Enum FlowDirection 

pub enum FlowDirection {
    None,
    Left,
    Right,
    Up,
    Down,
}

Cardinal step stored in a prepared flow field cell.

Self::None marks the goal, blocked/out-of-bounds probes, or unreachable cells.

Variants

None

Unreachable or goal cell (no step).

Left

Step toward decreasing x.

Right

Step toward increasing x.

Up

Step toward decreasing y.

Down

Step toward increasing y.

Implementations

impl FlowDirection

pub const fn delta(self) -> Option<(isize, isize)>

Returns the (dx, dy) step for this direction, or None for Self::None.

Trait Implementations

impl Clone for FlowDirection

fn clone(&self) -> FlowDirection

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for FlowDirection

impl Debug for FlowDirection

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

Formats the value using the given formatter.

impl Eq for FlowDirection

impl PartialEq for FlowDirection

fn eq(&self, other: &FlowDirection) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for FlowDirection