so I just vaguely understand quaternion as a vector with weight/scalar.I prefer thinking of a quaternion as an object that contains a vector and a scalar.
So I tried to visualize it in CryEngine.
As you can see, the code above will draw the velocity vector and velocity quaternion (I guess). But I don't understand what the meaning of the quaternion in the image above. 3 lines red,green,blue and a red square in the middle - I don't get what it's trying to show?