Struct BackfillState 

pub struct BackfillState {
    pub filled: [bool; 8],
}

Per-tile record of which neighbour borders have been backfilled.

Each flag corresponds to one of the eight NEIGHBOR_OFFSETS. When a flag is true, the border strip for that direction contains real neighbour data rather than clamped self-data.

Fields

filled: [bool; 8]

Indexed by the same order as NEIGHBOR_OFFSETS: [N, S, W, E, NW, NE, SW, SE].

Implementations

impl BackfillState

pub fn reset(&mut self)

Reset all flags to false (all borders need re-patching).

pub fn mark(&mut self, offset_index: usize)

Mark the direction at offset_index as backfilled.

pub fn is_filled(&self, offset_index: usize) -> bool

Check whether the direction at offset_index has been filled.

Trait Implementations

impl Clone for BackfillState

fn clone(&self) -> BackfillState

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for BackfillState

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

Formats the value using the given formatter.

impl Default for BackfillState

fn default() -> BackfillState

Returns the “default value” for a type.