@class CIImage, CIVector, NSNumber; @interface CITorusLensDistortion : CIFilter { CIVector *inputCenter; NSNumber *inputRadius; NSNumber *inputWidth; NSNumber *inputRefraction; } @property (retain, nonatomic) CIImage *inputImage; + (id)customAttributes; - (id)outputImage; - (id)_CITorusRefraction; @end