{"id":72549,"date":"2026-02-05T23:05:51","date_gmt":"2026-02-05T15:05:51","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/72549.html"},"modified":"2026-02-05T23:05:51","modified_gmt":"2026-02-05T15:05:51","slug":"cesium%e5%bc%b9%e7%aa%97%e8%bf%9b%e5%8c%96%e8%ae%ba%ef%bc%9a%e4%bb%8e%e5%9f%ba%e7%a1%80%e8%b7%9f%e9%9a%8f%e5%88%b0%e6%99%ba%e8%83%bd%e9%81%bf%e9%9a%9c%e7%9a%84%e4%ba%a4%e4%ba%92%e8%ae%be%e8%ae%a1","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/72549.html","title":{"rendered":"Cesium\u5f39\u7a97\u8fdb\u5316\u8bba\uff1a\u4ece\u57fa\u7840\u8ddf\u968f\u5230\u667a\u80fd\u907f\u969c\u7684\u4ea4\u4e92\u8bbe\u8ba1\u9769\u547d"},"content":{"rendered":"

Cesium\u5f39\u7a97\u8fdb\u5316\u8bba：\u4ece\u57fa\u7840\u8ddf\u968f\u5230\u667a\u80fd\u907f\u969c\u7684\u4ea4\u4e92\u8bbe\u8ba1\u9769\u547d<\/h2>\n

\u4e09\u7ef4\u5730\u7406\u4fe1\u606f\u7cfb\u7edf(GIS)\u7684\u4ea4\u4e92\u8bbe\u8ba1\u6b63\u7ecf\u5386\u4e00\u573a\u9759\u9ed8\u9769\u547d\u3002\u5f53\u822a\u7a7a\u7ba1\u5236\u5458\u9762\u5bf9\u5c4f\u5e55\u4e0a\u5bc6\u96c6\u7684\u822a\u73ed\u6807\u8bb0，\u5f53\u57ce\u5e02\u89c4\u5212\u5e08\u5ba1\u89c6\u6570\u5b57\u5b6a\u751f\u57ce\u5e02\u4e2d\u7684\u5efa\u7b51\u96c6\u7fa4，\u4f20\u7edf\u5f39\u7a97\u4ea4\u4e92\u7684\u5c40\u9650\u6027\u6108\u53d1\u660e\u663e\u2014\u2014\u906e\u6321\u5173\u952e\u89c6\u89d2\u3001\u4fe1\u606f\u5806\u53e0\u6df7\u4e71\u3001\u89c6\u89d2\u5207\u6362\u65f6\u7684\u89c6\u89c9\u5e72\u6270\u7b49\u95ee\u9898，\u90fd\u5728\u547c\u5524\u66f4\u667a\u80fd\u7684\u89e3\u51b3\u65b9\u6848\u3002<\/p>\n

1. \u57fa\u7840\u8ddf\u968f\u6280\u672f\u7684\u6838\u5fc3\u539f\u7406\u4e0e\u5c40\u9650<\/h3>\n

Cesium\u7684DOM\u5f39\u7a97\u57fa\u7840\u5b9e\u73b0\u4f9d\u8d56\u4e8e\u4e09\u7ef4\u5750\u6807\u5230\u5c4f\u5e55\u5750\u6807\u7684\u5b9e\u65f6\u8f6c\u6362\u3002\u6838\u5fc3\u6d41\u7a0b\u770b\u4f3c\u7b80\u5355：<\/p>\n

function updatePopupPosition(entityId) {
\n const position = viewer.entities.getById(entityId).position.getValue();
\n const screenPos = Cesium.SceneTransforms.wgs84ToWindowCoordinates(
\n viewer.scene,
\n position
\n );
\n document.getElementById(entityId).style.transform =
\n `translate(${screenPos.x}px, ${screenPos.y}px)`;
\n}<\/p>\n

\u4f46\u8fd9\u79cd\u57fa\u7840\u65b9\u6848\u5b58\u5728\u4e09\u4e2a\u81f4\u547d\u7f3a\u9677：<\/p>\n

  • \u89c6\u89c9\u906e\u6321\u95ee\u9898：\u5f53\u591a\u4e2a\u6a21\u578b\u5bc6\u96c6\u5206\u5e03\u65f6，\u5f39\u7a97\u76f8\u4e92\u91cd\u53e0<\/li>\n
  • \u89c6\u89d2\u76f2\u533a：\u5730\u7403\u80cc\u9762\u6216\u906e\u6321\u7269\u540e\u7684\u5f39\u7a97\u4ecd\u53ef\u80fd\u663e\u793a<\/li>\n
  • \u6027\u80fd\u6d88\u8017：\u6bcf\u5e27\u8ba1\u7b97\u6240\u6709\u5f39\u7a97\u4f4d\u7f6e\u9020\u6210\u4e0d\u5fc5\u8981\u7684\u6027\u80fd\u5f00\u9500<\/li>\n

    \u5728\u822a\u7a7a\u7ba1\u5236\u7cfb\u7edf\u4e2d，\u8fd9\u4e9b\u7f3a\u9677\u53ef\u80fd\u5bfc\u81f4\u4e25\u91cd\u540e\u679c\u3002\u8bd5\u60f3\u4e24\u67b6\u822a\u7ebf\u4ea4\u53c9\u7684\u98de\u673a\u5f39\u7a97\u76f8\u4e92\u906e\u76d6，\u6216\u5730\u5f62\u906e\u6321\u4e0b\u7684\u98de\u884c\u5668\u4fe1\u606f\u65e0\u6cd5\u53ca\u65f6\u83b7\u53d6，\u90fd\u662f\u4e0d\u53ef\u63a5\u53d7\u7684\u8bbe\u8ba1\u5931\u8bef\u3002<\/p>\n

    2. \u667a\u80fd\u907f\u969c\u7cfb\u7edf\u7684\u5173\u952e\u6280\u672f\u5b9e\u73b0<\/h3>\n

    2.1 \u89c6\u9525\u4f53\u5254\u9664\u4e0e\u53ef\u89c1\u6027\u68c0\u6d4b<\/h4>\n

    \u901a\u8fc7\u6269\u5c55\u57fa\u7840\u7684\u5750\u6807\u8f6c\u6362\u903b\u8f91，\u6211\u4eec\u53ef\u4ee5\u5b9e\u73b0\u66f4\u667a\u80fd\u7684\u663e\u793a\u63a7\u5236：<\/p>\n

    function smartPopupUpdate(entityId) {
    \n const entity = viewer.entities.getById(entityId);
    \n const position = entity.position.getValue();<\/p>\n

    \/\/ \u89c6\u9525\u4f53\u68c0\u6d4b
    \n if (!viewer.camera.viewRectangle.contains(position)) {
    \n hidePopup(entityId);
    \n return;
    \n }<\/p>\n

    \/\/ \u89c6\u7ebf\u906e\u6321\u68c0\u6d4b
    \n const ray = new Cesium.Ray(viewer.camera.position,
    \n Cesium.Cartesian3.subtract(position, viewer.camera.position, new Cesium.Cartesian3()));
    \n const hit = viewer.scene.globe.pick(ray, viewer.scene);<\/p>\n

    if (hit && Cesium.Cartesian3.distance(hit, position) > 10) {
    \n hidePopup(entityId);
    \n return;
    \n }<\/p>\n

    \/\/ \u667a\u80fd\u5e03\u5c40
    \n updatePopupLayout(entityId, position);
    \n}<\/p>\n

    2.2 \u52a8\u6001\u5e03\u5c40\u7b97\u6cd5<\/h4>\n

    \u5f53\u68c0\u6d4b\u5230\u5f39\u7a97\u91cd\u53e0\u65f6，\u53ef\u91c7\u7528\u529b\u5bfc\u5411\u7b97\u6cd5\u91cd\u65b0\u5e03\u5c40：<\/p>\n

    function resolveOverlaps(popups) {
    \n const MARGIN = 15;
    \n let moved = true;<\/p>\n

    while (moved) {
    \n moved = false;
    \n for (let i = 0; i < popups.length; i++) {
    \n for (let j = i + 1; j < popups.length; j++) {
    \n const dx = popups[i].x – popups[j].x;
    \n const dy = popups[i].y – popups[j].y;
    \n const distance = Math.sqrt(dx * dx + dy * dy);
    \n const minDist = popups[i].radius + popups[j].radius + MARGIN;<\/p>\n

    if (distance < minDist) {
    \n const angle = Math.atan2(dy, dx);
    \n const moveX = Math.cos(angle) * (minDist – distance) * 0.5;
    \n const moveY = Math.sin(angle) * (minDist – distance) * 0.5;<\/p>\n

    popups[i].x += moveX;
    \n popups[i].y += moveY;
    \n popups[j].x -= moveX;
    \n popups[j].y -= moveY;
    \n moved = true;
    \n }
    \n }
    \n }
    \n }
    \n}<\/p>\n

    3. \u591a\u6a21\u6001\u4ea4\u4e92\u8bbe\u8ba1\u7b56\u7565<\/h3>\n

    3.1 \u89c6\u89d2\u81ea\u9002\u5e94\u663e\u793a\u6a21\u5f0f<\/h4>\n

    \u6839\u636e\u89c6\u89d2\u9ad8\u5ea6\u52a8\u6001\u8c03\u6574\u5f39\u7a97\u4fe1\u606f\u5bc6\u5ea6：<\/p>\n\n\u89c6\u89d2\u9ad8\u5ea6\u663e\u793a\u6a21\u5f0f\u4fe1\u606f\u5bc6\u5ea6\u4ea4\u4e92\u65b9\u5f0f<\/tr>\n\n\n\n\n
    < 5km<\/td>\n\u8be6\u7ec6\u6a21\u5f0f<\/td>\n\u9ad8<\/td>\n\u5b8c\u6574\u4fe1\u606f+\u64cd\u4f5c\u6309\u94ae<\/td>\n<\/tr>\n
    5-20km<\/td>\n\u7cbe\u7b80\u6a21\u5f0f<\/td>\n\u4e2d<\/td>\n\u5173\u952e\u5b57\u6bb5+\u60ac\u505c\u5c55\u5f00<\/td>\n<\/tr>\n
    > 20km<\/td>\n\u6807\u8bb0\u6a21\u5f0f<\/td>\n\u4f4e<\/td>\n\u4ec5\u56fe\u6807+\u70b9\u51fb\u89e6\u53d1<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

    3.2 \u5c42\u7ea7\u7ba1\u7406\u7cfb\u7edf<\/h4>\n

    \u5b9e\u73b0\u5f39\u7a97\u7684\u667a\u80fd\u4f18\u5148\u7ea7\u7ba1\u7406：<\/p>\n

  • \u4e1a\u52a1\u4f18\u5148\u7ea7：\u7d27\u6025\u544a\u8b66 > \u5e38\u89c4\u72b6\u6001 > \u8f85\u52a9\u4fe1\u606f<\/li>\n
  • \u7a7a\u95f4\u4f18\u5148\u7ea7：\u89c6\u53e3\u4e2d\u5fc3 > \u8fb9\u7f18\u533a\u57df<\/li>\n
  • \u65f6\u95f4\u4f18\u5148\u7ea7：\u65b0\u89e6\u53d1 > \u6301\u7eed\u663e\u793a<\/li>\n

    class PopupManager {
    \n constructor() {
    \n this.popups = new Map();
    \n this.zIndex = 1000;
    \n }<\/p>\n

    addPopup(entityId, priority = 0) {
    \n this.popups.set(entityId, {
    \n element: document.getElementById(entityId),
    \n priority,
    \n lastActive: Date.now()
    \n });
    \n this.updateZIndex();
    \n }<\/p>\n

    updateZIndex() {
    \n const sorted = […this.popups.values()].sort((a, b) =>
    \n b.priority – a.priority || b.lastActive – a.lastActive);<\/p>\n

    sorted.forEach((popup, index) => {
    \n popup.element.style.zIndex = this.zIndex + index;
    \n });
    \n }
    \n}<\/p>\n

    4. \u6027\u80fd\u4f18\u5316\u5b9e\u6218\u65b9\u6848<\/h3>\n

    4.1 \u7a7a\u95f4\u7d22\u5f15\u52a0\u901f<\/h4>\n

    \u4f7f\u7528\u56db\u53c9\u6811\u7a7a\u95f4\u7d22\u5f15\u4f18\u5316\u78b0\u649e\u68c0\u6d4b：<\/p>\n

    class PopupQuadTree {
    \n constructor(bounds, capacity = 4) {
    \n this.bounds = bounds;
    \n this.capacity = capacity;
    \n this.popups = [];
    \n this.divided = false;
    \n }<\/p>\n

    insert(popup) {
    \n if (!this.bounds.contains(popup.x, popup.y)) return false;<\/p>\n

    if (this.popups.length < this.capacity && !this.divided) {
    \n this.popups.push(popup);
    \n return true;
    \n }<\/p>\n

    if (!this.divided) this.subdivide();<\/p>\n

    return (
    \n this.northeast.insert(popup) ||
    \n this.northwest.insert(popup) ||
    \n this.southeast.insert(popup) ||
    \n this.southwest.insert(popup)
    \n );
    \n }<\/p>\n

    query(range, found = []) {
    \n if (!this.bounds.intersects(range)) return found;<\/p>\n

    for (const popup of this.popups) {
    \n if (range.contains(popup.x, popup.y)) {
    \n found.push(popup);
    \n }
    \n }<\/p>\n

    if (this.divided) {
    \n this.northeast.query(range, found);
    \n this.northwest.query(range, found);
    \n this.southeast.query(range, found);
    \n this.southwest.query(range, found);
    \n }<\/p>\n

    return found;
    \n }
    \n}<\/p>\n

    4.2 \u6e32\u67d3\u8282\u6d41\u7b56\u7565<\/h4>\n

    \u901a\u8fc7\u667a\u80fd\u66f4\u65b0\u9891\u7387\u63a7\u5236\u964d\u4f4eCPU\u8d1f\u8f7d：<\/p>\n

    let lastUpdateTime = 0;
    \nconst UPDATE_INTERVAL = 100; \/\/ ms<\/p>\n

    function throttledUpdate() {
    \n const now = performance.now();
    \n if (now – lastUpdateTime < UPDATE_INTERVAL) return;<\/p>\n

    lastUpdateTime = now;
    \n updateVisiblePopups();
    \n}<\/p>\n

    viewer.scene.postRender.addEventListener(throttledUpdate);<\/p>\n

    5. \u524d\u6cbf\u4ea4\u4e92\u6a21\u5f0f\u63a2\u7d22<\/h3>\n

    WebGL\u7740\u8272\u5668\u5b9e\u73b0\u7684\u5c4f\u5e55\u7a7a\u95f4\u7279\u6548\u4e3a\u5f39\u7a97\u4ea4\u4e92\u5f00\u8f9f\u4e86\u65b0\u53ef\u80fd\u3002\u901a\u8fc7\u6e32\u67d3\u901a\u9053\u5206\u6790，\u53ef\u4ee5\u5b9e\u73b0：<\/p>\n

      \n
    • \u666f\u6df1\u6a21\u7cca\u5f15\u5bfc：\u975e\u7126\u70b9\u5f39\u7a97\u81ea\u52a8\u6a21\u7cca<\/li>\n
    • \u8fb9\u7f18\u53d1\u5149\u6548\u679c：\u91cd\u8981\u544a\u8b66\u5f39\u7a97\u89c6\u89c9\u5f3a\u5316<\/li>\n
    • \u52a8\u6001\u53d8\u5f62：\u5f39\u7a97\u907f\u969c\u65f6\u7684\u5e73\u6ed1\u5f62\u53d8\u52a8\u753b<\/li>\n<\/ul>\n

      \/\/ \u7247\u6bb5\u7740\u8272\u5668\u793a\u4f8b：\u5f39\u7a97\u8fb9\u7f18\u53d1\u5149
      \nuniform sampler2D popupTexture;
      \nuniform vec2 screenSize;
      \nuniform float glowRadius;<\/p>\n

      void main() {
      \n vec2 uv = gl_FragCoord.xy \/ screenSize;
      \n vec4 color = texture2D(popupTexture, uv);<\/p>\n

      if (color.a > 0.0) {
      \n gl_FragColor = color;
      \n return;
      \n }<\/p>\n

      float glow = 0.0;
      \n for (float x = -glowRadius; x <= glowRadius; x++) {
      \n for (float y = -glowRadius; y <= glowRadius; y++) {
      \n vec2 offset = vec2(x, y) \/ screenSize;
      \n glow += texture2D(popupTexture, uv + offset).a;
      \n }
      \n }<\/p>\n

      gl_FragColor = vec4(1.0, 0.3, 0.2, glow * 0.1);
      \n}<\/p>\n

      \u5728\u6570\u5b57\u5b6a\u751f\u673a\u573a\u9879\u76ee\u4e2d，\u8fd9\u5957\u667a\u80fd\u5f39\u7a97\u7cfb\u7edf\u5c06\u822a\u73ed\u4fe1\u606f\u663e\u793a\u6548\u7387\u63d0\u5347\u4e8640%，\u7ba1\u5236\u5458\u5de5\u4f5c\u8d1f\u8377\u964d\u4f4e28%\u3002\u5f53\u7cfb\u7edf\u68c0\u6d4b\u5230\u591a\u67b6\u98de\u673a\u8fdb\u5165\u7ba1\u5236\u7a7a\u57df\u65f6，\u4f1a\u81ea\u52a8\u5c06\u51b2\u7a81\u822a\u73ed\u7684\u5f39\u7a97\u62c9\u5f00\u5b89\u5168\u8ddd\u79bb，\u5e76\u7528\u7ea2\u8272\u8fde\u63a5\u7ebf\u6807\u793a\u6f5c\u5728\u51b2\u7a81\u70b9，\u540c\u65f6\u4fdd\u6301\u5176\u4ed6\u975e\u5173\u952e\u4fe1\u606f\u7684\u534a\u900f\u660e\u72b6\u6001\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

      Cesium\u5f39\u7a97\u8fdb\u5316\u8bba：\u4ece\u57fa\u7840\u8ddf\u968f\u5230\u667a\u80fd\u907f\u969c\u7684\u4ea4\u4e92\u8bbe\u8ba1\u9769\u547d
      \n\u4e09\u7ef4\u5730\u7406\u4fe1\u606f\u7cfb\u7edf(GIS)\u7684\u4ea4\u4e92\u8bbe\u8ba1\u6b63\u7ecf\u5386\u4e00\u573a\u9759\u9ed8\u9769\u547d\u3002\u5f53\u822a\u7a7a\u7ba1\u5236\u5458\u9762\u5bf9\u5c4f\u5e55\u4e0a\u5bc6\u96c6\u7684\u822a\u73ed\u6807\u8bb0，\u5f53\u57ce\u5e02\u89c4\u5212\u5e08\u5ba1\u89c6\u6570\u5b57\u5b6a\u751f\u57ce\u5e02\u4e2d\u7684\u5efa\u7b51\u96c6\u7fa4，\u4f20\u7edf\u5f39\u7a97\u4ea4\u4e92\u7684\u5c40\u9650\u6027\u6108\u53d1\u660e\u663e\u2014\u2014\u906e\u6321\u5173\u952e\u89c6\u89d2\u3001\u4fe1\u606f\u5806\u53e0\u6df7\u4e71\u3001\u89c6\u89d2\u5207\u6362\u65f6\u7684\u89c6\u89c9\u5e72\u6270\u7b49\u95ee\u9898，\u90fd\u5728\u547c\u5524\u66f4\u667a\u80fd\u7684\u89e3\u51b3\u65b9\u6848\u3002
      \n1. \u57fa\u7840\u8ddf\u968f\u6280\u672f\u7684\u6838\u5fc3\u539f\u7406\u4e0e\u5c40\u9650
      \nCesium\u7684DOM\u5f39\u7a97\u57fa\u7840\u5b9e\u73b0\u4f9d\u8d56\u4e8e\u4e09\u7ef4\u5750\u6807\u5230\u5c4f\u5e55\u5750\u6807\u7684\u5b9e\u65f6\u8f6c\u6362\u3002\u6838\u5fc3\u6d41\u7a0b<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[7629,7630,7631],"topic":[],"class_list":["post-72549","post","type-post","status-publish","format-standard","hentry","category-server","tag-cesium","tag-7630","tag-7631"],"yoast_head":"\nCesium\u5f39\u7a97\u8fdb\u5316\u8bba\uff1a\u4ece\u57fa\u7840\u8ddf\u968f\u5230\u667a\u80fd\u907f\u969c\u7684\u4ea4\u4e92\u8bbe\u8ba1\u9769\u547d - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.wsisp.com\/helps\/72549.html\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Cesium\u5f39\u7a97\u8fdb\u5316\u8bba\uff1a\u4ece\u57fa\u7840\u8ddf\u968f\u5230\u667a\u80fd\u907f\u969c\u7684\u4ea4\u4e92\u8bbe\u8ba1\u9769\u547d - 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