Struct LetterboxTransform

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pub struct LetterboxTransform {
    pub scale: f64,
    pub pad_left: usize,
    pub pad_top: usize,
    pub content_width: usize,
    pub content_height: usize,
    pub output_width: usize,
    pub output_height: usize,
}

Expand description

Mapping between a source image and its letterboxed output.

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§scale: f64

Uniform source-to-output scale.

§pad_left: usize

Left padding in output pixels.

§pad_top: usize

Top padding in output pixels.

§content_width: usize

Resized content width.

§content_height: usize

Resized content height.

§output_width: usize

Final output width.

§output_height: usize

Final output height.

Implementations§

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impl LetterboxTransform

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pub fn map_point(self, x: f64, y: f64) -> (f64, f64)

Maps a source pixel coordinate into letterboxed output coordinates.

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pub fn unmap_point(self, x: f64, y: f64) -> (f64, f64)

Maps an output coordinate back into the source image.

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impl Clone for LetterboxTransform

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fn clone(&self) -> LetterboxTransform

Returns a duplicate of the value. Read more

1.0.0 (const: unstable) · Source§

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

Performs copy-assignment from source. Read more

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impl Debug for LetterboxTransform

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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 PartialEq for LetterboxTransform

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

Tests for self and other values to be equal, and is used by ==.

1.0.0 (const: unstable) · Source§

fn ne(&self, other: &Rhs) -> bool

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

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impl Copy for LetterboxTransform

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impl StructuralPartialEq for LetterboxTransform

Auto Trait Implementations§

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impl UnwindSafe for LetterboxTransform

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 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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