Struct CarvingMask 

pub struct CarvingMask {
    min_y: i32,
    height: i32,
    bits: Vec<u64>,
}

A 16 × height × 16 bitset of local block positions in a chunk.

Fields

min_y: i32

height: i32

bits: Vec<u64>

256 bits per Y layer (x in low 4 bits, z in next 4 bits).

Implementations

impl CarvingMask

pub fn new(height: i32, min_y: i32) -> Self

Creates an empty mask covering [min_y, min_y + height).

pub fn from_packed_u64s(height: i32, min_y: i32, packed: &[u64]) -> Self

Rebuilds a mask from Steel’s packed u64 bitset representation.

pub fn to_packed_u64s(&self) -> Vec<u64>

Returns Steel’s packed u64 bitset representation, trimming trailing zeroes.

const fn index(&self, x: i32, y: i32, z: i32) -> usize

Vanilla’s getIndex: x & 15 | (z & 15) << 4 | (y - min_y) << 8.

pub fn set(&mut self, x: i32, y: i32, z: i32)

Marks (x, y, z) as carved.

pub fn set_if_unset(&mut self, x: i32, y: i32, z: i32) -> bool

Marks (x, y, z) as carved if it was not already marked.

Returns true when this call set the bit, or false when a previous carver step had already visited the position.

pub fn get(&self, x: i32, y: i32, z: i32) -> bool

Returns whether (x, y, z) has been carved.

pub const fn min_y(&self) -> i32

Y range bound at construction.

pub const fn height(&self) -> i32

Height in blocks.

Trait Implementations

impl Clone for CarvingMask

fn clone(&self) -> CarvingMask

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for CarvingMask

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

Formats the value using the given formatter.