Regarding the touch coordinates transformation, the mapping is the following for most devices:
Code:
0 → Identity
1 → Sxy My
2 → Mx My
3 → Sxy Mx
Where
S means
swap and
M means
mirror.
The mapping for the
Aura H₂O Edition 2 Version 1 is:
Code:
0 → Mx
1 → Sxy
2 → My
3 → Sxy Mx My
The swapping pattern is identical and the mirroring pattern is shifted downward. Hence the only device specific information needed to compute the transformation given the rotation is the center of the mirroring pattern.