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"registry+https://github.com/rust-lang/crates.io-index" +checksum = "09d525d2ba30eeb3297665bd434a54297e4170c7f1a44cad4ef58095b4cd2028" + +[[package]] +name = "windows_x86_64_msvc" +version = "0.42.0" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "f40009d85759725a34da6d89a94e63d7bdc50a862acf0dbc7c8e488f1edcb6f5" diff --git a/Cargo.toml b/Cargo.toml new file mode 100644 index 0000000..a1cb7c8 --- /dev/null +++ b/Cargo.toml @@ -0,0 +1,13 @@ +[package] +name = "iss-tui" +version = "0.1.0" +edition = "2021" + +# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html + +[dependencies] +chrono = "0.4.23" +crossterm = "0.25.0" +libm = "0.2.6" +sgp4 = "0.8.2" +tui = "0.19.0" diff --git a/src/main.rs b/src/main.rs new file mode 100644 index 0000000..764d7b3 --- /dev/null +++ b/src/main.rs @@ -0,0 +1,292 @@ +use crossterm::{ + event::{self, DisableMouseCapture, EnableMouseCapture, Event, KeyCode}, + execute, + terminal::{disable_raw_mode, enable_raw_mode, EnterAlternateScreen, LeaveAlternateScreen}, cursor::position, +}; +use sgp4::Prediction; +use std::{ + error::Error, + io, + time::{Duration, Instant}, +}; +use chrono::{prelude::*}; +use libm::*; +use tui::{ + backend::{Backend, CrosstermBackend}, + layout::{Constraint, Direction, Layout, Rect}, + style::{Color, Style}, + text::Span, + widgets::{ + canvas::{Canvas, Map, MapResolution, Line, Points}, + Block, Borders, + }, + Frame, Terminal, +}; +const TWOPI: f64 = 2.0*std::f64::consts::PI; +const DEG2RAD: f64 = 1.0 / 360.0 * TWOPI; +const RAD2DEG: f64 = 1.0 / TWOPI * 360.0; + +fn jd_to_gmst(jd_: f64) ->f64 { + let twopi = 2.0*std::f64::consts::PI; + let ut = (jd_ + 0.5).fract(); + let jd = jd_ - ut; + let tu = (jd - 2451545.0)/36525.; + let mut gmst = 24110.54841 + tu * (8640184.812866 + tu * (0.093104 - tu * 6.2e-6)); + gmst = (gmst + 86400.0*1.00273790934*ut) % 86400.0; + ((twopi * gmst/86400.0) + twopi) % twopi +} +fn wgs84_to_eci(geodetic_lat: f64, geodetic_lon: f64, julian_date: f64) -> (f64, f64, f64) { + let a = 6378.137; // km + let f = 1. / 298.257223563; + let alt = 0.; + + let theta = (geodetic_lon + jd_to_gmst(julian_date) + TWOPI) % TWOPI; + let c = 1. / (1. + f * (f-2.) * sin(geodetic_lat).powi(2)).sqrt(); + let s = (1. - f).powi(2) * c; + + let achcp = (a * c + alt)*cos(geodetic_lat); + let x = achcp * cos(theta); + let y = achcp * sin(theta); + let z = (a * s + alt) * sin(geodetic_lat); + + (x, y, z) +} +fn eci_to_wgs84(x:f64, y:f64, z:f64, jd:f64) -> (f64, f64, f64) { + let actan: f64; + if x == 0. { + if y > 0. {actan = std::f64::consts::PI/2.;} + else {actan = 3. * std::f64::consts::PI / 2.;} + } else if x > 0. {actan = atan(y/x);} + else {actan = std::f64::consts::PI + atan(y / x);} + + let mut lon = (actan - jd_to_gmst(jd) + TWOPI) % TWOPI; + + let a = 6378.137; // km + let f: f64 = 1. / 298.257223563; + let e2 = 2. * f - f.powi(2); + let r = (x*x + y*y).sqrt(); + let mut c = 0.0; + + let mut approx_lat = atan(z / r); + let mut lat = approx_lat + TWOPI; //initialize to value not equal to approx_lat + while (lat - approx_lat).abs() > 1E-10 { + lat = approx_lat; + c = 1. / (1. - e2 * sin(lat).powi(2)).sqrt(); + approx_lat =atan((z + a * c* e2 * sin(lat)) / r); + } + let height = (r / cos(lat)) - a * c; + + if lon > std::f64::consts::PI { + lon -= TWOPI; + } + + (lat, lon, height) +} + +fn to_julian_day(t: &DateTime) -> f64 { + let dur: chrono::Duration = *t - Utc.with_ymd_and_hms(2000, 1, 1, 12, 0, 0).single().unwrap(); + dur.num_seconds() as f64 / (24. * 60. * 60.) + 2451545.0 +} + +struct App { + show_lines: bool, + show_points: bool, + gpoints: Vec<(f64, f64)>, + sat_x: f64, + sat_y: f64, + ts: f64, + elements: sgp4::Elements, + constants: sgp4::Constants, + epoch_jd: f64, +} +impl App { + fn new(elements: sgp4::Elements, constants: sgp4::Constants) -> App { + App { + show_lines: false, + show_points: true, + gpoints: vec![], + sat_x: 0., + sat_y: 0., + ts: 0., + epoch_jd: to_julian_day(&DateTime::::from_utc(elements.datetime, Utc)), + elements, + constants, + } + } + + fn on_tick(&mut self) { + // + let now = Utc::now(); + let dt = DateTime::::from_utc(self.elements.datetime, Utc); + //let now = dt + chrono::Duration::days(2); + //let min_ms_acc = (now - dt).to_std()?.as_secs_f64() / 60.; + let min = (now - dt).num_seconds() as f64 / 60.; + self.gpoints.clear(); + match self.constants.propagate(min) { + Ok(prediction) => { + let (lat, lon, _alt) = eci_to_wgs84(prediction.position[0], prediction.position[1], prediction.position[2], to_julian_day(&now)); + self.sat_x = lon*RAD2DEG; + self.sat_y = lat*RAD2DEG; + //self.gpoints.push((self.sat_x, self.sat_y)); + }, + Err(_e) => {}, + } + let step: i64 = 5; + for i in 0..24 { + match self.constants.propagate((i * step) as f64 + min) { + Ok(prediction) => { + let (y, x, _z) = eci_to_wgs84(prediction.position[0], prediction.position[1], prediction.position[2], to_julian_day(&(now + chrono::Duration::minutes(i * step as i64)))); + self.gpoints.push((x*RAD2DEG, y*RAD2DEG)); + }, + Err(_e) => { + //self.gpoints.push(self.gpoints.last().unwrap_or(&(0.,0.)).clone()); + } + } + } + } +} + +fn main() -> Result<(), Box> { + let text = "ISS (ZARYA) +1 25544U 98067A 23003.52502237 .00016767 00000+0 30219-3 0 9998 +2 25544 51.6453 64.1711 0005004 218.5032 238.7671 15.49892242376259".to_owned(); + let data: Vec<&str> = text.split("\n").map(|s| s.trim()).collect(); + assert!(data.len() >= 3); + let elements = sgp4::Elements::from_tle(Some(data[0].to_owned()), data[1].as_bytes(), data[2].as_bytes()).expect("Could not parse TLE Data!"); + let constants = sgp4::Constants::from_elements(&elements).expect("Could not create constants!"); + + // setup terminal + enable_raw_mode()?; + let mut stdout = io::stdout(); + execute!(stdout, EnterAlternateScreen, EnableMouseCapture)?; + let backend = CrosstermBackend::new(stdout); + let mut terminal = Terminal::new(backend)?; + + // create app and run it + let tick_rate = Duration::from_millis(1000); + let app = App::new(elements, constants); + let res = run_app(&mut terminal, app, tick_rate); + + // restore terminal + disable_raw_mode()?; + execute!( + terminal.backend_mut(), + LeaveAlternateScreen, + DisableMouseCapture + )?; + terminal.show_cursor()?; + + if let Err(err) = res { + println!("{:?}", err) + } + + Ok(()) +} + +fn run_app( + terminal: &mut Terminal, + mut app: App, + tick_rate: Duration, +) -> io::Result<()> { + + let mut last_tick = Instant::now(); + loop { + terminal.draw(|f| ui(f, &app))?; + + let timeout = tick_rate + .checked_sub(last_tick.elapsed()) + .unwrap_or_else(|| Duration::from_secs(0)); + if event::poll(timeout)? { + if let Event::Key(key) = event::read()? { + match key.code { + KeyCode::Char('q') => { + return Ok(()); + } + KeyCode::Down => { + // + } + KeyCode::Up => { + // + } + KeyCode::Right => { + // + } + KeyCode::Left => { + // + }KeyCode::Char('l') => { + app.show_lines = !app.show_lines; + }KeyCode::Char('p') => { + app.show_points = !app.show_points; + } + _ => {} + } + } + } + + if last_tick.elapsed() >= tick_rate { + app.on_tick(); + last_tick = Instant::now(); + } + } +} + +fn ui(f: &mut Frame, app: &App) { + // let chunks = Layout::default() + // .direction(Direction::Horizontal) + // .constraints([Constraint::Percentage(50), Constraint::Percentage(50)].as_ref()) + // .split(f.size()); + + let canvas = Canvas::default() + .block(Block::default().borders(Borders::ALL).title("World")) + .paint(|ctx| { + ctx.draw(&Map { + color: Color::White, + resolution: MapResolution::High, + }); + if app.show_lines { + for (i, (x1, y1)) in app.gpoints.iter().enumerate() { + if let Some((x2, y2)) = app.gpoints.get(i+1) { + //TODO fix polar crossing + if *x1 > 90. && *x2 < -90. { + continue; + } + ctx.draw(&Line { + x1: *x1, + y1: *y1, + x2: *x2, + y2: *y2, + color: Color::Yellow, + }); + } + + } + }if app.show_points { + for (_i, (x1, y1)) in app.gpoints.iter().enumerate() { + ctx.draw(&Points { + coords: &[(*x1, *y1)], + color: Color::Red, + }); + } + } + ctx.print( + app.sat_x, + app.sat_y, + Span::styled("🛰️", Style::default().fg(Color::Yellow)), + ); + }) + .x_bounds([app.sat_x.min(-180.0), app.sat_x.max(180.0)]) + .y_bounds([-90.0, 90.0]); + + f.render_widget(canvas, f.size()); + + /*let canvas = Canvas::default() + .block(Block::default().borders(Borders::ALL).title("Pong")) + .paint(|ctx| { + ctx.draw(&app.ball); + }) + .x_bounds([10.0, 110.0]) + .y_bounds([10.0, 110.0]); + + f.render_widget(canvas, chunks[1]); */ + +} \ No newline at end of file