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feat: use the haversine formula to get distance from lightning to you

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Soph :3 2025-08-22 14:18:02 +03:00
parent 47dbbb98f5
commit 10cde9881d
1 changed files with 23 additions and 2 deletions
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25
src/main.rs
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@ -48,9 +48,25 @@ fn in_bounds(lat: f64, lon: f64, center_lat: f64, center_lon: f64, delta: f64) -
(lat >= lat_min && lat <= lat_max) && (lon >= lon_min && lon <= lon_max)
}
fn haversine_distance(lat1: f64, lon1: f64, lat2: f64, lon2: f64) -> f64 {
let r = 6371.0; // Earth radius in km
let dlat = (lat2 - lat1).to_radians();
let dlon = (lon2 - lon1).to_radians();
let a = (dlat / 2.0).sin().powi(2)
+ lat1.to_radians().cos() * lat2.to_radians().cos() * (dlon / 2.0).sin().powi(2);
let c = 2.0 * a.sqrt().atan2((1.0 - a).sqrt());
r * c
}
#[tokio::main]
async fn main() {
let args = Args::parse();
println!("Boot arguments:");
println!(" center_lat: {}", args.center_lat);
println!(" center_lon: {}", args.center_lon);
println!(" delta: {}", args.delta);
println!(" ntfy_topic: {}", args.ntfy_topic);
println!(" detector_fetch: {}", args.detector_fetch);
CryptoProvider::install_default(rustls_rustcrypto::provider())
.expect("install rustcrypto provider");
@ -155,9 +171,12 @@ async fn main() {
let lon = all.lon + all.lonc as f64;
let lat = all.lat + all.latc as f64;
if in_bounds(lat, lon, args.center_lat, args.center_lon, args.delta) {
let distance_km =
haversine_distance(args.center_lat, args.center_lon, lat, lon);
println!(
"Delay: {}ms, offset to now: {}ms, status: {}, region: {} | \n Strike at: {}, {}",
all.delay, offset_ms, all.status, all.region, lon, lat
"Delay: {}ms, offset to now: {}ms, status: {}, region: {} | \n Strike at: {}, {} | Distance to you: {:.2} km",
all.delay, offset_ms, all.status, all.region, lon, lat, distance_km
);
let mut detector_details: Vec<String> = Vec::new();
@ -199,6 +218,7 @@ async fn main() {
• Status: {}\n\
• Region: {}\n\
• Location: {:.5}, {:.5}\n\
• Distance to you: {:.2} km\n\
• Used detectors:\n{}\n\
Stay safe! 🌩️",
all.delay,
@ -206,6 +226,7 @@ async fn main() {
all.region,
lon,
lat,
distance_km,
{
if args.detector_fetch {
let shown = 2;