src/GeomAPI/GeomAPI_Lin2d.cpp

   1 // File:        GeomAPI_Lin2d.cpp
   2 // Created:     29 May 2014
   3 // Author:      Artem ZHIDKOV
   4
   5 #include <GeomAPI_Lin2d.h>
   6 #include <GeomAPI_Pnt2d.h>
   7
   8 #include <gp_Dir2d.hxx>
   9 #include <gp_Lin2d.hxx>
  10 #include <gp_Pnt2d.hxx>
  11 #include <gp_XY.hxx>
  12
  13 #include <IntAna2d_AnaIntersection.hxx>
  14
  15 #define MY_LIN2D static_cast<gp_Lin2d*>(myImpl)
  16
  17 static gp_Lin2d* newLine2d(const double theStartX, const double theStartY,
  18                            const double theEndX,   const double theEndY)
  19 {
  20   gp_XY aDir(theEndX - theStartX, theEndY - theStartY);
  21   gp_Pnt2d aStart(theStartX, theStartY);
  22   return new gp_Lin2d(aStart, gp_Dir2d(aDir));
  23 }
  24
  25
  26 GeomAPI_Lin2d::GeomAPI_Lin2d(const double theStartX, const double theStartY,
  27                              const double theEndX,   const double theEndY)
  28   : GeomAPI_Interface(newLine2d(theStartX, theStartY, theEndX, theEndY))
  29 {}
  30
  31 GeomAPI_Lin2d::GeomAPI_Lin2d(const boost::shared_ptr<GeomAPI_Pnt2d>& theStart,
  32                          const boost::shared_ptr<GeomAPI_Pnt2d>& theEnd)
  33   : GeomAPI_Interface(newLine2d(theStart->x(), theStart->y(),
  34                                 theEnd->x(),   theEnd->y()))
  35 {}
  36
  37 double GeomAPI_Lin2d::distance(const boost::shared_ptr<GeomAPI_Pnt2d>& theOther) const
  38 {
  39   return MY_LIN2D->Distance(theOther->impl<gp_Pnt2d>());
  40 }
  41
  42 const boost::shared_ptr<GeomAPI_Pnt2d> GeomAPI_Lin2d::intersect(
  43                 const boost::shared_ptr<GeomAPI_Lin2d>& theLine) const
  44 {
  45   IntAna2d_AnaIntersection anInter(*MY_LIN2D, theLine->impl<gp_Lin2d>());
  46   if (!anInter.IsDone() || anInter.IsEmpty())
  47     return boost::shared_ptr<GeomAPI_Pnt2d>();
  48   const gp_Pnt2d& aResult = anInter.Point(0).Value();
  49   return boost::shared_ptr<GeomAPI_Pnt2d>(new GeomAPI_Pnt2d(aResult.X(), aResult.Y()));
  50 }
  51
  52 const boost::shared_ptr<GeomAPI_Pnt2d> GeomAPI_Lin2d::project(const boost::shared_ptr<GeomAPI_Pnt2d>& thePoint) const
  53 {
  54   const gp_XY& aDir = MY_LIN2D->Direction().XY();
  55   const gp_XY& aLoc = MY_LIN2D->Location().XY();
  56   const gp_XY& aPnt = thePoint->impl<gp_Pnt2d>().XY();
  57   double aParam = aDir.Dot(aPnt - aLoc);
  58
  59   gp_XY aResult = aPnt + aDir * aParam;
  60   return boost::shared_ptr<GeomAPI_Pnt2d>(new GeomAPI_Pnt2d(aResult.X(), aResult.Y()));
  61 }
  62