Hmm, you’ll need to use the CGAffineTransform because it has a richer set of
functions than CATransform3D. This will only work if the 3D transform can be
converted to a CGAffineTransform, which it can if the rotation is purely in the
2D plane - i.e. no Z transformations.
CGAffineTransform cgt
Alright, I got something now that I believe works.
*let transform:CATransform3D = innerRing.layer.presentation()!.transform*
*let angle: CGFloat = atan2(transform.m12, transform.m11)*
*var testAngle = radiansToDegress(radians: angle)*
*if testAngle < 0 {*
*testAngle = 360 + testAngle*
*}*
*pri
I don't follow.
On Tue, Mar 14, 2017 at 11:29 PM Graham Cox wrote:
> Get the final transform, then use it to transform an angle of 0. The
> result is the angle.
>
> —Graham
>
>
>
> > On 15 Mar 2017, at 2:13 PM, Eric E. Dolecki wrote:
> >
> > Once done (I dispatch after the randomSpeed duration)
Get the final transform, then use it to transform an angle of 0. The result is
the angle.
—Graham
> On 15 Mar 2017, at 2:13 PM, Eric E. Dolecki wrote:
>
> Once done (I dispatch after the randomSpeed duration), I'd like to
> determine the angle it's currently at.
>
> *let transform:CATransfo
I have a view that I am rotating a lot, often more than 360 degrees (spins
around a few times). Each time it stops, I want to determine the resulting
"visual" angle. How do I go about doing that?
rotateView is a configured CABasicAnimation:
*let rotateView = CABasicAnimation()*
*let randonAngle =
