by kitwallace, published
A model-based generator for Tetris shapes, as a solid, outline or box.
The development of the code is described in http://kitwallace.co.uk/Blog/item/2013-02-10T00:00:00Z
Customizer works now that I've added the "customizer" tag !
The script uses minkowski() on a shape subtracted from a large cube to do inset - if base is large, the size of the cube may not be large enough and the shape may get clipped - TBD