Enum Sign 

pub enum Sign {
    Positive,
    Negative,
    Collinear,
}

The three possible outcomes of the orientation_2d side test.

Mirrors the +1 / 0 / -1 return of Boost’s side_by_triangle (boost/geometry/strategy/cartesian/side_by_triangle.hpp), named so call sites read as topology rather than as integers.

Variants

Positive

r lies to the left of the directed line p → q (counter-clockwise turn). Boost’s +1, the 'L' case in test/strategies/spherical_side.cpp.

Negative

r lies to the right of the directed line p → q (clockwise turn). Boost’s -1, the 'R' case.

Collinear

p, q, r are collinear (or two of them coincide). Boost’s 0, the '|' case.

Trait Implementations

impl Clone for Sign

fn clone(&self) -> Sign

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Sign

impl Debug for Sign

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

Formats the value using the given formatter.

impl Eq for Sign

impl Hash for Sign

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for Sign

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Sign