opencascade对topo线进行遍历，获取所有的线转换为几何类型，并且存储为裁剪几何曲线

opencascade对topo线进行遍历，获取所有的线转换为几何类型，并且存储为裁剪几何曲线

 

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QVector<Handle_Geom_TrimmedCurve> explore_curve(TopoDS_Shape &contact_curve) {     //将topo线转换为Geom线     QVector<Handle_Geom_TrimmedCurve> store_trimmed_curve;     TopExp_Explorer ex_contact_curve;//存储遍历出的所有交线     for (ex_contact_curve.Init(contact_curve, TopAbs_EDGE); ex_contact_curve.More(); ex_contact_curve.Next())     {         TopoDS_Edge topo_contact_part_Edge = TopoDS::Edge(ex_contact_curve.Current());          //拓扑转换为几何曲线         Standard_Real first, last;         Handle(Geom_Curve)geom_contact_part_curve = BRep_Tool::Curve(topo_contact_part_Edge, first, last);         //几何曲线转换为裁剪曲线，然后参与计算，不然会出错         Handle(Geom_TrimmedCurve)geom_contact_trimmed_curve = new Geom_TrimmedCurve(geom_contact_part_curve, first, last);         store_trimmed_curve.push_back(geom_contact_trimmed_curve);     }     return store_trimmed_curve; }