import rhinoscriptsyntax as rs
import random as ran

# alles loeschen
allobjs = rs.AllObjects()
rs.DeleteObjects(allobjs)

bsize = 5            #seitenlaenge der box
dist = 20            #abstand zwischen boxen
offs = bsize + dist  #offset der boxen
num = 21             #anzahl der boxen in einer reihe

# erstelle eine 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):
        for p in range(num):
            myran = ran.randint(0,9)
            if (myran > 1):
                if ((i+j-p)%2) and ((i-j+p)%4)and ((i+j+p)%2):
                    box = rs.AddBox(corners)
                    rs.MoveObjects(box, (i*offs, j*offs, p*offs))
                    rs.ObjectColor(box, (i*245/num, j*225/num, p*250/num))

rs.EnableRedraw(enable=True)