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Port upstream earcut v3.1.0–v3.2.3 (radix sort, block-bbox index, Delaunay refinement) #23

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Merged
MichaConrad merged 5 commits into from
Jul 8, 2026
Merged

Port upstream earcut v3.1.0–v3.2.3 (radix sort, block-bbox index, Delaunay refinement) #23

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14948e1
Initial plan
Copilot Jul 8, 2026
a17c7e9
feat: port upstream earcut v3.1.0–v3.2.3 changes (radix sort, block i…
Copilot Jul 8, 2026
9f80de3
refactor: remove mutable scratch state from Earcut
Copilot Jul 8, 2026
6632e14
chore: address validation feedback
Copilot Jul 8, 2026
291576b
version up
MichaConrad Jul 8, 2026
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2 changes: 2 additions & 0 deletions bench/Earcut.Benchmarks/Program.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -16,6 +16,8 @@ public static void Main(string[] args)
m.TriangulateSquare();
m.TriangulateWater();
m.TriangulateWaterHuge();
m.TriangulateWaterHuge3();
m.RefineWaterHuge3();
m.TriangulateDude();
m.TriangulateComplexPolygon();

Expand Down
29 changes: 28 additions & 1 deletion bench/Earcut.Benchmarks/TriangulationBenchmarks.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -20,6 +20,9 @@ public class TriangulationBenchmarks
private int[] _waterHoles = null!;
private double[] _waterHugeVertices = null!;
private int[] _waterHugeHoles = null!;
private double[] _waterHuge3Vertices = null!;
private int[] _waterHuge3Holes = null!;
private int[] _waterHuge3Triangles = null!;

[GlobalSetup]
public void Setup()
Expand All @@ -44,6 +47,10 @@ public void Setup()

// Load water-huge fixture
LoadFixture("water-huge", out _waterHugeVertices, out _waterHugeHoles);

// Load water-huge3 fixture
LoadFixture("water-huge3", out _waterHuge3Vertices, out _waterHuge3Holes);
_waterHuge3Triangles = Earcut.Triangulate(_waterHuge3Vertices, _waterHuge3Holes);
}

private static void LoadFixture(string name, out double[] vertices, out int[] holes)
Expand Down Expand Up @@ -73,7 +80,7 @@ public IReadOnlyList<int> TriangulateSquare()
[Benchmark]
public IReadOnlyList<int> TriangulateComplexPolygon()
{
var r = Earcut.Triangulate(_complexPolygon);
var r = Earcut.Triangulate(_complexPolygon);
if (r.Length == 0)
{
throw new Exception();
Expand Down Expand Up @@ -117,4 +124,24 @@ public IReadOnlyList<int> TriangulateWaterHuge()

return r;
}

[Benchmark]
public IReadOnlyList<int> TriangulateWaterHuge3()
{
var r = Earcut.Triangulate(_waterHuge3Vertices, _waterHuge3Holes);
if (r.Length == 0)
{
throw new Exception();
}

return r;
}

[Benchmark]
public void RefineWaterHuge3()
{
// Copy the pre-computed triangles so each run starts from the same state.
var triangles = (int[])_waterHuge3Triangles.Clone();
Earcut.Refine(triangles, _waterHuge3Vertices);
}
}
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