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feat: use direction-specific engines in StripNestEngine

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Height shrink now uses HorizontalRemnantEngine (minimizes Y-extent)
and width shrink uses VerticalRemnantEngine (minimizes X-extent).
IterativeShrinkFiller accepts an optional widthFillFunc so each
shrink axis can use a different fill engine.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
This commit is contained in:
AJ Isaacs
2026-03-21 23:09:02 -04:00
parent 92b17b2963
commit 07012033c7
2 changed files with 17 additions and 8 deletions
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7
OpenNest.Engine/Fill/IterativeShrinkFiller.cs
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@@ -31,7 +31,8 @@ namespace OpenNest.Engine.Fill
double spacing,
CancellationToken token = default,
IProgress<NestProgress> progress = null,
int plateNumber = 0)
int plateNumber = 0,
Func<NestItem, Box, List<Part>> widthFillFunc = null)
{
if (items == null || items.Count == 0)
return new IterativeShrinkResult();
@@ -72,6 +73,8 @@ namespace OpenNest.Engine.Fill
// include them in progress reports.
var placedSoFar = new List<Part>();
var wFillFunc = widthFillFunc ?? fillFunc;
Func<NestItem, Box, List<Part>> shrinkWrapper = (ni, box) =>
{
var target = ni.Quantity > 0 ? ni.Quantity : 0;
@@ -84,7 +87,7 @@ namespace OpenNest.Engine.Fill
Parallel.Invoke(
() => heightResult = ShrinkFiller.Shrink(fillFunc, ni, box, spacing, ShrinkAxis.Height, token,
targetCount: target, progress: progress, plateNumber: plateNumber, placedParts: placedSoFar),
() => widthResult = ShrinkFiller.Shrink(fillFunc, ni, box, spacing, ShrinkAxis.Width, token,
() => widthResult = ShrinkFiller.Shrink(wFillFunc, ni, box, spacing, ShrinkAxis.Width, token,
targetCount: target, progress: progress, plateNumber: plateNumber, placedParts: placedSoFar)
);