Making squares instead of circles

Hi :-)

I need some help. I have previously made a project, where I use circular buildings in lines in a square (See the picture) - like a city. And Now I want to make my project, where my buildings instead are squares. Can someone help me?

Please notice that I still want that the buildings became smaller in size dependent on where you are at my road, if you open the rhino document.

I have laid my projects up in Rhino, grasshopper and a picture of how it is circular now.