Fix wrong axis when checking for blocked axis

[chipironcin]

This PR fixes wrong axis blocking.

From documentation:

    axis:              null,   // What axis should be disabled. Can be X or Y.

Currently, when setting data-tilt-axis='x', y axis gets blocked and viceversa.

With this change, setting data-tilt-axis='x' will block x axis.

[micku7zu]

How did it get so far without anyone noticing this? Thanks @chipironcin!
I need to make a new version and update the landing page as well... tomorrow 😄

[micku7zu]

Actually, I just reversed it until tomorrow when I will have a fresh look at all this axis thing 😄
Thanks!

I want to be in sync with tilt.js original library, and I will check tomorrow because it's too late right now.

[chipironcin]

After taking a look at tilt.js and its main page, it seems it is not the code which is wrong.
But the documentation is a bit misleading.

TL;DR
Setting data-tilt-axis you are saying you want to tilt along that axis, which is equals to disabling that axis in terms of rotation.

---

axis: null, // What axis should be disabled. Can be X or Y.

If you set data-tilt-axis='x', you are disabling the X axis, disabling the rotation on X axis. But in terms of tilt, you are saying you want to tilt along the X axis.

The rotateX() method rotates an element around its X-axis at a given degree
"rotateX(" + (this.settings.axis === "x" ? 0 : values.tiltY) + "deg) "

So the code is fine as it was.
The above snippet means that if we said we want tilt on x axis, it will set rotateX to 0 (no X axis rotation = no Y axis tilt)

---

I am sorry for the confusion this PR may have generated and I am happy you reverted it right away.

I will create another PR for fixing only the documentation.
Will do the same to tilt.js project ;)

Thanks for this awesome work!

[micku7zu]

Hi @chipironcin, I still didn't have time to have a look, and I saw that the original project didn't merge the PR. I will automatically merge the PR if it will be merged in tilt.js or if I will have some time to clarify this.

Sorry for the delay :)

Thanks again for your help!

[chipironcin]

Dont worry, I will ping you
gijsroge/tilt.js#26
#28