Struct de_pathing::chain::PointChain

pub(crate) struct PointChain {
    prev: Option<Rc<Self>>,
    point: Point<f32>,
    length: f32,
}

A linked list of points which keeps track of its length in meters.

Fields

prev: Option<Rc<Self>>

point: Point<f32>

length: f32

Implementations

impl PointChain

pub(crate) fn extended(chain: &Rc<Self>, point: Point<f32>) -> Self

Creates a new point with a given predecessor.

Arguments

• chain - reference to a previous point to be used as an immediate predecessor. The reference is cloned with Rc::clone.

• point - extension point. This point must differ from the last point in chain

pub(crate) fn first(point: Point<f32>) -> Self

Creates a new point with no predecessors.

fn new(prev: Option<Rc<Self>>, point: Point<f32>, length: f32) -> Self

pub(crate) fn prev(&self) -> Option<&Rc<Self>>

Returns previous point or None if this is the first point.

pub(crate) fn point(&self) -> Point<f32>

pub(crate) fn length(&self) -> f32

Returns length of the point chain in meters. It is equal to the sum of distances of individual points.

pub(crate) fn iter(&self) -> Predecessors<'_>

Returns an iterator over points in this linked list. The iterator starts at self and traverses all predecessors.

pub(crate) fn to_path(&self) -> Path

Converts point chain to a path.

Trait Implementations

impl Clone for PointChain

fn clone(&self) -> PointChain

Returns a copy of the value.

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

Performs copy-assignment from source.