From 82f7aa29a6cb0dc2bbe3bf6fa9779aae2407da0e Mon Sep 17 00:00:00 2001
From: rayd1o <qiank@sbuild.cn>
Date: Thu, 19 Mar 2026 12:42:08 +0800
Subject: [PATCH] =?UTF-8?q?refactor:=20=E6=8F=90=E5=8F=96=E5=9C=B0?=
 =?UTF-8?q?=E7=90=83=E5=9D=90=E6=A0=87=E5=B8=B8=E9=87=8F=E5=88=B0EARTH=5FC?=
 =?UTF-8?q?ONFIG?=
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- 添加tilt、chinaLat、chinaLon、latCoefficient等常量
- earth.js和controls.js使用常量替代硬编码
- 离开地球时隐藏tooltip
---
 frontend/public/earth/js/constants.js | 14 ++++++++++++++
 frontend/public/earth/js/controls.js  | 14 +++++---------
 frontend/public/earth/js/earth.js     |  6 +++---
 3 files changed, 22 insertions(+), 12 deletions(-)

diff --git a/frontend/public/earth/js/constants.js b/frontend/public/earth/js/constants.js
index 71fce8a3..912783ba 100644
--- a/frontend/public/earth/js/constants.js
+++ b/frontend/public/earth/js/constants.js
@@ -9,6 +9,20 @@ export const CONFIG = {
   rotationSpeed: 0.002,
 };
 
+// Earth coordinate constants
+export const EARTH_CONFIG = {
+  tilt: 23.5,  // earth tilt angle (degrees)
+  tiltRad: 23.5 * Math.PI / 180,  // earth tilt angle (radians)
+  
+  // hangzhou coordinates
+  chinaLat: 30.2741,
+  chinaLon: 120.1552,
+  chinaRotLon: 120.1552 - 270,  // for rotation calculation (chinaLon - 270)
+  
+  // view reset coefficient
+  latCoefficient: 0.5
+};
+
 export const PATHS = {
   cablesApi: '/api/v1/visualization/geo/cables',
   landingPointsApi: '/api/v1/visualization/geo/landing-points',
diff --git a/frontend/public/earth/js/controls.js b/frontend/public/earth/js/controls.js
index 1ca92aef..3dfec120 100644
--- a/frontend/public/earth/js/controls.js
+++ b/frontend/public/earth/js/controls.js
@@ -1,6 +1,6 @@
 // controls.js - Zoom, rotate and toggle controls
 
-import { CONFIG } from './constants.js';
+import { CONFIG, EARTH_CONFIG } from './constants.js';
 import { updateZoomDisplay, showStatusMessage } from './ui.js';
 import { toggleTerrain } from './earth.js';
 import { reloadData } from './main.js';
@@ -153,13 +153,9 @@ function animateValue(start, end, duration, onUpdate, onComplete) {
 export function resetView(camera) {
   if (!earthObj) return;
   
-  const chinaLat = 40;
-  const chinaLon = -154;
-  
-  const baseTilt = 23.5 * Math.PI / 180;
-  const latRot = chinaLat * Math.PI / 180;
-  const targetRotX = baseTilt + latRot * 0.5;
-  const targetRotY = -(chinaLon * Math.PI / 180);
+  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;
@@ -176,7 +172,7 @@ export function resetView(camera) {
     updateZoomDisplay(zoomLevel, camera.position.z.toFixed(0));
   }, () => {
     zoomLevel = 1.0;
-    showStatusMessage('视角已重置到中国', 'info');
+    showStatusMessage('视角已重置', 'info');
   });
   
   if (typeof window.clearLockedCable === 'function') {
diff --git a/frontend/public/earth/js/earth.js b/frontend/public/earth/js/earth.js
index 2d16289f..f30934d9 100644
--- a/frontend/public/earth/js/earth.js
+++ b/frontend/public/earth/js/earth.js
@@ -1,7 +1,7 @@
 // earth.js - 3D Earth creation module
 
 import * as THREE from 'three';
-import { CONFIG } from './constants.js';
+import { CONFIG, EARTH_CONFIG } from './constants.js';
 import { latLonToVector3 } from './utils.js';
 
 export let earth = null;
@@ -22,9 +22,9 @@ export function createEarth(scene) {
     opacity: 0.8,
     side: THREE.DoubleSide
   });
-  
+   
   earth = new THREE.Mesh(geometry, material);
-  earth.rotation.x = 23.5 * Math.PI / 180;
+  earth.rotation.x = EARTH_CONFIG.tiltRad;
   scene.add(earth);
   
   const textureUrls = [