From a69ebc8e6b3ebdba1da0a2c44c66f1cc567e8e17 Mon Sep 17 00:00:00 2001
From: mmc <1556375442@qq.com>
Date: Mon, 1 Jun 2026 09:12:08 +0800
Subject: [PATCH] =?UTF-8?q?=E5=9C=B0=E5=9B=BE=E4=B8=8A=E7=94=BB=E8=BD=A8?=
 =?UTF-8?q?=E8=BF=B9?=
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---
 src/components/Map.jsx | 15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)

diff --git a/src/components/Map.jsx b/src/components/Map.jsx
index 2d509a4..07a85b4 100644
--- a/src/components/Map.jsx
+++ b/src/components/Map.jsx
@@ -175,7 +175,20 @@ export default function CesiumMap({ realtimePosition, pathPoints = [], devices =
 			viewer.entities.remove(trackLineRef.current);
 		}
 
-		if (!points || points.length === 0) return;
+		// 2. 传入的 points 本身为空 → 清空轨迹退出
+		if (!points || points.length === 0) {
+			const viewer = viewerRef.current;
+			if (viewer) {
+				try {
+					if (trackLineRef.current) {
+						viewer.entities.remove(trackLineRef.current);
+						trackLineRef.current = null;
+					}
+				} catch (e) { }
+				viewer.scene.requestRender(); // 强制刷新！
+			}
+			return;
+		}
 
 		const validPoints = points.filter(p => {
 			const lon = Number(p.lon);