[fxtf-drafts] [motion] offset-rotation should only do path-relative rotation

fantasai has just created a new issue for 
https://github.com/w3c/fxtf-drafts:

== [motion] offset-rotation should only do path-relative rotation ==
Currently `offset-rotation` can specify an arbitrary rotation as well 
as a path-relative rotation. Afaict, this duplicates functionality in 
the `rotate` property, and therefore isn't really necessary.

The current syntax is
```
offset-rotation: [ auto | reverse] || <angle>
```

I propose
```
offset-rotation: none | forwards | backwards | <angle>
```
Where `forwards` computes to `0deg`, `backwards` computes to `180deg`,
 and any value other than `none` tracks the path tangent.  (The choice
 of `forwards` and `backwards` keywords is to match the pair in 
`animation-fill-mode`.)

Alternatively, the <angle> value could also be dropped in favor of 
further tweaking with `rotate`.

Please view or discuss this issue at 
https://github.com/w3c/fxtf-drafts/issues/69 using your GitHub account

Received on Saturday, 5 November 2016 02:56:46 UTC