diff --git a/backend/app/server.js b/backend/app/server.js index 41c5b04..af1ed10 100644 --- a/backend/app/server.js +++ b/backend/app/server.js @@ -1,66 +1,130 @@ const express = require('express'); const cors = require('cors'); +const { Pool } = require('pg'); require('dotenv').config(); const app = express(); const PORT = process.env.PORT || 3001; +// Database connection pool +const pool = new Pool({ + connectionString: process.env.DATABASE_URL || 'postgresql://line_of_sight:line_of_sight_pass@postgres:5432/line_of_sight' +}); + app.use(cors()); app.use(express.json()); -// Mock conurbation data for MVP -const MOCK_CONURBATIONS = [ - { id: 1, name: "London", population: 9000000, distance_km: 0, lat: 51.5074, lon: -0.1278 }, - { id: 2, name: "Paris", population: 2161000, distance_km: 344, lat: 48.8566, lon: 2.3522 }, - { id: 3, name: "Berlin", population: 3644000, distance_km: 878, lat: 52.5200, lon: 13.4050 }, - { id: 4, name: "Warsaw", population: 1793000, distance_km: 1200, lat: 52.2297, lon: 21.0122 }, - { id: 5, name: "Moscow", population: 12506000, distance_km: 2063, lat: 55.7558, lon: 37.6173 }, - { id: 6, name: "Kazan", population: 1257000, distance_km: 2850, lat: 55.7897, lon: 49.1219 }, - { id: 7, name: "Almaty", population: 2000000, distance_km: 3900, lat: 43.2220, lon: 76.8512 }, - { id: 8, name: "Urumqi", population: 3500000, distance_km: 4500, lat: 43.8256, lon: 87.6168 }, - { id: 9, name: "Lahore", population: 11126000, distance_km: 5400, lat: 31.5204, lon: 74.3587 }, - { id: 10, name: "New Delhi", population: 29399000, distance_km: 5800, lat: 28.6139, lon: 77.2090 }, - { id: 11, name: "Dhaka", population: 21006000, distance_km: 6200, lat: 23.8103, lon: 90.4125 }, - { id: 12, name: "Chennai", population: 10971000, distance_km: 6500, lat: 13.0827, lon: 80.2707 }, - { id: 13, name: "Bangkok", population: 10539000, distance_km: 7200, lat: 13.7563, lon: 100.5018 }, - { id: 14, name: "Jakarta", population: 10562000, distance_km: 8100, lat: -6.2088, lon: 106.8456 }, - { id: 15, name: "Singapore", population: 5686000, distance_km: 8300, lat: 1.3521, lon: 103.8198 }, - { id: 16, name: "Manila", population: 17801000, distance_km: 8700, lat: 14.5995, lon: 120.9842 }, - { id: 17, name: "Tokyo", population: 37400000, distance_km: 9500, lat: 35.6762, lon: 139.6503 }, - { id: 18, name: "Seoul", population: 9720000, distance_km: 9200, lat: 37.5665, lon: 126.9780 }, - { id: 19, name: "Beijing", population: 21540000, distance_km: 8900, lat: 39.9042, lon: 116.4074 }, - { id: 20, name: "Shanghai", population: 27058000, distance_km: 9000, lat: 31.2304, lon: 121.4737 } -]; +// Helper to calculate destination point given start, bearing, and distance (km) +const calculateDestination = (lat, lon, bearing, distance) => { + const R = 6371; + const brng = (bearing * Math.PI) / 180; + const φ1 = (lat * Math.PI) / 180; + const λ1 = (lon * Math.PI) / 180; + const δ = distance / R; -// Mock API endpoint - returns dummy conurbations based on input coordinates -app.get('/api/line-of-sight', (req, res) => { + const φ2 = Math.asin( + Math.sin(φ1) * Math.cos(δ) + + Math.cos(φ1) * Math.sin(δ) * Math.cos(brng) + ); + const λ2 = + λ1 + + Math.atan2( + Math.sin(brng) * Math.sin(δ) * Math.cos(φ1), + Math.cos(δ) - Math.sin(φ1) * Math.sin(φ2) + ); + + return { + lat: (φ2 * 180) / Math.PI, + lon: (((λ2 * 180) / Math.PI + 540) % 360) - 180 + }; +}; + +// Real API endpoint - uses PostGIS for spatial queries +app.get('/api/line-of-sight', async (req, res) => { const { lat, lon, direction, tolerance } = req.query; - console.log(`Received request: lat=${lat}, lon=${lon}, direction=${direction}, tolerance=${tolerance}`); - - // Return mock data for MVP - res.json({ - success: true, - data: { - start_point: { lat: parseFloat(lat) || 51.5074, lon: parseFloat(lon) || -0.1278 }, - direction: parseInt(direction) || 45, - tolerance_km: parseInt(tolerance) || 50, - conurbations: MOCK_CONURBATIONS.slice(0, 20), - line_coordinates: [ - { lat: 51.5074, lon: -0.1278 }, - { lat: 48.8566, lon: 2.3522 }, - { lat: 52.5200, lon: 13.4050 }, - { lat: 55.7558, lon: 37.6173 }, - { lat: 43.2220, lon: 76.8512 }, - { lat: 28.6139, lon: 77.2090 }, - { lat: 13.7563, lon: 100.5018 }, - { lat: -6.2088, lon: 106.8456 }, - { lat: 35.6762, lon: 139.6503 }, - { lat: 51.5074, lon: -0.1278 } // Complete the circle - ] - }, - message: "Mock data returned for MVP - Real geospatial calculations coming soon" - }); + const startLat = parseFloat(lat) || 51.5074; + const startLon = parseFloat(lon) || -0.1278; + const bearing = parseInt(direction) || 0; + const toleranceKm = parseInt(tolerance) || 50; + + console.log(`Processing real request: lat=${startLat}, lon=${startLon}, bearing=${bearing}, tolerance=${toleranceKm}`); + + try { + // Generate path points for visualization and spatial query + const pathPoints = []; + const totalDistance = 20000; + const steps = 80; // More steps for smoother speed transition + + for (let i = 0; i <= steps; i++) { + const dist = (totalDistance * i) / steps; + pathPoints.push(calculateDestination(startLat, startLon, bearing, dist)); + } + + // Batch check for 'over water' status for all path points + // We'll consider a point 'over water' if no city is within 500km + const waterChecks = await Promise.all(pathPoints.map(async (p) => { + const checkQuery = ` + SELECT EXISTS ( + SELECT 1 FROM cities + WHERE ST_DWithin(geom, ST_SetSRID(ST_MakePoint($1, $2), 4326)::geography, 500000) + LIMIT 1 + ) as has_land; + `; + const res = await pool.query(checkQuery, [p.lon, p.lat]); + return !res.rows[0].has_land; + })); + + const pathPointsWithWater = pathPoints.map((p, i) => ({ + ...p, + is_over_water: waterChecks[i] + })); + + const lineWKT = `LINESTRING(${pathPoints.map(p => `${p.lon} ${p.lat}`).join(',')})`; + + const query = ` + WITH path AS ( + SELECT ST_GeogFromText($1) as route, + ST_MakePoint($3, $4)::geography as start_node + ) + SELECT + id, + name, + population, + country, + ST_Y(geom::geometry) as lat, + ST_X(geom::geometry) as lon, + ST_Distance(geom, (SELECT route FROM path)) / 1000 as distance_off_line_km, + ST_Distance(geom, (SELECT start_node FROM path)) / 1000 as distance_from_start_km, + ST_LineLocatePoint((SELECT route FROM path)::geometry, geom::geometry) as pos_on_line + FROM cities + WHERE ST_DWithin(geom, (SELECT route FROM path), $2 * 1000) + ORDER BY pos_on_line ASC + LIMIT 200; + `; + + const result = await pool.query(query, [lineWKT, toleranceKm, startLon, startLat]); + + res.json({ + success: true, + data: { + start_point: { lat: startLat, lon: startLon }, + direction: bearing, + tolerance_km: toleranceKm, + conurbations: result.rows.map(row => ({ + ...row, + name: row.name || 'Unknown', + country: row.country || 'Unknown', + distance_km: Math.round(row.distance_from_start_km), + off_line_km: Math.round(row.distance_off_line_km) + })), + line_coordinates: pathPointsWithWater + } + }); + } catch (err) { + console.error('Database query error:', err); + res.status(500).json({ success: false, error: 'Database query failed' }); + } }); // Health check endpoint diff --git a/backend/package-lock.json b/backend/package-lock.json index 1fbc974..d32c9a4 100644 --- a/backend/package-lock.json +++ b/backend/package-lock.json @@ -8,6 +8,7 @@ "name": "line-of-sight-backend", "version": "1.0.0", "dependencies": { + "axios": "^1.13.6", "cors": "^2.8.6", "dotenv": "^17.3.1", "express": "^5.2.1", @@ -1426,6 +1427,23 @@ "sprintf-js": "~1.0.2" } }, + "node_modules/asynckit": { + "version": "0.4.0", + "resolved": "https://registry.npmjs.org/asynckit/-/asynckit-0.4.0.tgz", + "integrity": "sha512-Oei9OH4tRh0YqU3GxhX79dM/mwVgvbZJaSNaRk+bshkj0S5cfHcgYakreBjrHwatXKbz+IoIdYLxrKim2MjW0Q==", + "license": "MIT" + }, + "node_modules/axios": { + "version": "1.13.6", + "resolved": "https://registry.npmjs.org/axios/-/axios-1.13.6.tgz", + "integrity": "sha512-ChTCHMouEe2kn713WHbQGcuYrr6fXTBiu460OTwWrWob16g1bXn4vtz07Ope7ewMozJAnEquLk5lWQWtBig9DQ==", + "license": "MIT", + "dependencies": { + "follow-redirects": "^1.15.11", + "form-data": "^4.0.5", + "proxy-from-env": "^1.1.0" + } + }, "node_modules/babel-jest": { "version": "30.3.0", "resolved": "https://registry.npmjs.org/babel-jest/-/babel-jest-30.3.0.tgz", @@ -1891,6 +1909,18 @@ "integrity": "sha512-dOy+3AuW3a2wNbZHIuMZpTcgjGuLU/uBL/ubcZF9OXbDo8ff4O8yVp5Bf0efS8uEoYo5q4Fx7dY9OgQGXgAsQA==", "dev": true }, + "node_modules/combined-stream": { + "version": "1.0.8", + "resolved": "https://registry.npmjs.org/combined-stream/-/combined-stream-1.0.8.tgz", + "integrity": "sha512-FQN4MRfuJeHf7cBbBMJFXhKSDq+2kAArBlmRBvcvFE5BB1HZKXtSFASDhdlz9zOYwxh8lDdnvmMOe/+5cdoEdg==", + "license": "MIT", + "dependencies": { + "delayed-stream": "~1.0.0" + }, + "engines": { + "node": ">= 0.8" + } + }, "node_modules/concat-map": { "version": "0.0.1", "resolved": "https://registry.npmjs.org/concat-map/-/concat-map-0.0.1.tgz", @@ -2008,6 +2038,15 @@ "node": ">=0.10.0" } }, + "node_modules/delayed-stream": { + "version": "1.0.0", + "resolved": "https://registry.npmjs.org/delayed-stream/-/delayed-stream-1.0.0.tgz", + "integrity": "sha512-ZySD7Nf91aLB0RxL4KGrKHBXl7Eds1DAmEdcoVawXnLD7SDhpNgtuII2aAkg7a7QS41jxPSZ17p4VdGnMHk3MQ==", + "license": "MIT", + "engines": { + "node": ">=0.4.0" + } + }, "node_modules/depd": { "version": "2.0.0", "resolved": "https://registry.npmjs.org/depd/-/depd-2.0.0.tgz", @@ -2128,6 +2167,21 @@ "node": ">= 0.4" } }, + "node_modules/es-set-tostringtag": { + "version": "2.1.0", + "resolved": "https://registry.npmjs.org/es-set-tostringtag/-/es-set-tostringtag-2.1.0.tgz", + "integrity": "sha512-j6vWzfrGVfyXxge+O0x5sh6cvxAog0a/4Rdd2K36zCMV5eJ+/+tOAngRO8cODMNWbVRdVlmGZQL2YS3yR8bIUA==", + "license": "MIT", + "dependencies": { + "es-errors": "^1.3.0", + "get-intrinsic": "^1.2.6", + "has-tostringtag": "^1.0.2", + "hasown": "^2.0.2" + }, + "engines": { + "node": ">= 0.4" + } + }, "node_modules/escalade": { "version": "3.2.0", "resolved": "https://registry.npmjs.org/escalade/-/escalade-3.2.0.tgz", @@ -2329,6 +2383,26 @@ "node": ">=8" } }, + "node_modules/follow-redirects": { + "version": "1.15.11", + "resolved": "https://registry.npmjs.org/follow-redirects/-/follow-redirects-1.15.11.tgz", + "integrity": "sha512-deG2P0JfjrTxl50XGCDyfI97ZGVCxIpfKYmfyrQ54n5FO/0gfIES8C/Psl6kWVDolizcaaxZJnTS0QSMxvnsBQ==", + "funding": [ + { + "type": "individual", + "url": "https://github.com/sponsors/RubenVerborgh" + } + ], + "license": "MIT", + "engines": { + "node": ">=4.0" + }, + "peerDependenciesMeta": { + "debug": { + "optional": true + } + } + }, "node_modules/foreground-child": { "version": "3.3.1", "resolved": "https://registry.npmjs.org/foreground-child/-/foreground-child-3.3.1.tgz", @@ -2345,6 +2419,43 @@ "url": "https://github.com/sponsors/isaacs" } }, + "node_modules/form-data": { + "version": "4.0.5", + "resolved": "https://registry.npmjs.org/form-data/-/form-data-4.0.5.tgz", + "integrity": "sha512-8RipRLol37bNs2bhoV67fiTEvdTrbMUYcFTiy3+wuuOnUog2QBHCZWXDRijWQfAkhBj2Uf5UnVaiWwA5vdd82w==", + 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"https://registry.npmjs.org/forwarded/-/forwarded-0.2.0.tgz", @@ -2533,6 +2644,21 @@ "url": "https://github.com/sponsors/ljharb" } }, + "node_modules/has-tostringtag": { + "version": "1.0.2", + "resolved": "https://registry.npmjs.org/has-tostringtag/-/has-tostringtag-1.0.2.tgz", + "integrity": "sha512-NqADB8VjPFLM2V0VvHUewwwsw0ZWBaIdgo+ieHtK3hasLz4qeCRjYcqfB6AQrBggRKppKF8L52/VqdVsO47Dlw==", + "license": "MIT", + "dependencies": { + "has-symbols": "^1.0.3" + }, + "engines": { + "node": ">= 0.4" + }, + "funding": { + "url": "https://github.com/sponsors/ljharb" + } + }, "node_modules/hasown": { "version": "2.0.2", "resolved": "https://registry.npmjs.org/hasown/-/hasown-2.0.2.tgz", @@ -4158,6 +4284,12 @@ "node": ">= 0.10" } }, + "node_modules/proxy-from-env": { + "version": "1.1.0", + "resolved": "https://registry.npmjs.org/proxy-from-env/-/proxy-from-env-1.1.0.tgz", + "integrity": "sha512-D+zkORCbA9f1tdWRK0RaCR3GPv50cMxcrz4X8k5LTSUD1Dkw47mKJEZQNunItRTkWwgtaUSo1RVFRIG9ZXiFYg==", + "license": "MIT" + }, "node_modules/pstree.remy": { "version": "1.1.8", "resolved": "https://registry.npmjs.org/pstree.remy/-/pstree.remy-1.1.8.tgz", diff --git a/backend/package.json b/backend/package.json index 5dd16ad..1769387 100644 --- a/backend/package.json +++ b/backend/package.json @@ -6,16 +6,18 @@ "scripts": { "start": "node app/server.js", "dev": "nodemon app/server.js", - "test": "jest" + "test": "jest", + "seed-data": "node scripts/import_cities.js" }, "dependencies": { - "express": "^5.2.1", + "axios": "^1.13.6", "cors": "^2.8.6", - "pg": "^8.20.0", - "dotenv": "^17.3.1" + "dotenv": "^17.3.1", + "express": "^5.2.1", + "pg": "^8.20.0" }, "devDependencies": { - "nodemon": "^3.1.14", - "jest": "^30.3.0" + "jest": "^30.3.0", + "nodemon": "^3.1.14" } } diff --git a/backend/scripts/import_cities.js b/backend/scripts/import_cities.js new file mode 100644 index 0000000..7cf53ae --- /dev/null +++ b/backend/scripts/import_cities.js @@ -0,0 +1,95 @@ +const { Pool } = require('pg'); +const { execSync } = require('child_process'); +const fs = require('fs'); +const readline = require('readline'); +require('dotenv').config(); + +const DATA_URL = 'https://download.geonames.org/export/dump/cities5000.zip'; +const ZIP_FILE = '/tmp/cities.zip'; +const TXT_FILE = '/tmp/cities5000.txt'; + +async function importGeoNames() { + const pool = new Pool({ + connectionString: process.env.DATABASE_URL || 'postgresql://line_of_sight:line_of_sight_pass@postgres:5432/line_of_sight' + }); + + try { + console.log('Downloading GeoNames cities5000 (Pop > 5000)...'); + execSync(`wget -q ${DATA_URL} -O ${ZIP_FILE}`); + + console.log('Extracting data...'); + execSync(`unzip -o ${ZIP_FILE} -d /tmp`); + + console.log('Connecting to database...'); + const client = await pool.connect(); + + // Ensure table is clean + await client.query('TRUNCATE TABLE cities'); + + console.log('Starting stream import...'); + + const fileStream = fs.createReadStream(TXT_FILE); + const rl = readline.createInterface({ + input: fileStream, + crlfDelay: Infinity + }); + + let batch = []; + const batchSize = 500; + let count = 0; + + for await (const line of rl) { + const parts = line.split('\t'); + if (parts.length < 15) continue; + + const name = parts[1]; // name + const lat = parseFloat(parts[4]); + const lon = parseFloat(parts[5]); + const country = parts[8]; // country code + const population = parseInt(parts[14]) || 0; + + batch.push({ name, lat, lon, country, population }); + + if (batch.length >= batchSize) { + await insertBatch(client, batch); + count += batch.length; + if (count % 5000 === 0) console.log(`Imported ${count} cities...`); + batch = []; + } + } + + if (batch.length > 0) { + await insertBatch(client, batch); + count += batch.length; + } + + console.log(`SUCCESS: Imported ${count} cities and towns.`); + client.release(); + + } catch (err) { + console.error('ERROR during import:', err); + } finally { + // Cleanup + if (fs.existsSync(ZIP_FILE)) fs.unlinkSync(ZIP_FILE); + if (fs.existsSync(TXT_FILE)) fs.unlinkSync(TXT_FILE); + await pool.end(); + } +} + +async function insertBatch(client, batch) { + const queryParts = []; + const values = []; + + batch.forEach((city, index) => { + const base = index * 5; + queryParts.push(`($${base + 1}, $${base + 2}, $${base + 3}, ST_SetSRID(ST_MakePoint($${base + 4}, $${base + 5}), 4326)::geography)`); + values.push(city.name, city.population, city.country, city.lon, city.lat); + }); + + await client.query( + `INSERT INTO cities (name, population, country, geom) VALUES ${queryParts.join(',')}`, + values + ); +} + +importGeoNames(); diff --git a/frontend/package-lock.json b/frontend/package-lock.json index dcade21..4c991a5 100644 --- a/frontend/package-lock.json +++ b/frontend/package-lock.json @@ -8,6 +8,7 @@ "name": "line-of-sight-frontend", "version": "1.0.0", "dependencies": { + "@turf/turf": "^7.3.4", "axios": "^1.7.9", "maplibre-gl": "^5.20.1", "react": "^19.2.1", @@ -1478,6 +1479,1937 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"node_modules/symbol-tree": { "version": "3.2.4", "resolved": "https://registry.npmjs.org/symbol-tree/-/symbol-tree-3.2.4.tgz", @@ -2975,6 +5108,30 @@ "integrity": "sha512-5WJ2SqFsv4G2Dwi7ZFVRnz6b2H1od39QME1lc2y5Ew3eWiZMAeqOAfWpRP9jHvhUl881406QtZTODvjttJs+ew==", "dev": true }, + "node_modules/topojson-client": { + "version": "3.1.0", + "resolved": "https://registry.npmjs.org/topojson-client/-/topojson-client-3.1.0.tgz", + "integrity": "sha512-605uxS6bcYxGXw9qi62XyrV6Q3xwbndjachmNxu8HWTtVPxZfEJN9fd/SZS1Q54Sn2y0TMyMxFj/cJINqGHrKw==", + "dependencies": { + "commander": "2" + }, + "bin": { + "topo2geo": "bin/topo2geo", + "topomerge": "bin/topomerge", + "topoquantize": "bin/topoquantize" + } + }, + "node_modules/topojson-server": { + "version": "3.0.1", + "resolved": "https://registry.npmjs.org/topojson-server/-/topojson-server-3.0.1.tgz", + "integrity": "sha512-/VS9j/ffKr2XAOjlZ9CgyyeLmgJ9dMwq6Y0YEON8O7p/tGGk+dCWnrE03zEdu7i4L7YsFZLEPZPzCvcB7lEEXw==", + "dependencies": { + "commander": "2" + }, + "bin": { + "geo2topo": "bin/geo2topo" + } + }, "node_modules/tough-cookie": { "version": "6.0.1", "resolved": "https://registry.npmjs.org/tough-cookie/-/tough-cookie-6.0.1.tgz", @@ -2999,6 +5156,11 @@ "node": ">=20" } }, + "node_modules/tslib": { + "version": "2.8.1", + "resolved": "https://registry.npmjs.org/tslib/-/tslib-2.8.1.tgz", + "integrity": "sha512-oJFu94HQb+KVduSUQL7wnpmqnfmLsOA/nAh6b6EH0wCEoK0/mPeXU6c3wKDV83MkOuHPRHtSXKKU99IBazS/2w==" + }, "node_modules/undici": { "version": "7.24.4", "resolved": "https://registry.npmjs.org/undici/-/undici-7.24.4.tgz", diff --git a/frontend/package.json b/frontend/package.json index 7d67f60..af076f1 100644 --- a/frontend/package.json +++ b/frontend/package.json @@ -3,6 +3,7 @@ "version": "1.0.0", "private": true, "dependencies": { + "@turf/turf": "^7.3.4", "axios": "^1.7.9", "maplibre-gl": "^5.20.1", "react": "^19.2.1", diff --git a/frontend/src/App.jsx b/frontend/src/App.jsx index 23a4049..18ec4dc 100644 --- a/frontend/src/App.jsx +++ b/frontend/src/App.jsx @@ -1,6 +1,7 @@ import React, { useState, useEffect, useRef } from 'react'; import maplibregl from 'maplibre-gl'; import 'maplibre-gl/dist/maplibre-gl.css'; +import * as turf from '@turf/turf'; import apiService from './services/api'; import './styles/App.css'; @@ -8,33 +9,77 @@ const APP = () => { const mapContainerRef = useRef(null); const mapRef = useRef(null); const startMarkerRef = useRef(null); + const cityMarkersRef = useRef([]); + const animationRef = useRef(null); + const popupRef = useRef(null); const [selectedPoint, setSelectedPoint] = useState({ lat: 51.5074, lon: -0.1278 }); const [direction, setDirection] = useState(45); const [lineOfSightData, setLineOfSightData] = useState(null); const [loading, setLoading] = useState(false); + const [isPlaying, setIsPlaying] = useState(false); + const [flightSpeed, setFlightSpeed] = useState(1.0); const [mapStyle, setMapStyle] = useState('light'); // 'light' or 'dark' const [tolerance, setTolerance] = useState(50); + const [selectedCity, setSelectedCity] = useState(null); + const [isLocked, setIsLocked] = useState(false); useEffect(() => { - // Initialize MapLibre map + // Initialize MapLibre map - ONLY ONCE mapRef.current = new maplibregl.Map({ container: mapContainerRef.current, style: getMapStyle(mapStyle), center: [-0.1278, 51.5074], // London - zoom: 3, - pitch: 0 + zoom: 2, + pitch: 0, + projection: 'globe' // Enable 3D Globe }); - mapRef.current.on('load', () => { - console.log('Map loaded successfully'); - - // Initialize start marker - startMarkerRef.current = new maplibregl.Marker({ color: '#FF6B6B' }) - .setLngLat([selectedPoint.lon, selectedPoint.lat]) - .addTo(mapRef.current); + mapRef.current.on('style.load', () => { + console.log('Map style loaded or changed'); + setupMapLayers(); + }); - // Initialize preview line source and layer - mapRef.current.addSource('preview-line', { + return () => { + if (animationRef.current) cancelAnimationFrame(animationRef.current); + if (mapRef.current) mapRef.current.remove(); + }; + }, []); // Run only once + + const setupMapLayers = () => { + const map = mapRef.current; + if (!map) return; + + // 1. Add atmosphere/sky effects + map.setSky({ + 'sky-color': '#199EF3', + 'sky-horizon-blend': 0.5, + 'horizon-color': '#ffffff', + 'horizon-fog-blend': 0.5, + 'fog-color': '#add8e6', + 'fog-ground-blend': 0.5 + }); + + // 2. Add terrain source for 3D effect + if (!map.getSource('terrain')) { + map.addSource('terrain', { + type: 'raster-dem', + tiles: ['https://s3.amazonaws.com/elevation-tiles-prod/terrarium/{z}/{x}/{y}.png'], + encoding: 'terrarium', + tileSize: 256, + maxzoom: 15 + }); + } + map.setTerrain({ source: 'terrain', exaggeration: 1.5 }); + + // 3. Initialize start marker + if (startMarkerRef.current) startMarkerRef.current.remove(); + startMarkerRef.current = new maplibregl.Marker({ color: '#FF6B6B' }) + .setLngLat([selectedPoint.lon, selectedPoint.lat]) + .addTo(map); + + // 4. Initialize preview line source and layer + if (!map.getSource('preview-line')) { + map.addSource('preview-line', { type: 'geojson', data: { type: 'Feature', @@ -45,7 +90,7 @@ const APP = () => { } }); - mapRef.current.addLayer({ + map.addLayer({ id: 'preview-line', type: 'line', source: 'preview-line', @@ -55,11 +100,28 @@ const APP = () => { 'line-dasharray': [2, 2] } }); + } + // 5. Restore results line and city markers if they existed + if (lineOfSightData) { + renderLineOnMap(lineOfSightData); + // Hide preview if results are shown + if (map.getLayer('preview-line')) { + map.setLayoutProperty('preview-line', 'visibility', 'none'); + } + } else { updatePreviewLine(selectedPoint, direction); - }); + } + }; + + // Separate effect for the click listener that respects isLocked + useEffect(() => { + if (!mapRef.current) return; + + const handleClick = (e) => { + // Don't allow moving start point if locked + if (isLocked) return; - mapRef.current.on('click', (e) => { const { lng, lat } = e.lngLat; setSelectedPoint({ lat, lon: lng }); @@ -67,33 +129,329 @@ const APP = () => { startMarkerRef.current.setLngLat([lng, lat]); } - // Clear previous final line when moving start point + // Clear previous final results when moving start point + clearCityMarkers(); if (mapRef.current.getSource('line-of-sight')) { mapRef.current.removeLayer('line-of-sight'); mapRef.current.removeSource('line-of-sight'); } + }; + + mapRef.current.on('click', handleClick); + return () => { + if (mapRef.current) mapRef.current.off('click', handleClick); + }; + }, [isLocked]); + + const handleStartAgain = () => { + if (animationRef.current) { + cancelAnimationFrame(animationRef.current); + setIsPlaying(false); + setFlightSpeed(1.0); + } + + if (popupRef.current) { + popupRef.current.remove(); + popupRef.current = null; + } + + setIsLocked(false); + setLineOfSightData(null); + setSelectedCity(null); + clearCityMarkers(); + + if (mapRef.current) { + if (mapRef.current.getSource('line-of-sight')) { + mapRef.current.removeLayer('line-of-sight'); + mapRef.current.removeSource('line-of-sight'); + } + // Re-enable preview line if it was hidden + if (mapRef.current.getLayer('preview-line')) { + mapRef.current.setLayoutProperty('preview-line', 'visibility', 'visible'); + } + + // Reset map pitch and zoom + mapRef.current.flyTo({ + center: [selectedPoint.lon, selectedPoint.lat], + zoom: 3, + pitch: 0, + bearing: 0 + }); + } + }; + + const clearCityMarkers = () => { + if (cityMarkersRef.current) { + cityMarkersRef.current.forEach(marker => marker.remove()); + cityMarkersRef.current = []; + } + }; + + const getCountryName = (code) => { + try { + const regionNames = new Intl.DisplayNames(['en'], { type: 'region' }); + return regionNames.of(code.toUpperCase()) || code; + } catch (e) { + return code; + } + }; + + const showCityPopup = (city) => { + if (!mapRef.current) return; + + if (popupRef.current) popupRef.current.remove(); + + const popupNode = document.createElement('div'); + popupNode.className = 'map-info-popup'; + const countryName = getCountryName(city.country); + + popupNode.innerHTML = ` +
+ ${city.name}, ${countryName} +
+
+

Population: ${city.population.toLocaleString()}

+

Dist. from start: ${city.distance_km} km

+

Deviation: ${city.off_line_km} km

+
+ `; + + popupRef.current = new maplibregl.Popup({ + closeButton: true, + closeOnClick: false, + maxWidth: '300px', + offset: [0, -20] + }) + .setLngLat([city.lon, city.lat]) + .setDOMContent(popupNode) + .addTo(mapRef.current); + + popupRef.current.on('close', () => { + setSelectedCity(null); + }); + }; + + const startFlyOver = () => { + if (!lineOfSightData || !mapRef.current) return; + + if (isPlaying) { + if (animationRef.current) cancelAnimationFrame(animationRef.current); + setIsPlaying(false); + setFlightSpeed(1.0); + return; + } + + setIsPlaying(true); + setSelectedCity(null); + if (popupRef.current) popupRef.current.remove(); + + const coordinates = lineOfSightData.line_coordinates.map(c => [c.lon, c.lat]); + const route = turf.lineString(coordinates); + const routeDistance = turf.length(route); + const startTime = performance.now(); + + let lastNearestCityId = null; + let lastFetchedDist = 0; + let currentProgress = 0; + let lastTimestamp = performance.now(); + let currentSpeedMultiplier = 1.0; + let frameCount = 0; + + async function animate(currentTime) { + if (!mapRef.current) return; + + const deltaTime = currentTime - lastTimestamp; + lastTimestamp = currentTime; + + const baseKmPerMs = 0.1; // 100km per second + + const pathPoints = lineOfSightData.line_coordinates; + const pointIndex = Math.min( + Math.floor((currentProgress / routeDistance) * pathPoints.length), + pathPoints.length - 1 + ); + const isOverWater = pathPoints[pointIndex]?.is_over_water; + + // Predictive land detection (look ahead 2000km) + let futureIsOverWater = true; + const lookAheadDistance = 2000; + const lookAheadSteps = 10; + for (let i = 1; i <= lookAheadSteps; i++) { + const checkDist = currentProgress + (lookAheadDistance * i) / lookAheadSteps; + const checkIndex = Math.min( + Math.floor((checkDist / routeDistance) * pathPoints.length), + pathPoints.length - 1 + ); + if (pathPoints[checkIndex] && !pathPoints[checkIndex].is_over_water) { + futureIsOverWater = false; + break; + } + } + + const targetMultiplier = (isOverWater && futureIsOverWater) ? 20.0 : 1.0; + const acceleration = 0.005; + + if (currentSpeedMultiplier < targetMultiplier) { + currentSpeedMultiplier = Math.min(currentSpeedMultiplier + acceleration * deltaTime, targetMultiplier); + } else if (currentSpeedMultiplier > targetMultiplier) { + currentSpeedMultiplier = Math.max(currentSpeedMultiplier - acceleration * deltaTime, targetMultiplier); + } + + frameCount++; + if (frameCount % 10 === 0) { + setFlightSpeed(currentSpeedMultiplier); + } + + currentProgress += baseKmPerMs * deltaTime * currentSpeedMultiplier; + + const phase = Math.min(currentProgress / routeDistance, 1); + + if (phase >= 1) { + setIsPlaying(false); + setFlightSpeed(1.0); + return; + } + + const eye = turf.along(route, currentProgress).geometry.coordinates; + const target = turf.along(route, Math.min(currentProgress + 10, routeDistance)).geometry.coordinates; + + const bearing = turf.bearing(turf.point(eye), turf.point(target)); + + mapRef.current.jumpTo({ + center: eye, + zoom: 6, + pitch: 65, + bearing: bearing + }); + + if (currentProgress - lastFetchedDist > 2000) { + lastFetchedDist = currentProgress; + try { + const response = await apiService.getLineOfSight( + eye[1], eye[0], bearing, tolerance + ); + + if (response.data.success) { + const newCities = response.data.data.conurbations; + setLineOfSightData(prev => { + const existingIds = new Set(prev.conurbations.map(c => c.id)); + const uniqueNewCities = newCities.filter(c => !existingIds.has(c.id)); + const adjustedCities = uniqueNewCities.map(c => ({ + ...c, + distance_km: Math.round(c.distance_km + currentProgress) + })); + const updatedData = { + ...prev, + conurbations: [...prev.conurbations, ...adjustedCities].sort((a, b) => a.distance_km - b.distance_km) + }; + addMarkersToMap(adjustedCities, prev.conurbations.length); + return updatedData; + }); + } + } catch (e) { + console.error('Error fetching more cities during flight:', e); + } + } + + const nearestCity = lineOfSightData.conurbations.find(city => + Math.abs(city.distance_km - currentProgress) < 100 + ); + + if (nearestCity && nearestCity.id !== lastNearestCityId) { + lastNearestCityId = nearestCity.id; + setSelectedCity(nearestCity); + showCityPopup(nearestCity); + } + + animationRef.current = requestAnimationFrame(animate); + } + + animationRef.current = requestAnimationFrame(animate); + }; + + const addMarkersToMap = (cities, startIndex = 0) => { + const map = mapRef.current; + if (!map) return; + + cities.forEach((city, index) => { + const displayIndex = startIndex + index + 1; + + const el = document.createElement('div'); + el.className = 'city-marker'; + el.innerHTML = ` +
${displayIndex}
+
+
${city.name}
+
${(city.population / 1000).toFixed(0)}k
+ `; + + const marker = new maplibregl.Marker(el) + .setLngLat([city.lon, city.lat]) + .addTo(map); + + marker.getElement().addEventListener('click', (e) => { + e.stopPropagation(); + setSelectedCity(city); + showCityPopup(city); + }); + + cityMarkersRef.current.push(marker); + }); + }; + + const renderLineOnMap = (data) => { + const map = mapRef.current; + if (!map) return; + + clearCityMarkers(); + if (map.getSource('line-of-sight')) { + map.removeLayer('line-of-sight'); + map.removeSource('line-of-sight'); + } + + map.addSource('line-of-sight', { + type: 'geojson', + data: { + type: 'Feature', + properties: {}, + geometry: { + type: 'LineString', + coordinates: data.line_coordinates.map(coord => [coord.lon, coord.lat]) + } + } }); - return () => { - mapRef.current.remove(); - }; - }, []); + map.addLayer({ + id: 'line-of-sight', + type: 'line', + source: 'line-of-sight', + layout: { + 'line-join': 'round', + 'line-cap': 'round' + }, + paint: { + 'line-color': '#FF6B6B', + 'line-width': 4, + 'line-opacity': 0.8 + } + }); - useEffect(() => { - // Update preview whenever point or direction changes - if (mapRef.current && mapRef.current.isStyleLoaded()) { - updatePreviewLine(selectedPoint, direction); - } - }, [selectedPoint, direction]); + addMarkersToMap(data.conurbations); + + const bounds = new maplibregl.LngLatBounds(); + data.line_coordinates.forEach(coord => { + bounds.extend([coord.lon, coord.lat]); + }); + map.fitBounds(bounds, { padding: 50 }); + }; const updatePreviewLine = (point, bearing) => { const map = mapRef.current; if (!map || !map.getSource('preview-line')) return; - // Generate 50 points along a 5000km great circle path for a smooth curve const path = []; const steps = 50; - const totalDistance = 5000; + const totalDistance = 20000; for (let i = 0; i <= steps; i++) { const dist = (totalDistance * i) / steps; @@ -109,9 +467,8 @@ const APP = () => { }); }; - // Helper to calculate destination point given start, bearing, and distance (km) const calculateDestination = (lat, lon, bearing, distance) => { - const R = 6371; // Earth's radius in km + const R = 6371; const brng = (bearing * Math.PI) / 180; const φ1 = (lat * Math.PI) / 180; const λ1 = (lon * Math.PI) / 180; @@ -135,20 +492,42 @@ const APP = () => { }; useEffect(() => { - // Update map style when toggle changes if (mapRef.current) { mapRef.current.setStyle(getMapStyle(mapStyle)); } }, [mapStyle]); const getMapStyle = (style) => { + if (style === 'satellite') { + return { + version: 8, + sources: { + 'esri-satellite': { + type: 'raster', + tiles: ['https://services.arcgisonline.com/ArcGIS/rest/services/World_Imagery/MapServer/tile/{z}/{y}/{x}'], + tileSize: 256, + attribution: 'Tiles © Esri — Source: Esri, i-cubed, USDA, USGS, AEX, GeoEye, Getmapping, Aerogrid, IGN, IGP, UPR-EGP, and the GIS User Community' + } + }, + layers: [ + { + id: 'satellite-layer', + type: 'raster', + source: 'esri-satellite', + minzoom: 0, + maxzoom: 20 + } + ] + }; + } return style === 'dark' ? 'https://demotiles.maplibre.org/style.json' - : 'https://demotiles.maplibre.org/style.json'; // Using same for now, can be customized + : 'https://demotiles.maplibre.org/style.json'; }; const handleShowLineOfSight = async () => { setLoading(true); + setSelectedCity(null); try { const response = await apiService.getLineOfSight( selectedPoint.lat, @@ -157,8 +536,14 @@ const APP = () => { tolerance ); - setLineOfSightData(response.data); - renderLineOnMap(response.data); + setLineOfSightData(response.data.data); + setIsLocked(true); + + if (mapRef.current && mapRef.current.getLayer('preview-line')) { + mapRef.current.setLayoutProperty('preview-line', 'visibility', 'none'); + } + + renderLineOnMap(response.data.data); } catch (error) { console.error('Error fetching line of sight:', error); } finally { @@ -166,81 +551,13 @@ const APP = () => { } }; - const renderLineOnMap = (data) => { - const map = mapRef.current; - if (!map) return; - - // Clear existing line - if (map.getSource('line-of-sight')) { - map.removeLayer('line-of-sight'); - map.removeSource('line-of-sight'); - } - - // Add line source - map.addSource('line-of-sight', { - type: 'geojson', - data: { - type: 'Feature', - properties: {}, - geometry: { - type: 'LineString', - coordinates: data.line_coordinates.map(coord => [coord.lon, coord.lat]) - } - } - }); - - // Add line layer - map.addLayer({ - id: 'line-of-sight', - type: 'line', - source: 'line-of-sight', - layout: { - 'line-join': 'round', - 'line-cap': 'round' - }, - paint: { - 'line-color': '#FF6B6B', - 'line-width': 4, - 'line-opacity': 0.8 - } - }); - - // Add city markers - data.conurbations.forEach((city, index) => { - const markerId = `city-${index}`; - - // Create marker element - const el = document.createElement('div'); - el.className = 'city-marker'; - el.innerHTML = ` -
-
${city.name}
-
${(city.population / 1000000).toFixed(1)}M
- `; - - // Add marker to map - new maplibregl.Marker(el) - .setLngLat([city.lon, city.lat]) - .setPopup(new maplibregl.Popup().setHTML( - `${city.name}
Population: ${city.population.toLocaleString()}
Distance: ${city.distance_km} km` - )) - .addTo(map); - }); - - // Fit bounds to show line - const bounds = new maplibregl.LngLatBounds(); - data.line_coordinates.forEach(coord => { - bounds.extend([coord.lon, coord.lat]); - }); - map.fitBounds(bounds, { padding: 50 }); - }; - return (
-
+
+
-
+

Line of Sight Settings

@@ -255,6 +572,7 @@ const APP = () => { min="0" max="360" value={direction} + disabled={isLocked} onChange={(e) => setDirection(parseInt(e.target.value))} /> {direction}° @@ -265,6 +583,7 @@ const APP = () => { setTolerance(parseInt(e.target.value))} min="10" max="200" @@ -274,45 +593,79 @@ const APP = () => {
- - + + +
- + {!isLocked ? ( + + ) : ( + <> + + + + )}
{lineOfSightData && (

Conurbations Found ({lineOfSightData.conurbations.length})

+

Click a city for details

- + - {lineOfSightData.conurbations.slice(0, 10).map((city, index) => ( - + {lineOfSightData.conurbations.map((city, index) => ( + { + setSelectedCity(city); + showCityPopup(city); + mapRef.current.flyTo({ center: [city.lon, city.lat], zoom: 8 }); + }} + className={selectedCity?.id === city.id ? 'selected-row' : ''} + > - - + + ))}
# City PopulationDistanceDist.
{index + 1} {city.name}{(city.population / 1000000).toFixed(1)}M{city.distance_km} km{(city.population / 1000).toFixed(0)}k{city.distance_km}km
- {lineOfSightData.conurbations.length > 10 && ( -

... and {lineOfSightData.conurbations.length - 10} more cities

- )}
)} diff --git a/frontend/src/styles/App.css b/frontend/src/styles/App.css index 8a8bac3..4d635e2 100644 --- a/frontend/src/styles/App.css +++ b/frontend/src/styles/App.css @@ -3,6 +3,7 @@ height: 100vh; width: 100vw; overflow: hidden; + position: relative; } .map-container { @@ -19,6 +20,7 @@ box-shadow: -2px 0 10px rgba(0,0,0,0.1); overflow-y: auto; z-index: 2; + position: relative; } .control-group { @@ -62,6 +64,7 @@ .setting-row span { font-weight: bold; color: #2c3e50; + min-width: 40px; } .setting-row button { @@ -78,6 +81,12 @@ background: #e9ecef; } +.setting-row button.active-style { + background: #34495e; + color: white; + border-color: #2c3e50; +} + .action-btn { width: 100%; padding: 12px; @@ -101,18 +110,66 @@ cursor: not-allowed; } +.action-btn-secondary { + width: 100%; + padding: 12px; + background: #34495e; + color: white; + border: none; + border-radius: 6px; + font-size: 16px; + font-weight: bold; + cursor: pointer; + transition: background 0.3s; + margin-top: 10px; +} + +.action-btn-secondary:hover { + background: #2c3e50; +} + +.disabled-controls { + opacity: 0.8; +} + +.disabled-controls input { + pointer-events: none; + cursor: not-allowed; +} + +/* Allow action buttons and settings buttons to work even when locked */ +.action-btn, .action-btn-secondary, .setting-row button { + pointer-events: auto !important; +} + +.results-panel table thead { + position: sticky; + top: 0; + z-index: 1; +} + .results-panel { background: #f8f9fa; padding: 15px; border-radius: 8px; margin-bottom: 20px; + max-height: 450px; + overflow-y: auto; + border: 1px solid #eee; } .results-panel h3 { margin-top: 0; color: #2c3e50; font-size: 16px; - margin-bottom: 15px; + margin-bottom: 5px; +} + +.results-panel .hint { + font-size: 11px; + color: #7f8c8d; + margin-bottom: 10px; + font-style: italic; } .results-panel table { @@ -124,21 +181,114 @@ .results-panel th { background: #34495e; color: white; - padding: 10px; + padding: 8px 4px; text-align: left; } .results-panel td { - padding: 8px; + padding: 8px 4px; border-bottom: 1px solid #ddd; + cursor: pointer; } .results-panel tr:nth-child(even) { - background: #f8f9fa; + background: #fdfdfd; } .results-panel tr:hover { - background: #e9ecef; + background: #ecf0f1; +} + +.results-panel tr.selected-row { + background: #d5e8d4 !important; + font-weight: bold; +} + +.info-panel-modal { + position: absolute; + top: 20px; + left: 20px; + width: 280px; + background: white; + border-radius: 8px; + box-shadow: 0 4px 15px rgba(0,0,0,0.3); + z-index: 1000; + animation: slideIn 0.3s ease-out; +} + +@keyframes slideIn { + from { opacity: 0; transform: translateX(-20px); } + to { opacity: 1; transform: translateX(0); } +} + +.info-panel-content { + padding: 20px; + position: relative; +} + +.info-panel-content h2 { + margin-top: 0; + margin-bottom: 15px; + font-size: 18px; + color: #2c3e50; + border-bottom: 2px solid #4CAF50; + padding-bottom: 8px; +} + +.close-btn { + position: absolute; + top: 10px; + right: 10px; + background: none; + border: none; + font-size: 24px; + cursor: pointer; + color: #95a5a6; +} + +.close-btn:hover { + color: #34495e; +} + +.info-grid { + display: flex; + flex-direction: column; + gap: 12px; + margin-bottom: 20px; +} + +.info-item { + display: flex; + flex-direction: column; +} + +.info-item label { + font-size: 11px; + color: #7f8c8d; + text-transform: uppercase; + letter-spacing: 0.5px; +} + +.info-item span { + font-size: 14px; + color: #2c3e50; + font-weight: 500; +} + +.action-btn-small { + width: 100%; + padding: 8px; + background: #3498db; + color: white; + border: none; + border-radius: 4px; + font-size: 14px; + cursor: pointer; + transition: background 0.2s; +} + +.action-btn-small:hover { + background: #2980b9; } .more-info { @@ -177,6 +327,25 @@ flex-direction: column; align-items: center; font-family: sans-serif; + z-index: 100; + cursor: pointer; + pointer-events: auto !important; +} + +.marker-number { + background: #2c3e50; + color: white; + width: 18px; + height: 18px; + border-radius: 50%; + display: flex; + align-items: center; + justify-content: center; + font-size: 10px; + font-weight: bold; + margin-bottom: -4px; + border: 1px solid white; + z-index: 2; } .marker-dot { @@ -186,6 +355,7 @@ border: 2px solid white; border-radius: 50%; box-shadow: 0 2px 4px rgba(0,0,0,0.3); + z-index: 1; } .marker-label { @@ -209,6 +379,38 @@ white-space: nowrap; } +.map-info-popup { + padding: 5px; + font-family: sans-serif; +} + +.popup-header { + border-bottom: 1px solid #eee; + padding-bottom: 5px; + margin-bottom: 5px; + color: #2c3e50; + font-size: 14px; +} + +.popup-body { + font-size: 12px; + color: #666; +} + +.popup-body p { + margin: 3px 0; +} + +.maplibregl-popup { + z-index: 2000 !important; +} + +.maplibregl-popup-content { + border-radius: 8px !important; + box-shadow: 0 4px 15px rgba(0,0,0,0.3) !important; + padding: 15px !important; +} + @media (max-width: 768px) { .app-container { flex-direction: column; @@ -223,4 +425,12 @@ .map-container { height: 60vh; } + + .info-panel-modal { + left: 10px; + right: 10px; + width: auto; + bottom: 20px; + top: auto; + } }