feat: add AutoSplitCalculator for fit-to-plate and split-by-count

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
2026-03-24 12:03:18 -04:00
parent 499e0425b5
commit d7b095cf2d
2 changed files with 115 additions and 0 deletions
--- a/OpenNest.Core/Splitting/AutoSplitCalculator.cs
+++ b/OpenNest.Core/Splitting/AutoSplitCalculator.cs
@@ -0,0 +1,59 @@
+using System.Collections.Generic;
+using OpenNest.Geometry;
+
+namespace OpenNest;
+
+public static class AutoSplitCalculator
+{
+    public static List<SplitLine> FitToPlate(Box partBounds, double plateWidth, double plateHeight,
+        double edgeSpacing, double featureOverhang)
+    {
+        var usableWidth = plateWidth - 2 * edgeSpacing - featureOverhang;
+        var usableHeight = plateHeight - 2 * edgeSpacing - featureOverhang;
+
+        var lines = new List<SplitLine>();
+
+        var verticalSplits = usableWidth > 0 ? (int)System.Math.Ceiling(partBounds.Width / usableWidth) - 1 : 0;
+        var horizontalSplits = usableHeight > 0 ? (int)System.Math.Ceiling(partBounds.Length / usableHeight) - 1 : 0;
+
+        if (verticalSplits < 0) verticalSplits = 0;
+        if (horizontalSplits < 0) horizontalSplits = 0;
+
+        if (verticalSplits > 0)
+        {
+            var spacing = partBounds.Width / (verticalSplits + 1);
+            for (var i = 1; i <= verticalSplits; i++)
+                lines.Add(new SplitLine(partBounds.X + spacing * i, CutOffAxis.Vertical));
+        }
+
+        if (horizontalSplits > 0)
+        {
+            var spacing = partBounds.Length / (horizontalSplits + 1);
+            for (var i = 1; i <= horizontalSplits; i++)
+                lines.Add(new SplitLine(partBounds.Y + spacing * i, CutOffAxis.Horizontal));
+        }
+
+        return lines;
+    }
+
+    public static List<SplitLine> SplitByCount(Box partBounds, int horizontalPieces, int verticalPieces)
+    {
+        var lines = new List<SplitLine>();
+
+        if (verticalPieces > 1)
+        {
+            var spacing = partBounds.Width / verticalPieces;
+            for (var i = 1; i < verticalPieces; i++)
+                lines.Add(new SplitLine(partBounds.X + spacing * i, CutOffAxis.Vertical));
+        }
+
+        if (horizontalPieces > 1)
+        {
+            var spacing = partBounds.Length / horizontalPieces;
+            for (var i = 1; i < horizontalPieces; i++)
+                lines.Add(new SplitLine(partBounds.Y + spacing * i, CutOffAxis.Horizontal));
+        }
+
+        return lines;
+    }
+}