Orbits

A synth based on a (quasi)-periodic 2-D orbit and a 2-D WaveTerrain.
I've added Ellipsoidal, orbit as well as Lorenz and Rossler attractors, thanks to this musicdsp article:
Rossler and Lorenz Oscillators
for the terrain I only have f(x,y) = (x²-1)(y²-1) for now