arnekeller/BwInf37-Runde2-Aufgabe2
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Arne Keller 2019-04-27 17:33:54 +02:00
parent 673cbf8e89
commit 31f3c832bb
2 changed files with 48 additions and 40 deletions
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5
Cargo.toml
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@ -4,6 +4,11 @@ version = "0.1.0"
authors = ["Arne Keller <arne.keller01@yahoo.de>"]
edition = "2018"
[profile.release]
codegen-units = 1
opt-level = 3
panic = "abort"
[dependencies]
geo = { git = "https://github.com/FliegendeWurst/geo" }
svg = "0.5.12"

83
src/main.rs
View File

@ -76,6 +76,12 @@ fn random_world(rng: &mut SmallRng, tris: &mut [Triangle], angles: &mut [f32], f
tri.0.x += dx;
tri.1.x += dx;
tri.2.x += dx;
if tri.0.x < -1000.0 {
tri.0.x += 1000.0;
tri.1.x += 1000.0;
tri.2.x += 1000.0;
break;
}
}
}
world.tris.push((0, tri));
@ -122,10 +128,10 @@ fn construct_world(tris: &[Triangle], angles: &[f32], flips: &[bool]) -> World {
tri.0.x += dx;
tri.1.x += dx;
tri.2.x += dx;
if tri.0.x < -5000.0 {
tri.0.x += 5000.0;
tri.1.x += 5000.0;
tri.2.x += 5000.0;
if tri.0.x < -1000.0 {
tri.0.x += 1000.0;
tri.1.x += 1000.0;
tri.2.x += 1000.0;
break;
}
}
@ -148,44 +154,38 @@ fn main() {
tri.2.y -= tri.0.y;
tri.0.y = 0.0;
}
let mut angles = vec![0.0; tris.len()];
let mut flips = vec![false; tris.len()];
let mut rng = SmallRng::from_entropy();
let save_prefix = "rand_";
let mut save_counter = 0;
let mut last_improvement = 0;
let mut best_width = f32::MAX;
let mut best_all = f32::MAX;
let mut random = random_world(&mut rng, &mut tris, &mut angles, &mut flips);
let mut best = f32::MAX;
let mut i = 0u64;
let save_prefix = format!("rand_sel_{}_", random::<u64>());
println!("save prefix: {}", save_prefix);
loop {
save_counter += 1;
if save_counter % 1 == 0 {
eprint!("\r[{}]", save_counter);
}
if random.width < best_width {
best_width = random.width;
last_improvement = save_counter;
if best_width < best_all {
best_all = best_width;
println!("[{}] BEST: {}", save_counter, random.width);
display::save_world(&format!("{}{}.svg", save_prefix, save_counter), &random);
optimize(99999, &mut best_all, &mut best_width, &tris, &mut angles, &mut flips, &mut rng, save_prefix, save_counter);
} else {
//eprint!("[{}] best: {} (min: {})", save_counter, random.width, best_all);
eprint!(".");
optimize(24999, &mut best_all, &mut best_width, &tris, &mut angles, &mut flips, &mut rng, save_prefix, save_counter);
}
}
random = random_world(&mut rng, &mut tris, &mut angles, &mut flips);
if save_counter - last_improvement > 200_000 {
// "restart"
best_width += 1000.0;
i += 1;
let new_best = one_main(&mut tris);
if new_best.width < best {
best = new_best.width;
//eprint!("\r");
println!("[{}] BEST {:.3} ", i, best);
display::save_world(&format!("{}{}.svg", save_prefix, i), &new_best);
} else {
//eprint!("\r");
println!("[{}] best {:.3} / prev. {:.3} ", i, new_best.width, best);
}
}
}
fn one_main(tris: &mut [Triangle]) -> World {
let mut angles = vec![0.0; tris.len()];
let mut flips = vec![false; tris.len()];
let mut rng = SmallRng::from_entropy();
let mut best_width = f32::MAX;
let mut best_all = f32::MAX;
let _random = random_world(&mut rng, tris, &mut angles, &mut flips);
optimize(69999, &mut best_all, &mut best_width, &tris, &mut angles, &mut flips, &mut rng, "rand_", 0)
}
#[allow(clippy::too_many_arguments)]
fn optimize(iters: usize, best_all: &mut f32, best_width: &mut f32, tris: &[Triangle], best_angles: &mut Vec<f32>, best_flips: &mut Vec<bool>, rng: &mut SmallRng, save_prefix: &'static str, save_counter: usize) {
fn optimize(iters: usize, best_all: &mut f32, best_width: &mut f32, tris: &[Triangle], best_angles: &mut Vec<f32>, best_flips: &mut Vec<bool>, rng: &mut SmallRng, save_prefix: &'static str, save_counter: usize) -> World {
let mut best = World { tris: vec![], width: f32::MAX };
let mut found_better = true;
let mut iteration = 0;
let flip_choice = Bernoulli::from_ratio(1, 11);
@ -210,13 +210,15 @@ fn optimize(iters: usize, best_all: &mut f32, best_width: &mut f32, tris: &[Tria
if new.width < *best_width {
if new.width < *best_all {
*best_all = new.width;
println!("[{}O{}o{}] BEST: {}", save_counter, iteration, i, new.width);
display::save_world(&format!("{}{}_{}_{}.svg", save_prefix, save_counter, iteration, i), &new);
//eprint!("\r[{}O{}o{}] at {:.3}", save_counter, iteration, i, new.width);
//display::save_world(&format!("{}{}_{}_{}.svg", save_prefix, save_counter, iteration, i), &new);
//iters = 99999;
best = new;
} else {
//eprint!("[{}O{}o{}] best: {} (min: {})", save_counter, iteration, i, new.width, best_all);
eprint!(".");
//eprint!(".");
}
*best_width = new.width;
*best_width = best.width;
found_better = true;
*best_angles = angles;
*best_flips = flips;
@ -226,6 +228,7 @@ fn optimize(iters: usize, best_all: &mut f32, best_width: &mut f32, tris: &[Tria
}
iteration += 1;
}
best
}
#[allow(clippy::cyclomatic_complexity)]