aj/OpenNest
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

perf(engine): add target count to ShrinkFiller with FillBestFit estimate

Browse Source 
When a target count is known, ShrinkFiller now uses FillBestFit (fast
rectangle packing) to estimate how many parts fit on the full area,
then scales the shrink axis proportionally to avoid an expensive
full-area fill. Falls back to full box if estimate is too aggressive.

Also shrinks to targetCount (not full count) to produce tighter boxes
when fewer parts are needed than the area can hold.

IterativeShrinkFiller passes NestItem.Quantity as the target count.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
This commit is contained in:
AJ Isaacs
2026-03-19 10:55:01 -04:00
parent 1e9640d4fc
commit e3b89f2660
2 changed files with 67 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files
OpenNest.Engine/Fill/IterativeShrinkFiller.cs
+3 -2
View File
@@ -67,8 +67,9 @@ namespace OpenNest.Engine.Fill
Func<NestItem, Box, List<Part>> shrinkWrapper = (ni, box) =>
{
var heightResult = ShrinkFiller.Shrink(fillFunc, ni, box, spacing, ShrinkAxis.Height, token);
var widthResult = ShrinkFiller.Shrink(fillFunc, ni, box, spacing, ShrinkAxis.Width, token);
var target = ni.Quantity > 0 ? ni.Quantity : 0;
var heightResult = ShrinkFiller.Shrink(fillFunc, ni, box, spacing, ShrinkAxis.Height, token, targetCount: target);
var widthResult = ShrinkFiller.Shrink(fillFunc, ni, box, spacing, ShrinkAxis.Width, token, targetCount: target);
var heightScore = FillScore.Compute(heightResult.Parts, box);
var widthScore = FillScore.Compute(widthResult.Parts, box);