+// Copyright (C) 2014-20xx CEA/DEN, EDF R&D
+
// File: GeomAPI_Circ2d.cpp
// Created: 29 May 2014
// Author: Artem ZHIDKOV
#include <gp_Circ2d.hxx>
#include <gp_Pnt2d.hxx>
#include <gp_Ax2d.hxx>
+#include <GeomLib_Tool.hxx>
#include <Geom2d_Circle.hxx>
#include <Geom2dAPI_ProjectPointOnCurve.hxx>
#include <Precision.hxx>
#include <IntAna2d_AnaIntersection.hxx>
-#define MY_CIRC2D static_cast<gp_Circ2d*>(myImpl)
+#define MY_CIRC2D implPtr<gp_Circ2d>()
static gp_Circ2d* newCirc2d(const double theCenterX, const double theCenterY, const gp_Dir2d theDir,
const double theRadius)
if (aCenter.IsEqual(aPoint, Precision::Confusion()))
return NULL;
- gp_Dir2d aDir(theCenterX - thePointX, theCenterY - thePointY);
+ gp_Dir2d aDir(thePointX - theCenterX, thePointY - theCenterY);
return newCirc2d(theCenterX, theCenterY, aDir, aRadius);
}
-GeomAPI_Circ2d::GeomAPI_Circ2d(const boost::shared_ptr<GeomAPI_Pnt2d>& theCenter,
- const boost::shared_ptr<GeomAPI_Pnt2d>& theCirclePoint)
+static gp_Circ2d* newCirc2d(const std::shared_ptr<GeomAPI_Pnt2d>& theFirstPoint,
+ const std::shared_ptr<GeomAPI_Pnt2d>& theSecondPoint,
+ const std::shared_ptr<GeomAPI_Pnt2d>& theThirdPoint)
+{
+ gp_XY aFirstPnt(theFirstPoint->x(), theFirstPoint->y());
+ gp_XY aSecondPnt(theSecondPoint->x(), theSecondPoint->y());
+ gp_XY aThirdPnt(theThirdPoint->x(), theThirdPoint->y());
+
+ gp_XY aVec12 = aSecondPnt - aFirstPnt;
+ gp_XY aVec23 = aThirdPnt - aSecondPnt;
+ gp_XY aVec31 = aFirstPnt - aThirdPnt;
+
+ // coefficients to calculate center
+ double aCoeff1, aCoeff2, aCoeff3;
+
+ // square of parallelogram
+ double aSquare2 = aVec12.Crossed(aVec23);
+ aSquare2 *= aSquare2 * 2.0;
+ if (aSquare2 < 1.e-20) {
+ // if two points are equal, build a circle on two different points as on diameter
+ double aSqLen12 = aVec12.SquareModulus();
+ double aSqLen23 = aVec23.SquareModulus();
+ double aSqLen31 = aVec31.SquareModulus();
+ if (aSqLen12 < Precision::SquareConfusion() &&
+ aSqLen23 < Precision::SquareConfusion() &&
+ aSqLen31 < Precision::SquareConfusion())
+ return NULL;
+ aCoeff1 = aCoeff2 = aCoeff3 = 1.0 / 3.0;
+ }
+ else {
+ aCoeff1 = aVec23.Dot(aVec23) / aSquare2 * aVec12.Dot(aVec31.Reversed());
+ aCoeff2 = aVec31.Dot(aVec31) / aSquare2 * aVec23.Dot(aVec12.Reversed());
+ aCoeff3 = aVec12.Dot(aVec12) / aSquare2 * aVec31.Dot(aVec23.Reversed());
+ }
+ // center
+ gp_XY aCenter = aFirstPnt * aCoeff1 + aSecondPnt * aCoeff2 + aThirdPnt * aCoeff3;
+ // radius
+ double aRadius = (aFirstPnt - aCenter).Modulus();
+
+ gp_Dir2d aDir(aFirstPnt - aCenter);
+ return newCirc2d(aCenter.X(), aCenter.Y(), aDir, aRadius);
+}
+
+GeomAPI_Circ2d::GeomAPI_Circ2d(const std::shared_ptr<GeomAPI_Pnt2d>& theCenter,
+ const std::shared_ptr<GeomAPI_Pnt2d>& theCirclePoint)
: GeomAPI_Interface(
newCirc2d(theCenter->x(), theCenter->y(), theCirclePoint->x(), theCirclePoint->y()))
{
}
-GeomAPI_Circ2d::GeomAPI_Circ2d(const boost::shared_ptr<GeomAPI_Pnt2d>& theCenter,
- const boost::shared_ptr<GeomAPI_Dir2d>& theDir, double theRadius)
+GeomAPI_Circ2d::GeomAPI_Circ2d(const std::shared_ptr<GeomAPI_Pnt2d>& theCenter,
+ const std::shared_ptr<GeomAPI_Dir2d>& theDir, double theRadius)
: GeomAPI_Interface(
newCirc2d(theCenter->x(), theCenter->y(), theDir->impl<gp_Dir2d>(), theRadius))
{
+}
+GeomAPI_Circ2d::GeomAPI_Circ2d(const std::shared_ptr<GeomAPI_Pnt2d>& theFirstPoint,
+ const std::shared_ptr<GeomAPI_Pnt2d>& theSecondPoint,
+ const std::shared_ptr<GeomAPI_Pnt2d>& theThirdPoint)
+ : GeomAPI_Interface(newCirc2d(theFirstPoint, theSecondPoint, theThirdPoint))
+{
}
-const boost::shared_ptr<GeomAPI_Pnt2d> GeomAPI_Circ2d::project(
- const boost::shared_ptr<GeomAPI_Pnt2d>& thePoint) const
+const std::shared_ptr<GeomAPI_Pnt2d> GeomAPI_Circ2d::project(
+ const std::shared_ptr<GeomAPI_Pnt2d>& thePoint) const
{
- boost::shared_ptr<GeomAPI_Pnt2d> aResult;
+ std::shared_ptr<GeomAPI_Pnt2d> aResult;
if (!MY_CIRC2D)
- return aResult;
-
- Handle(Geom2d_Circle) aCircle = new Geom2d_Circle(MY_CIRC2D->Axis(), MY_CIRC2D->Radius()); //(aCirc);
+ return aResult;
+ const gp_Pnt2d& aCenter = MY_CIRC2D->Location();
const gp_Pnt2d& aPoint = thePoint->impl<gp_Pnt2d>();
- Geom2dAPI_ProjectPointOnCurve aProj(aPoint, aCircle);
- Standard_Integer aNbPoint = aProj.NbPoints();
- double aX, anY;
- if (aNbPoint > 0) {
- double aMinDistance = 0, aDistance;
- for (Standard_Integer j = 1; j <= aNbPoint; j++) {
- gp_Pnt2d aNewPoint = aProj.Point(j);
- aDistance = aNewPoint.Distance(aPoint);
- if (!aMinDistance || aDistance < aMinDistance) {
- aX = aNewPoint.X();
- anY = aNewPoint.Y();
- aMinDistance = aDistance;
- aResult = boost::shared_ptr<GeomAPI_Pnt2d>(new GeomAPI_Pnt2d(aX, anY));
- }
- }
+ double aDist = aCenter.Distance(aPoint);
+ if (aDist < Precision::Confusion())
+ return aResult;
+
+ if (Abs(aDist - MY_CIRC2D->Radius()) < Precision::Confusion()) {
+ // Point on the circle
+ aResult = std::shared_ptr<GeomAPI_Pnt2d>(
+ new GeomAPI_Pnt2d(thePoint->x(), thePoint->y()));
+ } else {
+ gp_Dir2d aDir(aPoint.XY() - aCenter.XY());
+ gp_XY aNewPoint = aCenter.XY() + aDir.XY() * MY_CIRC2D->Radius();
+ aResult = std::shared_ptr<GeomAPI_Pnt2d>(
+ new GeomAPI_Pnt2d(aNewPoint.X(), aNewPoint.Y()));
}
+
return aResult;
}
-const boost::shared_ptr<GeomAPI_Pnt2d> GeomAPI_Circ2d::center() const
+const std::shared_ptr<GeomAPI_Pnt2d> GeomAPI_Circ2d::center() const
{
+ if (!MY_CIRC2D)
+ return std::shared_ptr<GeomAPI_Pnt2d>();
const gp_Pnt2d& aCenter = MY_CIRC2D->Location();
- return boost::shared_ptr<GeomAPI_Pnt2d>(new GeomAPI_Pnt2d(aCenter.X(), aCenter.Y()));
+ return std::shared_ptr<GeomAPI_Pnt2d>(new GeomAPI_Pnt2d(aCenter.X(), aCenter.Y()));
}
double GeomAPI_Circ2d::radius() const
{
+ if (!MY_CIRC2D)
+ return 0.0;
return MY_CIRC2D->Radius();
}
+//=================================================================================================
+const bool GeomAPI_Circ2d::parameter(const std::shared_ptr<GeomAPI_Pnt2d> thePoint,
+ const double theTolerance,
+ double& theParameter) const
+{
+ Handle(Geom2d_Circle) aCurve = new Geom2d_Circle(*MY_CIRC2D);
+ return GeomLib_Tool::Parameter(aCurve, thePoint->impl<gp_Pnt2d>(), theTolerance, theParameter) == Standard_True;
+}
+
+//=================================================================================================
+void GeomAPI_Circ2d::D0(const double theU, std::shared_ptr<GeomAPI_Pnt2d>& thePoint)
+{
+ Handle(Geom2d_Circle) aCurve = new Geom2d_Circle(*MY_CIRC2D);
+ gp_Pnt2d aPnt;
+ aCurve->D0(theU, aPnt);
+ thePoint.reset(new GeomAPI_Pnt2d(aPnt.X(), aPnt.Y()));
+}
+
