Struct SimulationConfig 

pub struct SimulationConfig {
    pub repulsion_strength: f32,
    pub link_strength: f32,
    pub link_distance: f32,
    pub center_strength: f32,
    pub velocity_decay: f32,
    pub theta: f32,
    pub seed: u64,
    pub dimensions: u8,
}

Force simulation configuration. The defaults match d3-force’s defaults so graphs that used to render there look the same here.

Fields

repulsion_strength: f32

Negative values repel, positive values attract. d3 default -30.

link_strength: f32

Spring stiffness scaling on the link force (0..1 range is typical).

link_distance: f32

Natural length of each link edge in world units.

center_strength: f32

Center-of-mass gravity pulling nodes toward the origin.

velocity_decay: f32

Per-tick velocity damping. 0.4 matches d3’s default velocity decay.

theta: f32

Barnes-Hut approximation threshold. Larger = faster but less accurate. d3 uses 0.9 under the name theta.

seed: u64

RNG seed used to scatter initial positions deterministically.

dimensions: u8

Dimensionality of the simulation: 2 (default, quadtree) or 3 (octree). Phase 224 Wave 2 toggle — anything else is clamped to 2. Positions keep the 2D layout when dimensions == 2 and switch to 3-vector positions (accessible via positions_3d()) when dimensions == 3.

Trait Implementations

impl Clone for SimulationConfig

fn clone(&self) -> SimulationConfig

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for SimulationConfig

impl Debug for SimulationConfig

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

Formats the value using the given formatter.

impl Default for SimulationConfig

fn default() -> Self

Returns the “default value” for a type.