斐波那契数列相关问题

kio

原文参考
http://www.zhihu.com/question/24470349
http://jsfiddle.net/njed27nf/

kio

1. #coding=utf-8
   
2. import rhinoscriptsyntax as rs
   
3. from math import sqrt,pi,cos,sin
   
4. width = 70
   
5. height = 70
   
6. nbr_circles = 250
   
7. phi = (sqrt(5) + 1) / 2 - 1 # golden ratio
   
8. golden_angle = phi * 2 * pi # golden ngle
   
9. 
   
10. lg_rad = width * .45;
    
11. lg_area = lg_rad ** 2 * pi
    
12. 
    
13. sm_area = lg_area / nbr_circles  # Area of our little circles,if they filled the space entirely
    
14. sm_rad = sqrt(sm_area / pi)  # This is related to the equation area = pi r squared
    
15. fudge = 0.5  # Fudge factor, since our circles don't actually fill up space entirely.
    
16. adj_sm_diameter = sm_rad * 2 * fudge
    
17. cx = width / 2
    
18. cy = height / 2
    
19. 
    
20. 
    
21. for i in range(1,nbr_circles):
    
22.     angle = i * golden_angle
    
23.     cum_area = i * sm_area
    
24.     spiral_rad = sqrt(cum_area / pi)
    
25.     x = cx + cos(angle) * spiral_rad
    
26.     y = cy + sin(angle) * spiral_rad
    
27.     #print(x,y)
    
28. 
    
29. 
    
30.     #rs.AddCircle((x,y,0),1)
    
31.     rs.AddPoint(x,y,0)

复制代码

最终完成了.

像番茄加两个蛋

牛逼，我只知道输出不大于1000斐波那契数列，你居然还可以画出来！