54 lines
1.5 KiB
Rust
54 lines
1.5 KiB
Rust
//! An example on how to modify the image on screen without knowing the current content.
|
|
|
|
use clap::Parser;
|
|
use servicepoint::{
|
|
Bitmap, BitmapCommand, CompressionCode, GridMut, Origin, Packet,
|
|
UdpSocketExt, FRAME_PACING, PIXEL_HEIGHT, PIXEL_WIDTH,
|
|
};
|
|
use std::{net::UdpSocket, thread, time::Duration};
|
|
|
|
#[derive(Parser, Debug)]
|
|
struct Cli {
|
|
#[arg(short, long, default_value = "localhost:2342")]
|
|
destination: String,
|
|
#[arg(short, long = "duration-ms", default_value_t = 5000)]
|
|
time: u64,
|
|
}
|
|
|
|
fn main() {
|
|
let cli = Cli::parse();
|
|
|
|
let sleep_duration = Duration::max(
|
|
FRAME_PACING,
|
|
Duration::from_millis(cli.time / PIXEL_WIDTH as u64),
|
|
);
|
|
|
|
let connection = UdpSocket::bind_connect(cli.destination)
|
|
.expect("could not connect to display");
|
|
|
|
let mut command = BitmapCommand {
|
|
compression: CompressionCode::Uncompressed,
|
|
bitmap: Bitmap::max_sized(),
|
|
origin: Origin::ZERO,
|
|
};
|
|
|
|
command.bitmap.fill(true);
|
|
|
|
let mut buf = [0u8; 10000];
|
|
for x_offset in 0..PIXEL_WIDTH {
|
|
for y in 0..PIXEL_HEIGHT {
|
|
command.bitmap.set((x_offset + y) % PIXEL_WIDTH, y, false);
|
|
}
|
|
|
|
let packet: Packet = Packet::try_from(&command)
|
|
.expect("could not turn command into packet");
|
|
let size = packet
|
|
.serialize_to(&mut buf)
|
|
.expect("failed to serialize packet");
|
|
connection
|
|
.send(&buf[..size])
|
|
.expect("could not send command to display");
|
|
|
|
thread::sleep(sleep_duration);
|
|
}
|
|
}
|