有没有办法在 VPython 中获取对象的当前旋转？

Question

I have a object that I want to get the current rotation of, but I cannot seem to find any information on how to do this. The only way I could think of was to add a variable onto the object and change it exactly how much I rotate the object.

test.rotate(test.rotational_velocity * dt, vec(0, 0, 1))
test.angle += test.rotational_velocity * dt

Is there any better method to get the current rotation of an object in VPython?

Answer 1

From the documentation on vectors at glowscript.org (click "Help"):

diff_angle(A,B) = A.diff_angle(B), the angle between two vectors, in radians