// Created on: 1994-03-24
// Created by: model
// Copyright (c) 1994-1999 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 _Adaptor3d_TopolTool_HeaderFile
#define _Adaptor3d_TopolTool_HeaderFile

#include <Adaptor2d_Line2d.hxx>
#include <Adaptor3d_HVertex.hxx>
#include <Adaptor3d_Surface.hxx>
#include <TColStd_Array1OfReal.hxx>
#include <TColStd_HArray1OfReal.hxx>
#include <TopAbs_State.hxx>
#include <TopAbs_Orientation.hxx>

class Adaptor3d_HVertex;

DEFINE_STANDARD_HANDLE(Adaptor3d_TopolTool, Standard_Transient)

//! This class provides a default topological tool,
//! based on the Umin,Vmin,Umax,Vmax of an HSurface from Adaptor3d.
//! All methods and fields may be redefined when inheriting from this class.
//! This class is used to instantiate algorithms as Intersection, outlines,...
class Adaptor3d_TopolTool : public Standard_Transient
{

public:

  Standard_EXPORT Adaptor3d_TopolTool();
  
  Standard_EXPORT Adaptor3d_TopolTool(const Handle(Adaptor3d_Surface)& Surface);
  
  Standard_EXPORT virtual void Initialize();
  
  Standard_EXPORT virtual void Initialize (const Handle(Adaptor3d_Surface)& S);
  
  Standard_EXPORT virtual void Initialize (const Handle(Adaptor2d_Curve2d)& Curve);
  
  Standard_EXPORT virtual void Init();
  
  Standard_EXPORT virtual Standard_Boolean More();
  
  Standard_EXPORT virtual Handle(Adaptor2d_Curve2d) Value();
  
  Standard_EXPORT virtual void Next();
  
  Standard_EXPORT virtual void InitVertexIterator();
  
  Standard_EXPORT virtual Standard_Boolean MoreVertex();
  
  Standard_EXPORT virtual Handle(Adaptor3d_HVertex) Vertex();
  
  Standard_EXPORT virtual void NextVertex();
  
  Standard_EXPORT virtual TopAbs_State Classify (const gp_Pnt2d& P, const Standard_Real Tol, const Standard_Boolean ReacdreOnPeriodic = Standard_True);
  
  Standard_EXPORT virtual Standard_Boolean IsThePointOn (const gp_Pnt2d& P, const Standard_Real Tol, const Standard_Boolean ReacdreOnPeriodic = Standard_True);
  
  //! If the function returns the orientation of the arc.
  //! If the orientation is FORWARD or REVERSED, the arc is
  //! a "real" limit of the surface.
  //! If the orientation is INTERNAL or EXTERNAL, the arc is
  //! considered as an arc on the surface.
  Standard_EXPORT virtual TopAbs_Orientation Orientation (const Handle(Adaptor2d_Curve2d)& C);
  
  //! Returns the orientation of the vertex V.
  //! The vertex has been found with an exploration on
  //! a given arc. The orientation is the orientation
  //! of the vertex on this arc.
  Standard_EXPORT virtual TopAbs_Orientation Orientation (const Handle(Adaptor3d_HVertex)& V);
  
  //! Returns True if the vertices V1 and V2 are identical.
  //! This method does not take the orientation of the
  //! vertices in account.
  Standard_EXPORT virtual Standard_Boolean Identical (const Handle(Adaptor3d_HVertex)& V1, const Handle(Adaptor3d_HVertex)& V2);
  
  //! answers if arcs and vertices may have 3d representations,
  //! so that we could use Tol3d and Pnt methods.
  Standard_EXPORT virtual Standard_Boolean Has3d() const;
  
  //! returns 3d tolerance of the arc C
  Standard_EXPORT virtual Standard_Real Tol3d (const Handle(Adaptor2d_Curve2d)& C) const;
  
  //! returns 3d tolerance of the vertex V
  Standard_EXPORT virtual Standard_Real Tol3d (const Handle(Adaptor3d_HVertex)& V) const;
  
  //! returns 3d point of the vertex V
  Standard_EXPORT virtual gp_Pnt Pnt (const Handle(Adaptor3d_HVertex)& V) const;
  
  Standard_EXPORT virtual void ComputeSamplePoints();
  
  //! compute the sample-points for the intersections algorithms
  Standard_EXPORT virtual Standard_Integer NbSamplesU();
  
  //! compute the sample-points for the intersections algorithms
  Standard_EXPORT virtual Standard_Integer NbSamplesV();
  
  //! compute the sample-points for the intersections algorithms
  Standard_EXPORT virtual Standard_Integer NbSamples();
  
  //! return the set of U parameters on the surface
  //! obtained by the method SamplePnts
  Standard_EXPORT void UParameters (TColStd_Array1OfReal& theArray) const;
  
  //! return the set of V parameters on the surface
  //! obtained by the method SamplePnts
  Standard_EXPORT void VParameters (TColStd_Array1OfReal& theArray) const;
  
  Standard_EXPORT virtual void SamplePoint (const Standard_Integer Index, gp_Pnt2d& P2d, gp_Pnt& P3d);
  
  Standard_EXPORT virtual Standard_Boolean DomainIsInfinite();
  
  Standard_EXPORT virtual Standard_Address Edge() const;

  //! Compute the sample-points for the intersections algorithms by adaptive algorithm for BSpline surfaces.
  //! For other surfaces algorithm is the same as in method ComputeSamplePoints(),
  //! but only fill arrays of U and V sample parameters;
  //! @param theDefl  [in] a required deflection
  //! @param theNUmin [in] minimal nb points for U
  //! @param theNVmin [in] minimal nb points for V
  Standard_EXPORT virtual void SamplePnts (const Standard_Real theDefl,
                                           const Standard_Integer theNUmin,
                                           const Standard_Integer theNVmin);

  //! Compute the sample-points for the intersections algorithms
  //! by adaptive algorithm for BSpline surfaces - is used in SamplePnts
  //! @param theDefl  [in] required deflection
  //! @param theNUmin [in] minimal nb points for U
  //! @param theNVmin [in] minimal nb points for V
  Standard_EXPORT virtual void BSplSamplePnts (const Standard_Real theDefl,
                                               const Standard_Integer theNUmin,
                                               const Standard_Integer theNVmin);

  //! Returns true if provide uniform sampling of points.
  Standard_EXPORT virtual Standard_Boolean IsUniformSampling() const;

  DEFINE_STANDARD_RTTIEXT(Adaptor3d_TopolTool,Standard_Transient)

protected:

  Handle(Adaptor3d_Surface) myS;
  Standard_Integer myNbSamplesU;
  Standard_Integer myNbSamplesV;
  Handle(TColStd_HArray1OfReal) myUPars;
  Handle(TColStd_HArray1OfReal) myVPars;

private:

  Standard_Integer nbRestr;
  Standard_Integer idRestr;
  Standard_Real Uinf;
  Standard_Real Usup;
  Standard_Real Vinf;
  Standard_Real Vsup;
  Handle(Adaptor2d_Line2d) myRestr[4];
  Standard_Integer nbVtx;
  Standard_Integer idVtx;
  Handle(Adaptor3d_HVertex) myVtx[2];

};

#endif // _Adaptor3d_TopolTool_HeaderFile