monstertruck

Multifarious Omnificence, Nomenclature Standardized, Terminology Enhanced & Refactored Truck – a Rust Cad Kernel.

Meta-crate that re-exports all monstertruck-* sub-crates via feature flags. Enable only what you need, or use full for everything.

Quick Start

[dependencies]
monstertruck = { version = "0.2", features = ["full"] }

Example – spheres on cube corners with booleans and fillet

Place 1/3-unit spheres on all 8 corners of a unit cube. Subtract four along one tetrahedral diagonal, union the other four, then round-fillet all edges. See examples/filleted-spheres-cube.rs for the full runnable version with STEP export.

use monstertruck_modeling::*;
use monstertruck_solid::{difference, fillet_edges, or, FilletOptions};
use std::f64::consts::PI;

fn sphere(center: Point3, radius: f64) -> Solid {
    let top = builder::vertex(Point3::new(0.0, radius, 0.0));
    let wire: Wire = builder::revolve(
        &top,
        Point3::origin(),
        Vector3::unit_x(),
        builder::SweepAngle::Partial(Rad(PI)),
        3,
    );
    let shell = builder::cone(&wire, Vector3::unit_y(), Rad(7.0), 4);
    builder::translated(&Solid::new(vec![shell]), center.to_vec())
}

fn main() -> anyhow::Result<()> {
    let tol = 0.01;
    let r = 1.0 / 3.0;

    // Unit cube at origin.
    let v = builder::vertex(Point3::origin());
    let cube = builder::extrude(
        &builder::extrude(&builder::extrude(&v, Vector3::unit_x()), Vector3::unit_y()),
        Vector3::unit_z(),
    );

    // Tetrahedral group A -- subtract.
    let subtract = [
        Point3::new(0.0, 0.0, 0.0), Point3::new(1.0, 1.0, 0.0),
        Point3::new(1.0, 0.0, 1.0), Point3::new(0.0, 1.0, 1.0),
    ];
    // Tetrahedral group B -- union.
    let unite = [
        Point3::new(1.0, 0.0, 0.0), Point3::new(0.0, 1.0, 0.0),
        Point3::new(0.0, 0.0, 1.0), Point3::new(1.0, 1.0, 1.0),
    ];

    let mut body = cube;
    for &c in &subtract {
        body = difference(&body, &sphere(c, r), tol)
            .map_err(|e| anyhow::anyhow!("difference failed at {c:?}: {e}"))?;
    }
    for &c in &unite {
        body = or(&body, &sphere(c, r), tol)
            .map_err(|e| anyhow::anyhow!("union failed at {c:?}: {e}"))?;
    }

    // Fillet all edges.
    let mut shell = body.into_boundaries().pop().unwrap();
    let edge_ids: Vec<_> = shell
        .iter()
        .flat_map(|face| face.edge_iter())
        .map(|e| e.id())
        .collect();
    fillet_edges(&mut shell, &edge_ids, Some(&FilletOptions::constant(0.05)))?;

    let result = Solid::new(vec![shell]);
    std::fs::write("output.json", serde_json::to_vec_pretty(&result)?)?;
    Ok(())
}

Features

Bundles

Re-exported Modules

Each enabled feature exposes a top-level module:

monstertruck::core        // always available
monstertruck::modeling    // with "modeling"
monstertruck::meshing     // with "meshing"
monstertruck::geometry    // with "geometry"
// ... etc.

License

Apache License 2.0