in my app i am having one image view which contains the picture of user taken from either camera or phone library(album).And the user is allowed to select some product from a list of products for trying on his picture. I am able to do all this stuff and also i am able to do the panning, zooming and also rotation on the product. But my problem is, when i am moving this product it is going out of the image view that contains the users picture and same thing happening with the zooming ..Please help me through this..Thanks in advance..
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You need to restrict it in the frame of outerview.
so CGRECT methods can serve your purpose.
such as
for reference see this
and for zooming purpose see this