Struct DirVec2

pub struct DirVec2 { /* private fields */ }

A 2-D vector that separates direction from length.

This may be used rather than Vec2 if the length may be at or near 0.0 but the direction is still important, or to distinguish between a vector with a negative length and a vector in the opposite direction of positive length. Such distinctions are necessary when describing the normal distance between PlacedShapes.

Implementations

impl DirVec2

pub fn new(dir: Vec2, len: f64) -> DirVec2

Constructs a vector with the given direction dir and length len.

dir is normalized before being set.

pub fn dir(&self) -> Vec2

Returns the direction as a unit vector.

pub fn len(&self) -> f64

Returns the length of the vector. May be positive or negative.

pub fn flip(&self) -> DirVec2

Returns a new vector with the same len but reversed dir.

Trait Implementations

impl Clone for DirVec2

fn clone(&self) -> DirVec2

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for DirVec2

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

Formats the value using the given formatter.

impl From<DirVec2> for Vec2

fn from(dir_vec: DirVec2) -> Vec2

Converts to this type from the input type.

impl PartialEq for DirVec2

fn eq(&self, other: &DirVec2) -> 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 Copy for DirVec2

impl StructuralPartialEq for DirVec2