I am currently working on developing a single abstraction for representing internal arrays of pixels and converting all code working with such entities to use this abstraction. This includes, for example, eliminating the use of TempBufs for storing pixel data (but not for storing previews; that's someone else's problem), eliminating hard-coded dependencies on tile size outside of the tile code itself, and other such encapsulation. This abstraction is intended to be vaguely analoguous to the ImageData class in GEGL, although it is by no means an exact match. In most cases, PixelData objects will replace TileManagers as well as TempBufs. Please do not do anything related to tiles, tile managers, or pixel regions without consulting me first. -- I love catnip mice. It's why I chew their heads off. They're good for breakfast.
