Animation with WebGL and Three.js (4)

Let’s see with some of the special cases. Again from Landau and Lifshitz:

Obviously, the simplest case occurs when I1=I2=I3, in which case Omega becomes a constant vector, as is shown in the figure. The parameters employed are:

Ibody.set(1,0,0, 0,1,0, 0,0,1);
L.set(1, 2, 3);

If we let

L.set(1, 1, 1);

we will get:

Note that the scale of the y-axis is largely different in two figures.