Struct image::color::Luma

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#[repr(C)]
pub struct Luma<T>(pub [T; 1]);
Expand description

Grayscale colors.

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§0: [T; 1]

Trait Implementations§

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impl<T: Primitive> Blend for Luma<T>

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fn blend(&mut self, other: &Luma<T>)

Blends a color in-place.
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impl<T: Clone> Clone for Luma<T>

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fn clone(&self) -> Luma<T>

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<T: Debug> Debug for Luma<T>

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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<T> From<[T; 1]> for Luma<T>

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fn from(c: [T; 1]) -> Self

Converts to this type from the input type.
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impl<S: Primitive, T> FromColor<Luma<S>> for Luma<T>
where T: FromPrimitive<S> + Primitive,

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fn from_color(&mut self, other: &Luma<S>)

Changes self to represent Other in the color space of Self
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impl<S: Primitive, T> FromColor<Luma<S>> for LumaA<T>
where T: FromPrimitive<S> + Primitive,

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fn from_color(&mut self, other: &Luma<S>)

Changes self to represent Other in the color space of Self
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impl<S: Primitive, T> FromColor<Luma<S>> for Rgb<T>
where T: FromPrimitive<S> + Primitive,

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fn from_color(&mut self, other: &Luma<S>)

Changes self to represent Other in the color space of Self
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impl<S: Primitive, T> FromColor<Luma<S>> for Rgba<T>
where T: FromPrimitive<S> + Primitive,

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fn from_color(&mut self, gray: &Luma<S>)

Changes self to represent Other in the color space of Self
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impl<S: Primitive, T> FromColor<LumaA<S>> for Luma<T>
where T: FromPrimitive<S> + Primitive,

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fn from_color(&mut self, other: &LumaA<S>)

Changes self to represent Other in the color space of Self
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impl<S: Primitive + Enlargeable, T> FromColor<Rgb<S>> for Luma<T>
where T: FromPrimitive<S> + Primitive,

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fn from_color(&mut self, other: &Rgb<S>)

Changes self to represent Other in the color space of Self
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impl<S: Primitive + Enlargeable, T> FromColor<Rgba<S>> for Luma<T>
where T: FromPrimitive<S> + Primitive,

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fn from_color(&mut self, other: &Rgba<S>)

Changes self to represent Other in the color space of Self
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impl<T: Hash> Hash for Luma<T>

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fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher. Read more
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fn hash_slice<H>(data: &[Self], state: &mut H)
where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher. Read more
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impl<T> Index<usize> for Luma<T>

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type Output = T

The returned type after indexing.
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fn index(&self, _index: usize) -> &T

Performs the indexing (container[index]) operation. Read more
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impl<T> IndexMut<usize> for Luma<T>

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fn index_mut(&mut self, _index: usize) -> &mut T

Performs the mutable indexing (container[index]) operation. Read more
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impl<T: Primitive> Invert for Luma<T>

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fn invert(&mut self)

Inverts a color in-place.
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impl<T: PartialEq> PartialEq for Luma<T>

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fn eq(&self, other: &Luma<T>) -> 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.
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impl<T: Primitive> Pixel for Luma<T>

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type Subpixel = T

The scalar type that is used to store each channel in this pixel.
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const CHANNEL_COUNT: u8 = 1u8

The number of channels of this pixel type.
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fn channels(&self) -> &[T]

Returns the components as a slice.
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fn channels_mut(&mut self) -> &mut [T]

Returns the components as a mutable slice
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const COLOR_MODEL: &'static str = "Y"

A string that can help to interpret the meaning each channel See gimp babl.
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fn channels4(&self) -> (T, T, T, T)

👎Deprecated since 0.24.0: Use channels() or channels_mut()
Returns the channels of this pixel as a 4 tuple. If the pixel has less than 4 channels the remainder is filled with the maximum value
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fn from_channels(a: T, b: T, c: T, d: T) -> Luma<T>

👎Deprecated since 0.24.0: Use the constructor of the pixel, for example Rgba([r,g,b,a]) or Pixel::from_slice
Construct a pixel from the 4 channels a, b, c and d. If the pixel does not contain 4 channels the extra are ignored.
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fn from_slice(slice: &[T]) -> &Luma<T>

Returns a view into a slice. Read more
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fn from_slice_mut(slice: &mut [T]) -> &mut Luma<T>

Returns mutable view into a mutable slice. Read more
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fn to_rgb(&self) -> Rgb<T>

Convert this pixel to RGB
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fn to_rgba(&self) -> Rgba<T>

Convert this pixel to RGB with an alpha channel
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fn to_luma(&self) -> Luma<T>

Convert this pixel to luma
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fn to_luma_alpha(&self) -> LumaA<T>

Convert this pixel to luma with an alpha channel
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fn map<F>(&self, f: F) -> Luma<T>
where F: FnMut(T) -> T,

Apply the function f to each channel of this pixel.
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fn apply<F>(&mut self, f: F)
where F: FnMut(T) -> T,

Apply the function f to each channel of this pixel.
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fn map_with_alpha<F, G>(&self, f: F, g: G) -> Luma<T>
where F: FnMut(T) -> T, G: FnMut(T) -> T,

Apply the function f to each channel except the alpha channel. Apply the function g to the alpha channel.
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fn apply_with_alpha<F, G>(&mut self, f: F, g: G)
where F: FnMut(T) -> T, G: FnMut(T) -> T,

Apply the function f to each channel except the alpha channel. Apply the function g to the alpha channel. Works in-place.
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fn map2<F>(&self, other: &Self, f: F) -> Luma<T>
where F: FnMut(T, T) -> T,

Apply the function f to each channel of this pixel and other pairwise.
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fn apply2<F>(&mut self, other: &Luma<T>, f: F)
where F: FnMut(T, T) -> T,

Apply the function f to each channel of this pixel and other pairwise. Works in-place.
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fn invert(&mut self)

Invert this pixel
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fn blend(&mut self, other: &Luma<T>)

Blend the color of a given pixel into ourself, taking into account alpha channels
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fn map_without_alpha<F>(&self, f: F) -> Self
where F: FnMut(Self::Subpixel) -> Self::Subpixel,

Apply the function f to each channel except the alpha channel.
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fn apply_without_alpha<F>(&mut self, f: F)
where F: FnMut(Self::Subpixel) -> Self::Subpixel,

Apply the function f to each channel except the alpha channel. Works in place.
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impl PixelWithColorType for Luma<u16>

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const COLOR_TYPE: ColorType = ColorType::L16

This pixel has the format of one of the predefined ColorTypes, such as Rgb8, La16 or Rgba32F. This is needed for automatically detecting a color format when saving an image as a file.
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impl PixelWithColorType for Luma<u8>

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const COLOR_TYPE: ColorType = ColorType::L8

This pixel has the format of one of the predefined ColorTypes, such as Rgb8, La16 or Rgba32F. This is needed for automatically detecting a color format when saving an image as a file.
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impl<T: Copy> Copy for Luma<T>

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impl<T: Eq> Eq for Luma<T>

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impl SealedPixelWithColorType for Luma<u16>

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impl SealedPixelWithColorType for Luma<u8>

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impl<T> StructuralPartialEq for Luma<T>

Auto Trait Implementations§

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impl<T> Freeze for Luma<T>
where T: Freeze,

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impl<T> RefUnwindSafe for Luma<T>
where T: RefUnwindSafe,

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impl<T> Send for Luma<T>
where T: Send,

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impl<T> Sync for Luma<T>
where T: Sync,

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impl<T> Unpin for Luma<T>
where T: Unpin,

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impl<T> UnwindSafe for Luma<T>
where T: 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> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dst: *mut T)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dst. 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.