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Stabilize Earth module and fix satellite TLE handling

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This commit is contained in:
linkong
2026-03-26 10:29:50 +08:00
parent 3fd6cbb6f7
commit ce5feba3b9
14 changed files with 2132 additions and 1069 deletions
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56
frontend/public/earth/js/utils.js
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@@ -1,8 +1,8 @@
// utils.js - Utility functions for coordinate conversion
import * as THREE from 'three';
import * as THREE from "three";
import { CONFIG } from './constants.js';
import { CONFIG } from "./constants.js";
// Convert latitude/longitude to 3D vector
export function latLonToVector3(lat, lon, radius = CONFIG.earthRadius) {
@@ -18,26 +18,33 @@ export function latLonToVector3(lat, lon, radius = CONFIG.earthRadius) {
// Convert 3D vector to latitude/longitude
export function vector3ToLatLon(vector) {
const radius = Math.sqrt(vector.x * vector.x + vector.y * vector.y + vector.z * vector.z);
const lat = 90 - (Math.acos(vector.y / radius) * 180 / Math.PI);
let lon = (Math.atan2(vector.z, -vector.x) * 180 / Math.PI) - 180;
const radius = Math.sqrt(
vector.x * vector.x + vector.y * vector.y + vector.z * vector.z,
);
const lat = 90 - (Math.acos(vector.y / radius) * 180) / Math.PI;
let lon = (Math.atan2(vector.z, -vector.x) * 180) / Math.PI - 180;
while (lon <= -180) lon += 360;
while (lon > 180) lon -= 360;
return {
lat: parseFloat(lat.toFixed(4)),
lon: parseFloat(lon.toFixed(4)),
alt: radius - CONFIG.earthRadius
alt: radius - CONFIG.earthRadius,
};
}
// Convert screen coordinates to Earth surface 3D coordinates
export function screenToEarthCoords(clientX, clientY, camera, earth, domElement = document.body) {
const raycaster = new THREE.Raycaster();
const mouse = new THREE.Vector2();
export function screenToEarthCoords(
clientX,
clientY,
camera,
earth,
domElement = document.body,
raycaster = new THREE.Raycaster(),
mouse = new THREE.Vector2(),
) {
if (domElement === document.body) {
mouse.x = (clientX / window.innerWidth) * 2 - 1;
mouse.y = -(clientY / window.innerHeight) * 2 + 1;
@@ -60,17 +67,26 @@ export function screenToEarthCoords(clientX, clientY, camera, earth, domElement
}
// Calculate accurate spherical distance between two points (Haversine formula)
export function calculateDistance(lat1, lon1, lat2, lon2, radius = CONFIG.earthRadius) {
export function calculateDistance(
lat1,
lon1,
lat2,
lon2,
radius = CONFIG.earthRadius,
) {
const toRad = (angle) => (angle * Math.PI) / 180;
const dLat = toRad(lat2 - lat1);
const dLon = toRad(lon2 - lon1);
const a = Math.sin(dLat / 2) * Math.sin(dLat / 2) +
Math.cos(toRad(lat1)) * Math.cos(toRad(lat2)) *
Math.sin(dLon / 2) * Math.sin(dLon / 2);
const a =
Math.sin(dLat / 2) * Math.sin(dLat / 2) +
Math.cos(toRad(lat1)) *
Math.cos(toRad(lat2)) *
Math.sin(dLon / 2) *
Math.sin(dLon / 2);
const c = 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1 - a));
return radius * c;
}