合并各种情况的圆弧

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1. static void zffObjectARX_MyCommand18(void)
   
2. {
   
3. ads_name ss;
   
4. acedSSGet(NULL,NULL,NULL,NULL,ss);
   
5. long len;
   
6. acedSSLength(ss,&len);
   
7. double startAng,endAng;
   
8. double radius;
   
9. AcGePoint3d center;
   
10. 
    
11. for (int i=0;i<len;)
    
12. {
    
13. AcDbArc* pArc=NULL;
    
14. AcDbObjectId entId;
    
15. ads_name name,name1;
    
16. acedSSName(ss,i,name);
    
17. acdbGetObjectId(entId,name);
    
18. acdbOpenObject(pArc,entId,AcDb::kForWrite);
    
19. double arcStartAng=pArc->startAngle();
    
20. double arcEndAng=pArc->endAngle();
    
21. if (arcEndAng==0)
    
22. {
    
23. arcEndAng+=2*pi();
    
24. }
    
25. AcGePoint3d arcCenter=pArc->center();
    
26. double arcRadius=pArc->radius();
    
27. radius=arcRadius;
    
28. center=arcCenter;
    
29. startAng=arcStartAng;
    
30. endAng=arcEndAng;
    
31. 
    
32. for (int j=i+1;j<len;)
    
33. {
    
34. AcDbArc* pArc1=NULL;
    
35. acedSSName(ss,j,name1);
    
36. acdbGetObjectId(entId,name1);
    
37. acdbOpenObject(pArc1,entId,AcDb::kForWrite);
    
38. double arc1StartAng=pArc1->startAngle();
    
39. double arc1EndAng=pArc1->endAngle();
    
40. if (arc1EndAng==0)
    
41. {
    
42. arc1EndAng+=2*pi();
    
43. }
    
44. AcGePoint3d arc1Center=pArc1->center();
    
45. double arc1Radius=pArc1->radius();
    
46. if (arcCenter==arc1Center && arcRadius==arc1Radius)
    
47. {
    
48. if (arc1StartAng<startAng)
    
49. {
    
50. startAng=arc1StartAng;
    
51. }
    
52. if (arc1EndAng>endAng)
    
53. {
    
54. endAng=arc1EndAng;
    
55. }
    
56. acedSSDel(name1,ss);
    
57. pArc1->erase();
    
58. acedSSLength(ss,&len);
    
59. }
    
60. else
    
61. {
    
62. j++;
    
63. }
    
64. pArc1->close();
    
65. }
    
66. acedSSDel(name,ss);
    
67. pArc->erase();
    
68. pArc->close();
    
69. acedSSLength(ss,&len);
    
70. AcDbArc* pArcRe=new AcDbArc(center,radius,startAng,endAng);
    
71. AddToModelSpace(pArcRe);
    
72. }
    
73. }

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