Central-greening neighbourhood

Original image:

Rules:

4*4 square blocks, each of which has buildings and greening.

The size of square building equals to 1/9 area of block.

The surrounding 12 blocks have building along each side and green space in the center.

The central 4 blocks have one building in the center with surrounding greenland

Processing canvas:

code:

def setup():
    size(800,800)
    background(250,250,100)
    
    global road, blocksPerNeighborhood, blocksPerRow, blockLength, houseSetbacks, houseSize, houseQuantity
    
    road = 25 
    blocksPerNeighborhood = 16
    blocksPerRow = int(sqrt(blocksPerNeighborhood))
    blockLength = int((width/blocksPerRow)-road)
    houseSetbacks = 9
    houseQuantity = 9
    houseSize = int(blockLength/3) - houseSetbacks
    
def draw():
    background(255)
    #make blocks
    for b in range(blocksPerNeighborhood):
        fill(0, 150, 50)
        stroke(50, 50, 50)
        strokeWeight(2)
        col = b % blocksPerRow
        row = b / blocksPerRow
        xCol = col*(blockLength+road)
        yCol = row*(blockLength+road)
        rect(xCol,yCol,blockLength,blockLength)
        if b <> 5 and b <>6 and b <>9 and b <>10:
         #make houses in surrounding blocks
          fill(250,0,0)
          stroke(0,0,0)
          h = -1
        
          while h < houseQuantity-1:
            h = h+1
            if h <> 4:
             colhouse = h % 3
             rowhouse = h / 3
             rect(xCol+colhouse*(houseSize+houseSetbacks),yCol+rowhouse*(houseSize+houseSetbacks),houseSize,houseSize)
             print(houseSize)
             
        for b in (5,6,9,10):
         #make houses in central blocks
          fill(250,0,0)
          stroke(0,0,0)
          h = 4
          colhouse = h % 3
          rowhouse = h / 3
          rect(xCol+colhouse*(houseSize+houseSetbacks),yCol+rowhouse*(houseSize+houseSetbacks),houseSize,houseSize)
          print(houseSize)