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#[macro_use]
mod error;
mod camera;
mod config;
mod geometry;
mod image;
mod material;
mod ray;
mod render;
mod scene;
mod util;
mod vec3;
use std::{
convert::TryFrom,
sync::RwLock,
time::{Duration, Instant},
vec::Vec,
};
use minifb::{Key, Window, WindowOptions};
use synchronoise::SignalEvent;
use crate::{
camera::Camera,
config::{Args, Config},
error::TracerError,
render::render,
scene::Scene,
};
fn run(config: Config) -> Result<(), TracerError> {
let image = image::Image::new(config.screen.width, config.screen.height);
let screen_buffer: RwLock<Vec<u32>> = RwLock::new(vec![0; image.width * image.height]);
let camera = RwLock::new(Camera::new(&image, 2.0, 1.0));
let scene: Scene = config
.scene
.ok_or(TracerError::NoScene())
.and_then(Scene::from_file)?;
let mut window_res: Result<(), TracerError> = Ok(());
let mut render_res: Result<(), TracerError> = Ok(());
let render_image = SignalEvent::manual(false);
let cancel_render = SignalEvent::manual(false);
let exit = SignalEvent::manual(false);
rayon::scope(|s| {
s.spawn(|_| {
while render_res.is_ok() {
render_res = (!exit.wait_timeout(Duration::from_secs(0)))
.then_some(|| ())
.ok_or(TracerError::ExitEvent)
.and_then(|_| {
render_image
.wait_timeout(Duration::from_secs(0))
.then_some(|| ())
.map_or_else(
|| {
// Render preview
render(
&screen_buffer,
&camera,
&image,
&scene,
&config.preview,
None,
Some(config.preview.scale),
)
},
|_| {
let render_time = Instant::now();
let res = render(
&screen_buffer,
&camera,
&image,
&scene,
&config.render,
Some(&cancel_render),
None,
);
render_image.reset();
println!(
"It took {} seconds to render the image.",
Instant::now().duration_since(render_time).as_secs()
);
// TODO: Output the image
res
},
)
});
}
});
s.spawn(|_| {
window_res = Window::new(
"racer-tracer",
image.width,
image.height,
WindowOptions::default(),
)
.map_err(|e| TracerError::FailedToCreateWindow(e.to_string()))
.map(|mut window| {
window.limit_update_rate(Some(std::time::Duration::from_micros(16600)));
window
})
.and_then(|mut window| {
let mut t = Instant::now();
while window.is_open() && !window.is_key_down(Key::Escape) {
let dt = t.elapsed().as_micros() as f64 / 1000000.0;
t = Instant::now();
// Sleep a bit to not hog the lock on the buffer all the time.
std::thread::sleep(std::time::Duration::from_millis(10));
if window.is_key_released(Key::R) {
if render_image.status() {
// Signal cancel
cancel_render.signal();
render_image.reset();
} else {
// Signal render
render_image.signal();
cancel_render.reset();
}
}
camera
.write()
.map_err(|e| TracerError::FailedToAcquireLock(e.to_string()))
.map(|mut cam| {
if window.is_key_down(Key::W) {
cam.go_forward(-dt);
} else if window.is_key_down(Key::S) {
cam.go_forward(dt);
}
if window.is_key_down(Key::A) {
cam.go_right(-dt);
} else if window.is_key_down(Key::D) {
cam.go_right(dt);
}
})?;
screen_buffer
.read()
.map_err(|e| TracerError::FailedToUpdateWindow(e.to_string()))
.and_then(|buf| {
window
.update_with_buffer(&buf, image.width, image.height)
.map_err(|e| TracerError::FailedToUpdateWindow(e.to_string()))
})?
}
exit.signal();
cancel_render.signal();
Ok(())
});
});
});
window_res.and(render_res)
}
use structopt::StructOpt;
fn main() {
match Config::try_from(Args::from_args()).and_then(run) {
Err(TracerError::ExitEvent) => {}
Ok(_) => {}
Err(e) => {
eprintln!("{}", e);
std::process::exit(e.into())
}
}
}
|
