Struct SPProblem

pub struct SPProblem {
    pub instance: SPInstance,
    pub strip: Strip,
    pub layout: Layout,
    pub item_demand_qtys: Vec<usize>,
}

Modifiable counterpart of SPInstance: items can be placed and removed, strip can be extended or fitted.

Fields

instance: SPInstance

strip: Strip

layout: Layout

item_demand_qtys: Vec<usize>

Implementations

impl SPProblem

pub fn new(instance: SPInstance) -> Self

pub fn change_strip_width(&mut self, new_width: f32)

Modifies the width of the strip in the back, keeping the front fixed.

pub fn fit_strip(&mut self)

Shrinks the strip to the minimum width that fits all items.

pub fn place_item(&mut self, placement: SPPlacement) -> PItemKey

Places an item according to the given SPPlacement in the problem.

pub fn remove_item( &mut self, pkey: PItemKey, commit_instant: bool, ) -> SPPlacement

Removes a placed item from the strip. Returns the placement of the item. Set commit_instantly to false if there’s a high chance that this modification will be reverted.

pub fn save(&mut self) -> SPSolution

Creates a snapshot of the current state of the problem as a SPSolution.

pub fn restore(&mut self, solution: &SPSolution)

Restores the state of the problem to the given SPSolution.

pub fn density(&self) -> f32

pub fn strip_width(&self) -> f32

Trait Implementations

impl Clone for SPProblem

fn clone(&self) -> SPProblem

Returns a copy of the value.

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

Performs copy-assignment from source.