Struct Filter

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pub struct Filter { /* private fields */ }

Expand description

Resampling filter.

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impl Filter

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pub fn new(kernel: Box<dyn Fn(f32) -> f32>, support: f32) -> Self

Create a new filter.

§Examples

use resize::Filter;
fn kernel(x: f32) -> f32 { f32::max(1.0 - x.abs(), 0.0) }
let filter = Filter::new(Box::new(kernel), 1.0);

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pub fn hermite(radius: f32) -> Self

Hermite filter.

A cubic filter that produces results between Type::Triangle and [Type::Box].

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pub fn lagrange(radius: f32) -> Self

Lagrange resizing.

Similar to Type::Lanczos3, but with less ringing.

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pub fn box_filter(radius: f32) -> Self

Box filter.

This is a simple average operation. It’s the ideal filter when downscaling by an integer fraction (e.g. 1/2x, 1/3x, 1/4x). When used for upscaling, it will behave like Type::Point.

Auto Trait Implementations§

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impl !UnwindSafe for Filter

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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