-1 to 1 action space meaning

[zcase]

@JacopoPan when doing the action space from -1 to 1 while training and RL model, does this mean that the drone is in 3D mode and that the values between -1 to 0 mean that the rotors are spinning in reverse for their position and 0 to 1 mean they are spinning in the normal rotation for its position? Does that question make sense? if not let me know and I'll restate.

[JacopoPan]

The thrust on the motors is always positive: the negative values are below the thrust necessary to hover (1/4 the gravity on the drone), the positive values are above, see this line:

gym-pybullet-drones/gym_pybullet_drones/envs/BaseRLAviary.py

Line 192 in 50d1a95

rpm[k,:] = np.array(self.HOVER_RPM * (1+0.05*target))