直纹曲面是一类特殊的曲面,在几何学和微分几何中都有研究。它的主要特性是,曲面上的每一点都有至少一条直线经过。换句话说,直纹曲面可以由一条直线通过连续运动构成。在三维欧几里德空间中,最常见的直纹曲面是平面、柱面和锥面,著名的莫比乌斯环也是直纹曲面。
直纹曲面在几何学和微分几何中有许多重要的应用和研究。由于它们具有很好的性质,因此在微分几何曲面论中占据十分重要的地位。对直纹曲面性质的研究已经取得了很多理想且有价值的成果。例如,活动标架法与外微分法相结合是研究微分几何学的有力工具,也被广泛应用于直纹曲面的研究中。
#include <TColgp_HArray1OfPnt.hxx>
#include <gp_Pnt.hxx>
#include <GeomAPI_Interpolate.hxx>
#include <BRepBuilderAPI_MakeWire.hxx>
#include <GeomFill.hxx>
#include <BRepBuilderAPI_MakeEdge.hxx>
#include"Viewer.h"
#include <BRepBuilderAPI_MakeFace.hxx>
int main(int argc, char* argv[])
{//生成第一个曲线TColgp_HArray1OfPnt Linearray1 = TColgp_HArray1OfPnt(1, 5);Linearray1.SetValue(1, gp_Pnt(5, 0, 0));Linearray1.SetValue(2, gp_Pnt(4, 1.5, 0));Linearray1.SetValue(3, gp_Pnt(3, 2, 0));Linearray1.SetValue(4, gp_Pnt(2, 3, 0));Linearray1.SetValue(5, gp_Pnt(0, 4.5, 0));GeomAPI_Interpolate bspline_11 = GeomAPI_Interpolate(&Linearray1, Standard_False, 0.00001);bspline_11.Perform();Handle(Geom_BSplineCurve) bspline_21 = bspline_11.Curve();TopoDS_Edge bspline_31 = BRepBuilderAPI_MakeEdge(bspline_21);TopoDS_Shape bspline1 = BRepBuilderAPI_MakeWire(bspline_31);//生成第二个曲线TColgp_HArray1OfPnt Linearray2 = TColgp_HArray1OfPnt(1, 5);Linearray2.SetValue(1, gp_Pnt(8, 0, 5));Linearray2.SetValue(2, gp_Pnt(7, 1.7, 5));Linearray2.SetValue(3, gp_Pnt(6, 2.4, 5));Linearray2.SetValue(4, gp_Pnt(3, 3.2, 5));Linearray2.SetValue(5, gp_Pnt(1, 5, 5));GeomAPI_Interpolate bspline_12 = GeomAPI_Interpolate(&Linearray2, Standard_False, 0.00001);bspline_12.Perform();Handle(Geom_BSplineCurve) bspline_22 = bspline_12.Curve();TopoDS_Edge bspline_32 = BRepBuilderAPI_MakeEdge(bspline_22);TopoDS_Shape bspline2 = BRepBuilderAPI_MakeWire(bspline_32);//二个曲线生成曲面Handle(Geom_Surface) surface = GeomFill::Surface(bspline_21, bspline_22);TopoDS_Shape surf=BRepBuilderAPI_MakeFace(surface,0.001);Viewer vout(50, 50, 500, 500);vout << bspline1;vout << bspline2;vout << surf;vout.StartMessageLoop();return 0;
}