There was a similar origami simulator that I saw from hn a while back:

http://www.amandaghassaei.com/projects/origami_simulator/

http://apps.amandaghassaei.com/OrigamiSimulator/

This looks really helpful... I’ve been looking for vector crease patterns for simple origami (cranes, etc). They’re available for complex patterns, but I’ve never found a good repository for them for more basic origami.

Can I suggest clicking to toggle interactivity off/on.

for each step.

Btw, moving the mouse to effect the code sample. Not sure I've ever seen that before. Truely inspiring.