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My application is mainly based on image processing.

In my application i want to fade a part of a circular area of UIImage. The circle can be draggable any where on the image.

Please tell me is it possible to fade a part of the image. If yes can any one give some idea. Thanks in advance.

Naveen
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  • Go through core image filter refrence http://developer.apple.com/library/ios/#documentation/GraphicsImaging/Reference/CoreImageFilterReference/Reference/reference.html#//apple_ref/doc/uid/TP40004346 this may help you – superGokuN Jul 30 '12 at 12:38
  • What do you want exactly ? Do you want to make fade your background image where you drag your cirleImage only for visibility or permanent ? visibility like drag a lance on image and permanently - like eraser. What do you want ? – TheTiger Jul 30 '12 at 12:58
  • http://stackoverflow.com/a/5632437/1059705 – Bala Jul 30 '12 at 13:34

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If you want to do this the easy way. Put 2 UIImageViews on top of eachother. And add a (round) mask to the upper view: https://stackoverflow.com/a/7228648/696440

Community
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basvk
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