Enum CurveIntersectionDegeneracy

#[non_exhaustive]
pub enum CurveIntersectionDegeneracy {
    PointContact,
    Tangency,
    Overlap,
    Unresolved,
    BoundaryCrossing,
}

Singular or not-yet-isolated curve relationship.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

PointContact

A structurally proven contact involving a zero-length curve.

Tangency

A structurally proven endpoint tangency.

Overlap

A structurally proven positive-dimensional overlap.

Unresolved

Candidate boxes remain but no supported proof classified them.

BoundaryCrossing

A transverse contact proven to sit on a boundary shared by adjacent cells.

Strict-interior Krawczyk isolation cannot prove a root that lies exactly on a cell edge, so a crossing at an interior knot would otherwise be reported as an unresolved fragment per incident cell. This class states the positive fact instead: the residual is not excluded and the tangents are certainly NOT parallel, so a transverse crossing exists in the fused boundary box and is owned by it exactly once.

Trait Implementations

impl Clone for CurveIntersectionDegeneracy

fn clone(&self) -> CurveIntersectionDegeneracy

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for CurveIntersectionDegeneracy

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl PartialEq for CurveIntersectionDegeneracy

fn eq(&self, other: &CurveIntersectionDegeneracy) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for CurveIntersectionDegeneracy

impl Eq for CurveIntersectionDegeneracy

impl StructuralPartialEq for CurveIntersectionDegeneracy