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fix bit count direction

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This commit is contained in:
Vinzenz Schroeter 2024-05-08 20:17:39 +02:00
parent 414981f617
commit 2e30d91d7e
1 changed files with 24 additions and 13 deletions
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37
src/main.rs
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@ -54,6 +54,14 @@ struct HdrBitmap {
reserved: u16,
}
const TILE_SIZE: u16 = 8;
const TILE_WIDTH: u16 = 65;
const TILE_HEIGHT: u16 = 20;
const TILE_COUNT: u16 = TILE_WIDTH * TILE_HEIGHT;
const PIXEL_WIDTH: u16 = TILE_WIDTH * TILE_SIZE;
const PIXEL_HEIGHT: u16 = TILE_HEIGHT * TILE_SIZE;
const PIXEL_COUNT: u16 = PIXEL_WIDTH * TILE_HEIGHT;
fn main() -> std::io::Result<()> {
assert_eq!(size_of::<HdrWindow>(), 10, "invalid struct size");
@ -69,6 +77,8 @@ fn main() -> std::io::Result<()> {
fn main2(cli: &Cli) -> std::io::Result<()> {
println!("display booting up");
let screen = [0u8; TILE_COUNT as usize];
let socket = UdpSocket::bind(&cli.bind)?;
let mut buf = [0; 8985];
@ -77,13 +87,14 @@ fn main2(cli: &Cli) -> std::io::Result<()> {
let received = &mut buf[..amount];
let header = read_hdr_window(&received[..10]);
if header.is_err() {
println!("could not read header: {}", header.err().unwrap());
if let Err(err) = header {
println!("could not read header: {}", err);
continue;
}
let header = header.unwrap();
let header = header.unwrap();
let payload = &received[10..];
println!(
"received from {:?}: {:?} (and {} bytes of payload)",
source,
@ -153,18 +164,18 @@ fn print_bitmap_linear_win(header: &HdrWindow, payload: &[u8]) {
return;
}
println!("top left is offset by ({} | {})", header.x, header.y);
println!(
"top left is offset {} tiles in x-direction and {} pixels in y-direction",
header.x, header.y
);
for y in 0..header.h {
for byte_x in 0..header.w {
let byte_index = (y * header.w + byte_x) as usize;
let byte = payload[byte_index];
for bitmask in [1, 2, 4, 8, 16, 32, 64, 128] {
let char = if byte & bitmask == bitmask {
'█'
} else {
' '
};
for e in (1u8..7u8).rev() {
let bitmask = 1 << e;
let char = if byte & bitmask != 0 { '█' } else { ' ' };
print!("{}", char);
}
}
@ -179,10 +190,10 @@ fn print_cp437_data(header: &HdrWindow, payload: &[u8]) {
return;
}
println!("top left is offset by ({} | {})", header.x, header.y);
println!("top left is offset by ({} | {}) tiles", header.x, header.y);
for y in 0..header.h {
for byte_x in 0..header.w {
let byte_index = (y * header.w + byte_x) as usize;
for x in 0..header.w {
let byte_index = (y * header.w + x) as usize;
print!("{}", payload[byte_index] as char)
}