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fix(engine): isolate job identity and engine selection

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Replace name-based quantity deduction with reference-based drawing
identity in the engine paths the whole-job runner reaches
(NestEngineBase fill/pack, StripNestEngine deduction, RemnantFiller
ledger, IterativeShrinkFiller leftovers). Add instance-scoped
PlateNesterFactory that resolves built-in strategies without touching
the global NestEngineRegistry. Add identity and engine-selection tests.

44 net8.0 tests pass in Debug and Release; no new warnings.
This commit is contained in:
aj
2026-09-17 15:35:59 -04:00
parent 0963b051be
commit 5b88d85937
8 changed files with 279 additions and 22 deletions
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OpenNest.Engine/Fill/RemnantFiller.cs
+8 -8
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@@ -58,20 +58,20 @@ namespace OpenNest.Engine.Fill
return allParts;
}
private static Dictionary<string, int> BuildLocalQuantities(List<NestItem> items)
private static Dictionary<Drawing, int> BuildLocalQuantities(List<NestItem> items)
{
var localQty = new Dictionary<string, int>(items.Count);
var localQty = new Dictionary<Drawing, int>(items.Count, ReferenceEqualityComparer.Instance);
foreach (var item in items)
localQty[item.Drawing.Name] = item.Quantity;
localQty[item.Drawing] = item.Quantity;
return localQty;
}
private static double FindMinItemDimension(List<NestItem> items, Dictionary<string, int> localQty)
private static double FindMinItemDimension(List<NestItem> items, Dictionary<Drawing, int> localQty)
{
var minDim = double.MaxValue;
foreach (var item in items)
{
if (localQty[item.Drawing.Name] <= 0)
if (localQty[item.Drawing] <= 0)
continue;
var bb = item.Drawing.Program.BoundingBox();
var dim = System.Math.Min(bb.Width, bb.Length);
@@ -84,7 +84,7 @@ namespace OpenNest.Engine.Fill
private bool TryFillOneItem(
List<NestItem> items,
List<Box> freeBoxes,
Dictionary<string, int> localQty,
Dictionary<Drawing, int> localQty,
Func<NestItem, Box, List<Part>> fillFunc,
List<Part> allParts,
CancellationToken token)
@@ -94,7 +94,7 @@ namespace OpenNest.Engine.Fill
if (token.IsCancellationRequested)
return false;
var qty = localQty[item.Drawing.Name];
var qty = localQty[item.Drawing];
if (qty <= 0)
continue;
@@ -110,7 +110,7 @@ namespace OpenNest.Engine.Fill
RemoveTopmostPart(placed);
allParts.AddRange(placed);
localQty[item.Drawing.Name] = System.Math.Max(0, qty - placed.Count);
localQty[item.Drawing] = System.Math.Max(0, qty - placed.Count);
// Add the envelope of all placed parts as a single obstacle
// rather than individual bounding boxes, preventing the