Struct ArgCmp 

pub struct ArgCmp(/* private fields */);

2次元座標の偏角順

Examples

use arg_cmp::ArgCmp;

let north = (0, 1);
let south = (0, -1);
let east = (1, 0);
let west = (-1, 0);
let mut points = vec![north, south, east, west];

points.sort_by_key(|&(x, y)| ArgCmp::new(x, y));

// 0°, 90°, 180°, 270°
assert_eq!(points, vec![(1, 0), (0, 1), (-1, 0), (0, -1)]);

偏角が等しい例

use arg_cmp::ArgCmp;

assert!(ArgCmp::new(1, 0).cmp(&ArgCmp::new(1, 0)).is_eq());
assert!(ArgCmp::new(1, 0).cmp(&ArgCmp::new(2, 0)).is_eq());

Implementations

impl ArgCmp

pub fn new(x: i64, y: i64) -> Self

Panics

if (x, y) is origin

pub fn x(&self) -> i64

pub fn y(&self) -> i64

pub fn quadrant(&self) -> Quadrant

象限を返す

Examples

use arg_cmp::{ArgCmp, Quadrant};

let north_east = ArgCmp::new(1, 1);
let north_west = ArgCmp::new(-1, 1);
let south_west = ArgCmp::new(-1, -1);
let south_east = ArgCmp::new(1, -1);

assert_eq!(north_east.quadrant(), Quadrant::First);
assert_eq!(north_west.quadrant(), Quadrant::Second);
assert_eq!(south_west.quadrant(), Quadrant::Third);
assert_eq!(south_east.quadrant(), Quadrant::Fourth);

Trait Implementations

impl Clone for ArgCmp

fn clone(&self) -> ArgCmp

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ArgCmp

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

Formats the value using the given formatter.

impl Ord for ArgCmp

fn cmp(&self, other: &Self) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for ArgCmp

fn eq(&self, other: &ArgCmp) -> 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 PartialOrd for ArgCmp

fn partial_cmp(&self, other: &Self) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Copy for ArgCmp

impl Eq for ArgCmp

impl StructuralPartialEq for ArgCmp