Struct LevelSetReinit 

pub struct LevelSetReinit {
    pub tol: f64,
    pub max_iter: usize,
}

Level-set reinitialization via fast marching method (redistancing).

Converts an arbitrary level-set function into a proper signed distance function while preserving the zero-level-set location.

Fields

tol: f64

Convergence tolerance for iterative reinitialization.

max_iter: usize

Maximum number of pseudo-time iterations.

Implementations

impl LevelSetReinit

pub fn new(tol: f64, max_iter: usize) -> Self

Create a new reinitialization solver with given tolerance and iteration limit.

Arguments

• tol – convergence tolerance (∞-norm of update)
• max_iter – maximum pseudo-time steps

pub fn reinitialize(&self, field: &mut LevelSetField)

Reinitialize a level-set field using the PDE-based Sussman scheme.

Integrates ∂φ/∂τ = sign(φ₀)(1 − |∇φ|) until steady state. Modifies field.data in place.

Arguments

• field – the level-set field to reinitialize

pub fn fast_sweep(&self, field: &mut LevelSetField, n_sweeps: usize)

Simple iterative fast marching sweep reinitialization (alternating directions).

Faster than the PDE approach for well-behaved fields; performs n_sweeps alternating-direction passes of the first-order update.

Arguments

• field – the level-set field to reinitialize
• n_sweeps– number of alternating-direction sweep passes