[求助]：帮忙看看这段程序

flaid

//2个poly求交，结果错误
Acad::ErrorStatus polyjiao(AcDbObjectId polylineId1,AcDbObjectId polylineId2,AcDbObjectId& polylineId)
{
AcDbObjectId e0Id,e1Id;
AcGeCurve2d *Gpln0;
AcGeCurve2d *Gpln1;
AcGeInterval Ginv0,Ginv1,Ginv2;
//=============================
//选择两条多义线
AcDbPolyline *pent;
                        acdbOpenObject(pent,polylineId1,AcDb::kForWrite);
                        convertPolylineToGeCurve(pent,Gpln0);
                        pent->close();
AcDbPolyline *pent2;
                        acdbOpenObject(pent2,polylineId2,AcDb::kForWrite);

                        convertPolylineToGeCurve(pent2,Gpln1);
                        pent2->close();
Gpln0->getInterval(Ginv0);
double bv0,bv1;
Ginv0.getBounds(bv0,bv1);
ads_printf("\n00:bv0=%f,bv1=%f",bv0,bv1);
Gpln1->getInterval(Ginv1);
Ginv1.getBounds(bv0,bv1);
ads_printf("\n01:bv0=%f,bv1=%f",bv0,bv1);
if(Ginv1.intersectWith(Ginv0,Ginv2)==Adesk::kTrue)
{
        ads_printf("\nkTrue");
}

Ginv0.getBounds(bv0,bv1);
ads_printf("\n0:bv0=%f,bv1=%f",bv0,bv1);
Ginv1.getBounds(bv0,bv1);
ads_printf("\n1:bv0=%f,bv1=%f",bv0,bv1);
Ginv2.getBounds(bv0,bv1);
ads_printf("\n2:bv0=%f,bv1=%f",bv0,bv1);
double approxEps=0.001;
AcGePoint2dArray pntArr;
AcGeDoubleArray paramArr;
AcGeDoubleArray *ptayy=new AcGeDoubleArray();
Gpln0->getSamplePoints(bv0,bv1,approxEps,pntArr,paramArr);
ptayy->append(paramArr);
AcGePoint3dArray ptArr;
AcDbObjectId textBoundaryId;
AcGePoint2dArraytoAcGePoint3dArray(pntArr,ptArr);
DrawPolyline(textBoundaryId,ptArr,1,0,TRUE,"0","CONTINUOUS");
return Acad::eOk;
}