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Path

Struct Path 

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pub struct Path { /* private fields */ }
Expand description

A 2D geometric path.

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impl Path

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pub fn new() -> Self

Create a new empty path.

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pub fn fill_type(&self) -> FillType

Get the fill type.

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pub fn set_fill_type(&mut self, fill_type: FillType)

Set the fill type.

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pub fn is_empty(&self) -> bool

Check if the path is empty.

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pub fn verb_count(&self) -> usize

Get the number of verbs.

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pub fn point_count(&self) -> usize

Get the number of points.

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pub fn bounds(&self) -> Rect

Get the bounds of the path.

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pub fn reset(&mut self)

Clear the path.

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pub fn iter(&self) -> PathIter<'_>

Iterate over the path elements.

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pub fn verbs(&self) -> &[Verb]

Get the verbs slice.

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pub fn points(&self) -> &[Point]

Get the points slice.

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pub fn last_point(&self) -> Option<Point>

Get the last point in the path.

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pub fn contour_count(&self) -> usize

Get the number of contours in the path.

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pub fn is_closed(&self) -> bool

Check if the path is closed.

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pub fn is_line(&self) -> bool

Check if the path represents a line.

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pub fn is_rect(&self) -> Option<Rect>

Check if the path represents a rectangle.

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pub fn is_oval(&self) -> bool

Returns true if this path is a simple oval (ellipse).

Verifies both verb structure (Move, 4 curves, Close) AND that the curve endpoints lie on the cardinal points of the bounding ellipse (left, right, top, bottom). This rejects 4-cubic paths that share the verb pattern but have arbitrary geometry.

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pub fn convexity(&self) -> PathConvexity

Get the convexity of the path.

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pub fn is_convex(&self) -> bool

Check if the path is convex.

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pub fn direction(&self) -> Option<PathDirection>

Get the direction of the first contour.

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pub fn reverse(&mut self)

Reverse the path direction.

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pub fn transform(&mut self, matrix: &Matrix)

Transform the path by a matrix.

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pub fn transformed(&self, matrix: &Matrix) -> Self

Create a transformed copy of the path.

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pub fn offset(&mut self, dx: Scalar, dy: Scalar)

Offset the path by (dx, dy).

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pub fn contains(&self, point: Point) -> bool

Check if a point is inside the path (using fill rule).

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pub fn tight_bounds(&self) -> Rect

Returns the tight bounding rectangle of this path.

Unlike bounds(), this computes the bounds from the actual curve extents, not the control-point bounding box. For cubic and quadratic Bezier curves with control points outside the actual curve range, tight_bounds() may be significantly smaller than bounds().

Conics fall back to control-polygon bounds (exact extrema for rational curves would require solving a quartic).

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pub fn length(&self) -> Scalar

Get the total length of the path.

Trait Implementations§

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impl Clone for Path

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fn clone(&self) -> Self

Returns a duplicate of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for Path

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

Formats the value using the given formatter. Read more
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impl Default for Path

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fn default() -> Self

Returns the “default value” for a type. Read more
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impl PartialEq for Path

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

Tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

Auto Trait Implementations§

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impl !Freeze for Path

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impl RefUnwindSafe for Path

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impl Send for Path

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impl Sync for Path

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impl Unpin for Path

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impl UnsafeUnpin for Path

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impl UnwindSafe for Path

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> IntoEither for T

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fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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impl<T> Pointable for T

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const ALIGN: usize

The alignment of pointer.
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type Init = T

The type for initializers.
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unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more
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unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more
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unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more
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unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more
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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<G1, G2> Within<G2> for G1
where G2: Contains<G1>,

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fn is_within(&self, b: &G2) -> bool