2018, Oded Stein, Eitan Grinspun and Keenan Crane


The code that we wrote is released under the GNU General Public License, version 2, which can be found in the file GPLv2.txt.

The code uses the Libigl library which is licensed under the Mozilla Public License 2.0, with some parts licensed under the GNU GPL. libigl can be found here: https://github.com/libigl/libigl.
The licenses used in libigl and further license info on libigl can be found in the file libigl/LICENSE.md

The numerical diagonalization of 3x3 matrices code is not by us, it is a slightly modified code published by Joachim Kopp under the GNU Lesser General Public License, version 2.1 here: https://www.mpi-hd.mpg.de/personalhomes/globes/3x3/.
The GNU LGPLv2.1 can be found in the file LGPLv2.1.txt


If you are interested in obtaining the code with a different license, please contact the authors:
Oded Stein <oded.stein@columbia.edu>
Eitan Grinspun <eitan@cs.columbia.edu>
Keenan Crane <kmcrane@cs.cmu.edu>