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#[macro_use]
mod error;
mod camera;
mod geometry;
mod image;
mod material;
mod ray;
mod render;
mod scene;
mod util;
mod vec3;
use std::{
sync::{Arc, Mutex, RwLock},
time::{Duration, Instant},
vec::Vec,
};
use material::{lambertian::Lambertian, metal::Metal, Material};
use minifb::{Key, Window, WindowOptions};
use synchronoise::SignalEvent;
use crate::{
camera::Camera,
error::TracerError,
geometry::sphere::Sphere,
geometry::Hittable,
image::SubImage,
render::render,
scene::Scene,
vec3::{Color, Vec3},
};
type SharedMaterial = Arc<Box<dyn Material>>;
// TODO: Read from yml
fn create_scene() -> Scene {
let mut scene = Scene::new();
let material_ground: SharedMaterial =
Arc::new(Box::new(Lambertian::new(Color::new(0.8, 0.8, 0.0))));
let material_center: SharedMaterial =
Arc::new(Box::new(Lambertian::new(Color::new(0.7, 0.3, 0.3))));
let material_left: SharedMaterial =
Arc::new(Box::new(Metal::new(Color::new(0.8, 0.8, 0.8), 0.3)));
let material_right: SharedMaterial =
Arc::new(Box::new(Metal::new(Color::new(0.8, 0.6, 0.2), 0.1)));
scene.add(Box::new(Sphere::new(
Vec3::new(0.0, -100.5, -1.0),
100.0,
Arc::clone(&material_ground),
)));
scene.add(Box::new(Sphere::new(
Vec3::new(0.0, 0.0, -1.0),
0.5,
Arc::clone(&material_center),
)));
scene.add(Box::new(Sphere::new(
Vec3::new(-1.0, 0.0, -1.0),
0.5,
Arc::clone(&material_left),
)));
scene.add(Box::new(Sphere::new(
Vec3::new(1.0, 0.0, -1.0),
0.5,
Arc::clone(&material_right),
)));
scene
}
fn run(
aspect_ratio: f64,
screen_width: usize,
samples: usize,
max_depth: usize,
recurse_depth: usize,
) -> Result<(), TracerError> {
let image = image::Image::new(aspect_ratio, screen_width, samples);
let camera = Arc::new(RwLock::new(Camera::new(&image, 2.0, 1.0)));
let scene: Arc<Box<dyn Hittable>> = Arc::new(Box::new(create_scene()));
let screen_buffer: Arc<RwLock<Vec<u32>>> =
Arc::new(RwLock::new(vec![0; image.width * image.height]));
let window_res: Arc<Mutex<Result<(), TracerError>>> = Arc::new(Mutex::new(Ok(())));
let sub_image: SubImage = (&image).into();
let move_camera = Arc::clone(&camera);
let render_image = Arc::new(SignalEvent::manual(false));
let window_render_image = Arc::clone(&render_image);
let cancel_render = Arc::new(SignalEvent::manual(false));
let window_cancel_render = cancel_render.clone();
let exit = Arc::new(SignalEvent::manual(false));
let window_exit = Arc::clone(&exit);
rayon::scope(|s| {
s.spawn(|_| {
// TODO: Make configurable
let preview_scale = 4;
let preview_samples = 2;
let preview_max_depth = 4;
let preview_recurse_depth = 4;
loop {
if exit.wait_timeout(Duration::from_secs(0)) {
return;
}
if render_image.wait_timeout(Duration::from_secs(0)) && render_image.status() {
let render_time = Instant::now();
let cancel_render_event = Arc::clone(&cancel_render);
render(
Arc::clone(&screen_buffer),
Arc::clone(&camera),
&sub_image,
Arc::clone(&scene),
samples,
1,
max_depth,
recurse_depth,
Some(cancel_render_event),
);
println!(
"It took {} seconds to render the image.",
Instant::now().duration_since(render_time).as_millis()
);
} else {
// Render preview
render(
Arc::clone(&screen_buffer),
Arc::clone(&camera),
&sub_image,
Arc::clone(&scene),
preview_samples,
preview_scale,
preview_max_depth,
// TODO: Could create a function to create the optimal value
preview_recurse_depth, //recursive thread depth
None,
);
}
}
});
s.spawn(|_| {
let result = 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 window_render_image.status() {
window_cancel_render.signal();
window_render_image.reset();
} else {
window_render_image.signal();
window_cancel_render.reset();
}
}
{
let mut cam = move_camera.write().expect("TODO");
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()))
})?
}
window_exit.signal();
Ok(())
});
if result.is_err() {
let mut a = window_res.lock().expect("Failed to get result lock.");
*a = result;
}
});
});
let res = (window_res.lock().expect("Failed to get result lock.")).clone();
res
}
fn main() {
// TODO: Read configuration and args
let samples = 1000; // Samples per pixel
let max_depth = 50; // Max ray trace depth
let recurse_depth = 4; // How many times the screen with split itself into sub images each time splitting it into 4 new smaller ones.
if let Err(e) = run(16.0 / 9.0, 1280, samples, max_depth, recurse_depth) {
eprintln!("{}", e);
std::process::exit(e.into())
}
}
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