Struct Affine 

pub struct Affine(pub [f64; 6]);

A 2D affine map p ↦ (a·x + b·y + c, d·x + e·y + f).

Tuple Fields

0: [f64; 6]

Implementations

impl Affine

pub const IDENTITY: Affine

The identity map.

pub fn apply(&self, (x, y): (f64, f64)) -> (f64, f64)

Maps a point.

pub fn inverse(&self) -> Option<Affine>

The inverse map; None when it is singular.

pub fn then_after(&self, other: &Affine) -> Affine

self ∘ other (apply other first).

pub fn keyframe( center: [f64; 2], position: [f64; 2], scale: [f64; 2], rotation: f64, ) -> Affine

p ↦ position + R(rotation) · diag(scale) · (p − center); rotation in degrees, clockwise on screen (y points down).

Trait Implementations

impl Clone for Affine

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Affine

impl Debug for Affine

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

Formats the value using the given formatter.

impl PartialEq for Affine

fn eq(&self, other: &Self) -> bool

Equality operator ==.

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

Inequality operator !=.

impl Serialize for Affine

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for Affine