Struct kurbo::Affine

pub struct Affine(_);

A 2D affine transform.

Implementations

impl Affine

pub fn new(c: [f64; 6]) -> Affine

Construct an affine transform from coefficients.

If the coefficients are (a, b, c, d, e, f), then the resulting transformation represents this augmented matrix:

| a c e |
| b d f |
| 0 0 1 |

Note that this convention is transposed from PostScript and Direct2D, but is consistent with the Wikipedia formulation of affine transformation as augmented matrix. The idea is that (A * B) * v == A * (B * v), where * is the Mul trait.

pub fn scale(s: f64) -> Affine

An affine transform representing uniform scaling.

pub fn rotate(th: f64) -> Affine

An affine transform representing rotation.

The convention for rotation is that a positive angle rotates a positive X direction into positive Y. Thus, in a Y-down coordinate system (as is common for graphics), it is a clockwise rotation, and in Y-up (traditional for math), it is anti-clockwise.

pub fn translate<V: Into<Vec2>>(p: V) -> Affine

An affine transform representing translation.

pub fn as_coeffs(self) -> [f64; 6]

Get the coefficients of the transform.

Trait Implementations

impl Clone for Affine

fn clone(&self) -> Affine

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Affine

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

Formats the value using the given formatter.

impl Default for Affine

fn default() -> Affine

Returns the “default value” for a type.

impl From<Affine> for ColumnMatrix2x3<f64>

fn from(a: Affine) -> ColumnMatrix2x3<f64>

Converts to this type from the input type.

impl From<ColumnMatrix2x3<f64>> for Affine

fn from(m: ColumnMatrix2x3<f64>) -> Affine

Converts to this type from the input type.

impl Mul<Affine> for Affine

type Output = Affine

The resulting type after applying the * operator.

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

Performs the * operation.

impl Mul<Affine> for f64

type Output = Affine

The resulting type after applying the * operator.

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

Performs the * operation.

impl Mul<BezPath> for Affine

type Output = BezPath

The resulting type after applying the * operator.

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

Performs the * operation.

impl Mul<CubicBez> for Affine

type Output = CubicBez

The resulting type after applying the * operator.

fn mul(self, c: CubicBez) -> CubicBez

Performs the * operation.

impl Mul<Line> for Affine

type Output = Line

The resulting type after applying the * operator.

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

Performs the * operation.

impl Mul<PathEl> for Affine

type Output = PathEl

The resulting type after applying the * operator.

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

Performs the * operation.

impl Mul<QuadBez> for Affine

type Output = QuadBez

The resulting type after applying the * operator.

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

Performs the * operation.

impl Mul<Vec2> for Affine

type Output = Vec2

The resulting type after applying the * operator.

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

Performs the * operation.

impl MulAssign<Affine> for Affine

fn mul_assign(&mut self, other: Affine)

Performs the *= operation.

impl Copy for Affine