Returning A Table In CLR

Hi, I'm new to the forums, so hopefully I'm at the right place with my question...

Suppose I have a user-defined type in C#, which stands for simple point in 2D (let's call it Point). The type consists of two integer fields that represent the X and Y coordinate of the point. To make things a little more complicated, I want to store my values compressed using an algorithm, so I can't directly access X and Y without using a decompression algorithm.

I also have a table (PointTable), it's only column is called Data and is of type Point.

Now, writing and executing a simple query like

SELECT Data.ToString() FROM PointTable
is no problem at all.

What I want to do, is to be able to retrieve a table filled with the X and Y coordinates, so something like this:

SELECT PointX, PointY FROM GetTable()
where GetTable creates a table with columns PointX and PointY.

The function GetTable() should be implemented in C#, and work something like this: iterate through all Point values, decompress them, and create a new row from each Point.

I hope my intentions are clear and thanks for your help in advance!