Struct Point 

pub struct Point {
    pub x: f64,
    pub y: f64,
}

A 2D point.

This type represents a point in 2D space. It has the same layout as Vec2, but its meaning is different: Vec2 represents a change in location (for example velocity).

In general, kurbo overloads math operators where it makes sense, for example implementing Affine * Point as the point under the affine transformation. However Point + Point and f64 * Point are not implemented, because the operations do not make geometric sense. If you need to apply these operations, then 1) check what you’re doing makes geometric sense, then 2) use Point::to_vec2 to convert the point to a Vec2.

Fields

x: f64

The x coordinate.

y: f64

The y coordinate.

Implementations

impl Point

pub const ZERO: Point

The point (0, 0).

pub const ORIGIN: Point

The point at the origin; (0, 0).

pub const fn new(x: f64, y: f64) -> Point

Create a new Point with the provided x and y coordinates.

pub const fn to_vec2(self) -> Vec2

Convert this point into a Vec2.

pub fn lerp(self, other: Point, t: f64) -> Point

Linearly interpolate between two points.

pub fn midpoint(self, other: Point) -> Point

Determine the midpoint of two points.

pub fn distance(self, other: Point) -> f64

Euclidean distance.

See Vec2::hypot for the same operation on Vec2.

pub fn distance_squared(self, other: Point) -> f64

Squared Euclidean distance.

See Vec2::hypot2 for the same operation on Vec2.

pub fn round(self) -> Point

Returns a new Point, with x and y rounded to the nearest integer.

Examples

use kurbo::Point;
let a = Point::new(3.3, 3.6).round();
let b = Point::new(3.0, -3.1).round();
assert_eq!(a.x, 3.0);
assert_eq!(a.y, 4.0);
assert_eq!(b.x, 3.0);
assert_eq!(b.y, -3.0);

pub fn ceil(self) -> Point

Returns a new Point, with x and y rounded up to the nearest integer, unless they are already an integer.

Examples

use kurbo::Point;
let a = Point::new(3.3, 3.6).ceil();
let b = Point::new(3.0, -3.1).ceil();
assert_eq!(a.x, 4.0);
assert_eq!(a.y, 4.0);
assert_eq!(b.x, 3.0);
assert_eq!(b.y, -3.0);

pub fn floor(self) -> Point

Returns a new Point, with x and y rounded down to the nearest integer, unless they are already an integer.

Examples

use kurbo::Point;
let a = Point::new(3.3, 3.6).floor();
let b = Point::new(3.0, -3.1).floor();
assert_eq!(a.x, 3.0);
assert_eq!(a.y, 3.0);
assert_eq!(b.x, 3.0);
assert_eq!(b.y, -4.0);

pub fn expand(self) -> Point

Returns a new Point, with x and y rounded away from zero to the nearest integer, unless they are already an integer.

Examples

use kurbo::Point;
let a = Point::new(3.3, 3.6).expand();
let b = Point::new(3.0, -3.1).expand();
assert_eq!(a.x, 4.0);
assert_eq!(a.y, 4.0);
assert_eq!(b.x, 3.0);
assert_eq!(b.y, -4.0);

pub fn trunc(self) -> Point

Returns a new Point, with x and y rounded towards zero to the nearest integer, unless they are already an integer.

Examples

use kurbo::Point;
let a = Point::new(3.3, 3.6).trunc();
let b = Point::new(3.0, -3.1).trunc();
assert_eq!(a.x, 3.0);
assert_eq!(a.y, 3.0);
assert_eq!(b.x, 3.0);
assert_eq!(b.y, -3.0);

pub fn is_finite(self) -> bool

Is this point finite?

pub fn is_nan(self) -> bool

Is this point NaN?

pub fn get_coord(self, axis: Axis) -> f64

Get the member matching the given axis.

pub fn get_coord_mut(&mut self, axis: Axis) -> &mut f64

Get a mutable reference to the member matching the given axis.

pub fn set_coord(&mut self, axis: Axis, value: f64)

Set the member matching the given axis to the given value.

Trait Implementations

impl Add<(f64, f64)> for Point

type Output = Point

The resulting type after applying the + operator.

fn add(self, _: (f64, f64)) -> Point

Performs the + operation.

impl Add<Vec2> for Point

type Output = Point

The resulting type after applying the + operator.

fn add(self, other: Vec2) -> Point

Performs the + operation.

impl AddAssign<(f64, f64)> for Point

fn add_assign(&mut self, _: (f64, f64))

Performs the += operation.

impl AddAssign<Vec2> for Point

fn add_assign(&mut self, other: Vec2)

Performs the += operation.

impl Clone for Point

fn clone(&self) -> Point

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Point

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

Formats the value using the given formatter.

impl Default for Point

fn default() -> Point

Returns the “default value” for a type.

impl Display for Point

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

Formats the value using the given formatter.

impl From<(f32, f32)> for Point

fn from(v: (f32, f32)) -> Point

Converts to this type from the input type.

impl From<(f64, f64)> for Point

fn from(v: (f64, f64)) -> Point

Converts to this type from the input type.

impl Mul<Point> for Affine

type Output = Point

The resulting type after applying the * operator.

fn mul(self, other: Point) -> Point

Performs the * operation.

impl Mul<Point> for TranslateScale

type Output = Point

The resulting type after applying the * operator.

fn mul(self, other: Point) -> Point

Performs the * operation.

impl PartialEq for Point

fn eq(&self, other: &Point) -> 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 Sub<(f64, f64)> for Point

type Output = Point

The resulting type after applying the - operator.

fn sub(self, _: (f64, f64)) -> Point

Performs the - operation.

impl Sub<Vec2> for Point

type Output = Point

The resulting type after applying the - operator.

fn sub(self, other: Vec2) -> Point

Performs the - operation.

impl Sub for Point

type Output = Vec2

The resulting type after applying the - operator.

fn sub(self, other: Point) -> Vec2

Performs the - operation.

impl SubAssign<(f64, f64)> for Point

fn sub_assign(&mut self, _: (f64, f64))

Performs the -= operation.

impl SubAssign<Vec2> for Point

fn sub_assign(&mut self, other: Vec2)

Performs the -= operation.

impl Copy for Point

impl StructuralPartialEq for Point