TiGL is a parametric aircraft geometry modeler. Using the CPACS file format and TiGL, you can model a wide range of aircraft, spacecraft and rotorcraft.


What TiGL can do for you

CI workflow for main branch codecov Apache 2.0 Install with conda Cite-us Documentation

The TiGL Geometry Library can be used for the computation and processing of aircraft geometries stored inside CPACS files. TiGL offers many geometry related functions such as

  • Point retrieval functions to compute points on the aircraft surface
  • Intersection functions to compute the intersection of the aircraft with planes
  • Export functions for standard CAD file formats (STEP + IGES) or mesh formats, including VTK, Collada, and STL.

The TiGL library uses the OpenCASCADE CAD kernel to represent the airplane geometry by NURBS surfaces. The library provides external interfaces for C, C++, Python, Java, MATLAB, and FORTRAN.

TiGL is shipped with the Qt based TiGL Viewer for visualizing aircraft geometries or viewing CAD files.

Screenshot of the TiGL Viewer



Please head over to our TiGL website: https://dlr-sc.github.io/tigl/#news

Cite us

TiGL is available as Open Source and we encourage anyone to make use of it. If you are applying TiGL in a scientific environment and publish any related work, please cite the following article:

Siggel, M., Kleinert, J., Stollenwerk, T. et al.: TiGL: An Open Source Computational Geometry Library for Parametric Aircraft Design, Math.Comput.Sci. (2019). https://doi.org/10.1007/s11786-019-00401-y

A free copy of the paper is offered here: https://rdcu.be/bIGUH

Logo of TiGL
Programming languages
  • C++ 78%
  • C 6%
  • CMake 6%
  • Python 5%
  • Java 3%
  • GLSL 1%
  • SWIG 1%
  • Apache-2.0
</>Source code

Participating organisations

German Aerospace Center (DLR)

Reference papers



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