chua-attractor clothoid (euler's spiral) torus examples in javascript

yes, I know it's not so "easy" to create these figures, curvatures etc.
but again:

I need some solutions to include a javascript based example which describes a clothoid (eulers spiral, cornu)

other questions:
exists some solutions to build a chua_attractor or smilar curvatures (excluding Lorenz and Roessler)?
exists some hints to create a mesh like a torus (Nordstrand, ,Standard-, elliptical-, Figure8-Torus) with javascript?

of course under MaxMsp(cycling74) can a torus build with the assistance by Jitter but this"graphic_vid_machine" is too cpu-intensive for "older" computers

thanks for serious help and assistance