pickCenter() {
+    var ellipsoid = viewer.camera.pickEllipsoid(new Cesium.Cartesian2(
+        viewer.canvas.clientWidth / 2,
+        viewer.canvas.clientHeight / 2));
+    var curPosition = Cesium.Ellipsoid.WGS84.cartesianToCartographic(ellipsoid);
+    var lon = curPosition.longitude * 180 / Math.PI;
+    var lat = curPosition.latitude * 180 / Math.PI;
+    return {
+        lon: lon,
+        lat: lat
+    };
+}
+export function zoomByBound(flag){
+    const center = pickCenter()
+    var height = viewer.camera.positionCartographic.height;
+    const camera = viewer.camera;
+    var boundingSph = new Cesium.BoundingSphere(Cesium.Cartesian3.fromDegrees(center.lon, center.lat, 1000), height);
+    var moveRate = 0;
+    if(flag){
+        moveRate = 0.5
+    }
+    else{
+        moveRate = 1.5
+    }
+    var zoomParams = {
+        duration: 0.8,
+        offset: new Cesium.HeadingPitchRange(camera.heading, camera.pitch, height * moveRate)
+    }
+    camera.flyToBoundingSphere(boundingSph,zoomParams);
+}

src/examples/camera/cameraZoom/cameraZoom.vue

 <template>
     <div id="cesiumContainer" class="cesium-container"></div>
+    <div class="btn-class">
+        <button @click="zoomByBound(1)">放大相机视角</button>
+        <button @click="zoomByBound(0)">缩小相机视角</button>
+    </div>
 </template>
 <script setup>
 import { onMounted } from 'vue';
-import { addCameraZoom } from './function';
+import { addCameraZoom, zoomByBound } from './function';
 onMounted(() => {
     addCameraZoom()
 });
@@ -11,7 +15,12 @@ onMounted(() => {
 
 <style>
 .cesium-container {
-width: 100%;
-height: 100vh;
+    width: 100%;
+    height: 100vh;
+}
+.btn-class {
+    position: absolute;
+    top: 10px;
+    left: 10px;
 }
 </style>
\ No newline at end of file

src/views/ElementMap.js

@@ -150,7 +150,7 @@ export const elementCameraMap = {
     },
     相机缩放: {
         title: '相机缩放',
-        pngUrl: '/src/assets/Mapx.png'
+        pngUrl: '/src/assets/CameraZoom.png'
     }
 }