From 9df646c91c244b3b0a25c9070e957da0bf054bca Mon Sep 17 00:00:00 2001
From: fukunee <fukun.ee@foxmail.com>
Date: Sat, 19 Sep 2026 17:07:49 +0800
Subject: [PATCH] =?UTF-8?q?=E4=B8=AD=E9=94=AE=E5=9B=9E=E6=AD=A3=E6=94=B9?=
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---
 src/scene/CesiumGlobe.js | 16 ++++++----------
 1 file changed, 6 insertions(+), 10 deletions(-)

diff --git a/src/scene/CesiumGlobe.js b/src/scene/CesiumGlobe.js
index f437405..1970982 100644
--- a/src/scene/CesiumGlobe.js
+++ b/src/scene/CesiumGlobe.js
@@ -400,7 +400,7 @@ export class CesiumGlobe {
     viewer.screenSpaceEventHandler.removeInputAction(Cesium.ScreenSpaceEventType.LEFT_DOUBLE_CLICK);
   }
 
-  // 右键原生 tilt：按下记录相机状态；松开不回正。中键：回正（flyTo 动画飞回按下前状态）
+  // 右键原生 tilt：按下记录位置；松开不回正。中键：回正到“不倾斜不旋转”（天底 + 北朝上）
   _setupRightRestore() {
     const scene = this.viewer.scene;
     const camera = this.viewer.camera;
@@ -409,11 +409,7 @@ export class CesiumGlobe {
 
     handler.setInputAction(() => {
       camera.cancelFlight(); // 取消可能仍在进行的回正动画
-      this._rightHome = {
-        position: Cesium.Cartesian3.clone(camera.position),
-        direction: Cesium.Cartesian3.clone(camera.direction),
-        up: Cesium.Cartesian3.clone(camera.up),
-      };
+      this._rightHome = Cesium.Cartesian3.clone(camera.position);
     }, Cesium.ScreenSpaceEventType.RIGHT_DOWN);
 
     handler.setInputAction(() => {
@@ -423,13 +419,13 @@ export class CesiumGlobe {
     }, Cesium.ScreenSpaceEventType.RIGHT_UP);
 
     handler.setInputAction(() => {
-      // 中键：回正（动画飞回）
+      // 中键：回正（天底 + 北朝上，保持原注视点）
       if (!this._rightHome) return;
-      const s = this._rightHome;
+      const pos = this._rightHome;
       this._rightHome = null;
       camera.flyTo({
-        destination: s.position,
-        orientation: { direction: s.direction, up: s.up },
+        destination: pos,
+        orientation: { heading: 0, pitch: Cesium.Math.toRadians(-90), roll: 0 },
         duration: 0.5,
       });
     }, Cesium.ScreenSpaceEventType.MIDDLE_DOWN);