Struct FftIsolated 

pub struct FftIsolated {
    pub shape: [usize; 3],
    pub dx: [f64; 3],
    /* private fields */
}

Isolated-BC Poisson solver (Hockney-Eastwood zero-padding). Correct vacuum BC. Pads density into (2N)³ box, convolves with precomputed Green’s function, extracts N³ solution.

Fields

shape: [usize; 3]

dx: [f64; 3]

Implementations

impl FftIsolated

pub fn new(domain: &Domain) -> Self

Trait Implementations

impl PoissonSolver for FftIsolated

fn solve(&self, density: &DensityField, g: f64) -> PotentialField

Solve ∇²Φ = 4πGρ and return the potential field.

fn compute_acceleration(&self, potential: &PotentialField) -> AccelerationField

Compute the gravitational acceleration g = −∇Φ via spectral differentiation or finite differences.