Re: Rotation in CAAnimation layers
Re: Rotation in CAAnimation layers
- Subject: Re: Rotation in CAAnimation layers
- From: DKJ <email@hidden>
- Date: Sat, 25 Oct 2008 06:31:36 -0700
I do this with a CAAnimation layer myLayer:
myLayer.shadowOffset = CGSizeMake( 5.0, 5.0 );
and get a shadow on the upper and right edges. But when I rotate the
layer 180 degrees, the shadow then appears on the lower and left
edges. Real shadows don't do that.
If the object were circular, I'd just put another stationary layer
underneath and attach the shadow to it. But with other shapes this
won't work.
So finally, my question: Is there an easy way of calculating the
position and appearance of the shadow for non-circular shapes? (By
"easy" I mean one that I can just copy from somewhere.) If not I'll
try to figure it out myself; but I don't want to re-invent the wheel.
dkj
On 24 Oct, 2008, at 18:11, douglas welton wrote:
On Oct 24, 2008, at 6:50 PM, DKJ wrote:
Is there an easy way to provide a realistic shadow for a (non-
circular) layer rotating round the z-axis? (I know
layer.rotateShadow = YES is too much to hope for.)
To get a "realistic" answer, it might help if you provide a little
more specific information about 1) what you are trying to do, 2)
what is not working and 3) what you have tried. (consult: <http://www.catb.org/~esr/faqs/smart-questions.html
>)
regards,
douglas
============================
Hatzic Intellectual Software
Victoria BC, Canada
www.hatzicware.com
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