base on Polygon Clipping and Offsetting - C++, C# and Delphi # Clipper2 ### A Polygon <a href="https://en.wikipedia.org/wiki/Clipping_(computer_graphics)">Clipping</a> and <a href="https://en.wikipedia.org/wiki/Parallel_curve">Offsetting</a> library (in C++, C# &amp; Delphi)<br> [](https://github.com/AngusJohnson/Clipper2/actions/workflows/actions_cpp.yml)&nbsp;[](https://github.com/AngusJohnson/Clipper2/actions/workflows/actions_csharp.yml)&nbsp;[](https://www.boost.org/LICENSE_1_0.txt) [](https://www.nuget.org/packages/Clipper2) [](http://www.angusj.com/clipper2/Docs/Overview.htm) The <b>Clipper2</b> 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 <a href="https://sourceforge.net/projects/polyclipping/"><b>Clipper</b></a> library that was written over 10 years ago. That library I'm now calling <b>Clipper1</b>, and while it still works very well, Clipper2 is [better](http://www.angusj.com/clipper2/Docs/Changes.htm) in just about every way. ### Compilers <b>Clipper2</b> 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 the [C++ compiled Clipper2 library](https://github.com/AngusJohnson/Clipper2/tree/main/DLL). (Since the C++ compiled code is [measurably](https://www.angusj.com/clipper2/Docs/Changes.htm) faster, C# and Delphi developers may also prefer this approach in applications where the library's performance is critical.) | Lang. | Requirements | | --- | --- | | [**C++:**](https://github.com/AngusJohnson/Clipper2/tree/main/CPP) | Requires C++17 (could be modified to C++11 with relatively minor changes), **or**| | [**C#:**](https://github.com/AngusJohnson/Clipper2/tree/main/CSharp) | The library uses Standard Library 2.0 but the sample code uses .NET6, **or**| | [**Delphi:**](https://github.com/AngusJohnson/Clipper2/tree/main/Delphi) | Compiles with any version of Delphi from version 7 to current.| ### Documentation <a href="http://www.angusj.com/clipper2/Docs/Overview.htm"><b>Extensive HTML documentation</b></a> <br><br> ### Examples <pre> //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);</pre> <pre> //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);</pre> <pre> //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);</pre>  <hr> ### Ports to other languages | lang. | link | | ------ | ------ | | **WASM** | https://github.com/ErikSom/Clipper2-WASM/ | | **Java** | https://github.com/micycle1/Clipper2-java/ | | **Kotlin** | https://github.com/Monkey-Maestro/clipper2-kotlin | | **golang** | https://github.com/epit3d/goclipper2 | ", Assign "at most 3 tags" to the expected json: {"id":"2238","tags":[]} "only from the tags list I provide: [{"id":77,"name":"3d"},{"id":89,"name":"agent"},{"id":17,"name":"ai"},{"id":54,"name":"algorithm"},{"id":24,"name":"api"},{"id":44,"name":"authentication"},{"id":3,"name":"aws"},{"id":27,"name":"backend"},{"id":60,"name":"benchmark"},{"id":72,"name":"best-practices"},{"id":39,"name":"bitcoin"},{"id":37,"name":"blockchain"},{"id":1,"name":"blog"},{"id":45,"name":"bundler"},{"id":58,"name":"cache"},{"id":21,"name":"chat"},{"id":49,"name":"cicd"},{"id":4,"name":"cli"},{"id":64,"name":"cloud-native"},{"id":48,"name":"cms"},{"id":61,"name":"compiler"},{"id":68,"name":"containerization"},{"id":92,"name":"crm"},{"id":34,"name":"data"},{"id":47,"name":"database"},{"id":8,"name":"declarative-gui "},{"id":9,"name":"deploy-tool"},{"id":53,"name":"desktop-app"},{"id":6,"name":"dev-exp-lib"},{"id":59,"name":"dev-tool"},{"id":13,"name":"ecommerce"},{"id":26,"name":"editor"},{"id":66,"name":"emulator"},{"id":62,"name":"filesystem"},{"id":80,"name":"finance"},{"id":15,"name":"firmware"},{"id":73,"name":"for-fun"},{"id":2,"name":"framework"},{"id":11,"name":"frontend"},{"id":22,"name":"game"},{"id":81,"name":"game-engine "},{"id":23,"name":"graphql"},{"id":84,"name":"gui"},{"id":91,"name":"http"},{"id":5,"name":"http-client"},{"id":51,"name":"iac"},{"id":30,"name":"ide"},{"id":78,"name":"iot"},{"id":40,"name":"json"},{"id":83,"name":"julian"},{"id":38,"name":"k8s"},{"id":31,"name":"language"},{"id":10,"name":"learning-resource"},{"id":33,"name":"lib"},{"id":41,"name":"linter"},{"id":28,"name":"lms"},{"id":16,"name":"logging"},{"id":76,"name":"low-code"},{"id":90,"name":"message-queue"},{"id":42,"name":"mobile-app"},{"id":18,"name":"monitoring"},{"id":36,"name":"networking"},{"id":7,"name":"node-version"},{"id":55,"name":"nosql"},{"id":57,"name":"observability"},{"id":46,"name":"orm"},{"id":52,"name":"os"},{"id":14,"name":"parser"},{"id":74,"name":"react"},{"id":82,"name":"real-time"},{"id":56,"name":"robot"},{"id":65,"name":"runtime"},{"id":32,"name":"sdk"},{"id":71,"name":"search"},{"id":63,"name":"secrets"},{"id":25,"name":"security"},{"id":85,"name":"server"},{"id":86,"name":"serverless"},{"id":70,"name":"storage"},{"id":75,"name":"system-design"},{"id":79,"name":"terminal"},{"id":29,"name":"testing"},{"id":12,"name":"ui"},{"id":50,"name":"ux"},{"id":88,"name":"video"},{"id":20,"name":"web-app"},{"id":35,"name":"web-server"},{"id":43,"name":"webassembly"},{"id":69,"name":"workflow"},{"id":87,"name":"yaml"}]" returns me the "expected json"