Struct LayoutEngine 

pub struct LayoutEngine {
    pub positions: HashMap<String, (f64, f64)>,
    pub running: bool,
    /* private fields */
}

The layout state: node positions keyed by stable node key, plus the simulated-annealing temperature.

Fields

positions: HashMap<String, (f64, f64)>

Positions in abstract layout space, keyed by node key.

running: bool

true while the simulation still runs on ticks.

Implementations

impl LayoutEngine

pub fn seed(&mut self, model: &GraphModel)

Ensures every node in the model has a position, seeding new nodes deterministically near their neighbors’ centroid (or on a hash-derived ring when they have none), and re-heats the simulation.

pub fn step( &mut self, model: &GraphModel, included: &[bool], iterations: usize, ) -> bool

Runs iterations Fruchterman–Reingold steps over the nodes selected by included (pass all-true for the full graph). Returns false once the layout has cooled and no further stepping is useful.

pub fn radial(&mut self, model: &GraphModel)

Replaces positions with a radial layout: concepts ring by directory depth, spread deterministically by key hash within each ring.

pub const fn toggle_running(&mut self)

Pauses or resumes the simulation. Resuming re-heats it slightly.

Trait Implementations

impl Clone for LayoutEngine

fn clone(&self) -> LayoutEngine

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for LayoutEngine

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

Formats the value using the given formatter.

impl Default for LayoutEngine

fn default() -> Self

Returns the “default value” for a type.