# 3D surface fitting to N random points # using inverse distance weighted averages. # FB - 201003162 from PIL import Image import random import math # image size imgx = 512 imgy = 512 image = Image.new("RGB", (imgx, imgy)) # random color palette coefficients kr = random.randint(1, 7) kg = random.randint(1, 7) kb = random.randint(1, 7) ir = 2**kr ig = 2**kg ib = 2**kb jr = 2**(8-kr) jg = 2**(8-kg) jb = 2**(8-kb) # select n random points n=random.randint(5, 50) arx=[] ary=[] arz=[] for i in range(n): arx.append(random.randint(0, imgx-1)) ary.append(random.randint(0, imgy-1)) arz.append(random.randint(0, 255)) for y in range(imgy): for x in range(imgx): flag=False sumv=0.0 sumw=0.0 for i in range(n): dx=x-arx[i] dy=y-ary[i] if(dx==0 and dy==0): flag=True z=arz[i] break else: # wgh=1.0/math.pow(math.sqrt(dx*dx+dy*dy),1.0) # linear wgh=1.0/math.pow(math.sqrt(dx*dx+dy*dy),2.0) # quadratic # wgh=1.0/math.pow(math.sqrt(dx*dx+dy*dy),3.0) # cubic sumw+=wgh sumv+=(wgh*arz[i]) if flag==False: z=int(sumv/sumw) # z to RGB r = z % ir * jr g = z % ig * jg b = z % ib * jb image.putpixel((x, y), b * 65536 + g * 256 + r) image.save("rndSurface.png", "PNG")