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TheClipper2 library performsintersection,union,difference andXOR boolean operations on both simple and complex polygons. It also performs polygon offsetting. This is a major update of my originalClipper library that was written over 10 years ago. That library I'm now callingClipper1, and while it still works very well, Clipper2 isbetter in just about every way.

Clipper2 can be compiled using either C++, or C#, or Delphi Pascal. The library can also be accessed from other programming languages by dynamically linking to exported functions in theC++ compiled Clipper2 library. (Since the C++ compiled code ismeasurably faster, C# and Delphi developers may also prefer this approach in applications where the library's performance is critical.)

Extensive HTML documentation

      //C++      Paths64 subject, clip, solution;      subject.push_back(MakePath({100, 50, 10, 79, 65, 2, 65, 98, 10, 21}));      clip.push_back(MakePath({98, 63, 4, 68, 77, 8, 52, 100, 19, 12}));      solution = Intersect(subject, clip, FillRule::NonZero);

      //C#      Paths64 subj = new Paths64();      Paths64 clip = new Paths64();      subj.Add(Clipper.MakePath(new int[] { 100, 50, 10, 79, 65, 2, 65, 98, 10, 21 }));      clip.Add(Clipper.MakePath(new int[] { 98, 63, 4, 68, 77, 8, 52, 100, 19, 12 }));      Paths64 solution = Clipper.Intersect(subj, clip, FillRule.NonZero);

      //Delphi      var         subject, clip, solution: TPaths64;      begin        SetLength(subject, 1);        subject[0] := MakePath([100, 50, 10, 79, 65, 2, 65, 98, 10, 21]);        SetLength(clip, 1);        clip[0] := MakePath([98, 63, 4, 68, 77, 8, 52, 100, 19, 12]);        solution := Intersect( subject, clip, frNonZero);