Game Development Reference
In-Depth Information
(a)
y
Rotate around
y axis
x
Rotate around
x axis
z
Rotate around
y axis
(b)
pitch
x
(c)
roll
z
(d)
y
yaw
Fig 2.21 Individual rotations about the x , y , and z axes in 3D space.
While this is a simplistic examination of gimbals, the issue of gimbal lock is a
reality. It is a mechanical reality that was experienced by the astronauts of the
Apollo missions and it is a virtual reality when using Euler angles to rotate
3D objects. Just as the gyroscope compounds the rotations of the outer
gimbal inward, multiplying x , y , and z angle rotations one after the other in
software systems produces the same errors.
 
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