Face的拓扑信息

Dump of 7 TShapes-----------------Flags : Free, Modified, Checked, Orientable, Closed, Infinite, Convex, LockedTShape # 1 : FACE      11010000 00000171D02146E0    +2NaturalRestriction    Tolerance : 1e-07    - Surface : 1TShape # 2 : WIRE      01011000 00000171C94249D0    -5 +4 +5 -3TShape # 3 : EDGE      01010000 00000171C9B70160    +6 -6    Tolerance : 1e-07     same parametrisation of curves     same range on curves     degenerated    - PCurve : 4 on surface 1, range : 0 6.28318530717959  UV Points : 0, 1.5707963267949 6.28318530717959, 1.5707963267949TShape # 4 : EDGE      01010000 00000171C9B70960    +7 -7    Tolerance : 1e-07     same parametrisation of curves     same range on curves     degenerated    - PCurve : 3 on surface 1, range : 0 6.28318530717959  UV Points : 0, -1.5707963267949 6.28318530717959, -1.5707963267949TShape # 5 : EDGE      01010000 00000171C9B70DE0    +7 -6    Tolerance : 1e-07     same parametrisation of curves     same range on curves    - Curve 3D : 1, range : -1.5707963267949 1.5707963267949    - PCurve : 1, 2 (C0) on surface 1, range : -1.5707963267949 1.5707963267949  UV Points : 6.28318530717959, -1.5707963267949 6.28318530717959, 1.5707963267949  UV Points : 0, -1.5707963267949 0, 1.5707963267949TShape # 6 : VERTEX    01011010 00000171D02F1900    Tolerance : 1e-07    - Point 3D : 1.22464679914735e-15, 0, 20TShape # 7 : VERTEX    01011010 00000171D02F2290    Tolerance : 1e-07    - Point 3D : 1.22464679914735e-15, 0, -20 -------Dump of 4 Curve2ds -------   1 : Line  Origin :6.28318530717959, 0  Axis   :0, 1   2 : Line  Origin :0, 0  Axis   :0, 1   3 : Line  Origin :0, -1.5707963267949  Axis   :1, 0   4 : Line  Origin :0, 1.5707963267949  Axis   :1, 0 -------Dump of 1 Curves -------   1 : Trimmed curveParameters : 4.71238898038469 7.85398163397448Basis curve :Circle  Center :0, 0, 0  Axis   :0, -1, 0  XAxis  :1, 0, 0  YAxis  :-0, 0, 1  Radius :20 -------Dump of 0 Polygon3Ds ------- -------Dump of 0 PolygonOnTriangulations ------- -------Dump of 1 surfaces -------   1 : SphericalSurface  Center :0, 0, 0  Axis   :0, 0, 1  XAxis  :1, 0, -0  YAxis  :-0, 1, 0  Radius :20 -------Dump of 0 Triangulations ------- ------- Dump of 0 Locations -------

//读入igs文件，  IGESControl_Reader reader;//  TopExp_Explorer aWireExp(face, TopAbs_WIRE);  for (aWireExp; aWireExp.More(); aWireExp.Next()) {      //将wire存入容器  }//找到外界  GProp_GProps areaPro1;  TopoDS_Face proFace1 = BRepBuilderAPI_MakeFace(w);  BRepGProp::SurfaceProperties(proFace1, areaPro1);  Standard_Real area1 = areaPro1.Mass();//得到面积，面积最大者是外边界//获取每条Wire对应Edge的PCurve  TopExp_Explore wireE(wire,TopAbs_Edge);  Handle(Geom2d_Curve) aPCurve = BRep_Tool::CurveOnSurface(aTempEdge, face, aPFirst, aPLast);//形成平面//布尔操作  BRepAlgoAPI_Cut cut(face2d, aNewHoleFace);

ShapeAnalysis_Wire aCheckWire(aNewWire, aNewFace, aPrecision);    // create a tool and load objects into it    if (aCheckWire.CheckOrder())    {      std::cout << "Some edges in the wire need to be reordered\n"        << "Please ensure that all the edges are correctly ordered before further analysis\n";      //修复          Standard_Real aPrecision = 1e-04;ShapeFix_Wire aFixWire(theWire, aNewFace, aPrecision);           aFixWire.FixReorder();           TopoDS_Wire aNewWire = aFixWire.Wire();          }    if (aCheckWire.CheckSmall(aPrecision))    {      std::cout << "Wire contains edge(s) shorter than " << aPrecision << std::endl;    }    if (aCheckWire.CheckConnected())    {      std::cout << "Wire is disconnected\n";    }    if (aCheckWire.CheckSelfIntersection())    {      std::cout << "Wire has self-intersecting or intersecting adjacent edges\n";    }