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7 changed files with 647 additions and 271 deletions
594
Cargo.lock
generated
594
Cargo.lock
generated
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@ -1,18 +1,6 @@
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||||
dependencies = [
|
||||
"delaunator",
|
||||
"geo",
|
||||
"geo-types",
|
||||
"itertools 0.12.1",
|
||||
"rand",
|
||||
"rayon",
|
||||
"statrs",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "zerocopy"
|
||||
version = "0.7.32"
|
||||
name = "zmij"
|
||||
version = "1.0.21"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "74d4d3961e53fa4c9a25a8637fc2bfaf2595b3d3ae34875568a5cf64787716be"
|
||||
dependencies = [
|
||||
"zerocopy-derive",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "zerocopy-derive"
|
||||
version = "0.7.32"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "9ce1b18ccd8e73a9321186f97e46f9f04b778851177567b1975109d26a08d2a6"
|
||||
dependencies = [
|
||||
"proc-macro2",
|
||||
"quote",
|
||||
"syn 2.0.55",
|
||||
]
|
||||
checksum = "b8848ee67ecc8aedbaf3e4122217aff892639231befc6a1b58d29fff4c2cabaa"
|
||||
|
|
|
|||
18
Cargo.toml
18
Cargo.toml
|
|
@ -1,16 +1,20 @@
|
|||
[package]
|
||||
name = "xenobalanus"
|
||||
version = "0.1.3"
|
||||
version = "0.2.0"
|
||||
edition = "2021"
|
||||
authors = ["Tobias Raayoni Last <tobias@randonauts.com>"]
|
||||
repository = "https://github.com/randogoth/xenobalanus"
|
||||
readme = "readme.md"
|
||||
license = "MIT"
|
||||
license-file = "LICENSE"
|
||||
keywords = ["dtscan", "dbscan", "delfin", "cluster", "void", "delaunay", "astronomy", "attractor"]
|
||||
categories = ["algorithms", "science", "mathematics"]
|
||||
|
||||
[lib]
|
||||
name = "xenobalanus"
|
||||
|
||||
[dependencies]
|
||||
delaunator = "1.0.2"
|
||||
geo = "0.28.0"
|
||||
geo-types = "0.7.13"
|
||||
itertools = "0.12.1"
|
||||
rand = "0.8.5"
|
||||
rayon = "1.9.0"
|
||||
statrs = "0.16.0"
|
||||
geo = "0.30"
|
||||
rand = "0.10"
|
||||
rayon = "1.12"
|
||||
|
|
|
|||
21
LICENSE
Normal file
21
LICENSE
Normal file
|
|
@ -0,0 +1,21 @@
|
|||
MIT License
|
||||
|
||||
Copyright (c) 2024 Tobias Raayoni Last
|
||||
|
||||
Permission is hereby granted, free of charge, to any person obtaining a copy
|
||||
of this software and associated documentation files (the "Software"), to deal
|
||||
in the Software without restriction, including without limitation the rights
|
||||
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
||||
copies of the Software, and to permit persons to whom the Software is
|
||||
furnished to do so, subject to the following conditions:
|
||||
|
||||
The above copyright notice and this permission notice shall be included in all
|
||||
copies or substantial portions of the Software.
|
||||
|
||||
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||||
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||||
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
||||
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
||||
SOFTWARE.
|
||||
14
devbox.json
Normal file
14
devbox.json
Normal file
|
|
@ -0,0 +1,14 @@
|
|||
{
|
||||
"$schema": "https://raw.githubusercontent.com/jetify-com/devbox/0.16.0/.schema/devbox.schema.json",
|
||||
"packages": ["rustup@latest"],
|
||||
"shell": {
|
||||
"init_hook": [
|
||||
"echo 'Welcome to devbox!' > /dev/null"
|
||||
],
|
||||
"scripts": {
|
||||
"test": [
|
||||
"echo \"Error: no test specified\" && exit 1"
|
||||
]
|
||||
}
|
||||
}
|
||||
}
|
||||
58
devbox.lock
Normal file
58
devbox.lock
Normal file
|
|
@ -0,0 +1,58 @@
|
|||
{
|
||||
"lockfile_version": "1",
|
||||
"packages": {
|
||||
"github:NixOS/nixpkgs/nixpkgs-unstable": {
|
||||
"last_modified": "2026-05-29T05:01:12Z",
|
||||
"resolved": "github:NixOS/nixpkgs/e9a7635a57597d9754eccebdfc7045e6c8600e6b?lastModified=1780030872&narHash=sha256-u6WU%2Fyd%2Fo8iYQrHX3RAwO1hYa3LkoSL%2BWNQD0rJfJZQ%3D"
|
||||
},
|
||||
"rustup@latest": {
|
||||
"last_modified": "2026-05-21T08:15:18Z",
|
||||
"plugin_version": "0.0.1",
|
||||
"resolved": "github:NixOS/nixpkgs/4a29d733e8a7d5b824c3d8c958a946a9867b3eb2#rustup",
|
||||
"source": "devbox-search",
|
||||
"version": "1.29.0",
|
||||
"systems": {
|
||||
"aarch64-darwin": {
|
||||
"outputs": [
|
||||
{
|
||||
"name": "out",
|
||||
"path": "/nix/store/nl70ay30nl2szm2g03xa0d7ai69dgbln-rustup-1.29.0",
|
||||
"default": true
|
||||
}
|
||||
],
|
||||
"store_path": "/nix/store/nl70ay30nl2szm2g03xa0d7ai69dgbln-rustup-1.29.0"
|
||||
},
|
||||
"aarch64-linux": {
|
||||
"outputs": [
|
||||
{
|
||||
"name": "out",
|
||||
"path": "/nix/store/684175m8xqfisacqw9rdc97fn2vpp0fj-rustup-1.29.0",
|
||||
"default": true
|
||||
}
|
||||
],
|
||||
"store_path": "/nix/store/684175m8xqfisacqw9rdc97fn2vpp0fj-rustup-1.29.0"
|
||||
},
|
||||
"x86_64-darwin": {
|
||||
"outputs": [
|
||||
{
|
||||
"name": "out",
|
||||
"path": "/nix/store/4hqncs7jnqc64z49r1w09b235074li9q-rustup-1.29.0",
|
||||
"default": true
|
||||
}
|
||||
],
|
||||
"store_path": "/nix/store/4hqncs7jnqc64z49r1w09b235074li9q-rustup-1.29.0"
|
||||
},
|
||||
"x86_64-linux": {
|
||||
"outputs": [
|
||||
{
|
||||
"name": "out",
|
||||
"path": "/nix/store/dpqx1vygrisrvnnwgym1226x317vqp4a-rustup-1.29.0",
|
||||
"default": true
|
||||
}
|
||||
],
|
||||
"store_path": "/nix/store/dpqx1vygrisrvnnwgym1226x317vqp4a-rustup-1.29.0"
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
@ -44,7 +44,9 @@ fn main() {
|
|||
println!("Generated Delaunay triangulation");
|
||||
|
||||
// Pre-process triangles
|
||||
xeno.preprocess(0);
|
||||
// 1 - attractors, 2 - voids, 0 - both
|
||||
// true/false - parallel processing
|
||||
xeno.preprocess(0, false);
|
||||
|
||||
// Execute delfin function with the generated GeometryData
|
||||
let min_area: f32 = 1000.0; // threshold for voidness
|
||||
|
|
|
|||
203
src/lib.rs
203
src/lib.rs
|
|
@ -1,6 +1,30 @@
|
|||
/*
|
||||
MIT License
|
||||
|
||||
Copyright (c) 2024 Tobias Raayoni Last
|
||||
|
||||
Permission is hereby granted, free of charge, to any person obtaining a copy
|
||||
of this software and associated documentation files (the "Software"), to deal
|
||||
in the Software without restriction, including without limitation the rights
|
||||
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
||||
copies of the Software, and to permit persons to whom the Software is
|
||||
furnished to do so, subject to the following conditions:
|
||||
|
||||
The above copyright notice and this permission notice shall be included in all
|
||||
copies or substantial portions of the Software.
|
||||
|
||||
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||||
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||||
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
||||
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
||||
SOFTWARE.
|
||||
*/
|
||||
|
||||
use delaunator::{triangulate, Point as DelaunatorPoint};
|
||||
use geo::{Point as GeoPoint, Coord};
|
||||
use rand::Rng;
|
||||
use rand::RngExt;
|
||||
use rayon::prelude::*;
|
||||
use std::cmp::{min, max};
|
||||
use std::collections::{HashMap, HashSet};
|
||||
|
|
@ -40,6 +64,12 @@ impl Point {
|
|||
bearing
|
||||
}
|
||||
|
||||
pub fn bearing_rad(&self, point: Point) -> f32 {
|
||||
let delta_x = point.x - self.x;
|
||||
let delta_y = point.y - self.y;
|
||||
delta_y.atan2(delta_x)
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
impl From<Point> for Coord<f32> {
|
||||
|
|
@ -235,10 +265,10 @@ impl Xenobalanus {
|
|||
let max_x = center.0 + side_length / 2.0;
|
||||
let min_y = center.1 - side_length / 2.0;
|
||||
let max_y = center.1 + side_length / 2.0;
|
||||
let mut rng: rand::prelude::ThreadRng = rand::thread_rng();
|
||||
let mut rng = rand::rng();
|
||||
for _ in 0..num_points {
|
||||
let x = min_x + rng.gen_range(0.0..=1.0) as f32 * ( max_x - min_x);
|
||||
let y: f32 = min_y + rng.gen_range(0.0..=1.0) as f32 * ( max_y - min_y);
|
||||
let x = min_x + rng.random_range(0.0..=1.0) as f32 * ( max_x - min_x);
|
||||
let y: f32 = min_y + rng.random_range(0.0..=1.0) as f32 * ( max_y - min_y);
|
||||
self.points.push(Point {x, y});
|
||||
}
|
||||
}
|
||||
|
|
@ -258,18 +288,27 @@ impl Xenobalanus {
|
|||
self.triangulation = result.triangles
|
||||
}
|
||||
|
||||
pub fn preprocess(&mut self, types: usize) {
|
||||
let geometry_data = Arc::new(Mutex::new(GeometryData::new()));
|
||||
pub fn preprocess(&mut self, types: usize, parallel: bool) {
|
||||
if parallel {
|
||||
|
||||
self.triangulation.par_chunks(3).enumerate().for_each(|(index, tri_idx)| {
|
||||
let gd = geometry_data.clone(); // Clone Arc for use in each thread, not the data itself
|
||||
let geometry_data = Arc::new(Mutex::new(GeometryData::new()));
|
||||
|
||||
// Perform locked update
|
||||
let mut gd_lock = gd.lock().unwrap();
|
||||
gd_lock.add_triangle(index, &self.points, tri_idx, types);
|
||||
});
|
||||
self.triangulation.par_chunks(3).enumerate().for_each(|(index, tri_idx)| {
|
||||
let gd = geometry_data.clone(); // Clone Arc for use in each thread, not the data itself
|
||||
|
||||
self.geometry_data = Arc::try_unwrap(geometry_data).unwrap().into_inner().unwrap();
|
||||
// Perform locked update
|
||||
let mut gd_lock = gd.lock().unwrap();
|
||||
gd_lock.add_triangle(index, &self.points, tri_idx, types);
|
||||
});
|
||||
|
||||
self.geometry_data = Arc::try_unwrap(geometry_data).unwrap().into_inner().unwrap();
|
||||
} else {
|
||||
|
||||
self.triangulation.chunks(3).enumerate().for_each(|(index, tri_idx)| {
|
||||
self.geometry_data.add_triangle(index, &self.points, tri_idx, types);
|
||||
});
|
||||
|
||||
}
|
||||
}
|
||||
|
||||
pub fn delfin(
|
||||
|
|
@ -416,3 +455,141 @@ impl Xenobalanus {
|
|||
clusters
|
||||
}
|
||||
}
|
||||
|
||||
#[cfg(test)]
|
||||
mod tests {
|
||||
use super::*;
|
||||
|
||||
// --- Point ---
|
||||
|
||||
#[test]
|
||||
fn point_distance_3_4_5() {
|
||||
let a = Point::new(0.0, 0.0);
|
||||
let b = Point::new(3.0, 4.0);
|
||||
assert!((a.distance(b) - 5.0).abs() < 1e-5);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn point_bearing_east_is_zero() {
|
||||
let origin = Point::new(0.0, 0.0);
|
||||
let east = Point::new(1.0, 0.0);
|
||||
// delta_y=0, delta_x=1 → atan2(0,1)=0° → bearing=0°
|
||||
assert!((origin.bearing(east) - 0.0).abs() < 1e-4);
|
||||
}
|
||||
|
||||
// --- random_points ---
|
||||
|
||||
#[test]
|
||||
fn random_points_count_and_bounds() {
|
||||
let mut xb = Xenobalanus::new();
|
||||
xb.random_points((0.0, 0.0), 10.0, 100);
|
||||
let pts = xb.points();
|
||||
assert_eq!(pts.len(), 100);
|
||||
for (x, y) in pts {
|
||||
assert!(x >= -5.0 && x <= 5.0, "x={x} out of [-5, 5]");
|
||||
assert!(y >= -5.0 && y <= 5.0, "y={y} out of [-5, 5]");
|
||||
}
|
||||
}
|
||||
|
||||
// --- delaunay ---
|
||||
|
||||
fn unit_square() -> Vec<Point> {
|
||||
vec![
|
||||
Point::new(0.0, 0.0),
|
||||
Point::new(1.0, 0.0),
|
||||
Point::new(1.0, 1.0),
|
||||
Point::new(0.0, 1.0),
|
||||
]
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn delaunay_four_points_two_triangles() {
|
||||
let mut xb = Xenobalanus::new();
|
||||
xb.set_points(unit_square());
|
||||
xb.delaunay();
|
||||
// 4 convex points → 2 triangles → 6 indices
|
||||
assert_eq!(xb.triangles_flat().len(), 6);
|
||||
}
|
||||
|
||||
// --- preprocess ---
|
||||
|
||||
#[test]
|
||||
fn preprocess_sequential_builds_edges() {
|
||||
let mut xb = Xenobalanus::new();
|
||||
xb.set_points(unit_square());
|
||||
xb.delaunay();
|
||||
xb.preprocess(0, false);
|
||||
// unit square Delaunay: 4 boundary edges + 1 diagonal = 5
|
||||
assert_eq!(xb.edge_lengths().len(), 5);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn preprocess_parallel_matches_sequential() {
|
||||
let mut xb_seq = Xenobalanus::new();
|
||||
xb_seq.set_points(unit_square());
|
||||
xb_seq.delaunay();
|
||||
xb_seq.preprocess(0, false);
|
||||
|
||||
let mut xb_par = Xenobalanus::new();
|
||||
xb_par.set_points(unit_square());
|
||||
xb_par.delaunay();
|
||||
xb_par.preprocess(0, true);
|
||||
|
||||
assert_eq!(xb_seq.edge_lengths().len(), xb_par.edge_lengths().len());
|
||||
}
|
||||
|
||||
// --- dtscan ---
|
||||
|
||||
#[test]
|
||||
fn dtscan_finds_cluster_in_grid() {
|
||||
let mut xb = Xenobalanus::new();
|
||||
// 3×3 grid with spacing 1.0; diagonal ≈ 1.414
|
||||
let pts: Vec<Point> = (0..3)
|
||||
.flat_map(|i| (0..3).map(move |j| Point::new(i as f32, j as f32)))
|
||||
.collect();
|
||||
xb.set_points(pts);
|
||||
xb.delaunay();
|
||||
xb.preprocess(0, false);
|
||||
// max_closeness=1.5 covers all edges (max diagonal ≈ 1.414)
|
||||
let clusters = xb.dtscan(2, 1.5);
|
||||
assert!(!clusters.is_empty());
|
||||
}
|
||||
|
||||
// --- delfin ---
|
||||
|
||||
#[test]
|
||||
fn delfin_smoke_test() {
|
||||
let mut xb = Xenobalanus::new();
|
||||
xb.random_points((0.0, 0.0), 100.0, 200);
|
||||
xb.delaunay();
|
||||
xb.preprocess(2, false);
|
||||
// just verify it runs without panic
|
||||
let _voids = xb.delfin(0.0, 0.0);
|
||||
}
|
||||
|
||||
// --- readme example ---
|
||||
|
||||
#[test]
|
||||
fn readme_example_pipeline() {
|
||||
// Mirrors the workflow shown in the README exactly.
|
||||
let dots: u32 = 10000;
|
||||
let side_length: f32 = 10000.0;
|
||||
let mut xeno = Xenobalanus::new();
|
||||
xeno.random_points((0.0, 0.0), side_length, dots);
|
||||
|
||||
xeno.delaunay();
|
||||
xeno.preprocess(0, false);
|
||||
|
||||
let min_area: f32 = 1000.0;
|
||||
let min_distance: f32 = 200.0;
|
||||
let void_polygons: Vec<HashSet<usize>> = xeno.delfin(min_area, min_distance);
|
||||
|
||||
let min_pts: usize = 5;
|
||||
let max_closeness: f32 = 100.5;
|
||||
let clusters: Vec<Vec<usize>> = xeno.dtscan(min_pts, max_closeness);
|
||||
|
||||
// With 10 000 uniform random points both algorithms should find results.
|
||||
assert!(!void_polygons.is_empty(), "delfin found no voids");
|
||||
assert!(!clusters.is_empty(), "dtscan found no clusters");
|
||||
}
|
||||
}
|
||||
Loading…
Add table
Add a link
Reference in a new issue