Struct webrender::ellipse::Ellipse

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pub struct Ellipse<U> {
    pub radius: Size2D<f32, U>,
    pub total_arc_length: f32,
}

Expand description

Represents an ellipse centred at a local space origin.

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§radius: Size2D<f32, U>§total_arc_length: f32

Implementations§

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impl Ellipse

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pub fn new(radius: Size2D<f32, U>) -> Ellipse

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pub fn find_angle_for_arc_length(&self, arc_length: f32) -> f32

Binary search to estimate the angle of an ellipse for a given arc length. This only searches over the first quadrant of an ellipse.

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pub fn get_point_and_tangent(&self, theta: f32) -> (LayoutPoint, LayoutPoint)

Get a point and tangent on this ellipse from a given angle. This only works for the first quadrant of the ellipse.

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

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fn signed_distance(&self, point: LayoutVector2D) -> f32

Find the signed distance from this ellipse given a point. Taken from http://www.iquilezles.org/www/articles/ellipsedist/ellipsedist.htm

Trait Implementations§

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impl<U: Clone> Clone for Ellipse

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fn clone(&self) -> Ellipse

Returns a copy 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<U: Debug> Debug for Ellipse

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

Formats the value using the given formatter. Read more

Auto Trait Implementations§

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impl UnwindSafe for Ellipse
where U: UnwindSafe,

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> 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 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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