Struct emath::Rot2

#[repr(C)]
pub struct Rot2 {
    s: f32,
    c: f32,
}

Represents a rotation in the 2D plane.

A rotation of 𝞃/4 = 90° rotates the X axis to the Y axis.

Normally a Rot2 is normalized (unit-length). If not, it will also scale vectors.

Fields

s: f32

angle.sin()

c: f32

angle.cos()

Implementations

impl Rot2

pub const IDENTITY: Self = _

The identity rotation: nothing rotates

pub fn from_angle(angle: f32) -> Self

Angle is clockwise in radians. A 𝞃/4 = 90° rotation means rotating the X axis to the Y axis.

pub fn angle(self) -> f32

pub fn length(self) -> f32

The factor by which vectors will be scaled.

pub fn length_squared(self) -> f32

pub fn is_finite(self) -> bool

pub fn inverse(self) -> Self

pub fn normalized(self) -> Self

Trait Implementations

impl Clone for Rot2

fn clone(&self) -> Rot2

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Rot2

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

Formats the value using the given formatter.

impl Default for Rot2

Identity rotation

fn default() -> Self

Identity rotation

impl Div<f32> for Rot2

Scales the rotor.

type Output = Rot2

The resulting type after applying the / operator.

fn div(self, r: f32) -> Self

Performs the / operation.

impl Mul<Rot2> for f32

Scales the rotor.

type Output = Rot2

The resulting type after applying the * operator.

fn mul(self, r: Rot2) -> Rot2

Performs the * operation.

impl Mul<Vec2> for Rot2

Rotates (and maybe scales) the vector.

type Output = Vec2

The resulting type after applying the * operator.

fn mul(self, v: Vec2) -> Vec2

Performs the * operation.

impl Mul<f32> for Rot2

Scales the rotor.

type Output = Rot2

The resulting type after applying the * operator.

fn mul(self, r: f32) -> Self

Performs the * operation.

impl Mul for Rot2

type Output = Rot2

The resulting type after applying the * operator.

fn mul(self, r: Self) -> Self

Performs the * operation.

impl PartialEq for Rot2

fn eq(&self, other: &Rot2) -> 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 Zeroable for Rot2

fn zeroed() -> Self

Calls zeroed.

impl Copy for Rot2

impl Pod for Rot2

impl StructuralPartialEq for Rot2