damiandixon/clipper2

Polygon Clipping and Offsetting library

Clipper2

A Polygon Clipping and Offsetting library (in C++, C# & Delphi)

  

The Clipper2 library performs intersection, union, difference and XOR boolean operations on both simple and complex polygons. It also performs polygon offsetting. This is a major update of my original Clipper library that written over 10 years ago. That library I'm now calling Clipper1 and while it still works very well, Clipper2 is better in just about every way.

Documentation

Extensive HTML documentation

Examples

      //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);

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Ports to other languages

Java: https://github.com/micycle1/Clipper2-java/