Struct ffimage::packed::generic::SubImageView

pub struct SubImageView<'a, I: GenericImageView<'a>> { /* fields omitted */ }

Sub image view into another image

Implementations

impl<'a, I: GenericImageView<'a>> SubImageView<'a, I>

pub fn new(
    parent: &'a I,
    x: u32,
    y: u32,
    width: u32,
    height: u32
) -> Option<Self>

Returns a new read-only view into another image.

Arguments

• parent - Parent image backing the sub image
• x - X offset
• y - Y offset
• width - Width in pixels
• height - Height in pixels

Example

use ffimage::color::rgb::*;
use ffimage::core::GenericImageView;
use ffimage::packed::generic::ImageBuffer;

let mut buf = ImageBuffer::<Rgb<u8>>::new(3, 3);
let sub = buf.view(1, 1, 2, 2);

Trait Implementations

impl<'a, I: GenericImageView<'a>> GenericImageView<'a> for SubImageView<'a, I>

type T = I::T

Pixel type

type SubImage = Self

Type of sub images

fn width(&self) -> u32

Width in pixels

fn height(&self) -> u32

Height in pixels

fn pixel(&self, x: u32, y: u32) -> Option<Self::T>

Returns the pixel at the specified coordinates

fn view(
    &'a self,
    x: u32,
    y: u32,
    width: u32,
    height: u32
) -> Option<Self::SubImage>

Returns a sub image view backed by the same data

impl<'a, T: Pixel> Index<usize> for SubImageView<'a, ImageView<'a, T>>

type Output = [T]

The returned type after indexing.

fn index(&self, index: usize) -> &Self::Output

Performs the indexing (container[index]) operation.

impl<'a, T: Pixel> Index<usize> for SubImageView<'a, ImageViewMut<'a, T>>

type Output = [T]

The returned type after indexing.

fn index(&self, index: usize) -> &Self::Output

Performs the indexing (container[index]) operation.

impl<'a, T: Pixel> Index<usize> for SubImageView<'a, ImageBuffer<T>>

type Output = [T]

The returned type after indexing.

fn index(&self, index: usize) -> &Self::Output

Performs the indexing (container[index]) operation.