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

feat: add CutOff and CutOffSettings domain classes with segment generation

Browse Source 
CutOff computes cut segments along a vertical or horizontal axis,
excluding zones around existing parts with configurable clearance.
CutOffSettings controls part clearance, overtravel, minimum segment
length, and cut direction (toward/away from origin).

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
This commit is contained in:
AJ Isaacs
2026-03-22 19:32:33 -04:00
parent 3f6bc2b2a1
commit 5fc7d1989a
3 changed files with 338 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

154
OpenNest.Tests/CutOffTests.cs
View File

@@ -1,4 +1,6 @@
using System.Linq;
using OpenNest.CNC;
using OpenNest.Geometry;
namespace OpenNest.Tests;
@@ -61,4 +63,156 @@ public class CutOffTests
var hasOverlap = plate.HasOverlappingParts(out var pts);
Assert.False(hasOverlap);
}
[Fact]
public void CutOff_VerticalCut_GeneratesFullLineOnEmptyPlate()
{
var plate = new Plate(100, 50);
var settings = new CutOffSettings();
var cutoff = new CutOff(new Vector(25, 20), CutOffAxis.Vertical);
cutoff.Regenerate(plate, settings);
Assert.NotNull(cutoff.Drawing);
Assert.True(cutoff.Drawing.IsCutOff);
Assert.True(cutoff.Drawing.Program.Codes.Count > 0);
}
[Fact]
public void CutOff_HorizontalCut_GeneratesFullLineOnEmptyPlate()
{
var plate = new Plate(100, 50);
var settings = new CutOffSettings();
var cutoff = new CutOff(new Vector(25, 20), CutOffAxis.Horizontal);
cutoff.Regenerate(plate, settings);
var codes = cutoff.Drawing.Program.Codes;
Assert.Equal(2, codes.Count);
}
[Fact]
public void CutOff_VerticalCut_TrimsAroundPart()
{
// Create a 10x10 part at the origin, then move it to (20,20)
// so the bounding box is Box(20,20,10,10) and doesn't span the origin.
var pgm = new Program();
pgm.Codes.Add(new RapidMove(new Vector(0, 0)));
pgm.Codes.Add(new LinearMove(new Vector(10, 0)));
pgm.Codes.Add(new LinearMove(new Vector(10, 10)));
pgm.Codes.Add(new LinearMove(new Vector(0, 10)));
pgm.Codes.Add(new LinearMove(new Vector(0, 0)));
var drawing = new Drawing("sq", pgm);
var plate = new Plate(50, 50);
var part = Part.CreateAtOrigin(drawing);
part.Location = new Vector(20, 20);
plate.Parts.Add(part);
// Vertical cut at X=25 runs along Y from 0 to 50.
// Part BB at (20,20,10,10) with clearance 1 → exclusion X=[19,31], Y=[19,31].
// X=25 is within [19,31] so exclusion applies: skip Y=[19,31].
// Segments: (0, 19) and (31, 50) → 2 segments → 4 codes.
var settings = new CutOffSettings { PartClearance = 1.0 };
var cutoff = new CutOff(new Vector(25, 10), CutOffAxis.Vertical);
cutoff.Regenerate(plate, settings);
var codes = cutoff.Drawing.Program.Codes;
Assert.Equal(4, codes.Count);
}
[Fact]
public void CutOff_ShortSegment_FilteredByMinLength()
{
var pgm = new Program();
pgm.Codes.Add(new RapidMove(new Vector(20, 0.02)));
pgm.Codes.Add(new LinearMove(new Vector(30, 0.02)));
pgm.Codes.Add(new LinearMove(new Vector(30, 10)));
pgm.Codes.Add(new LinearMove(new Vector(20, 10)));
pgm.Codes.Add(new LinearMove(new Vector(20, 0.02)));
var drawing = new Drawing("sq", pgm);
var plate = new Plate(50, 50);
plate.Parts.Add(new Part(drawing));
var settings = new CutOffSettings { PartClearance = 0.0, MinSegmentLength = 0.05 };
var cutoff = new CutOff(new Vector(25, 10), CutOffAxis.Vertical);
cutoff.Regenerate(plate, settings);
var rapidCount = cutoff.Drawing.Program.Codes.Count(c => c is RapidMove);
var lineCount = cutoff.Drawing.Program.Codes.Count(c => c is LinearMove);
Assert.Equal(rapidCount, lineCount);
}
[Fact]
public void CutOff_Overtravel_ExtendsFarEnd()
{
var plate = new Plate(100, 50);
var settings = new CutOffSettings { Overtravel = 2.0 };
var cutoff = new CutOff(new Vector(25, 10), CutOffAxis.Vertical);
cutoff.Regenerate(plate, settings);
// Plate(100, 50) = Width=100, Length=50. Vertical cut runs along Y (Width axis).
// BoundingBox Y extent = Size.Width = 100. With 2" overtravel = 102.
// Default TowardOrigin: RapidMove to far end (102), LinearMove to near end (0).
var rapidMoves = cutoff.Drawing.Program.Codes.OfType<RapidMove>().ToList();
Assert.Single(rapidMoves);
Assert.Equal(102.0, rapidMoves[0].EndPoint.Y, 5);
}
[Fact]
public void CutOff_StartLimit_TruncatesNearEnd()
{
var plate = new Plate(100, 50);
var settings = new CutOffSettings();
var cutoff = new CutOff(new Vector(25, 10), CutOffAxis.Vertical)
{
StartLimit = 20.0
};
cutoff.Regenerate(plate, settings);
var rapidMoves = cutoff.Drawing.Program.Codes.OfType<RapidMove>().ToList();
Assert.Single(rapidMoves);
var linearMoves = cutoff.Drawing.Program.Codes.OfType<LinearMove>().ToList();
Assert.Single(linearMoves);
Assert.Equal(20.0, linearMoves[0].EndPoint.Y, 5);
}
[Fact]
public void CutOff_EndLimit_TruncatesFarEnd()
{
var plate = new Plate(100, 50);
var settings = new CutOffSettings();
var cutoff = new CutOff(new Vector(25, 10), CutOffAxis.Vertical)
{
EndLimit = 80.0
};
cutoff.Regenerate(plate, settings);
var rapidMoves = cutoff.Drawing.Program.Codes.OfType<RapidMove>().ToList();
Assert.Single(rapidMoves);
Assert.Equal(80.0, rapidMoves[0].EndPoint.Y, 5);
}
[Fact]
public void CutOff_BothLimits_LShapedCornerCut()
{
var plate = new Plate(60, 120);
var settings = new CutOffSettings { PartClearance = 0 };
var hCut = new CutOff(new Vector(85, 30), CutOffAxis.Horizontal)
{
EndLimit = 85.0
};
hCut.Regenerate(plate, settings);
var vCut = new CutOff(new Vector(85, 30), CutOffAxis.Vertical)
{
StartLimit = 30.0
};
vCut.Regenerate(plate, settings);
Assert.True(hCut.Drawing.Program.Codes.Count > 0);
Assert.True(vCut.Drawing.Program.Codes.Count > 0);
}
}