There is no fixed definition of traditional origami. We may also call it classical origami. Instead of trying to give a well-defined notion to some class of conventional origami, we present here typical methods of traditional origami. In general traditional origami allow us to fold origami in a more complex way than Huzita-Justin folds.
Examples of traditional folds are given here. By unzipping it, we obtain the nb file.
To run the examples, we need to load ClassicalFold.enc. It is included in the Eos3-5-0 archive. A slightly improved revision of ClassicalFold.enc is available here. Please unzip it to obtain the enc file. Replace ClassicalFold.enc in the directory /Eos3-5-0/OrigamiBasics with the new one.
Our starting point in this direction of R&D is the following article we published in
T. Ida and H, Takahashi, A New Modeling of Classical Folds in Computational Origami. pp. 41 – 53, EPTCS 352Proceedings of the 13th International Conference on
Automated Deduction in Geometry Hagenberg, Austria/virtual, September 15-17, 2021, Editors P. Janičić and Z. Kovác.