import rhinoscriptsyntax as rs
import random as ran

# delete everything and start from scratch
allobjs = rs.AllObjects()
rs.DeleteObjects(allobjs)

bsize = 10            # side length of box
dist = 2              # distance between boxes
offs = bsize + dist   # offset of boxes
num = 30              # number of boxes in one row


# create a box
corners = [(0,0,0), (bsize,0,0), (bsize,bsize,0), (0,bsize,0),
           (0,0,bsize),(bsize,0,bsize),(bsize,bsize,bsize),(0,bsize,bsize)]

rs.EnableRedraw(False)

for i in range(num):
    for j in range(num):
        myran = ran.randint(0,9)
        if (myran >= 2):
            if ((i+j)%5) and ((i-j)%6):
                 box = rs.AddBox(corners)
                 rs.MoveObject(box, (i*offs,j*offs,0))

"""
for i in range(num):
    for j in range(num):
        if ((i+j)%2) or ((i-j)%4):
            box = rs.AddBox(corners)
            rs.MoveObject(box, (i*offs,j*offs,0))
"""
rs.EnableRedraw(True)