96 lines
3.3 KiB
C#
96 lines
3.3 KiB
C#
using OpenNest.Engine.Fill;
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using OpenNest.Engine.Strategies;
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using OpenNest.Geometry;
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namespace OpenNest.Tests.Strategies;
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public class StripeFillerTests
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{
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private static Drawing MakeRectDrawing(double w, double h, string name = "rect")
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{
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var pgm = new OpenNest.CNC.Program();
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pgm.Codes.Add(new OpenNest.CNC.RapidMove(new Vector(0, 0)));
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pgm.Codes.Add(new OpenNest.CNC.LinearMove(new Vector(w, 0)));
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pgm.Codes.Add(new OpenNest.CNC.LinearMove(new Vector(w, h)));
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pgm.Codes.Add(new OpenNest.CNC.LinearMove(new Vector(0, h)));
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pgm.Codes.Add(new OpenNest.CNC.LinearMove(new Vector(0, 0)));
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return new Drawing(name, pgm);
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}
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private static Pattern MakeRectPattern(double w, double h)
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{
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var drawing = MakeRectDrawing(w, h);
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var part = Part.CreateAtOrigin(drawing);
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var pattern = new Pattern();
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pattern.Parts.Add(part);
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pattern.UpdateBounds();
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return pattern;
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}
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[Fact]
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public void FindAngleForTargetSpan_ZeroAngle_WhenAlreadyMatches()
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{
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var pattern = MakeRectPattern(20, 10);
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var angle = StripeFiller.FindAngleForTargetSpan(
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pattern.Parts, 20.0, NestDirection.Horizontal);
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Assert.True(System.Math.Abs(angle) < 0.05,
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$"Expected angle near 0, got {OpenNest.Math.Angle.ToDegrees(angle):F1}°");
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}
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[Fact]
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public void FindAngleForTargetSpan_FindsLargerSpan()
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{
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var pattern = MakeRectPattern(20, 10);
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var angle = StripeFiller.FindAngleForTargetSpan(
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pattern.Parts, 22.0, NestDirection.Horizontal);
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var rotated = FillHelpers.BuildRotatedPattern(pattern.Parts, angle);
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var span = rotated.BoundingBox.Width;
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Assert.True(System.Math.Abs(span - 22.0) < 0.5,
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$"Expected span ~22, got {span:F2} at {OpenNest.Math.Angle.ToDegrees(angle):F1}°");
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}
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[Fact]
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public void FindAngleForTargetSpan_ReturnsClosest_WhenUnreachable()
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{
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var pattern = MakeRectPattern(20, 10);
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var angle = StripeFiller.FindAngleForTargetSpan(
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pattern.Parts, 30.0, NestDirection.Horizontal);
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Assert.True(angle >= 0 && angle <= System.Math.PI / 2);
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}
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[Fact]
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public void ConvergeStripeAngle_ReducesWaste()
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{
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var pattern = MakeRectPattern(20, 10);
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var (angle, waste, count) = StripeFiller.ConvergeStripeAngle(
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pattern.Parts, 120.0, 0.5, NestDirection.Horizontal);
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Assert.True(count >= 5, $"Expected at least 5 pairs, got {count}");
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Assert.True(waste < 18.0, $"Expected waste < 18, got {waste:F2}");
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}
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[Fact]
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public void ConvergeStripeAngle_HandlesExactFit()
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{
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var pattern = MakeRectPattern(10, 5);
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var (angle, waste, count) = StripeFiller.ConvergeStripeAngle(
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pattern.Parts, 100.0, 0.0, NestDirection.Horizontal);
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Assert.Equal(10, count);
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Assert.True(waste < 0.2, $"Expected near-zero waste, got {waste:F2}");
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}
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[Fact]
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public void ConvergeStripeAngle_Vertical()
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{
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var pattern = MakeRectPattern(10, 20);
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var (angle, waste, count) = StripeFiller.ConvergeStripeAngle(
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pattern.Parts, 120.0, 0.5, NestDirection.Vertical);
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Assert.True(count >= 5, $"Expected at least 5 pairs, got {count}");
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}
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}
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