Struct Function 

pub struct Function<T, F>
where
    F: Fn(usize, usize) -> T,
{ /* private fields */ }

A frame backed by a function.

This might be useful if you just wanted to hack together a fractal renderer, or wanted to wrap an image coming from a C library. Using move closures with this struct essentially lets you build anonymous frames.

Implementations

impl<T, F> Function<T, F>

where F: Fn(usize, usize) -> T,

pub fn new(width: usize, height: usize, func: F) -> Self

Creates a new frame.

Trait Implementations

impl<T: Clone, F> Clone for Function<T, F>

where F: Fn(usize, usize) -> T + Clone,

fn clone(&self) -> Function<T, F>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<T: Debug, F> Debug for Function<T, F>

where F: Fn(usize, usize) -> T + Debug,

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

Formats the value using the given formatter.

impl<T, F> Image for Function<T, F>

where F: Fn(usize, usize) -> T,

type Pixel = T

The kind of pixel that the frame is made of.

fn width(&self) -> usize

The width of the frame in pixels.

fn height(&self) -> usize

The height of the frame in pixels.

unsafe fn pixel(&self, x: usize, y: usize) -> Self::Pixel

Gets the pixel at the specified zero-indexed coordinates.