From 6fabbcfe5ca08a4eae74b2cfdb89a0d07aab4505 Mon Sep 17 00:00:00 2001
From: rayd1o <qiank@sbuild.cn>
Date: Thu, 19 Mar 2026 12:49:38 +0800
Subject: [PATCH] feat(earth): request geolocation on resetView, fallback to
 China

---
 frontend/public/earth/js/controls.js | 52 +++++++++++++++++-----------
 1 file changed, 32 insertions(+), 20 deletions(-)

diff --git a/frontend/public/earth/js/controls.js b/frontend/public/earth/js/controls.js
index 3dfec120..cb36c094 100644
--- a/frontend/public/earth/js/controls.js
+++ b/frontend/public/earth/js/controls.js
@@ -153,27 +153,39 @@ function animateValue(start, end, duration, onUpdate, onComplete) {
 export function resetView(camera) {
   if (!earthObj) return;
   
-  const latRot = EARTH_CONFIG.chinaLat * Math.PI / 180;
-  const targetRotX = EARTH_CONFIG.tiltRad + latRot * EARTH_CONFIG.latCoefficient;
-  const targetRotY = -(EARTH_CONFIG.chinaRotLon * Math.PI / 180);
-  
-  const startRotX = earthObj.rotation.x;
-  const startRotY = earthObj.rotation.y;
-  const startZoom = zoomLevel;
-  const targetZoom = 1.0;
-  
-  animateValue(0, 1, 800, (progress) => {
-    const ease = 1 - Math.pow(1 - progress, 3);
-    earthObj.rotation.x = startRotX + (targetRotX - startRotX) * ease;
-    earthObj.rotation.y = startRotY + (targetRotY - startRotY) * ease;
+  function animateToView(targetLat, targetLon, targetRotLon) {
+    const latRot = targetLat * Math.PI / 180;
+    const targetRotX = EARTH_CONFIG.tiltRad + latRot * EARTH_CONFIG.latCoefficient;
+    const targetRotY = -(targetRotLon * Math.PI / 180);
     
-    zoomLevel = startZoom + (targetZoom - startZoom) * ease;
-    camera.position.z = CONFIG.defaultCameraZ / zoomLevel;
-    updateZoomDisplay(zoomLevel, camera.position.z.toFixed(0));
-  }, () => {
-    zoomLevel = 1.0;
-    showStatusMessage('视角已重置', 'info');
-  });
+    const startRotX = earthObj.rotation.x;
+    const startRotY = earthObj.rotation.y;
+    const startZoom = zoomLevel;
+    const targetZoom = 1.0;
+    
+    animateValue(0, 1, 800, (progress) => {
+      const ease = 1 - Math.pow(1 - progress, 3);
+      earthObj.rotation.x = startRotX + (targetRotX - startRotX) * ease;
+      earthObj.rotation.y = startRotY + (targetRotY - startRotY) * ease;
+      
+      zoomLevel = startZoom + (targetZoom - startZoom) * ease;
+      camera.position.z = CONFIG.defaultCameraZ / zoomLevel;
+      updateZoomDisplay(zoomLevel, camera.position.z.toFixed(0));
+    }, () => {
+      zoomLevel = 1.0;
+      showStatusMessage('视角已重置', 'info');
+    });
+  }
+  
+  if (navigator.geolocation) {
+    navigator.geolocation.getCurrentPosition(
+      (pos) => animateToView(pos.coords.latitude, pos.coords.longitude, -pos.coords.longitude),
+      () => animateToView(EARTH_CONFIG.chinaLat, EARTH_CONFIG.chinaLon, EARTH_CONFIG.chinaRotLon),
+      { timeout: 5000, enableHighAccuracy: false }
+    );
+  } else {
+    animateToView(EARTH_CONFIG.chinaLat, EARTH_CONFIG.chinaLon, EARTH_CONFIG.chinaRotLon);
+  }
   
   if (typeof window.clearLockedCable === 'function') {
     window.clearLockedCable();