Struct NestingProblem 

pub struct NestingProblem { /* private fields */ }

Problem definition for GA-based 2D nesting.

Implementations

impl NestingProblem

pub fn new( geometries: Vec<Geometry2D>, boundary: Boundary2D, config: Config, cancelled: Arc<AtomicBool>, ) -> Self

Creates a new nesting problem.

pub fn num_instances(&self) -> usize

Returns the total number of instances.

pub fn rotation_options(&self) -> usize

Returns the number of rotation options.

pub fn decode( &self, chromosome: &NestingChromosome, ) -> (Vec<Placement<f64>>, f64, usize)

Decodes a chromosome into placements using NFP-guided placement.

Trait Implementations

impl GaProblem for NestingProblem

type Individual = NestingChromosome

The individual type for this problem.

fn evaluate(&self, individual: &mut Self::Individual)

Evaluates the fitness of an individual.

fn initialize_population<R: Rng>( &self, size: usize, rng: &mut R, ) -> Vec<Self::Individual>

Creates an initial population.

fn on_generation( &self, generation: u32, best: &Self::Individual, _population: &[Self::Individual], )

Called after each generation (for progress reporting).

fn evaluate_parallel(&self, individuals: &mut [Self::Individual])

Evaluates multiple individuals in parallel. Default implementation uses rayon for parallel evaluation.