Struct kurbo::TranslateScale

pub struct TranslateScale {
    translation: Vec2,
    scale: f64,
}

A transformation including scaling and translation.

If the translation is (x, y) and the scale is s, then this transformation represents this augmented matrix:

| s 0 x |
| 0 s y |
| 0 0 1 |

See Affine for more details about the equivalence with augmented matrices.

Various multiplication ops are defined, and these are all defined to be consistent with matrix multiplication. Therefore, TranslateScale * Point is defined but not the other way around.

Also note that multiplication is not commutative. Thus, TranslateScale::scale(2.0) * TranslateScale::translate(Vec2::new(1.0, 0.0)) has a translation of (2, 0), while TranslateScale::translate(Vec2::new(1.0, 0.0)) * TranslateScale::scale(2.0) has a translation of (1, 0). (Both have a scale of 2; also note that the first case can be written 2.0 * TranslateScale::translate(Vec2::new(1.0, 0.0)) as this case has an implicit conversion).

This transformation is less powerful than Affine, but can be applied to more primitives, especially including Rect.

Fields

translation: Vec2

scale: f64

Methods

impl TranslateScale

pub const fn new(translation: Vec2, scale: f64) -> TranslateScale

Create a new transformation from translation and scale.

pub const fn scale(s: f64) -> TranslateScale

Create a new transformation with scale only.

pub const fn translate(t: Vec2) -> TranslateScale

Create a new transformation with translation only.

pub fn as_tuple(self) -> (Vec2, f64)

Decompose transformation into translation and scale.

pub fn inverse(self) -> TranslateScale

Compute the inverse transform.

Multiplying a transform with its inverse (either on the left or right) results in the identity transform (modulo floating point rounding errors).

Produces NaN values when scale is zero.

Trait Implementations

impl Add<TranslateScale> for Vec2

type Output = TranslateScale

The resulting type after applying the + operator.

fn add(self, other: TranslateScale) -> TranslateScale

Performs the + operation.

impl Add<Vec2> for TranslateScale

type Output = TranslateScale

The resulting type after applying the + operator.

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

Performs the + operation.

impl AddAssign<Vec2> for TranslateScale

fn add_assign(&mut self, other: Vec2)

Performs the += operation.

impl Clone for TranslateScale

fn clone(&self) -> TranslateScale

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Copy for TranslateScale

impl Debug for TranslateScale

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

Formats the value using the given formatter.

impl Default for TranslateScale

fn default() -> TranslateScale

Returns the "default value" for a type.

impl From<TranslateScale> for Affine

fn from(ts: TranslateScale) -> Affine

Performs the conversion.

impl<'a> Mul<&'a BezPath> for TranslateScale

type Output = BezPath

The resulting type after applying the * operator.

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

Performs the * operation.

impl Mul<BezPath> for TranslateScale

type Output = BezPath

The resulting type after applying the * operator.

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

Performs the * operation.

impl Mul<Circle> for TranslateScale

type Output = Circle

The resulting type after applying the * operator.

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

Performs the * operation.

impl Mul<CubicBez> for TranslateScale

type Output = CubicBez

The resulting type after applying the * operator.

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

Performs the * operation.

impl Mul<Line> for TranslateScale

type Output = Line

The resulting type after applying the * operator.

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

Performs the * operation.

impl Mul<PathEl> for TranslateScale

type Output = PathEl

The resulting type after applying the * operator.

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

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 Mul<QuadBez> for TranslateScale

type Output = QuadBez

The resulting type after applying the * operator.

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

Performs the * operation.

impl Mul<Rect> for TranslateScale

type Output = Rect

The resulting type after applying the * operator.

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

Performs the * operation.

impl Mul<RoundedRect> for TranslateScale

type Output = RoundedRect

The resulting type after applying the * operator.

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

Performs the * operation.

impl Mul<TranslateScale> for TranslateScale

type Output = TranslateScale

The resulting type after applying the * operator.

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

Performs the * operation.

impl Mul<TranslateScale> for f64

type Output = TranslateScale

The resulting type after applying the * operator.

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

Performs the * operation.

impl MulAssign<TranslateScale> for TranslateScale

fn mul_assign(&mut self, other: TranslateScale)

Performs the *= operation.

impl Sub<Vec2> for TranslateScale

type Output = TranslateScale

The resulting type after applying the - operator.

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

Performs the - operation.

impl SubAssign<Vec2> for TranslateScale

fn sub_assign(&mut self, other: Vec2)

Performs the -= operation.