src/GeomAPI/GeomAPI_Circ2d.cpp

   1 // File:        GeomAPI_Circ2d.cpp
   2 // Created:     29 May 2014
   3 // Author:      Artem ZHIDKOV
   4
   5 #include <GeomAPI_Circ2d.h>
   6 #include <GeomAPI_Pnt2d.h>
   7
   8 #include <gp_Dir2d.hxx>
   9 #include <gp_Circ2d.hxx>
  10 #include <gp_Pnt2d.hxx>
  11 #include <gp_Ax2d.hxx>
  12 #include <Geom2d_Circle.hxx>
  13 #include <Geom2dAPI_ProjectPointOnCurve.hxx>
  14 #include <Precision.hxx>
  15
  16 #include <IntAna2d_AnaIntersection.hxx>
  17
  18 #define MY_CIRC2D static_cast<gp_Circ2d*>(myImpl)
  19
  20 static gp_Circ2d* newCirc2d(const double theCenterX, const double theCenterY,
  21                             const double thePointX,   const double thePointY)
  22 {
  23   gp_Pnt2d aCenter(theCenterX, theCenterY);
  24   gp_Pnt2d aPoint(thePointX, thePointY);
  25
  26   double aRadius = aCenter.Distance(aPoint);
  27
  28   if (aCenter.IsEqual(aPoint, Precision::Confusion()))
  29       return NULL;
  30
  31   gp_Dir2d aDir(theCenterX - thePointX, theCenterY - thePointY);
  32   return new gp_Circ2d(gp_Ax2d(aCenter, aDir), aRadius);
  33 }
  34
  35
  36 GeomAPI_Circ2d::GeomAPI_Circ2d(const boost::shared_ptr<GeomAPI_Pnt2d>& theCenter,
  37                                const boost::shared_ptr<GeomAPI_Pnt2d>& theCirclePoint)
  38   : GeomAPI_Interface(newCirc2d(theCenter->x(), theCenter->y(),
  39                                 theCirclePoint->x(),   theCirclePoint->y()))
  40 {}
  41
  42 const boost::shared_ptr<GeomAPI_Pnt2d> GeomAPI_Circ2d::project(const boost::shared_ptr<GeomAPI_Pnt2d>& thePoint) const
  43 {
  44   boost::shared_ptr<GeomAPI_Pnt2d> aResult;
  45   if (!MY_CIRC2D)
  46     return aResult;
  47
  48   Handle(Geom2d_Circle) aCircle = new Geom2d_Circle(MY_CIRC2D->Axis(), MY_CIRC2D->Radius());//(aCirc);
  49
  50   const gp_Pnt2d& aPoint = thePoint->impl<gp_Pnt2d>();
  51
  52   Geom2dAPI_ProjectPointOnCurve aProj(aPoint, aCircle);
  53   Standard_Integer aNbPoint = aProj.NbPoints();
  54   double aX, anY;
  55   if (aNbPoint > 0) {
  56     double aMinDistance = 0, aDistance;
  57     for (Standard_Integer j = 1; j <= aNbPoint; j++) {
  58       gp_Pnt2d aNewPoint = aProj.Point(j);
  59       aDistance = aNewPoint.Distance(aPoint);
  60       if (!aMinDistance || aDistance < aMinDistance) {
  61         aX = aNewPoint.X();
  62         anY = aNewPoint.Y();
  63         aMinDistance = aDistance;
  64         aResult = boost::shared_ptr<GeomAPI_Pnt2d>(new GeomAPI_Pnt2d(aX, anY));
  65       }
  66     }
  67   }
  68   return aResult;
  69 }
  70