From eb7c1e98c9b54a2d950bed2106ebf11ea63026d1 Mon Sep 17 00:00:00 2001 From: Juergen Stuber Date: Sat, 16 Nov 2024 11:20:33 +0100 Subject: [PATCH] Add alien-message --- src/bin/alien-message/main.rs | 211 ++++++++++++++++++++++++++++++++++ 1 file changed, 211 insertions(+) create mode 100644 src/bin/alien-message/main.rs diff --git a/src/bin/alien-message/main.rs b/src/bin/alien-message/main.rs new file mode 100644 index 0000000..d5819d6 --- /dev/null +++ b/src/bin/alien-message/main.rs @@ -0,0 +1,211 @@ +use std::env::args; +use std::io::stdout; +use std::io::Write; +use std::thread::sleep; +use std::time::Duration; + +use lowdim::bb2d; +use lowdim::p2d; +use lowdim::v2d; +use lowdim::Array2d; +use lowdim::BBox2d; +use lowdim::Point2d; + +use pixelfoo_apps::color::Color; + +type Error = Box; +type Result = std::result::Result; + +const MESSAGES: &[&str] = &[ + // Arecibo message + "\ + 00000010101010000000000\ + 00101000001010000000100\ + 10001000100010010110010\ + 10101010101010100100100\ + 00000000000000000000000\ + 00000000000011000000000\ + 00000000001101000000000\ + 00000000001101000000000\ + 00000000010101000000000\ + 00000000011111000000000\ + 00000000000000000000000\ + 11000011100011000011000\ + 10000000000000110010000\ + 11010001100011000011010\ + 11111011111011111011111\ + 00000000000000000000000\ + 00010000000000000000010\ + 00000000000000000000000\ + 00001000000000000000001\ + 11111000000000000011111\ + 00000000000000000000000\ + 11000011000011100011000\ + 10000000100000000010000\ + 11010000110001110011010\ + 11111011111011111011111\ + 00000000000000000000000\ + 00010000001100000000010\ + 00000000001100000000000\ + 00001000001100000000001\ + 11111000001100000011111\ + 00000000001100000000000\ + 00100000000100000000100\ + 00010000001100000001000\ + 00001100001100000010000\ + 00000011000100001100000\ + 00000000001100110000000\ + 00000011000100001100000\ + 00001100001100000010000\ + 00010000001000000001000\ + 00100000001100000000100\ + 01000000001100000000100\ + 01000000000100000001000\ + 00100000001000000010000\ + 00010000000000001100000\ + 00001100000000110000000\ + 00100011101011000000000\ + 00100000001000000000000\ + 00100000111110000000000\ + 00100001011101001011011\ + 00000010011100100111111\ + 10111000011100000110111\ + 00000000010100000111011\ + 00100000010100000111111\ + 00100000010100000110000\ + 00100000110110000000000\ + 00000000000000000000000\ + 00111000001000000000000\ + 00111010100010101010101\ + 00111000000000101010100\ + 00000000000000101000000\ + 00000000111110000000000\ + 00000011111111100000000\ + 00001110000000111000000\ + 00011000000000001100000\ + 00110100000000010110000\ + 01100110000000110011000\ + 01000101000001010001000\ + 01000100100010010001000\ + 00000100010100010000000\ + 00000100001000010000000\ + 00000100000000010000000\ + 00000001001010000000000\ + 01111001111101001111000\ + ", +]; + +const COLORS: usize = 3; + +#[derive(Clone, Copy, Debug, PartialEq, Eq)] +enum Pixel { + Background, + Foreground, +} + +#[derive(Clone, Debug)] +struct Frame { + pixels: Array2d, +} +impl Frame { + pub fn new(bbox: BBox2d) -> Frame { + let pixels = Array2d::with(bbox, |_| Pixel::Background); + Frame { pixels } + } + pub fn bbox(&self) -> BBox2d { + self.pixels.bbox() + } + pub fn set(&mut self, pos: Point2d, pixel: Pixel) { + if self.bbox().contains(&pos) { + self.pixels[pos] = pixel; + } + } +} + +fn send(w: &mut T, frame: &Frame) -> Result<()> { + for y in frame.bbox().y_range().rev() { + for x in frame.bbox().x_range() { + let pixel = frame.pixels[p2d(x, y)]; + let color = match pixel { + Pixel::Background => Color::black(), + Pixel::Foreground => Color::new(0x99, 0xcc, 0), + }; + w.write_all(&color.rgb())?; + } + } + Ok(w.flush()?) +} + +const DEFAULT_ARG: usize = 0; + +fn main() -> Result<()> { + let args = args().collect::>(); + eprintln!("executing {}", args[0]); + + let x_size = args[1].parse::().unwrap(); + let y_size = args[2].parse::().unwrap(); + let arg = if let Some(s) = args.get(3) { + s.parse::().unwrap_or(DEFAULT_ARG) + } else { + DEFAULT_ARG + }; + eprintln!("screen size {}x{}, arg {}", x_size, y_size, arg); + + let frame_size = x_size * y_size * COLORS; + + let x_size = i64::try_from(x_size)?; + let y_size = i64::try_from(y_size)?; + + let bbox = bb2d(0..x_size as i64, 0..y_size as i64); + let mut frame = Frame::new(bbox); + + let delay = Duration::from_millis(1000); + + let raw_message = *MESSAGES.get(arg).unwrap_or(&MESSAGES[0]); + let msg = raw_message.chars().map(|c| c == '1').collect::>(); + let len = msg.len(); + eprintln!("Message has length {}", len); + + // Factor length + let mut msg_size = None; + for i in 2..len { + if len % i == 0 { + let x = i64::try_from(len / i).unwrap(); + let y = i64::try_from(i).unwrap(); + msg_size = Some(v2d(x, y)); + break; + } + } + let msg_size = msg_size.ok_or("message length cannot be factorized")?; + let x_msg_size = msg_size.x(); + let y_msg_size = msg_size.y(); + let msg_bbox = bb2d(0..x_msg_size, 0..y_msg_size); + eprintln!("Message has format ({}, {})", x_msg_size, y_msg_size); + + // Start positions for rendering (lower left pixel). + let x_margin = (x_size - x_msg_size).max(0) / 2; + let y_margin = (y_size - y_msg_size).max(0) / 2; + let x0 = bbox.x_start() + x_margin; + let y0 = bbox.y_start() + y_margin; + let p0 = p2d(x0, y0); + + for p_msg in msg_bbox { + let v_msg = p_msg.to_vec(); + let x = v_msg.x(); + let y = v_msg.y(); + // TODO Automatically determine orientation + // let i = usize::try_from(x + y * x_msg_size).unwrap(); + let i = usize::try_from(y + x * y_msg_size).unwrap(); + if msg[i] { + frame.set(p0 + v_msg, Pixel::Foreground); + } + } + + loop { + let mut buf = Vec::with_capacity(frame_size); + send(&mut buf, &frame)?; + stdout().write_all(&buf)?; + stdout().flush()?; + sleep(delay); + } +}