Enum ValidityFailure 

pub enum ValidityFailure {
    FewPoints,
    NotClosed,
    SelfIntersection,
    InvalidCoordinate,
    InteriorRingOutside,
    CoordinateOutOfRange,
    Spikes,
    WrongOrientation,
}

Why a geometry failed is_valid_ring / is_valid_polygon.

Mirrors the subset of Boost’s validity_failure_type (algorithms/validity_failure_type.hpp) that the v1 areal validator can produce. The numeric groupings (few-points, not-closed, self-intersections, …) match Boost’s categories.

Variants

FewPoints

Fewer than the 4 points a closed ring needs (3 distinct + the repeated closing vertex). Boost’s failure_few_points.

NotClosed

The ring’s first and last vertices differ — it is not closed. Boost’s failure_not_closed.

SelfIntersection

Two non-adjacent edges of the ring cross, or an edge touches a non-adjacent vertex. Boost’s failure_self_intersections.

InvalidCoordinate

A coordinate is NaN or infinite. Boost’s failure_invalid_coordinate.

InteriorRingOutside

An interior ring is not contained in the exterior ring. Boost’s failure_interior_rings_outside.

CoordinateOutOfRange

A coordinate lies outside the safe arithmetic range (SAFE_ABS_MAX). Past that magnitude the segment-intersection kernel yields OutOfRange and the self-intersection test would silently miss a real crossing, so validity cannot be confirmed. Reported as a distinct failure rather than a bogus “valid” (there is no Boost analogue — Boost’s rescaling policy sidesteps the range limit this no-rescale port trades for).

Spikes

A vertex triple folds back on itself along one line — the ring carries a spike. Boost’s failure_spikes.

WrongOrientation

The ring’s stored vertex order contradicts its declared PointOrder (or the ring has zero area, which admits no orientation). Exterior rings must traverse in their declared order (strategy-level signed area positive); interior rings the opposite. Boost’s failure_wrong_orientation.

Trait Implementations

impl Clone for ValidityFailure

fn clone(&self) -> ValidityFailure

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for ValidityFailure

impl Debug for ValidityFailure

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

Formats the value using the given formatter.

impl Eq for ValidityFailure

impl PartialEq for ValidityFailure

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for ValidityFailure