Struct Grid2D 

pub struct Grid2D<T: Copy + Default> { /* private fields */ }

A double-buffered 2D grid of cells, stored row-major.

A step reads Self::current and writes Self::next_mut, then Self::swap makes the next side current.

Implementations

impl<T: Copy + Default> Grid2D<T>

pub fn new(width: u32, height: u32) -> Self

Creates a width by height grid with every cell at T::default() on both sides.

pub fn width(&self) -> u32

Width in cells.

pub fn height(&self) -> u32

Height in cells.

pub fn heap_bytes(&self) -> usize

Heap memory held by both sides, in bytes.

pub fn len(&self) -> usize

Number of cells.

pub fn is_empty(&self) -> bool

Returns whether the grid has no cells.

pub fn current(&self) -> &[T]

Cells of the current side.

pub fn current_mut(&mut self) -> &mut [T]

Returns the current side mutably, for initialisation.

A step writes through Self::next_mut.

pub fn next_mut(&mut self) -> &mut [T]

Returns the next side for a step to write.

pub fn current_and_next_mut(&mut self) -> (&[T], &mut [T])

Returns the current side to read and the next side to write, as one split borrow.

pub fn swap(&mut self)

Makes the next side current by swapping the two buffers, copying no cells.

Trait Implementations

impl<T: Copy + Default> Debug for Grid2D<T>

Prints the grid’s size, not its cells.

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

Formats the value using the given formatter.