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I am creating a subclass to LuminanceSource. Is there a reason why I should expect to or have to implement rotateCounterClockwise()?
Implications to performance or reliability (or both)?
You can always have
isRotateSupported()and make that method throw an exception if you don’t want to implement it.It is provided because the interface does not know what your internal structure is like, so otherwise a rotation involves converting your data to a common format, performing the transform, then converting the common format data back into your format.