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Asked: 2026-06-14T12:25:40+00:00

I’m trying to use CIDotScreen in an iOS app. CIDotScreen should be supported under

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I’m trying to use CIDotScreen in an iOS app. CIDotScreen should be supported under iOS 6, however when I create a filter with:

[CIFilter filterWithName:@"CIDotScreen" keysAndValues:kCIInputImageKey, beginImage, kCIInputCenterKey...

The compiler complains on kCIInputCenterKeynot being available on iOS.

Any ideas?

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1 Answer

  1. Editorial Team

    kCIInputCenterKey

    A key for a CIVector object that specifies the center of the area, as x and y- coordinates, to be filtered.

Available in OS X v10.5 and later. Not available in iOS.

    Availables Keys for input parameters to filters in iOS.

    1. kCIOutputImageKey;
    2. kCIInputBackgroundImageKey;
    3. kCIInputImageKey;
    4. kCIInputVersionKey;

    So we need to accept the compiler’s complaint

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