question: private boolean shouldCrop ( int width , int height ) { int pixelError = 1 ; pixelError += Math . round ( Math . max ( width , height ) / 1000f ) ; return ( mMaxResultImageSizeX > 0 && mMaxResultImageSizeY > 0 ) || Math . abs ( mCropRect . left - mCurrentImageRect . left ) > pixelError || Math . abs ( mCropRect . top - mCurrentImageRect . top ) > pixelError || Math . abs ( mCropRect . bottom - mCurrentImageRect . bottom ) > pixelError || Math . abs ( mCropRect . right - mCurrentImageRect . right ) > pixelError ; }
target:  Check whether an image should be cropped at all or just file can be copied to the destination path. For each 1000 pixels there is one pixel of error due to matrix calculations etc.