arnekeller/BwInf37-Runde2-Aufgabe2
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Fix heuristic

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This commit is contained in:
Arne Keller 2019-03-23 17:25:15 +01:00
parent 0094cfa2d5
commit 78fc841e6a
1 changed files with 45 additions and 29 deletions
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74
src/main.rs
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@ -148,6 +148,7 @@ fn main() {
let save_prefix = "start_";
save_counter = 0;
let mut worlds = BinaryHeap::new();
let left_tris = vec![left_tris[1], left_tris[11], left_tris[17], left_tris[23], left_tris[28]];
for t in &left_tris {
let mut world = World {
tris: vec![*t],
@ -169,43 +170,55 @@ fn main() {
let w = worlds.pop().unwrap();
//println!("s: {:?}", w);
display::save_world(&format!("{}a_{}.svg", save_prefix, save_counter), &w);
let save_iterations = save_counter == 713;
let mut new = vec![];
for (next_idx, next_tri) in left_tris
.iter()
.filter(|(idx1, _tri)| w.tris.iter().all(|(idx2, _tri)| idx1 != idx2))
{
//println!("trying {:?}", next_idx);
let (_, last_tri) = *w.tris.last().unwrap();
let last_vertex =
if last_tri.1.y > 0.01 && !(last_tri.2.y > 0.01 && last_tri.2.x > last_tri.1.x) {
last_tri.1
} else {
last_tri.2
};
let (last_idx, last_tri) = *w.tris.last().unwrap();
let mut free_angle = angle_of(last_tri, last_vertex);
//println!("angle of {:?}: {:?}", last_vertex, free_angle);
if last_vertex.x > 0.0 {
free_angle = 0.5 * PI - free_angle;
} else {
free_angle = 0.5 * PI + free_angle;
}
let vertex1 = last_tri.1;
let vertex2 = last_tri.2;
let next_vertex = if next_tri.1.y < 0.001 && next_tri.1.y > -0.001 {
next_tri.2
} else if next_tri.2.y < 0.001 && next_tri.2.y > -0.001 {
next_tri.1
} else if next_tri.1.x < next_tri.2.x {
next_tri.1
let free_angle = if vertex1.y > 0.001 && vertex2.y < 0.001 {
PI - (vertex1.y / (vertex2.x - vertex1.x).abs()).atan()
} else if vertex2.y > 0.001 && vertex1.y < 0.001 {
PI - (vertex2.y / (vertex2.x - vertex1.x).abs()).atan()
} else {
next_tri.2
let angle1 = 0.5 * PI - vertex1.x.signum() * (vertex1.x.abs() / vertex1.y).atan();
let angle2 = 0.5 * PI - vertex2.x.signum() * (vertex2.x.abs() / vertex2.y).atan();
min(angle1, angle2)
};
let next_angle = PI - angle_of(*next_tri, next_vertex);
for angle in 0..=150 {
let angle = (1.0 * angle as f32).to_radians();
let next_angle = next_angle - angle;
let mut tri = rotate(*next_tri, angle);
let vertex1 = next_tri.1;
let vertex2 = next_tri.2;
let next_angle = if vertex1.y > 0.001 && vertex2.y > 0.001 {
let angle1 = 0.5 * PI + vertex1.x.signum() * (vertex1.x.abs() / vertex1.y).atan();
let angle2 = 0.5 * PI + vertex2.x.signum() * (vertex2.x.abs() / vertex2.y).atan();
min(angle1, angle2)
} else if vertex1.y < 0.001 {
0.5 * PI + vertex2.x.signum() * (vertex2.x.abs() / vertex2.y).atan()
} else {
0.5 * PI + vertex1.x.signum() * (vertex1.x.abs() / vertex1.y).atan()
};
//println!("{:?} -> {:?}: {:?} {:?}", last_idx, next_idx, free_angle.to_degrees(), next_angle.to_degrees());
let target = next_angle - PI + free_angle;
let as_f32 = |x| x as f32;
let range = if target >= 0.0 {
(0..=(target-0.0001).to_degrees() as usize).map(as_f32).chain(Some(target))
} else {
(0..=(next_angle-0.0001).to_degrees() as usize).map(as_f32).chain(None)
};
for angle in range {
let radians = angle.to_radians();
let next_angle = next_angle - radians;
let mut tri = rotate(*next_tri, radians);
let dx = if last_tri.intersects(&tri) {
0.005
@ -221,12 +234,12 @@ fn main() {
w.tris.push((*next_idx, tri));
w.normalize();
w.calc_width();
if save_counter < 100 {
display::save_world(&format!("{}{}.svg", save_prefix, save_counter), &w);
if save_iterations {
display::save_world(&format!("{}b_{}.svg", save_prefix, save_counter), &w);
}
if w.tris.len() == count_tris {
if w.width < best.width {
println!("new best: {}", w.width);
println!("[{}] new best: {}", save_counter, w.width);
println!("{:?}", w.tris);
display::save_world(
&format!("{}best_{}.svg", save_prefix, save_counter),
@ -236,6 +249,9 @@ fn main() {
}
} else {
w.width -= (2.0 * PI - free_angle - next_angle) * 0.003 * w.tris.len() as f32;
//if (angle > 50 && angle < 55) || (angle > 88 && angle < 92) {
//println!("{:?} -> {:?}", angle, w.width);
//}
new.push(w);
}
save_counter += 1;