transformation matrix for touchscreen rotations
Here's a link to Transformation Matrix info
It makes a lot more sense represented two dimensionally.
Identity:
⎡ 1 0 0 ⎤
⎜ 0 1 0 ⎥
⎣ 0 0 1 ⎦
Right rotation:
⎡ 0 1 0 ⎤
⎜ -1 0 1 ⎥
⎣ 0 0 1 ⎦
Left rotation:
⎡ 0 -1 1 ⎤
⎜ 1 0 0 ⎥
⎣ 0 0 1 ⎦
This is how I came up with values for my rotate script.
Tags: xorg
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