Initial Code
This commit is contained in:
parent
a8641690e6
commit
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340
Cargo.lock
generated
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340
Cargo.lock
generated
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@ -0,0 +1,340 @@
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"windows-sys",
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|
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|
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"windows_x86_64_msvc",
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checksum = "c1040f221285e17ebccbc2591ffdc2d44ee1f9186324dd3e84e99ac68d699c45"
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||||
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||||
[[package]]
|
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name = "windows_x86_64_gnullvm"
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version = "0.42.1"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "628bfdf232daa22b0d64fdb62b09fcc36bb01f05a3939e20ab73aaf9470d0463"
|
||||
|
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[[package]]
|
||||
name = "windows_x86_64_msvc"
|
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version = "0.42.1"
|
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "447660ad36a13288b1db4d4248e857b510e8c3a225c822ba4fb748c0aafecffd"
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||||
13
Cargo.toml
Normal file
13
Cargo.toml
Normal file
@ -0,0 +1,13 @@
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||||
[package]
|
||||
name = "rust-codebase"
|
||||
version = "0.1.0"
|
||||
edition = "2021"
|
||||
|
||||
# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
|
||||
|
||||
[dependencies]
|
||||
clap = "4.1.8"
|
||||
#bevy = { version = "0.9.1", features = ["dynamic"] }
|
||||
nd_array = "0.1.0"
|
||||
num-integer = "0.1.45"
|
||||
rand = { version = "0.8.5", features = ["default", "small_rng"] }
|
||||
2
rust-toolchain.toml
Normal file
2
rust-toolchain.toml
Normal file
@ -0,0 +1,2 @@
|
||||
[toolchain]
|
||||
channel = "nightly"
|
||||
156
src/main.rs
Normal file
156
src/main.rs
Normal file
@ -0,0 +1,156 @@
|
||||
use std::cmp::{max, min};
|
||||
use std::fs::File;
|
||||
use std::io;
|
||||
use std::io::Write;
|
||||
use std::ops::Add;
|
||||
use nd_array::Array;
|
||||
use rand::prelude::*;
|
||||
|
||||
mod system;
|
||||
|
||||
use system::walker::{Walker, LocalRandomWalker};
|
||||
use system::storage::{Storage, VectorStorage};
|
||||
use num_integer::Integer;
|
||||
use rand::rngs::SmallRng;
|
||||
use crate::system::{DIM, Position};
|
||||
|
||||
struct DLASystem<S: Storage, W: Walker> {
|
||||
rng: SmallRng,
|
||||
|
||||
storage: S,
|
||||
walker: W,
|
||||
|
||||
stick_probability: f32,
|
||||
max_particles: usize,
|
||||
|
||||
running: bool,
|
||||
|
||||
particles: Vec<Position>,
|
||||
active_particle: Option<Position>,
|
||||
|
||||
add_ratio: f32,
|
||||
add_circle: f32,
|
||||
kill_ratio: f32,
|
||||
kill_circle: f32,
|
||||
cluster_radius: f32,
|
||||
}
|
||||
|
||||
impl<S: Storage, W: Walker> DLASystem<S, W> {
|
||||
fn new(seed: u64, max_particles: usize, stick_probability: f32) -> DLASystem<VectorStorage, LocalRandomWalker> {
|
||||
let mut sys: DLASystem<VectorStorage, LocalRandomWalker> = DLASystem {
|
||||
rng: SmallRng::seed_from_u64(seed),
|
||||
stick_probability,
|
||||
max_particles,
|
||||
running: true,
|
||||
|
||||
storage: VectorStorage::new(1600, 2),
|
||||
walker: LocalRandomWalker,
|
||||
particles: vec![],
|
||||
active_particle: None,
|
||||
|
||||
add_ratio: 1.2,
|
||||
kill_ratio: 1.7,
|
||||
|
||||
add_circle: 10.0,
|
||||
kill_circle: 20.0,
|
||||
cluster_radius: 0.0,
|
||||
};
|
||||
|
||||
sys.deposit(&Position(0, 0));
|
||||
|
||||
sys
|
||||
}
|
||||
|
||||
fn update(&mut self) {
|
||||
if self.active_particle.is_some() {
|
||||
self.move_particle();
|
||||
} else if self.particles.len() < self.max_particles {
|
||||
self.spawn_particle();
|
||||
} else {
|
||||
self.running = false;
|
||||
}
|
||||
}
|
||||
|
||||
fn move_particle(&mut self) {
|
||||
let current_position = &self
|
||||
.active_particle
|
||||
.clone()
|
||||
.expect("No active particle");
|
||||
|
||||
if self.check_stick(current_position) {
|
||||
self.deposit(current_position);
|
||||
self.active_particle = None;
|
||||
return;
|
||||
}
|
||||
|
||||
let next_position = self.walker.walk(&mut self.rng, current_position);
|
||||
let distance = next_position.abs();
|
||||
|
||||
if distance > self.kill_circle {
|
||||
self.active_particle = None;
|
||||
} else if !self.storage.at(&next_position) {
|
||||
self.active_particle.replace(next_position);
|
||||
}
|
||||
}
|
||||
|
||||
fn check_stick(&mut self, position: &Position) -> bool {
|
||||
for direction in 0..DIM {
|
||||
for sign in [-1, 1] {
|
||||
let neighbour = position.clone() + Position::in_direction(direction, sign);
|
||||
if self.storage.at(&neighbour) && self.rng.gen_range(0.0f32..1.0) < self.stick_probability {
|
||||
return true;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return false;
|
||||
}
|
||||
|
||||
fn spawn_particle(&mut self) {
|
||||
let theta = self.rng.gen_range(0f32..1.0);
|
||||
let (x, y) = (self.add_circle * theta.cos(), self.add_circle * theta.sin());
|
||||
let position = Position(x.round() as i32, y.round() as i32);
|
||||
|
||||
if !self.storage.at(&position) {
|
||||
self.active_particle = Some(position);
|
||||
}
|
||||
}
|
||||
|
||||
fn deposit(&mut self, p0: &Position) {
|
||||
self.particles.push(p0.clone());
|
||||
self.storage.deposit(p0);
|
||||
|
||||
let distance = p0.abs();
|
||||
if distance > self.cluster_radius {
|
||||
self.cluster_radius = distance;
|
||||
|
||||
let new_add_circle = (self.cluster_radius * self.add_ratio).max(self.cluster_radius + 5.0);
|
||||
if self.add_circle < new_add_circle {
|
||||
self.add_circle = new_add_circle;
|
||||
self.kill_circle = self.kill_ratio * self.add_circle;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
fn export_data(&self) -> io::Result<()> {
|
||||
let mut file = File::create("out.csv")?;
|
||||
writeln!(&mut file, "x, y")?;
|
||||
|
||||
for particle in &self.particles {
|
||||
writeln!(&mut file, "{}, {}", particle.0, particle.1)?;
|
||||
}
|
||||
|
||||
Ok(())
|
||||
}
|
||||
}
|
||||
|
||||
fn main() {
|
||||
use rand::{SeedableRng, thread_rng};
|
||||
let mut sys: DLASystem<VectorStorage, LocalRandomWalker> = DLASystem::<VectorStorage, LocalRandomWalker>::new(1, 1000, 1.0);
|
||||
|
||||
while sys.running {
|
||||
sys.update();
|
||||
}
|
||||
|
||||
sys.export_data();
|
||||
}
|
||||
27
src/system/mod.rs
Normal file
27
src/system/mod.rs
Normal file
@ -0,0 +1,27 @@
|
||||
use std::ops::Add;
|
||||
|
||||
pub mod walker;
|
||||
pub mod storage;
|
||||
|
||||
pub const DIM: u32 = 2;
|
||||
|
||||
#[derive(Clone, Debug)]
|
||||
pub struct Position(pub i32, pub i32);
|
||||
|
||||
impl Position {
|
||||
pub fn abs(&self) -> f32 {
|
||||
((self.0.pow(2) + self.0.pow(2)) as f32).powf(0.5)
|
||||
}
|
||||
|
||||
pub fn in_direction(direction: u32, value: i32) -> Self {
|
||||
if direction == 0 { Position(value, 0) } else { Position(0, value) }
|
||||
}
|
||||
}
|
||||
|
||||
impl Add for Position {
|
||||
type Output = Position;
|
||||
|
||||
fn add(self, rhs: Self) -> Self::Output {
|
||||
Position(self.0 + rhs.0, self.1 + rhs.1)
|
||||
}
|
||||
}
|
||||
37
src/system/storage.rs
Normal file
37
src/system/storage.rs
Normal file
@ -0,0 +1,37 @@
|
||||
use nd_array::Array;
|
||||
use crate::system::Position;
|
||||
|
||||
pub trait Storage {
|
||||
fn at(&self, position: &Position) -> bool;
|
||||
fn deposit(&mut self, position: &Position);
|
||||
}
|
||||
|
||||
pub struct VectorStorage {
|
||||
backing: Vec<bool>,
|
||||
grid_size: u32,
|
||||
dim: u32,
|
||||
}
|
||||
|
||||
impl VectorStorage {
|
||||
pub(crate) fn new(grid_size: u32, dim: u32) -> VectorStorage {
|
||||
VectorStorage { grid_size, dim, backing: vec![false; grid_size.pow(dim) as usize] }
|
||||
}
|
||||
|
||||
fn linear_index(&self, position: &Position) -> usize {
|
||||
let x = (position.0 + (self.grid_size as i32) / 2) as usize;
|
||||
let y = (position.1 + (self.grid_size as i32) / 2) as usize;
|
||||
|
||||
return self.grid_size as usize * y + x
|
||||
}
|
||||
}
|
||||
|
||||
impl Storage for VectorStorage {
|
||||
fn at(&self, position: &Position) -> bool {
|
||||
return self.backing[self.linear_index(position)]
|
||||
}
|
||||
|
||||
fn deposit(&mut self, position: &Position) {
|
||||
let index = self.linear_index(position);
|
||||
self.backing[index] = true;
|
||||
}
|
||||
}
|
||||
19
src/system/walker.rs
Normal file
19
src/system/walker.rs
Normal file
@ -0,0 +1,19 @@
|
||||
use num_integer::Integer;
|
||||
use rand::prelude::{Rng, SmallRng};
|
||||
use crate::system::{DIM, Position};
|
||||
|
||||
pub trait Walker {
|
||||
fn walk(&self, rng: &mut SmallRng, position: &Position) -> Position;
|
||||
}
|
||||
|
||||
pub struct LocalRandomWalker;
|
||||
|
||||
impl Walker for LocalRandomWalker {
|
||||
fn walk(&self, rng: &mut SmallRng, position: &Position) -> Position {
|
||||
let (dim, sign) = rng.gen_range(0u32..(DIM * 2)).div_rem(&DIM);
|
||||
let sign = if sign == 0 { -1 } else { 1 };
|
||||
let offset = Position::in_direction(dim, sign);
|
||||
|
||||
position.clone() + offset
|
||||
}
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user