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README.md

OpenGJK

A fast and robust C implementation of the Gilbert-Johnson-Keerthi (GJK) algorithm with interfaces for C#, Go, Matlab and Python. A Unity Plug-in is also available in another repository.

Useful links: API references, documentation and automated benchmarks.

Getting started

On Linux, Mac or Windows, install a basic C/C++ toolchain - for example: git, compiler and cmake.

Next, clone this repo:

git clone https://github.com/MattiaMontanari/openGJK

Then use these commands to build and run an example:

cmake -E make_directory build
cmake -E chdir build cmake -DCMAKE_BUILD_TYPE=Release .. 
cmake --build build 
cmake -E chdir build/examples/c ./example_lib_opengjk_ce

The successful output should be:

Distance between bodies 3.653650

However, if you do get an error - any error - please file a bug. Support requests are welcome.

Use OpenGJK in your project

The best source to learn how to use OpenGJK are the examples. They are listed here for C, C#, Go, Matlab and Python. I aim to publish few more for Julia.

Take a look at the examples folder in this repo and have fun. File a request if you wish to see more!

Contribute

You are very welcome to:

  • Create pull requests of any kind
  • Let me know if you are using this library and find it useful
  • Open issues with request for support because they will help you and many others
  • Cite this repository (a sweet GitHub feature) or my paper: Montanari, M. et at, Improving the GJK Algorithm for Faster and More Reliable Distance Queries Between Convex Objects (2017). ACM Trans. Graph.