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Replace Voronoi diagram with Barycentric dual mesh

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This commit is contained in:
Niklas Korz 2025-03-31 21:05:21 +02:00
parent 542708b439
commit fe9407cbb2
1 changed files with 8 additions and 12 deletions
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20
src/main.rs
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@ -7,7 +7,7 @@ use bevy_vello::{
use fast_poisson::Poisson2D; use fast_poisson::Poisson2D;
use noise::{NoiseFn, Simplex}; use noise::{NoiseFn, Simplex};
use std::{ops::DerefMut, time::SystemTime}; use std::{ops::DerefMut, time::SystemTime};
use voronator::VoronoiDiagram; use voronator::CentroidDiagram;
fn main() { fn main() {
App::new() App::new()
@ -27,27 +27,23 @@ fn draw_map(mut query_scene: Single<(&mut Transform, &mut VelloScene)>) {
let (transform, scene) = query_scene.deref_mut(); let (transform, scene) = query_scene.deref_mut();
scene.reset(); scene.reset();
let grid_size_x = 20.0; let grid_size_x = 120.0;
let grid_size_y = 10.0; let grid_size_y = 60.0;
let points: Vec<_> = Poisson2D::new() let points: Vec<_> = Poisson2D::new()
.with_dimensions([grid_size_x, grid_size_y], 0.2) .with_dimensions([grid_size_x, grid_size_y], 1.0)
.iter() .iter()
.map(|[x, y]| (x, y)) .map(|[x, y]| (x, y))
.collect(); .collect();
let diagram = VoronoiDiagram::<voronator::delaunator::Point>::from_tuple( // Barycentric dual mesh
&(0.0, 0.0), let mesh = CentroidDiagram::<voronator::delaunator::Point>::from_tuple(&points).unwrap();
&(grid_size_x, grid_size_y),
&points,
)
.unwrap();
let seed = SystemTime::now() let seed = SystemTime::now()
.duration_since(SystemTime::UNIX_EPOCH) .duration_since(SystemTime::UNIX_EPOCH)
.unwrap() .unwrap()
.as_secs() as u32; .as_secs() as u32;
let noise = Simplex::new(seed); let noise = Simplex::new(seed);
for cell in diagram.cells() { for cell in &mesh.cells {
let mut first = true; let mut first = true;
let mut path = Vec::new(); let mut path = Vec::new();
let mut center = Point::new(0.0, 0.0); let mut center = Point::new(0.0, 0.0);
@ -85,7 +81,7 @@ fn draw_map(mut query_scene: Single<(&mut Transform, &mut VelloScene)>) {
); );
} }
let scale = 60.0; let scale = 10.0;
transform.scale = Vec3::ONE * scale; transform.scale = Vec3::ONE * scale;
transform.translation = transform.translation =
Vec3::new(-(grid_size_x as f32 / 2.0), grid_size_y as f32 / 2.0, 0.0) * scale; Vec3::new(-(grid_size_x as f32 / 2.0), grid_size_y as f32 / 2.0, 0.0) * scale;