Struct Exact 

pub struct Exact;

Adaptive-precision exact predicates.

Shewchuk’s adaptive floating-point expansions, via the robust crate: a fast floating-point filter first, escalating to exact arithmetic only when the error bound says the sign is not yet determined. Exact, and in the common non-degenerate case barely slower than Fast.

This is the default. Reach for Fast only with a measurement in hand.

Trait Implementations

impl Clone for Exact

fn clone(&self) -> Exact

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Exact

impl Debug for Exact

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

Formats the value using the given formatter.

impl Default for Exact

fn default() -> Exact

Returns the “default value” for a type.

impl Predicates for Exact

fn orient2d(a: P2, b: P2, c: P2) -> Sign

Sign of the area of triangle (a, b, c).

fn orient3d(a: P3, b: P3, c: P3, d: P3) -> Sign

Sign of the volume of tetrahedron (a, b, c, d).

fn incircle(a: P2, b: P2, c: P2, d: P2) -> Sign

Whether d lies inside the circle through a, b, c.

fn insphere(a: P3, b: P3, c: P3, d: P3, e: P3) -> Sign

Whether e lies inside the sphere through a, b, c, d.

fn is_left_of(a: P2, b: P2, c: P2) -> bool

Whether c lies to the left of the directed line a -> b.

fn are_collinear(a: P2, b: P2, c: P2) -> bool

Whether three points are collinear, exactly.

fn are_coplanar(a: P3, b: P3, c: P3, d: P3) -> bool

Whether four points are coplanar, exactly.