Rotated keys are displayed incorrectly when board is flipped.

[cdemeijer]

I'm working on a handwired board with rotated keys. In order to make a checklist I thought it would be easy to have a flipped layout (just to print out a hard copy).
Then I noticed something seemed off :)

Will try to look if I can fix this 'issue' myself.

[mullinmax]

I'm not sure if this is helpful but it looks to me like the keys are rotating around an incorrect point. KLE's method for that is confusing at best

[cdemeijer]

The obvious workaround in my case would be to print the mirrored image but where's the fun in that?
The two halves are rotated around the centers of the 'D' and 'K' keys.

I believe that the way to get this displayed correctly would be to use the centers of the keys and work with the css transform:rotate and transform:origin. I.e. let the browser handle the rendering. But I have a hard time trying to understand the math used to determine the correct location of the keys.

I'll simplify this case with a 6 key keyboard hopefully this weekend.

[cdemeijer]

Adding test raw KLE, picture, wiring and flipped wiring.
Using 1U only keys.

[{x:5,a:7},"E"],
[{x:5},"F"],
[{r:8,rx:0.5,ry:1.5,y:-1.5,x:-0.5},"A"],
[{x:-0.5},"B"],
[{r:-8,rx:3.5,y:-1.5,x:-0.5},"C"],
[{x:-0.5},"D"]

[cdemeijer]

Fixing just the rotation doesn't quite cut it :/

[cdemeijer]

Yeah definitely a rotation point issue @mullinmax 👍
Rotating both 'columns' 45 degrees around the B and D centers makes the issue even more obvious. Also thought I could add the keymap, that provided another surprise:

Ooowwwkaaayyy.... 🤦 🤒

[cdemeijer]

Sorry, that last image was a lie. I was testing with modified code :(

[mullinmax]

I'll take a look at it later and see if I can't find the right formula. I think KLE sets it up oddly. It probably makes sense to write a function the just aligns keys based on the center of the switch and not the top left corner.

[cdemeijer]

Looking at the html it looks like KLE already does exactly that.

[cdemeijer]

This looks like more of a rewrite than I bargained for :/