ARX 查找多段线上的下一点

admin

1. static void GetNextPt(const AcDbPolyline* plMin,const bool& gotonext,const int& plIndex,AcGePoint2d& ptNextS,AcGePoint2d& ptNextE)
2. {
3. int nextIndex = 0;
4. int count = plMin->numVerts();
5. if(!gotonext)
6. {
7. if(plIndex > 0)
8. {
9. nextIndex = plIndex - 1;
10. }
11. else
12. {
13. nextIndex = count - 1;
14. }
15. }
16. else
17. {
18. if(plIndex < count - 1)
19. {
20. nextIndex = plIndex + 1;
21. }
22. else
23. {
24. nextIndex = 0;
25. }
26. }
29. AcDbPolyline::SegType nextType = plMin->segType(nextIndex);
32. if(nextType == AcDbPolyline::SegType::kArc)
33. {
34. AcGeCircArc2d arc2d;
35. plMin->getArcSegAt(nextIndex,arc2d);
36. ptNextS = arc2d.startPoint();
37. ptNextE = arc2d.endPoint();
38. }
39. else
40. {
41. AcGeLineSeg2d line2d;
42. plMin->getLineSegAt(nextIndex,line2d);
43. ptNextS = line2d.startPoint();
44. ptNextE = line2d.endPoint();
45. }
48. }

复制代码