Well I'm happy to share that the math for distances was rather simple. The fortunate truth of the underlying math is that if you want a block to be twice as large, it must be twice as far away. An example is if you want a 6' block to look the same size as a 12' block the 12' block must be twice as far away. Being that the blocks where all reasonably simple sizes: e.g. 1/2 foot, 1 foot, 2 feet, 3 feet, up to 12 feet, the math worked out with a simple formula knowing that we wanted the 12' block 500 feet from the viewing point.
The only math which presented a bit of challenge was calculating the height of the cubes to make them line up as we desired. This involved some trigonometry so that the middle of each block appeared at the correct height. We had a grand vision to have some of the sides be perfectly straight but decided after experiencing significant challenges with raising the larger blocks to allow for some variation. The side we liked the most as far as vertical placement was the side that said One Giant Leap & Perspectives.
Hope that answered your questions.
Please keep sharing the images if you run across them.
The Perspectives Crew