Struct GridPos 

pub struct GridPos {
    pub x: i32,
    pub y: i32,
    pub idx: usize,
    pub stride: usize,
}

Grid position context passed to stencil kernels.

This is a compile-time marker type. The transpiler recognizes method calls on GridPos and converts them to WGSL index calculations.

Fields

x: i32

X coordinate in the grid.

y: i32

Y coordinate in the grid.

idx: usize

Linear index in the buffer.

stride: usize

Buffer stride (width).

Implementations

impl GridPos

pub fn idx(&self) -> usize

Get the linear index for the current position.

Maps to: idx (local variable in generated WGSL)

pub fn x(&self) -> i32

Get the x coordinate.

pub fn y(&self) -> i32

Get the y coordinate.

pub fn north<T: Copy>(&self, buffer: &[T]) -> T

Access the north neighbor (y - 1).

Maps to: buffer[idx - buffer_width]

pub fn south<T: Copy>(&self, buffer: &[T]) -> T

Access the south neighbor (y + 1).

Maps to: buffer[idx + buffer_width]

pub fn east<T: Copy>(&self, buffer: &[T]) -> T

Access the east neighbor (x + 1).

Maps to: buffer[idx + 1]

pub fn west<T: Copy>(&self, buffer: &[T]) -> T

Access the west neighbor (x - 1).

Maps to: buffer[idx - 1]

pub fn at<T: Copy>(&self, buffer: &[T], dx: i32, dy: i32) -> T

Access a neighbor at relative offset (dx, dy).

Maps to: buffer[idx + dy * buffer_width + dx]

Trait Implementations

impl Clone for GridPos

fn clone(&self) -> GridPos

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for GridPos

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

Formats the value using the given formatter.

impl Copy for GridPos