As you see in the image, I am trying to spread rectangles along an irregular surface that was formed by more than 4 curves (lines). The problem is I can spread rectangles in a small area and not through all the surface.

My script is:

```
# construct rectangle pattern on a floor 2D plan
# Nabil Mohareb
import rhinoscriptsyntax as rs
def startPattern(surface, pattU, pattV):
# dictionary of the points
ptMTX = {}
# get domain of the surface
udomain = rs.SurfaceDomain(surface,0)
vdomain = rs.SurfaceDomain(surface,1)
# calculate the steps ofr U (X) & V (Y), distance of the grid
stepU = (udomain [1] - udomain [0])/pattU
stepV = (vdomain [1] - vdomain [0])/pattV
#plot points on surface
for i in range (pattU+1):
for j in range (pattV+1):
#define u & v in terms of steps values, i, j
u = udomain[0] + stepU*i
v = vdomain[0] + stepV*j
# diviede the surface and draw points on surfaces
point = rs.EvaluateSurface (surface, u, v)
if rs.IsPointOnSurface(surface, point) != False:
rs.AddPoint(point)
# write the points in the dictionary
ptMTX [(i,j)] = point
#loop to create geometry
for i in range (6,12): #(6,12) # this is the problem, what range should I use?
for j in range (6,12):# the numbers are just playing around, but I think this is the problem
if i>0 and j>0:
curverec= rs.AddPolyline((ptMTX[(i,j)], ptMTX[(i-1,j)],ptMTX[(i-1,j-1)], ptMTX[(i,j-1)], ptMTX[(i,j)]))
#add surface to the small rectangles
smlSurf= rs.AddPlanarSrf(curverec)
# find the center of the small rectangle and add point to it
center = rs.SurfaceAreaCentroid(smlSurf)
rs.AddPoint( center[0] )
def main():
#select the plan lines
plane = rs.GetObjects('select curves please', rs.filter.curve)
pattU = rs.GetInteger('write U (x) value', 12)
pattV = rs.GetInteger('write V (y) value', 12)
#join the plan lines
planeJoined= rs.JoinCurves(plane)
#convert plane to surface
surface =rs.AddPlanarSrf(planeJoined)
# call the function
startPattern(surface, pattU, pattV)
main ()
```