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use bevy::window::WindowResolution;
use bevy::{
color::palettes::css::{BLUE, GREEN, ORANGE, PURPLE, RED, WHITE},
mesh::{Indices, PrimitiveTopology, VertexAttributeValues},
prelude::*,
};
use bevy_infinite_grid::InfiniteGridPlugin;
use bevy_normal_material::{material::NormalMaterial, plugin::NormalMaterialPlugin};
use bevy_panorbit_camera::{PanOrbitCamera, PanOrbitCameraPlugin};
use bevy_points::{mesh::PointsMesh, plugin::PointsPlugin, prelude::PointsMaterial};
use boolean::CurveVariant;
use itertools::Itertools;
use materials::*;
use nalgebra::{Rotation2, Translation2};
mod boolean;
mod materials;
pub mod misc;
mod systems;
use curvo::prelude::*;
use operation::BooleanOperation;
use systems::screenshot_on_spacebar;
fn main() {
App::new()
.add_plugins(DefaultPlugins.set(WindowPlugin {
primary_window: Some(Window {
resolution: WindowResolution::new(640, 480),
..Default::default()
}),
..Default::default()
}))
.add_plugins(LineMaterialPlugin)
.add_plugins(InfiniteGridPlugin)
.add_plugins(PanOrbitCameraPlugin)
.add_plugins(PointsPlugin)
.add_plugins(NormalMaterialPlugin)
.add_plugins(AppPlugin)
.run();
}
struct AppPlugin;
impl Plugin for AppPlugin {
fn build(&self, app: &mut bevy::prelude::App) {
app.add_systems(Startup, setup)
.add_systems(Update, screenshot_on_spacebar);
}
}
const OPTION: CurveIntersectionSolverOptions<f64> = CurveIntersectionSolverOptions {
minimum_distance: 1e-4,
knot_domain_division: 500,
max_iters: 1000,
step_size_tolerance: 1e-8,
cost_tolerance: 1e-10,
};
fn setup(
mut commands: Commands,
mut meshes: ResMut<Assets<Mesh>>,
mut line_materials: ResMut<Assets<LineMaterial>>,
mut points_materials: ResMut<Assets<PointsMaterial>>,
mut normal_materials: ResMut<'_, Assets<NormalMaterial>>,
) {
commands.spawn((
Projection::Perspective(PerspectiveProjection {
near: 1e-3,
..Default::default()
}),
Transform::from_translation(Vec3::new(0., 0., 5.)),
PanOrbitCamera::default(),
));
// let (subject, clip) = boolean::circle_rectangle_case();
// let (subject, clip) = boolean::periodic_interpolation_case();
// let (subject, clip) = boolean::island_case();
// let (subject, clip) = boolean::compound_circle_x_rectangle_case();
// let (subject, clip) = boolean::rounded_rectangle_x_rectangle_case();
let (subject, clip) = boolean::rectangular_annulus_x_rectangle_case();
// let (subject, clip) = boolean::rounded_t_shape_x_rectangle_case();
// let (subject, clip) = boolean::rounded_t_shape_x_t_shape_case();
// let (subject, clip) = boolean::rectangular_annulus_x_rectangular_annulus_case();
let delta: f64 = 0.0;
let trans = Translation2::new(delta.cos(), 0.) * Rotation2::new(delta);
let clip = clip.transformed(&trans.into());
let spawn_curve = |commands: &mut Commands,
meshes: &mut ResMut<Assets<Mesh>>,
line_materials: &mut ResMut<Assets<LineMaterial>>,
transform: Transform,
curve: &CurveVariant,
color: Option<Color>,
sequence: bool| {
let curves: Vec<&NurbsCurve2D<f64>> = match curve {
CurveVariant::Curve(c) => vec![c],
CurveVariant::Compound(c) => c.spans().iter().collect_vec(),
CurveVariant::Region(r) => {
let ex = r.exterior().spans().iter().collect_vec();
r.interiors()
.iter()
.flat_map(|i| i.spans())
.chain(ex)
.collect()
}
};
curves.iter().for_each(|curve| {
let samples = curve.tessellate(Some(1e-8));
let line_vertices = samples
.iter()
.map(|p| p.cast::<f32>())
.map(|p| [p.x, p.y, 0.])
.collect_vec();
let n = line_vertices.len();
let line = Mesh::new(PrimitiveTopology::LineStrip, default()).with_inserted_attribute(
Mesh::ATTRIBUTE_POSITION,
VertexAttributeValues::Float32x3(line_vertices),
);
let line = if sequence {
let start = RED;
let end = GREEN;
line.with_inserted_attribute(
Mesh::ATTRIBUTE_COLOR,
VertexAttributeValues::Float32x4(
(0..n)
.map(|i| {
let t = i as f32 / (n - 1) as f32;
let c0 = start * (1. - t);
let c1 = end * t;
let c = c0 + c1;
c.to_f32_array()
})
.collect(),
),
)
} else {
line
};
commands.spawn((
Mesh3d(meshes.add(line)),
MeshMaterial3d(line_materials.add(LineMaterial {
color: color.unwrap_or(WHITE.with_alpha(0.25).into()),
opacity: 0.6,
alpha_mode: AlphaMode::Blend,
})),
transform,
));
});
};
let basis = Transform::from_xyz(0., 5., 0.);
spawn_curve(
&mut commands,
&mut meshes,
&mut line_materials,
basis,
&subject,
None,
false,
);
spawn_curve(
&mut commands,
&mut meshes,
&mut line_materials,
basis,
&clip,
None,
false,
);
[&subject, &clip].iter().enumerate().for_each(|(i, c)| {
let (start, end) = c.end_points();
commands
.spawn((
Mesh3d(
meshes.add(PointsMesh {
vertices: [start, end]
.iter()
.map(|p| p.cast::<f32>().coords.to_homogeneous().into())
.collect(),
colors: Some(if i == 0 {
vec![ORANGE.into(), ORANGE.into()]
} else {
vec![PURPLE.into(), PURPLE.into()]
}),
}),
),
MeshMaterial3d(points_materials.add(PointsMaterial {
settings: bevy_points::material::PointsShaderSettings {
color: WHITE.into(),
point_size: 0.05,
..Default::default()
},
circle: true,
..Default::default()
})),
basis,
))
.insert(Name::new("End points"));
});
let ops = [
BooleanOperation::Union,
BooleanOperation::Intersection,
BooleanOperation::Difference,
];
let n = ops.len();
let inv_n = 1. / n as f32;
let on = inv_n * 0.5;
let h = n as f32 * 7.5;
ops.into_iter().enumerate().for_each(|(i, op)| {
let fi = i as f32 * inv_n + on - 0.5;
let tr = Transform::from_xyz(fi * h, 0., 0.);
let clip = subject.boolean(op, &clip, Some(OPTION.clone())).unwrap();
let regions = clip.regions();
let info = clip.info();
info.spans().iter().enumerate().for_each(|(i, span)| {
spawn_curve(
&mut commands,
&mut meshes,
&mut line_materials,
tr * Transform::from_xyz(0., 0., i as f32 * 1e-1),
&span.clone().into(),
Some(GREEN.into()),
true,
);
});
info.node_chunks()
.iter()
.enumerate()
.for_each(|(i, (a, b))| {
let tr = Transform::from_xyz(0., 0., i as f32 * 1e-1);
commands.spawn((
Mesh3d(
meshes.add(PointsMesh {
vertices: [a.0, b.0]
.iter()
.map(|p| p.cast::<f32>().coords.to_homogeneous().into())
.collect(),
colors: Some([RED.into(), BLUE.into()].to_vec()),
}),
),
MeshMaterial3d(points_materials.add(PointsMaterial {
settings: bevy_points::material::PointsShaderSettings {
point_size: 0.05,
..Default::default()
},
circle: true,
..Default::default()
})),
tr,
));
let line = Mesh::new(PrimitiveTopology::LineStrip, default())
.with_inserted_attribute(
Mesh::ATTRIBUTE_POSITION,
VertexAttributeValues::Float32x3(
[a.0, b.0]
.iter()
.map(|pt| pt.coords.cast::<f32>().to_homogeneous().into())
.collect(),
),
);
commands.spawn((
Mesh3d(meshes.add(line)),
MeshMaterial3d(line_materials.add(LineMaterial {
color: Color::WHITE,
..Default::default()
})),
tr,
));
});
regions.iter().for_each(|region| {
let tess = region.tessellate(None);
if let Ok(tess) = tess {
let mesh = Mesh::new(PrimitiveTopology::TriangleList, default())
.with_inserted_attribute(
Mesh::ATTRIBUTE_POSITION,
VertexAttributeValues::Float32x3(
tess.vertices()
.iter()
.map(|p| p.cast::<f32>().coords.to_homogeneous().into())
.collect(),
),
)
.with_inserted_attribute(
Mesh::ATTRIBUTE_NORMAL,
VertexAttributeValues::Float32x3(
tess.vertices().iter().map(|_p| [0., 0., 1.]).collect(),
),
)
.with_inserted_indices(Indices::U32(
tess.faces()
.iter()
.flat_map(|f| f.iter().map(|i| *i as u32))
.collect(),
));
commands
.spawn((
Mesh3d(meshes.add(mesh)),
MeshMaterial3d(normal_materials.add(NormalMaterial {
cull_mode: None,
..Default::default()
})),
tr,
))
.insert(Name::new("Triangulation"));
}
/*
region
.exterior()
.spans()
.iter()
.enumerate()
.for_each(|(i, curve)| {
spawn_curve(
&mut commands,
&mut meshes,
&mut line_materials,
tr * Transform::from_xyz(0., 0., i as f32 * 1e-1),
&curve.clone().into(),
Some(Color::GREEN),
true,
);
});
region.interiors().iter().for_each(|interior| {
interior.spans().iter().for_each(|curve| {
spawn_curve(
&mut commands,
&mut meshes,
&mut line_materials,
tr,
&curve.clone().into(),
Some(Color::RED),
false,
);
});
});
*/
});
});
}