Struct piet_common::kurbo::Affine [−]
A 2D affine transform.
Implementations
impl Affine
pub const IDENTITY: Affine
The identity transform.
pub const FLIP_Y: Affine
A transform that is flipped on the y-axis. Useful for converting between y-up and y-down spaces.
pub const FLIP_X: Affine
A transform that is flipped on the x-axis.
pub const 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 const fn scale(s: f64) -> Affine
An affine transform representing uniform scaling.
pub const fn scale_non_uniform(s_x: f64, s_y: f64) -> Affine
An affine transform representing non-uniform scaling with different scale values for x and y
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.
The angle, th
, is expressed in radians.
pub fn translate<V>(p: V) -> Affine where
V: Into<Vec2>,
V: Into<Vec2>,
An affine transform representing translation.
pub fn map_unit_square(rect: Rect) -> Affine
Creates an affine transformation that takes the unit square to the given rectangle.
Useful when you want to draw into the unit square but have your output fill any rectangle.
In this case push the Affine
onto the transform stack.
pub fn as_coeffs(self) -> [f64; 6]
Get the coefficients of the transform.
pub fn determinant(self) -> f64
Compute the determinant of this transform.
pub fn inverse(self) -> Affine
Compute the inverse transform.
Produces NaN values when the determinant is zero.
pub fn transform_rect_bbox(self, rect: Rect) -> Rect
Compute the bounding box of a transformed rectangle.
Returns the minimal Rect
that encloses the given Rect
after affine transformation.
If the transform is axis-aligned, then this bounding box is “tight”, in other words the
returned Rect
is the transformed rectangle.
The returned rectangle always has non-negative width and height.
pub fn is_finite(&self) -> bool
Is this map finite?
pub fn is_nan(&self) -> bool
Is this map NaN?
Trait Implementations
impl Clone for Affine
pub fn clone(&self) -> Affine
pub fn clone_from(&mut self, source: &Self)
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impl Copy for Affine
impl Debug for Affine
impl Default for Affine
impl From<TranslateScale> for Affine
pub fn from(ts: TranslateScale) -> Affine
impl<'a> Mul<&'a BezPath> for Affine
type Output = BezPath
The resulting type after applying the *
operator.
pub fn mul(self, other: &BezPath) -> BezPath
impl Mul<Affine> for Affine
type Output = Affine
The resulting type after applying the *
operator.
pub fn mul(self, other: Affine) -> Affine
impl Mul<BezPath> for Affine
type Output = BezPath
The resulting type after applying the *
operator.
pub fn mul(self, other: BezPath) -> BezPath
impl Mul<Circle> for Affine
type Output = Ellipse
The resulting type after applying the *
operator.
pub fn mul(self, other: Circle) -> <Affine as Mul<Circle>>::Output
impl Mul<CubicBez> for Affine
type Output = CubicBez
The resulting type after applying the *
operator.
pub fn mul(self, c: CubicBez) -> CubicBez
impl Mul<Ellipse> for Affine
type Output = Ellipse
The resulting type after applying the *
operator.
pub fn mul(self, other: Ellipse) -> <Affine as Mul<Ellipse>>::Output
impl Mul<Line> for Affine
type Output = Line
The resulting type after applying the *
operator.
pub fn mul(self, other: Line) -> Line
impl Mul<PathEl> for Affine
type Output = PathEl
The resulting type after applying the *
operator.
pub fn mul(self, other: PathEl) -> PathEl
impl Mul<PathSeg> for Affine
type Output = PathSeg
The resulting type after applying the *
operator.
pub fn mul(self, other: PathSeg) -> PathSeg
impl Mul<Point> for Affine
type Output = Point
The resulting type after applying the *
operator.
pub fn mul(self, other: Point) -> Point
impl Mul<QuadBez> for Affine
type Output = QuadBez
The resulting type after applying the *
operator.
pub fn mul(self, other: QuadBez) -> QuadBez
impl MulAssign<Affine> for Affine
pub fn mul_assign(&mut self, other: Affine)
impl PartialEq<Affine> for Affine
impl StructuralPartialEq for Affine
Auto Trait Implementations
impl RefUnwindSafe for Affine
impl Send for Affine
impl Sync for Affine
impl Unpin for Affine
impl UnwindSafe for Affine
Blanket Implementations
impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,
impl<T> Borrow<T> for T where
T: ?Sized,
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T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
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T: ?Sized,
pub fn borrow_mut(&mut self) -> &mut T
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impl<T> From<T> for T
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impl<T, U> Into<U> for T where
U: From<T>,
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U: From<T>,
impl<T> RoundFrom<T> for T
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pub fn round_from(x: T) -> T
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impl<T, U> RoundInto<U> for T where
U: RoundFrom<T>,
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U: RoundFrom<T>,
pub fn round_into(self) -> U
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impl<T> ToOwned for T where
T: Clone,
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T: Clone,
type Owned = T
The resulting type after obtaining ownership.
pub fn to_owned(&self) -> T
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pub fn clone_into(&self, target: &mut T)
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impl<T, U> TryFrom<U> for T where
U: Into<T>,
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U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
pub fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
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U: TryFrom<T>,