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399 lines
11 KiB
C++
399 lines
11 KiB
C++
// Created on: 1993-03-24
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// Created by: JCV
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// Copyright (c) 1993-1999 Matra Datavision
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// Copyright (c) 1999-2014 OPEN CASCADE SAS
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//
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// This file is part of Open CASCADE Technology software library.
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//
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// This library is free software; you can redistribute it and/or modify it under
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// the terms of the GNU Lesser General Public License version 2.1 as published
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// by the Free Software Foundation, with special exception defined in the file
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// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
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// distribution for complete text of the license and disclaimer of any warranty.
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//
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// Alternatively, this file may be used under the terms of Open CASCADE
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// commercial license or contractual agreement.
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#include <ElCLib.hxx>
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#include <Geom2d_Ellipse.hxx>
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#include <Geom2d_Geometry.hxx>
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#include <gp_Ax2d.hxx>
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#include <gp_Ax22d.hxx>
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#include <gp_Dir2d.hxx>
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#include <gp_Elips2d.hxx>
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#include <gp_Pnt2d.hxx>
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#include <gp_Trsf2d.hxx>
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#include <gp_Vec2d.hxx>
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#include <gp_XYZ.hxx>
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#include <Standard_ConstructionError.hxx>
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#include <Standard_RangeError.hxx>
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#include <Standard_Type.hxx>
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IMPLEMENT_STANDARD_RTTIEXT(Geom2d_Ellipse,Geom2d_Conic)
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typedef Geom2d_Ellipse Ellipse;
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typedef gp_Ax2d Ax2d;
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typedef gp_Dir2d Dir2d;
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typedef gp_Pnt2d Pnt2d;
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typedef gp_Vec2d Vec2d;
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typedef gp_Trsf2d Trsf2d;
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typedef gp_XY XY;
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//=======================================================================
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//function : Copy
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//purpose :
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//=======================================================================
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Handle(Geom2d_Geometry) Geom2d_Ellipse::Copy() const
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{
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Handle(Geom2d_Ellipse) E;
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E = new Ellipse (pos, majorRadius, minorRadius);
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return E;
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}
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//=======================================================================
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//function : Geom2d_Ellipse
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//purpose :
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//=======================================================================
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Geom2d_Ellipse::Geom2d_Ellipse (const gp_Elips2d& E) {
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majorRadius = E.MajorRadius();
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minorRadius = E.MinorRadius();
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pos = E.Axis();
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}
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//=======================================================================
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//function : Geom2d_Ellipse
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//purpose :
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//=======================================================================
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Geom2d_Ellipse::Geom2d_Ellipse (const Ax2d& MajorAxis,
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const Standard_Real MajorRadius,
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const Standard_Real MinorRadius,
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const Standard_Boolean Sense)
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:majorRadius (MajorRadius), minorRadius (MinorRadius){
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if (MajorRadius < MinorRadius || MinorRadius < 0.0 ) {
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throw Standard_ConstructionError();
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}
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pos = gp_Ax22d(MajorAxis, Sense);
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}
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//=======================================================================
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//function : Geom2d_Ellipse
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//purpose :
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//=======================================================================
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Geom2d_Ellipse::Geom2d_Ellipse (const gp_Ax22d& Axis,
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const Standard_Real MajorRadius,
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const Standard_Real MinorRadius)
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: majorRadius (MajorRadius), minorRadius (MinorRadius)
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{
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if (MajorRadius < MinorRadius || MinorRadius < 0.0 ) {
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throw Standard_ConstructionError();
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}
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pos = Axis;
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}
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//=======================================================================
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//function : SetElips2d
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//purpose :
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//=======================================================================
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void Geom2d_Ellipse::SetElips2d (const gp_Elips2d& E)
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{
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majorRadius = E.MajorRadius();
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minorRadius = E.MinorRadius();
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pos = E.Axis();
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}
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//=======================================================================
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//function : SetMajorRadius
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//purpose :
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//=======================================================================
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void Geom2d_Ellipse::SetMajorRadius (const Standard_Real MajorRadius)
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{
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if (MajorRadius < minorRadius)
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throw Standard_ConstructionError();
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else
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majorRadius = MajorRadius;
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}
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//=======================================================================
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//function : SetMinorRadius
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//purpose :
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//=======================================================================
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void Geom2d_Ellipse::SetMinorRadius (const Standard_Real MinorRadius)
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{
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if (MinorRadius < 0 || majorRadius < MinorRadius)
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{ throw Standard_ConstructionError(); }
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else
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{ minorRadius = MinorRadius; }
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}
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//=======================================================================
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//function : Elips2d
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//purpose :
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//=======================================================================
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gp_Elips2d Geom2d_Ellipse::Elips2d () const
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{
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return gp_Elips2d (pos, majorRadius, minorRadius);
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}
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//=======================================================================
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//function : ReversedParameter
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//purpose :
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//=======================================================================
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Standard_Real Geom2d_Ellipse::ReversedParameter( const Standard_Real U) const
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{
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return (2. * M_PI - U);
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}
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//=======================================================================
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//function : Directrix1
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//purpose :
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//=======================================================================
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Ax2d Geom2d_Ellipse::Directrix1 () const
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{
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gp_Elips2d Ev (pos, majorRadius, minorRadius);
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return Ev.Directrix1();
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}
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//=======================================================================
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//function : Directrix2
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//purpose :
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//=======================================================================
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Ax2d Geom2d_Ellipse::Directrix2 () const
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{
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gp_Elips2d Ev (pos, majorRadius, minorRadius);
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return Ev.Directrix2();
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}
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//=======================================================================
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//function : Eccentricity
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//purpose :
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//=======================================================================
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Standard_Real Geom2d_Ellipse::Eccentricity () const
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{
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if (majorRadius == 0.0)
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{ return 0.0; }
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else
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{ return
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(Sqrt(majorRadius*majorRadius-minorRadius*minorRadius))/majorRadius;
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}
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}
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//=======================================================================
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//function : Focal
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//purpose :
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//=======================================================================
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Standard_Real Geom2d_Ellipse::Focal () const
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{
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return 2.0 * Sqrt(majorRadius * majorRadius - minorRadius * minorRadius);
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}
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//=======================================================================
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//function : Focus1
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//purpose :
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//=======================================================================
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Pnt2d Geom2d_Ellipse::Focus1 () const
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{
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Standard_Real C = Sqrt(majorRadius * majorRadius - minorRadius * minorRadius);
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return Pnt2d (pos.Location().X() + C * pos.XDirection().X(),
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pos.Location().Y() + C * pos.XDirection().Y());
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}
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//=======================================================================
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//function : Focus2
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//purpose :
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//=======================================================================
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Pnt2d Geom2d_Ellipse::Focus2 () const
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{
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Standard_Real C = Sqrt(majorRadius * majorRadius - minorRadius * minorRadius);
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return Pnt2d (pos.Location().X() - C * pos.XDirection().X(),
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pos.Location().Y() - C * pos.XDirection().Y());
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}
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//=======================================================================
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//function : MajorRadius
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//purpose :
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//=======================================================================
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Standard_Real Geom2d_Ellipse::MajorRadius () const
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{
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return majorRadius;
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}
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//=======================================================================
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//function : MinorRadius
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//purpose :
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//=======================================================================
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Standard_Real Geom2d_Ellipse::MinorRadius () const
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{
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return minorRadius;
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}
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//=======================================================================
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//function : Parameter
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//purpose :
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//=======================================================================
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Standard_Real Geom2d_Ellipse::Parameter () const
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{
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if (majorRadius == 0.0)
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return 0.0;
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else
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return (minorRadius * minorRadius)/majorRadius;
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}
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//=======================================================================
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//function : FirstParameter
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//purpose :
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//=======================================================================
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Standard_Real Geom2d_Ellipse::FirstParameter () const
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{
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return 0.0;
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}
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//=======================================================================
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//function : LastParameter
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//purpose :
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//=======================================================================
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Standard_Real Geom2d_Ellipse::LastParameter () const
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{
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return 2.0 * M_PI;
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}
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//=======================================================================
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//function : IsClosed
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//purpose :
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//=======================================================================
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Standard_Boolean Geom2d_Ellipse::IsClosed () const
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{
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return Standard_True;
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}
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//=======================================================================
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//function : IsPeriodic
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//purpose :
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//=======================================================================
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Standard_Boolean Geom2d_Ellipse::IsPeriodic () const
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{
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return Standard_True;
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}
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//=======================================================================
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//function : D0
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//purpose :
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//=======================================================================
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void Geom2d_Ellipse::D0 (const Standard_Real U, Pnt2d& P) const
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{
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P = ElCLib::EllipseValue (U, pos, majorRadius, minorRadius);
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}
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//=======================================================================
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//function : D1
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//purpose :
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//=======================================================================
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void Geom2d_Ellipse::D1 (const Standard_Real U, Pnt2d& P, Vec2d& V1) const
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{
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ElCLib::EllipseD1 (U, pos, majorRadius, minorRadius, P, V1);
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}
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//=======================================================================
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//function : D2
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//purpose :
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//=======================================================================
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void Geom2d_Ellipse::D2 (const Standard_Real U,
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Pnt2d& P,
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Vec2d& V1, Vec2d& V2) const
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{
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ElCLib::EllipseD2 (U, pos, majorRadius, minorRadius, P, V1, V2);
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}
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//=======================================================================
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//function : D3
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//purpose :
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//=======================================================================
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void Geom2d_Ellipse::D3 (const Standard_Real U,
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Pnt2d& P,
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Vec2d& V1, Vec2d& V2, Vec2d& V3) const
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{
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ElCLib::EllipseD3 (U, pos, majorRadius, minorRadius, P, V1, V2, V3);
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}
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//=======================================================================
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//function : DN
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//purpose :
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//=======================================================================
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Vec2d Geom2d_Ellipse::DN (const Standard_Real U, const Standard_Integer N) const
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{
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Standard_RangeError_Raise_if (N < 1, " ");
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return ElCLib::EllipseDN (U, pos, majorRadius, minorRadius, N);
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}
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//=======================================================================
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//function : Transform
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//purpose :
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//=======================================================================
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void Geom2d_Ellipse::Transform (const Trsf2d& T)
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{
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majorRadius = majorRadius * Abs(T.ScaleFactor());
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minorRadius = minorRadius * Abs(T.ScaleFactor());
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pos.Transform(T);
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}
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//=======================================================================
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//function : DumpJson
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//purpose :
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//=======================================================================
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void Geom2d_Ellipse::DumpJson (Standard_OStream& theOStream, Standard_Integer theDepth) const
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{
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OCCT_DUMP_TRANSIENT_CLASS_BEGIN (theOStream)
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OCCT_DUMP_BASE_CLASS (theOStream, theDepth, Geom2d_Conic)
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OCCT_DUMP_FIELD_VALUE_NUMERICAL (theOStream, majorRadius)
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OCCT_DUMP_FIELD_VALUE_NUMERICAL (theOStream, minorRadius)
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}
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