Struct Polygon 

pub struct Polygon<T>(pub Vec<T>);

A closed curve composed of a chain of line segments.

The polygon is represented as a list of points, or vertices, with each pair of consecutive vertices, as well as the first and last vertex, sharing an edge.

Tuple Fields

0: Vec<T>

Implementations

impl<T> Polygon<T>

pub fn new(verts: impl IntoIterator<Item = T>) -> Self

pub fn edges(&self) -> impl Iterator<Item = Edge<&T>> + '_

Returns an iterator over the edges of self.

Given a polygon ABC…XYZ, returns the edges AB, BC, …, XY, YZ, ZA. If self has zero or one vertices, returns an empty iterator.

Examples

use retrofire_core::geom::{Polygon, Edge};
use retrofire_core::math::{Point2, pt2};

let pts: [Point2; _] = [pt2(0.0, 0.0), pt2(1.0, 1.0), pt2(2.0, 1.0)];

let poly = Polygon::new(pts);
let mut edges = poly.edges();

assert_eq!(edges.next(), Some(Edge(&pts[0], &pts[1])));
assert_eq!(edges.next(), Some(Edge(&pts[1], &pts[2])));
assert_eq!(edges.next(), Some(Edge(&pts[2], &pts[0])));
assert_eq!(edges.next(), None);

Trait Implementations

impl<T: Clone> Clone for Polygon<T>

fn clone(&self) -> Polygon<T>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<T: Debug> Debug for Polygon<T>

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

Formats the value using the given formatter.

impl<T: PartialEq> PartialEq for Polygon<T>

fn eq(&self, other: &Polygon<T>) -> 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<T: Eq> Eq for Polygon<T>

impl<T> StructuralPartialEq for Polygon<T>