The algorithm used for generating 3D models is from the following paper: Jun Mitani, Hiromasa Suzuki, Hiroshi Uno, "Computer Aided Design for Origamic Architecture Models with Voxel Data Structure",
IPSJ Journal, Vol.44, No.5, pp.1372-1379, 2003.(in Japanese)(PDF)
You are free to use this software for any purpose, including personal use, workshop use, and
commercial product development.
I would be very happy if you respect the developer, cite the software appropriately, and report on
your use cases to mitani@cs.tsukuba.ac.jp