Arx 多义线(AcDbPolyline)绘制实心圆

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Acad::ErrorStatus
addVertexAt(unsigned int index,
                        const AcGePoint2d& pt,
                        double bulge = 0.,
                        double startWidth = -1.,
                        double endWidth = -1);

index Input index (0 based) before which to insert the vertex
pt Input vertex location point
bulge Input bulge value for vertex // bulge = tan(1/4. * Angle)
startWidth Input start width for vertex
endWidth Input end width for vertex
//Sample
double dRadius = 1.;

double bulge = tan(1 / 4. * PI);

AcGePoint2d ptCenter(0,0);

AcDbPolyline * pLine=new AcDbPolyline;

AcGePoint2d sPt = ptCenter;

AcGePoint2d ePt = sPt;

sPt.x -= dRadius  / 2.;
pLine->addVertexAt(0,sPt,bulge ,dRadius ,dRadius );

ePt.x += dRadius   / 2.;
pLine->addVertexAt(1,ePt,bulge ,dRadius ,dRadius );

pLine->addVertexAt(2,sPt,bulge ,dRadius ,dRadius );