1 // Copyright (C) 2014-20xx CEA/DEN, EDF R&D
3 // File: GeomAPI_Lin.cpp
4 // Created: 29 May 2014
5 // Author: Artem ZHIDKOV
7 #include <GeomAPI_Lin.h>
8 #include <GeomAPI_Pnt.h>
12 #include <gp_Lin2d.hxx>
18 #include <IntAna2d_AnaIntersection.hxx>
19 #include <Precision.hxx>
20 #include <ProjLib.hxx>
22 #define MY_LIN static_cast<gp_Lin*>(myImpl)
24 static gp_Lin* newLine(const double theStartX, const double theStartY, const double theStartZ,
25 const double theEndX, const double theEndY, const double theEndZ)
27 gp_XYZ aDir(theEndX - theStartX, theEndY - theStartY, theEndZ - theStartZ);
28 gp_Pnt aStart(theStartX, theStartY, theStartZ);
29 return new gp_Lin(aStart, gp_Dir(aDir));
32 GeomAPI_Lin::GeomAPI_Lin(const double theStartX, const double theStartY, const double theStartZ,
33 const double theEndX, const double theEndY, const double theEndZ)
34 : GeomAPI_Interface(newLine(theStartX, theStartY, theStartZ, theEndX, theEndY, theEndZ))
38 GeomAPI_Lin::GeomAPI_Lin(const std::shared_ptr<GeomAPI_Pnt>& theStart,
39 const std::shared_ptr<GeomAPI_Pnt>& theEnd)
41 newLine(theStart->x(), theStart->y(), theStart->z(), theEnd->x(), theEnd->y(), theEnd->z()))
45 double GeomAPI_Lin::distance(const std::shared_ptr<GeomAPI_Pnt>& thePoint) const
47 return MY_LIN->Distance(thePoint->impl<gp_Pnt>());
50 const std::shared_ptr<GeomAPI_Pnt> GeomAPI_Lin::intersect(
51 const std::shared_ptr<GeomAPI_Lin>& theLine) const
53 if (MY_LIN->SquareDistance(theLine->impl<gp_Lin>()) > Precision::Confusion())
54 return std::shared_ptr<GeomAPI_Pnt>();
56 const gp_Dir& aDir1 = MY_LIN->Direction();
57 const gp_Dir& aDir2 = theLine->impl<gp_Lin>().Direction();
58 gp_Dir aCross = aDir1.Crossed(aDir2);
59 gp_Pln aPlane(MY_LIN->Location(), aCross); // plane containing both lines
61 gp_Lin2d aPrjLine1 = ProjLib::Project(aPlane, *MY_LIN);
62 gp_Lin2d aPrjLine2 = ProjLib::Project(aPlane, theLine->impl<gp_Lin>());
64 IntAna2d_AnaIntersection anInter(aPrjLine1, aPrjLine1);
65 if (!anInter.IsDone() || anInter.IsEmpty())
66 return std::shared_ptr<GeomAPI_Pnt>();
67 const gp_Pnt2d& anIntPnt2d = anInter.Point(0).Value();
68 gp_Pnt aResult = ElSLib::Value(anIntPnt2d.X(), anIntPnt2d.Y(), aPlane);
70 return std::shared_ptr<GeomAPI_Pnt>(
71 new GeomAPI_Pnt(aResult.X(), aResult.Y(), aResult.Z()));
74 const std::shared_ptr<GeomAPI_Pnt> GeomAPI_Lin::project(
75 const std::shared_ptr<GeomAPI_Pnt>& thePoint) const
77 const gp_XYZ& aDir = MY_LIN->Direction().XYZ();
78 const gp_XYZ& aLoc = MY_LIN->Location().XYZ();
79 const gp_XYZ& aPnt = thePoint->impl<gp_Pnt>().XYZ();
80 double aParam = aDir.Dot(aPnt - aLoc);
82 gp_XYZ aResult = aPnt + aDir * aParam;
83 return std::shared_ptr<GeomAPI_Pnt>(new GeomAPI_Pnt(aResult.X(), aResult.Y(), aResult.Z()));