ObjectARX 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;
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;
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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