71 lines
3.4 KiB
C#
71 lines
3.4 KiB
C#
using System;
|
|
using System.Linq;
|
|
using System.Threading;
|
|
|
|
using OpenNest.Engine.Jobs.Adapters;
|
|
namespace OpenNest.Engine.Jobs.Placement;
|
|
|
|
/// <summary>
|
|
/// Migrated built-in placement strategy for the whole-job runner. Reuses <see cref="DefaultNestEngine"/>
|
|
/// fill/pack geometry but owns its own run-scoped bookkeeping: remaining demand is read from the
|
|
/// request and placement counts are derived from returned placements, so the engine's private
|
|
/// <see cref="NestItem.Quantity"/> mutations never feed back into job accounting.
|
|
/// </summary>
|
|
/// <remarks>
|
|
/// The identity/progress boundary mechanics live in <see cref="CandidatePlacementContext"/>: one
|
|
/// private <see cref="Drawing"/> per requirement is created once per solve and reused across every
|
|
/// candidate trial (the runner reuses one <see cref="IPlateNester"/> instance per job). This is safe
|
|
/// because the engines mutate <see cref="NestItem.Quantity"/> (per-trial) and canonical-frame copies,
|
|
/// never the shared <see cref="Drawing"/> or its <c>Quantity</c>. Identity is by Drawing reference,
|
|
/// never by name. Each trial still gets a fresh private <see cref="Plate"/>.
|
|
/// </remarks>
|
|
public sealed class DefaultPlateNester : IPlateNester
|
|
{
|
|
private readonly Func<Plate, DefaultNestEngine> engineFactory;
|
|
private readonly OrderedPlateNester restrictedRotationNester = new();
|
|
private readonly CandidatePlacementContext context = new();
|
|
|
|
public DefaultPlateNester()
|
|
: this(static plate => new DefaultNestEngine(plate)) { }
|
|
|
|
/// <param name="engineFactory">Injectable for tests; defaults to <see cref="DefaultNestEngine"/>.</param>
|
|
public DefaultPlateNester(Func<Plate, DefaultNestEngine> engineFactory)
|
|
{
|
|
this.engineFactory =
|
|
engineFactory ?? throw new ArgumentNullException(nameof(engineFactory));
|
|
}
|
|
|
|
public PlateCandidate Place(
|
|
PlatePlacementRequest request,
|
|
IProgress<NestJobProgress> progress = null,
|
|
CancellationToken token = default
|
|
)
|
|
{
|
|
ArgumentNullException.ThrowIfNull(request);
|
|
token.ThrowIfCancellationRequested();
|
|
|
|
// The legacy engine cannot express a locked or bounded rotation (start == end == 0 reads
|
|
// as "unconstrained") and its Pairs/RectBestFit strategies rotate freely, so it can return
|
|
// poses the requirement's RotationPolicy forbids. Restricted requirements go to the
|
|
// policy-aware ordered nester, which only proposes allowed angles and validates each pose.
|
|
if (request.Parts.Any(part => part.Rotation.Kind != RotationPolicyKind.Automatic))
|
|
return restrictedRotationNester.Place(request, progress, token);
|
|
|
|
var plate = DrawingJobMapper.CreatePlate(request.Stock);
|
|
// Quantity is the request's remaining demand; the engine may mutate these per-trial items,
|
|
// and that mutation is deliberately discarded — placement counts come from the result.
|
|
var items = context.CreateItems(request.Parts);
|
|
|
|
var engine =
|
|
engineFactory(plate)
|
|
?? throw new InvalidOperationException("Engine factory returned null.");
|
|
var legacyProgress = CandidateProgressBridge.Create(progress, request.Stock.Id);
|
|
var parts = engine.Nest(items, legacyProgress, token);
|
|
token.ThrowIfCancellationRequested();
|
|
if (parts == null)
|
|
throw new InvalidOperationException("Engine returned null placements.");
|
|
|
|
return new PlateCandidate(context.MapPlacements(parts));
|
|
}
|
|
}
|