在建立二维点阵的基础上，增添Attractor干扰点，进而绘制渐变圆。

import rhinoscriptsyntax as rs
import math

pts=[]
for i in range(15):
    for j in range(15):
        x=i*10
        y=j*10
        z=0
        pts.append((x,y,z))
        
attractor=rs.GetPoint('select a point')
for i in range(len(pts)):
    distance =rs.Distance(attractor,pts[i])
    rs.AddCircle(pts[i],distance/40)