三种曲线的画法,LISP语言

MVH

1. ;画正弦曲：x=a , y=sin a ;
   
2. 
   
3. (defun c:zxqx(/ da bp Ai lpt bp1 bp2)
   
4. 
   
5. (initget 1)
   
6. 
   
7. (setq bp (getpoint "\n 起始点?:"))
   
8. 
   
9. (initget 7)
   
10. 
    
11. (setq da (getangle "\n 角度增量?:"))
    
12. 
    
13. (setq Ai 0 Ae (* pi 2.0) bp1 (car bp) bp2 (car (cdr bp)))
    
14. 
    
15. (while (< Ai Ae)
    
16. 
    
17. (setq lpt (append lpt (list (list (+ bp1 Ai) (+ bp2 (sin Ai))))))
    
18. 
    
19. (setq Ai (+ Ai da))
    
20. 
    
21. )
    
22. 
    
23. (setq lpt (append lpt (list (list (+ bp1 Ae) (+ bp2 (sin Ae))))))
    
24. 
    
25. (setvar "cmdecho" 0)
    
26. 
    
27. (command "pline")
    
28. 
    
29. (foreach pt lpt (command pt))
    
30. 
    
31. (command ^c)
    
32. 
    
33. (command "pedit" "l" "f")
    
34. 
    
35. (command ^c)
    
36. 
    
37. (setvar "cmdecho" 1)
    
38. 
    
39. )

复制代码

MVH

1. ;渐开线画法x=br*(cos(a)+a*sin(a))
   
2. 
   
3. y=br*(sin(a)-a*cos(a));
   
4. 
   
5. (defun c:jkx(/ ti lpt ae pt bp1 bp2)
   
6. 
   
7. (initget 1)
   
8. 
   
9. (setq bp (getpoint "\n 起始点?:"))
   
10. 
    
11. (initget 7)
    
12. 
    
13. (setq br (getreal "\n 基圆半径?:"))
    
14. 
    
15. (initget 5)
    
16. 
    
17. (setq ai (getangle "\n 起始角度?:"))
    
18. 
    
19. (initget 7)
    
20. 
    
21. (setq ae (getangle "\n 终止角度?:"))
    
22. 
    
23. (initget 7)
    
24. 
    
25. (setq da (getangle "\n 角度增量?:"))
    
26. 
    
27. (setq bp1 (car bp) bp2 (car (cdr bp)))
    
28. 
    
29. (while (< ai ae)
    
30. 
    
31. (setq lpt (append lpt (list (list (+ bp1 (* br (+ (cos ai) (* ai (sin ai))))) (+ bp2 (* br (- (sin ai) (* ai (cos ai)))))))))
    
32. 
    
33. (setq ai (+ ai da))
    
34. 
    
35. )
    
36. 
    
37. (setq lpt (append lpt (list (list (+ bp1 (* br (+ (cos ae) (* ae (sin ae))))) (+ bp2 (* br (- (sin ae) (* ae (cos ae)))))))))
    
38. 
    
39. (setvar "cmdecho" 0)
    
40. 
    
41. (command "pline")
    
42. 
    
43. (foreach pt lpt (command pt))
    
44. 
    
45. (command ^c)
    
46. 
    
47. (command "pedit" "l" "f")
    
48. 
    
49. (command ^c)
    
50. 
    
51. (setvar "cmdecho" 1)
    
52. 
    
53. )

复制代码

MVH

螺旋线画法：x=r*cos(2pi/k) , y=r*sin(2pi/k) , z=(+/-)s/k .

1. ; s:导程（+=右旋，-=左旋），k：每圈等分数。
   
2. 
   
3. (defun c:yzlxx(/ bp r a s k n bp1 bp2 bp3 dmax di da pt lpt)
   
4. 
   
5. (initget 1)
   
6. 
   
7. (setq bp (getpoint "\n 螺旋线中心："))
   
8. 
   
9. (initget 7)
   
10. 
    
11. (setq r (getdist bp "\n 螺旋线半径："))
    
12. 
    
13. (initget 3)
    
14. 
    
15. (setq s (getreal "\n 导程：(+/右旋,-/左旋)"))
    
16. 
    
17. (initget 7)
    
18. 
    
19. (setq n (getreal "\n 圈数："))
    
20. 
    
21. (initget 6)
    
22. 
    
23. (setq k (getint "\n 每圈等分数<36>：(宜取36的整倍数)"))
    
24. 
    
25. (if (not k) (setq k 36))
    
26. 
    
27. (setq bp1 (car bp) bp2 (cadr bp) bp3 (caddr bp))
    
28. 
    
29. (setq dmax (fix(* k n)))
    
30. 
    
31. (setq da (/(* 2 pi) k))
    
32. 
    
33. (setq a 0)
    
34. 
    
35. (setq di 0)
    
36. 
    
37. (while (<= di dmax)
    
38. 
    
39. (setq lpt (append lpt (list (list (+ bp1 (* r (cos a))) (+ bp2 (* r (sin a))) (+ bp3 (* (/ s k) di))))))
    
40. 
    
41. (setq di (+ di 1))
    
42. 
    
43. (setq a (+ da a))
    
44. 
    
45. )
    
46. 
    
47. (setvar "cmdecho" 0)
    
48. 
    
49. (command "3dpoly")
    
50. 
    
51. (foreach pt lpt (command pt))
    
52. 
    
53. (command ^c)
    
54. 
    
55. (setvar "cmdecho" 1)
    
56. 
    
57. )

复制代码

apple_k

楼主～您这贴确实值得顶一下～

hswx1230

好东西!!

hunter_009

请教楼主一个问题，如何将一张图中所有直线的端点坐标导出到EXCEL中呢