truck-shapeops 0.4.0

Provides boolean operations to Solid
Documentation 
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use super::*;
use shell::ShellCondition;
use truck_geometry::prelude::*;
use truck_topology::Vertex;
const TOL: f64 = 0.05;

fn line(v0: &Vertex<Point3>, v1: &Vertex<Point3>) -> Edge<Point3, BSplineCurve<Point3>> {
    let curve = BSplineCurve::new(KnotVec::bezier_knot(1), vec![v0.point(), v1.point()]);
    Edge::new(v0, v1, curve)
}

fn parabola(
    v0: &Vertex<Point3>,
    v1: &Vertex<Point3>,
    pt: Point3,
) -> Edge<Point3, BSplineCurve<Point3>> {
    let curve = BSplineCurve::new(KnotVec::bezier_knot(2), vec![v0.point(), pt, v1.point()]);
    Edge::new(v0, v1, curve)
}

#[test]
fn divide_plane_test() {
    let v = Vertex::news([
        Point3::new(0.0, 0.0, 0.0),
        Point3::new(0.0, 4.0, 0.0),
        Point3::new(-1.0, 1.0, 0.0),
        Point3::new(-1.0, 3.0, 0.0),
        Point3::new(1.0, 1.0, 0.0),
        Point3::new(1.0, 3.0, 0.0),
    ]);
    let edge = vec![
        parabola(&v[0], &v[1], Point3::new(-4.0, 2.0, 0.0)),
        parabola(&v[0], &v[1], Point3::new(4.0, 2.0, 0.0)),
        line(&v[0], &v[1]),
        parabola(&v[2], &v[3], Point3::new(-3.0, 2.0, 0.0)),
        parabola(&v[2], &v[3], Point3::new(-1.0, 2.0, 0.0)),
        parabola(&v[4], &v[5], Point3::new(1.0, 2.0, 0.0)),
        parabola(&v[4], &v[5], Point3::new(3.0, 2.0, 0.0)),
    ];
    let wire: Vec<Wire<_, _>> = vec![
        vec![edge[1].clone(), edge[0].inverse()].into(),
        vec![edge[2].clone(), edge[0].inverse()].into(),
        vec![edge[1].clone(), edge[2].inverse()].into(),
        vec![edge[3].clone(), edge[4].inverse()].into(),
        vec![edge[5].clone(), edge[6].inverse()].into(),
    ];
    let face = Face::new(
        vec![wire[0].clone(), wire[3].clone(), wire[4].clone()],
        Plane::new(
            Point3::origin(),
            Point3::new(1.0, 0.0, 0.0),
            Point3::new(0.0, 1.0, 0.0),
        ),
    );
    let loops: Loops<_, _> = vec![
        BoundaryWire::new(wire[1].clone(), ShapesOpStatus::Or),
        BoundaryWire::new(wire[2].clone(), ShapesOpStatus::And),
        BoundaryWire::new(wire[3].clone(), ShapesOpStatus::Unknown),
        BoundaryWire::new(wire[4].clone(), ShapesOpStatus::Unknown),
    ]
    .into_iter()
    .collect();
    let res = divide_one_face(&face, &loops, 0.01).unwrap();
    assert_eq!(res.len(), 2);
    let (mut or, mut and) = (true, true);
    for (face, status) in res {
        let bdd = face.absolute_boundaries();
        match status {
            ShapesOpStatus::Or => {
                assert_eq!(bdd.len(), 2);
                assert!(bdd[0] == wire[1] || bdd[0] == wire[3]);
                assert!(bdd[1] == wire[1] || bdd[1] == wire[3]);
                assert_ne!(bdd[0], bdd[1]);
                assert!(or);
                or = false;
            }
            ShapesOpStatus::And => {
                assert_eq!(bdd.len(), 2);
                assert!(bdd[0] == wire[2] || bdd[0] == wire[4]);
                assert!(bdd[1] == wire[2] || bdd[1] == wire[4]);
                assert_ne!(bdd[0], bdd[1]);
                assert!(and);
                and = false;
            }
            _ => panic!("There must be no unknown!"),
        }
    }
}

type AlternativeIntersection = crate::alternative::Alternative<
    NurbsCurve<Vector4>,
    IntersectionCurve<PolylineCurve<Point3>, AlternativeSurface>,
>;
type AlternativeSurface = crate::alternative::Alternative<BSplineSurface<Point3>, Plane>;

crate::impl_from!(
    NurbsCurve<Vector4>,
    IntersectionCurve<PolylineCurve<Point3>, AlternativeSurface>
);
crate::impl_from!(BSplineSurface<Point3>, Plane);

fn parabola_surfaces() -> (AlternativeSurface, AlternativeSurface) {
    // define surfaces
    #[rustfmt::skip]
	let ctrl0 = vec![
		vec![Point3::new(-1.0, -1.0, 3.0), Point3::new(-1.0, 0.0, -1.0), Point3::new(-1.0, 1.0, 3.0)],
		vec![Point3::new(0.0, -1.0, -1.0), Point3::new(0.0, 0.0, -5.0), Point3::new(0.0, 1.0, -1.0)],
		vec![Point3::new(1.0, -1.0, 3.0), Point3::new(1.0, 0.0, -1.0), Point3::new(1.0, 1.0, 3.0)],
	];
    #[rustfmt::skip]
	let ctrl1 = vec![
		vec![Point3::new(-1.0, -1.0, -3.0), Point3::new(-1.0, 0.0, 1.0), Point3::new(-1.0, 1.0, -3.0)],
		vec![Point3::new(0.0, -1.0, 1.0), Point3::new(0.0, 0.0, 5.0), Point3::new(0.0, 1.0, 1.0)],
		vec![Point3::new(1.0, -1.0, -3.0), Point3::new(1.0, 0.0, 1.0), Point3::new(1.0, 1.0, -3.0)],
	];
    (
        BSplineSurface::new((KnotVec::bezier_knot(2), KnotVec::bezier_knot(2)), ctrl0).into(),
        BSplineSurface::new((KnotVec::bezier_knot(2), KnotVec::bezier_knot(2)), ctrl1).into(),
    )
}

#[test]
fn independent_intersection() {
    // prepare geoetries
    let arc00: AlternativeIntersection = NurbsCurve::new(BSplineCurve::new(
        KnotVec::bezier_knot(2),
        vec![
            Vector4::new(1.0, 0.0, 1.0, 1.0),
            Vector4::new(0.0, 1.0, 0.0, 0.0),
            Vector4::new(-1.0, 0.0, 1.0, 1.0),
        ],
    ))
    .into();
    let arc01: AlternativeIntersection = NurbsCurve::new(BSplineCurve::new(
        KnotVec::bezier_knot(2),
        vec![
            Vector4::new(-1.0, 0.0, 1.0, 1.0),
            Vector4::new(0.0, -1.0, 0.0, 0.0),
            Vector4::new(1.0, 0.0, 1.0, 1.0),
        ],
    ))
    .into();
    let arc10: AlternativeIntersection = NurbsCurve::new(BSplineCurve::new(
        KnotVec::bezier_knot(2),
        vec![
            Vector4::new(1.0, 0.0, -1.0, 1.0),
            Vector4::new(0.0, 1.0, 0.0, 0.0),
            Vector4::new(-1.0, 0.0, -1.0, 1.0),
        ],
    ))
    .into();
    let arc11: AlternativeIntersection = NurbsCurve::new(BSplineCurve::new(
        KnotVec::bezier_knot(2),
        vec![
            Vector4::new(-1.0, 0.0, -1.0, 1.0),
            Vector4::new(0.0, -1.0, 0.0, 0.0),
            Vector4::new(1.0, 0.0, -1.0, 1.0),
        ],
    ))
    .into();
    let (surface0, surface1) = parabola_surfaces();
    let plane0: AlternativeSurface = Plane::new(
        Point3::new(0.0, 0.0, 1.0),
        Point3::new(1.0, 0.0, 1.0),
        Point3::new(0.0, 1.0, 1.0),
    )
    .into();
    let plane1: AlternativeSurface = Plane::new(
        Point3::new(0.0, 0.0, -1.0),
        Point3::new(1.0, 0.0, -1.0),
        Point3::new(0.0, 1.0, -1.0),
    )
    .into();

    // prepare topologies
    let v00 = Vertex::new(Point3::new(1.0, 0.0, 1.0));
    let v01 = Vertex::new(Point3::new(-1.0, 0.0, 1.0));
    let v10 = Vertex::new(Point3::new(1.0, 0.0, -1.0));
    let v11 = Vertex::new(Point3::new(-1.0, 0.0, -1.0));
    let wire0: Wire<_, _> = vec![Edge::new(&v00, &v01, arc00), Edge::new(&v01, &v00, arc01)].into();
    let wire1: Wire<_, _> = vec![Edge::new(&v10, &v11, arc10), Edge::new(&v11, &v10, arc11)].into();
    let shell0: Shell<_, _, _> = vec![
        Face::new(vec![wire0.clone()], plane0),
        Face::new(vec![wire0], surface0).inverse(),
    ]
    .into();
    assert_eq!(shell0.shell_condition(), ShellCondition::Closed);
    let shell1: Shell<_, _, _> = vec![
        Face::new(vec![wire1.clone()], plane1).inverse(),
        Face::new(vec![wire1], surface1),
    ]
    .into();
    assert_eq!(shell1.shell_condition(), ShellCondition::Closed);
    let poly_shell0 = shell0.triangulation(TOL);
    let poly_shell1 = shell1.triangulation(TOL);

    let LoopsStoreQuadruple {
        geom_loops_store0: loops_store0,
        geom_loops_store1: loops_store1,
        ..
    } = create_loops_stores(&shell0, &poly_shell0, &shell1, &poly_shell1, TOL).unwrap();
    let [and0, or0, unknown0] = divide_faces(&shell0, &loops_store0, TOL)
        .unwrap()
        .and_or_unknown();
    let [and1, or1, unknown1] = divide_faces(&shell1, &loops_store1, TOL)
        .unwrap()
        .and_or_unknown();
    assert_eq!(and0.len(), 1);
    assert_eq!(or0.len(), 1);
    assert_eq!(unknown0.len(), 1);
    assert_eq!(and1.len(), 1);
    assert_eq!(or1.len(), 1);
    assert_eq!(unknown1.len(), 1);

    match unknown0[0].surface() {
        AlternativeSurface::FirstType(_) => panic!("This face must plane!"),
        AlternativeSurface::SecondType(_) => {}
    }
    match unknown1[0].surface() {
        AlternativeSurface::FirstType(_) => panic!("This face must plane!"),
        AlternativeSurface::SecondType(_) => {}
    }

    let and_shell: Shell<_, _, _> = vec![and0[0].clone(), and1[0].clone()].into();
    assert_eq!(and_shell.shell_condition(), ShellCondition::Closed);
}