修改多段线的凸度

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1. static void zffObjectARX_MyCommand5(void)
   
2. {
   
3. ads_point pick;
   
4. ads_name name;
   
5. if (acedEntSel(NULL,name,pick)!=RTNORM)
   
6. {
   
7. return;
   
8. }
   
9. AcGePoint3d ptClosest;
   
10. AcDbObjectId polyId;
    
11. double param;
    
12. AcDbPolyline* pPoly=NULL;
    
13. acdbGetObjectId(polyId,name);
    
14. acdbOpenObject(pPoly,polyId,AcDb::kForWrite);
    
15. pPoly->getClosestPointTo(asPnt3d(pick),ptClosest);
    
16. pPoly->getParamAtPoint(ptClosest,param);
    
17. int vernum=int(param);
    
18. int vernumEnd=int(param+1);
    
19. AcGePoint3d ptS,ptE;
    
20. pPoly->getPointAt(vernum,ptS);
    
21. pPoly->getPointAt(vernumEnd,ptE);
    
22. pPoly->close();
    
23. AcGePoint2d ptCur;
    
24. 
    
25. 
    
26. int track=1,type;
    
27. struct resbuf result;
    
28. while (track>0)
    
29. {
    
30. acedGrRead(track,&type,&result);
    
31. ptCur.x=result.resval.rpoint[X];
    
32. ptCur.y=result.resval.rpoint[Y];
    
33. AcGeCircArc2d arc(CPointUtil::ToPoint2d(ptS),ptCur,CPointUtil::ToPoint2d(ptE));
    
34. AcGePoint2d ptCenter=arc.center();
    
35. AcGeVector2d verS(ptS.x-ptCenter.x,ptS.y-ptCenter.y);
    
36. double angleS=verS.angle();
    
37. AcGeVector2d verE(ptE.x-ptCenter.x,ptE.y-ptCenter.y);
    
38. double angleE=verE.angle();
    
39. double bulge=(angleE-angleS)/pi();
    
40. 
    
41. acdbOpenObject(pPoly,polyId,AcDb::kForWrite);
    
42. pPoly->setBulgeAt(vernum,bulge);
    
43. pPoly->close();
    
44. if (type==3)
    
45. {
    
46. track=0;
    
47. }
    
48. }
    
49. 
    
50. }

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