Hi Hamish,
Am I reading correctly that you have two IKImageViews stacked on top
on one another?
Is there a reason that you aren't using Core Image and using one of
the compositing filters to produce a "difference" that you can then
display?
do the items you are currently displaying in the two IKImageViews need
to be moved (dynamically , by the user?) in relation to one another?
curiously,
douglas
On Jul 8, 2008, at 12:33 PM, hsanderson wrote:
Hi all,
I am trying to write a basic image diff-ing tool consisting of two
overlaid IKImageViews, with the topmost view having a Difference
Blend Mode compositing filter applied to it in IB's Effects palette.
So far so good... until I call -setImageWithURL: to put images into
these views, at which point the images appear (yay!) and the filter
effects disappear (!yay).
I've tried the same thing with other background and compositing
filters just to check, and in each case the applied effects can be
seen on an empty IKImageView but vanish as soon as I call -
setImageWithURL:.
Any ideas, advice, etc? I'm new to IKImageView/CoreImage/etc. so am
not sure if I'm doing something wrong/stupid in my code, or if it's
the Leopard APIs that are playing up.
Thanks,
Hamish
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