11_chamfer/
11_chamfer.rs

1//! Demo of `Solid::chamfer_edges` — mirror of `10_fillet.rs` using bevels:
2//! - All 12 cube edges chamfered uniformly (beveled cube)
3//! - Only top 4 edges chamfered (soft top, sharp base)
4//! - Cylinder top circular edge chamfered (coin with beveled rim)
5
6use cadrum::{DVec3, Error, Solid};
7
8fn beveled_cube(size: f64) -> Result<Solid, Error> {
9	let cube = Solid::cube(size, size, size).translate(-DVec3::ONE * (size / 2.0));
10	let distance = size * 0.2;
11	cube.chamfer_edges(distance, cube.iter_edge())
12}
13
14fn beveled_top_cube(size: f64) -> Result<Solid, Error> {
15	let cube = Solid::cube(size, size, size).translate(-DVec3::ONE * (size / 2.0));
16	let distance = size * 0.2;
17	// Top cap boundary: a closed circular edge whose start == end lives at z = h.
18	let top_edges = cube
19		.iter_edge()
20		.filter(|e| [e.start_point(), e.end_point()].iter().all(|p| (p.z - size / 2.0).abs() < 1e-6));
21	cube.chamfer_edges(distance, top_edges)
22}
23
24fn beveled_coin(radius: f64, height: f64) -> Result<Solid, Error> {
25	let cyl = Solid::cylinder(radius, DVec3::Z, height);
26	let distance = height * 0.3;
27	// Top cap boundary: a closed circular edge whose start == end lives at z = h.
28	let top_circle = cyl
29		.iter_edge()
30		.filter(|e| [e.start_point(), e.end_point()].iter().all(|p| (p.z - height).abs() < 1e-6));
31	cyl.chamfer_edges(distance, top_circle)
32}
33
34fn main() -> Result<(), Error> {
35	let example_name = std::path::Path::new(file!()).file_stem().unwrap().to_str().unwrap();
36
37	let result = [
38		beveled_cube(8.0)?.color("#d0a878"),
39		beveled_top_cube(8.0)?.color("#6fbf73").translate(DVec3::X * 12.0),
40		beveled_coin(4.0, 2.0)?.color("#0052ff").translate(DVec3::X * 24.0),
41	];
42
43	let mut f = std::fs::File::create(format!("{example_name}.step")).expect("failed to create STEP file");
44	cadrum::write_step(&result, &mut f).expect("failed to write STEP");
45
46	let mut f = std::fs::File::create(format!("{example_name}.svg")).expect("failed to create SVG file");
47	cadrum::mesh(&result, 0.2).and_then(|m| m.write_svg(DVec3::new(1.0, 1.0, 2.0), DVec3::Z, true, true, &mut f)).expect("failed to write SVG");
48
49	println!("wrote {example_name}.step / {example_name}.svg");
50	Ok(())
51}
11_chamfer/11_chamfer.rs

11_chamfer/
11_chamfer.rs
