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 // Created on: 1993-03-10
 // Created by: JCV
 // Copyright (c) 1993-1999 Matra Datavision
 // Copyright (c) 1999-2014 OPEN CASCADE SAS
 //
 // This file is part of Open CASCADE Technology software library.
 //
 // This library is free software; you can redistribute it and/or modify it under
 // the terms of the GNU Lesser General Public License version 2.1 as published
 // by the Free Software Foundation, with special exception defined in the file
 // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
 // distribution for complete text of the license and disclaimer of any warranty.
 //
 // Alternatively, this file may be used under the terms of Open CASCADE
 // commercial license or contractual agreement.
 
 #ifndef _Geom_SurfaceOfRevolution_HeaderFile
 #define _Geom_SurfaceOfRevolution_HeaderFile
 
 #include <Standard.hxx>
 #include <Standard_Type.hxx>
 
 #include <gp_Pnt.hxx>
 #include <Geom_SweptSurface.hxx>
 #include <GeomEvaluator_SurfaceOfRevolution.hxx>
 #include <Standard_Integer.hxx>
 class Geom_Curve;
 class gp_Ax1;
 class gp_Dir;
 class gp_Ax2;
 class gp_Trsf;
 class gp_GTrsf2d;
 class gp_Vec;
 class Geom_Geometry;
 
 
 class Geom_SurfaceOfRevolution;
 DEFINE_STANDARD_HANDLE(Geom_SurfaceOfRevolution, Geom_SweptSurface)
 
 //! Describes a surface of revolution (revolved surface).
 //! Such a surface is obtained by rotating a curve (called
 //! the "meridian") through a complete revolution about
 //! an axis (referred to as the "axis of revolution"). The
 //! curve and the axis must be in the same plane (the
 //! "reference plane" of the surface).
 //! Rotation around the axis of revolution in the
 //! trigonometric sense defines the u parametric
 //! direction. So the u parameter is an angle, and its
 //! origin is given by the position of the meridian on the surface.
 //! The parametric range for the u parameter is: [ 0, 2.*Pi ]
 //! The v parameter is that of the meridian.
 //! Note: A surface of revolution is built from a copy of the
 //! original meridian. As a result the original meridian is
 //! not modified when the surface is modified.
 //! The form of a surface of revolution is typically a
 //! general revolution surface
 //! (GeomAbs_RevolutionForm). It can be:
 //! - a conical surface, if the meridian is a line or a
 //! trimmed line (GeomAbs_ConicalForm),
 //! - a cylindrical surface, if the meridian is a line or a
 //! trimmed line parallel to the axis of revolution
 //! (GeomAbs_CylindricalForm),
 //! - a planar surface if the meridian is a line or a
 //! trimmed line perpendicular to the axis of revolution
 //! of the surface (GeomAbs_PlanarForm),
 //! - a toroidal surface, if the meridian is a circle or a
 //! trimmed circle (GeomAbs_ToroidalForm), or
 //! - a spherical surface, if the meridian is a circle, the
 //! center of which is located on the axis of the
 //! revolved surface (GeomAbs_SphericalForm).
 //! Warning
 //! Be careful not to construct a surface of revolution
 //! where the curve and the axis or revolution are not
 //! defined in the same plane. If you do not have a
 //! correct configuration, you can correct your initial
 //! curve, using a cylindrical projection in the reference plane.
 class Geom_SurfaceOfRevolution : public Geom_SweptSurface
 {
 
 public:
 
   
 
   //! C : is the meridian  or the referenced curve.
   //! A1 is the axis of revolution.
   //! The form of a SurfaceOfRevolution can be :
   //! . a general revolution surface (RevolutionForm),
   //! . a conical surface if the meridian is a line or a trimmed line
   //! (ConicalForm),
   //! . a cylindrical surface if the meridian is a line or a trimmed
   //! line parallel to the revolution axis (CylindricalForm),
   //! . a planar surface if the meridian is a line perpendicular to
   //! the revolution axis of the surface (PlanarForm).
   //! . a spherical surface,
   //! . a toroidal surface,
   //! . a quadric surface.
   //! Warnings :
   //! It is not checked that the curve C is planar and that the
   //! surface axis is in the plane of the curve.
   //! It is not checked that the revolved curve C doesn't
   //! self-intersects.
   Standard_EXPORT Geom_SurfaceOfRevolution(const Handle(Geom_Curve)& C, const gp_Ax1& A1);
   
   //! Changes the axis of revolution.
   //! Warnings :
   //! It is not checked that the axis is in the plane of the
   //! revolved curve.
   Standard_EXPORT void SetAxis (const gp_Ax1& A1);
   
   //! Changes the direction of the revolution axis.
   //! Warnings :
   //! It is not checked that the axis is in the plane of the
   //! revolved curve.
   Standard_EXPORT void SetDirection (const gp_Dir& V);
   
   //! Changes the revolved curve of the surface.
   //! Warnings :
   //! It is not checked that the curve C is planar and that the
   //! surface axis is in the plane of the curve.
   //! It is not checked that the revolved curve C doesn't
   //! self-intersects.
   Standard_EXPORT void SetBasisCurve (const Handle(Geom_Curve)& C);
   
   //! Changes the location point of the revolution axis.
   //! Warnings :
   //! It is not checked that the axis is in the plane of the
   //! revolved curve.
   Standard_EXPORT void SetLocation (const gp_Pnt& P);
   
   //! Returns the revolution axis of the surface.
   Standard_EXPORT gp_Ax1 Axis() const;
   
 
   //! Returns the location point of the axis of revolution.
   Standard_EXPORT const gp_Pnt& Location() const;
   
 
   //! Computes the position of the reference plane of the surface
   //! defined by the basis curve and the symmetry axis.
   //! The location point is the location point of the revolution's
   //! axis, the XDirection of the plane is given by the revolution's
   //! axis and the orientation of the normal to the plane is given
   //! by the sense of revolution.
   //!
   //! Raised if the revolved curve is not planar or if the revolved
   //! curve and the symmetry axis are not in the same plane or if
   //! the maximum of distance between the axis and the revolved
   //! curve is lower or equal to Resolution from gp.
   Standard_EXPORT gp_Ax2 ReferencePlane() const;
   
   //! Changes the orientation of this surface of revolution
   //! in the u  parametric direction. The bounds of the
   //! surface are not changed but the given parametric
   //! direction is reversed. Hence the orientation of the
   //! surface is reversed.
   //! As a consequence:
   //! - UReverse reverses the direction of the axis of
   //! revolution of this surface,
   Standard_EXPORT void UReverse() Standard_OVERRIDE;
   
   //! Computes the u  parameter on the modified
   //! surface, when reversing its u  parametric
   //! direction, for any point of u parameter U  on this surface of revolution.
   //! In the case of a revolved surface:
   //! - UReversedParameter returns 2.*Pi - U
   Standard_EXPORT Standard_Real UReversedParameter (const Standard_Real U) const Standard_OVERRIDE;
   
   //! Changes the orientation of this surface of revolution
   //! in the v parametric direction. The bounds of the
   //! surface are not changed but the given parametric
   //! direction is reversed. Hence the orientation of the
   //! surface is reversed.
   //! As a consequence:
   //! - VReverse reverses the meridian of this surface of revolution.
   Standard_EXPORT void VReverse() Standard_OVERRIDE;
   
   //! Computes the  v parameter on the modified
   //! surface, when reversing its  v parametric
   //! direction, for any point of v parameter V on this surface of revolution.
   //! In the case of a revolved surface:
   //! - VReversedParameter returns the reversed
   //! parameter given by the function
   //! ReversedParameter called with V on the meridian.
   Standard_EXPORT Standard_Real VReversedParameter (const Standard_Real V) const Standard_OVERRIDE;
   
   //! Computes the  parameters on the  transformed  surface for
   //! the transform of the point of parameters U,V on <me>.
   //! @code
   //!   me->Transformed(T)->Value(U',V')
   //! @endcode
   //! is the same point as
   //! @code
   //!   me->Value(U,V).Transformed(T)
   //! @endcode
   //! Where U',V' are the new values of U,V after calling
   //! @code
   //!   me->TransformParameters(U,V,T)
   //! @endcode
   //! This method multiplies V by BasisCurve()->ParametricTransformation(T)
   Standard_EXPORT virtual void TransformParameters (Standard_Real& U, Standard_Real& V, const gp_Trsf& T) const Standard_OVERRIDE;
   
   //! Returns a 2d transformation  used to find the  new
   //! parameters of a point on the transformed surface.
   //! @code
   //!   me->Transformed(T)->Value(U',V')
   //! @endcode
   //! is the same point as
   //! @code
   //!   me->Value(U,V).Transformed(T)
   //! @endcode
   //! Where U',V' are  obtained by transforming U,V with
   //! the 2d transformation returned by
   //! @code
   //!   me->ParametricTransformation(T)
   //! @endcode
   //! This  method  returns  a scale  centered  on  the
   //! U axis with BasisCurve()->ParametricTransformation(T)
   Standard_EXPORT virtual gp_GTrsf2d ParametricTransformation (const gp_Trsf& T) const Standard_OVERRIDE;
   
   //! Returns the parametric bounds U1, U2 , V1 and V2 of this surface.
   //! A surface of revolution is always complete, so U1 = 0, U2 = 2*PI.
   Standard_EXPORT void Bounds (Standard_Real& U1, Standard_Real& U2, Standard_Real& V1, Standard_Real& V2) const Standard_OVERRIDE;
   
   //! IsUClosed always returns true.
   Standard_EXPORT Standard_Boolean IsUClosed() const Standard_OVERRIDE;
   
   //! IsVClosed returns true if the meridian of this
   //! surface of revolution is closed.
   Standard_EXPORT Standard_Boolean IsVClosed() const Standard_OVERRIDE;
   
   //! IsCNu always returns true.
   Standard_EXPORT Standard_Boolean IsCNu (const Standard_Integer N) const Standard_OVERRIDE;
   
   //! IsCNv returns true if the degree of continuity of the
   //! meridian of this surface of revolution is at least N.
   //! Raised if N < 0.
   Standard_EXPORT Standard_Boolean IsCNv (const Standard_Integer N) const Standard_OVERRIDE;
   
   //! Returns True.
   Standard_EXPORT Standard_Boolean IsUPeriodic() const Standard_OVERRIDE;
   
   //! IsVPeriodic returns true if the meridian of this
   //! surface of revolution is periodic.
   Standard_EXPORT Standard_Boolean IsVPeriodic() const Standard_OVERRIDE;
   
   //! Computes the U isoparametric curve of this surface
   //! of revolution. It is the curve obtained by rotating the
   //! meridian through an angle U about the axis of revolution.
   Standard_EXPORT Handle(Geom_Curve) UIso (const Standard_Real U) const Standard_OVERRIDE;
   
   //! Computes the U isoparametric curve of this surface
   //! of revolution. It is the curve obtained by rotating the
   //! meridian through an angle U about the axis of revolution.
   Standard_EXPORT Handle(Geom_Curve) VIso (const Standard_Real V) const Standard_OVERRIDE;
   
   //! Computes the  point P (U, V) on the surface.
   //! U is the angle of the rotation around the revolution axis.
   //! The direction of this axis gives the sense of rotation.
   //! V is the parameter of the revolved curve.
   Standard_EXPORT void D0 (const Standard_Real U, const Standard_Real V, gp_Pnt& P) const Standard_OVERRIDE;
 
   //! Computes the current point and the first derivatives
   //! in the directions U and V.
   //! Raised if the continuity of the surface is not C1.
   Standard_EXPORT void D1 (const Standard_Real U, const Standard_Real V, gp_Pnt& P, gp_Vec& D1U, gp_Vec& D1V) const Standard_OVERRIDE;
 
   //! Computes the current point, the first and the second derivatives
   //! in the directions U and V.
   //! Raised if the continuity of the surface is not C2.
   Standard_EXPORT void D2 (const Standard_Real U, const Standard_Real V, gp_Pnt& P, gp_Vec& D1U, gp_Vec& D1V, gp_Vec& D2U, gp_Vec& D2V, gp_Vec& D2UV) const Standard_OVERRIDE;
 
   //! Computes the current point, the first,the second and the third
   //! derivatives in the directions U and V.
   //! Raised if the continuity of the surface is not C3.
   Standard_EXPORT void D3 (const Standard_Real U, const Standard_Real V, gp_Pnt& P, gp_Vec& D1U, gp_Vec& D1V, gp_Vec& D2U, gp_Vec& D2V, gp_Vec& D2UV, gp_Vec& D3U, gp_Vec& D3V, gp_Vec& D3UUV, gp_Vec& D3UVV) const Standard_OVERRIDE;
 
   //! Computes the derivative of order Nu in the direction u and
   //! Nv in the direction v.
   //!
   //! Raised if the continuity of the surface is not CNu in the u
   //! direction and CNv in the v direction.
   //! Raised if Nu + Nv < 1 or Nu < 0 or Nv < 0.
   //! The following  functions  evaluates the  local
   //! derivatives on surface. Useful to manage discontinuities
   //! on the surface.
   //! if    Side  =  1  ->  P  =  S( U+,V )
   //! if    Side  = -1  ->  P  =  S( U-,V )
   //! else  P  is betveen discontinuities
   //! can be evaluated using methods  of
   //! global evaluations    P  =  S( U ,V )
   Standard_EXPORT gp_Vec DN (const Standard_Real U, const Standard_Real V, const Standard_Integer Nu, const Standard_Integer Nv) const Standard_OVERRIDE;
 
   //! Applies the transformation T to this surface of revolution.
   Standard_EXPORT void Transform (const gp_Trsf& T) Standard_OVERRIDE;
   
   //! Creates a new object which is a copy of this surface of revolution.
   Standard_EXPORT Handle(Geom_Geometry) Copy() const Standard_OVERRIDE;
 
   //! Dumps the content of me into the stream
   Standard_EXPORT virtual void DumpJson (Standard_OStream& theOStream, Standard_Integer theDepth = -1) const Standard_OVERRIDE;
 
 
   DEFINE_STANDARD_RTTIEXT(Geom_SurfaceOfRevolution,Geom_SweptSurface)
 
 private:
   Handle(GeomEvaluator_SurfaceOfRevolution) myEvaluator;
   gp_Pnt loc;
 };
 
 #endif // _Geom_SurfaceOfRevolution_HeaderFile

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