Enum ParameterSpan 

pub enum ParameterSpan {
    BeforeStart,
    AtStart,
    Interior,
    AtEnd,
    BeyondEnd,
}

Sign classification of the intersection parameter t = t_num/den relative to the segment span [0, 1], decided exactly. This lets a caller tell whether the plane crossing falls within the segment (p, q) (t ∈ [0,1]) versus on the infinite-line extension — without rounding t.

Variants

BeforeStart

t < 0: crossing is before p.

AtStart

t = 0: crossing is exactly at p.

Interior

0 < t < 1: crossing is strictly inside the segment.

AtEnd

t = 1: crossing is exactly at q.

BeyondEnd

t > 1: crossing is beyond q.

Trait Implementations

impl Clone for ParameterSpan

fn clone(&self) -> ParameterSpan

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ParameterSpan

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

Formats the value using the given formatter.

impl PartialEq for ParameterSpan

fn eq(&self, other: &ParameterSpan) -> 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 ParameterSpan

impl Eq for ParameterSpan

impl StructuralPartialEq for ParameterSpan