Struct triangulation::geom::Triangle

pub struct Triangle(pub Point, pub Point, pub Point);

A triangle made of 3 points.

Methods

impl Triangle

pub fn circumradius_sq(self) -> f32

Returns square of the circumcircle radius.

Examples

let t = Triangle(
    Point::new(10.0, 10.0),
    Point::new(10.0, 110.0),
    Point::new(110.0, 10.0)
);
assert!((t.circumradius_sq() - 5000.0) < 1e-6);

pub fn circumcenter(self) -> Point

Returns the circumcenter.

Examples

let t = Triangle(
    Point::new(10.0, 10.0),
    Point::new(10.0, 110.0),
    Point::new(110.0, 10.0)
);
assert!(t.circumcenter().approx_eq(Point::new(60.0, 60.0)));

pub fn orientation(self) -> f32

Returns the cross product of vectors 1--0 and 1--2

Examples

let t = Triangle(
    Point::new(10.0, 10.0),
    Point::new(10.0, 110.0),
    Point::new(110.0, 10.0)
);
assert!(t.orientation() > 0.0);

pub fn is_right_handed(self) -> bool

Returns true if the triangle is right-handed (conter-clockwise order).

pub fn is_left_handed(self) -> bool

Returns true if the triangle is left-handed (clockwise order).

pub fn in_circumcircle(self, point: Point) -> bool

Returns true if the given point lies inside the circumcircle of the triangle.

Examples

let t = Triangle(
    Point::new(10.0, 10.0),
    Point::new(10.0, 110.0),
    Point::new(110.0, 10.0)
);
assert!(t.in_circumcircle(Point::new(30.0, 30.0)));
assert!(!t.in_circumcircle(Point::new(5.0, 5.0)));

Trait Implementations

impl PartialEq<Triangle> for Triangle

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

This method tests for self and other values to be equal, and is used by ==.

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

This method tests for !=.

impl Copy for Triangle

impl Clone for Triangle

fn clone(&self) -> Triangle

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Triangle

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

Formats the value using the given formatter.