AJ Isaacs
bbc02f6f3f
Foundation for the geometry simplifier that will replace consecutive line segments with fitted arcs. Adds ArcCandidate data class, GeometrySimplifier with stub Analyze/Apply methods, and FitCircle using the Kasa algebraic least-squares method. Also adds InternalsVisibleTo for OpenNest.Tests on OpenNest.Core. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
44 lines
1.2 KiB
C#
44 lines
1.2 KiB
C#
using OpenNest.Geometry;
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using Xunit;
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namespace OpenNest.Tests;
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public class GeometrySimplifierTests
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{
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[Fact]
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public void FitCircle_PointsOnKnownCircle_ReturnsCorrectCenterAndRadius()
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{
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// 21 points on a semicircle centered at (5, 3) with radius 10
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var center = new Vector(5, 3);
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var radius = 10.0;
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var points = new List<Vector>();
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for (var i = 0; i <= 20; i++)
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{
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var angle = i * System.Math.PI / 20;
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points.Add(new Vector(
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center.X + radius * System.Math.Cos(angle),
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center.Y + radius * System.Math.Sin(angle)));
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}
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var (fitCenter, fitRadius) = GeometrySimplifier.FitCircle(points);
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Assert.InRange(fitCenter.X, 4.999, 5.001);
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Assert.InRange(fitCenter.Y, 2.999, 3.001);
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Assert.InRange(fitRadius, 9.999, 10.001);
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}
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[Fact]
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public void FitCircle_CollinearPoints_ReturnsInvalidCenter()
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{
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// Collinear points should produce degenerate result
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var points = new List<Vector>
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{
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new(0, 0), new(1, 0), new(2, 0), new(3, 0), new(4, 0)
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};
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var (fitCenter, _) = GeometrySimplifier.FitCircle(points);
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Assert.False(fitCenter.IsValid());
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}
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}
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