// This file is generated by WOK (CPPExt).
// Please do not edit this file; modify original file instead.
// The copyright and license terms as defined for the original file apply to 
// this header file considered to be the "object code" form of the original source.

#ifndef _GccAna_Lin2dTanPar_HeaderFile
#define _GccAna_Lin2dTanPar_HeaderFile

#include <Standard.hxx>
#include <Standard_DefineAlloc.hxx>
#include <Standard_Macro.hxx>

#include <Standard_Boolean.hxx>
#include <Standard_Integer.hxx>
#include <TColgp_Array1OfLin2d.hxx>
#include <GccEnt_Array1OfPosition.hxx>
#include <TColgp_Array1OfPnt2d.hxx>
#include <TColStd_Array1OfReal.hxx>
#include <GccEnt_Position.hxx>
#include <Standard_Real.hxx>
class Standard_OutOfRange;
class GccEnt_BadQualifier;
class StdFail_NotDone;
class gp_Pnt2d;
class gp_Lin2d;
class GccEnt_QualifiedCirc;


//! This class implements the algorithms used to create 2d
//! line tangent to a circle or a point and parallel to
//! another line.
//! The solution has the same orientation as the
//! second argument.
//! Describes functions for building a 2D line parallel to a line and:
//! -   tangential to a circle, or
//! -   passing through a point.
//! A Lin2dTanPar object provides a framework for:
//! -   defining the construction of 2D line(s),
//! -   implementing the construction algorithm, and consulting the result(s).
class GccAna_Lin2dTanPar 
{
public:

  DEFINE_STANDARD_ALLOC

  
  //! This method implements the algorithms used to create a 2d
  //! line passing through a point and parallel to
  //! another line.
  Standard_EXPORT GccAna_Lin2dTanPar(const gp_Pnt2d& ThePoint, const gp_Lin2d& Lin1);
  
  //! This method implements the algorithms used to create a 2d
  //! line tangent to a circle and parallel to another line.
  //! It raises BadQualifier in case of EnclosedCirc.
  //! Exceptions
  //! GccEnt_BadQualifier if a qualifier is inconsistent with
  //! the argument it qualifies (for example, enclosed for a circle).
  Standard_EXPORT GccAna_Lin2dTanPar(const GccEnt_QualifiedCirc& Qualified1, const gp_Lin2d& Lin1);
  
  //! Returns True if the algorithm succeeded.
  Standard_EXPORT   Standard_Boolean IsDone()  const;
  
  //! Returns the number of solutions.
  //! Raises NotDone if the construction algorithm  didn't succeed.
  Standard_EXPORT   Standard_Integer NbSolutions()  const;
  
  //! Returns the solution number Index and raises OutOfRange
  //! exception if Index is greater than the number of solutions.
  //! Be careful: the Index is only a way to get all the
  //! solutions, but is not associated to those outside the
  //! context of the algorithm-object.
  //! raises NotDone if the construction algorithm
  //! didn't succeed.
  //! It raises OutOfRange if Index is greater than the
  //! number of solutions.
  Standard_EXPORT   gp_Lin2d ThisSolution (const Standard_Integer Index)  const;
  
  //! Returns the informations about the qualifiers of the
  //! tangency arguments concerning the solution number Index.
  //! It returns the real qualifiers (the qualifiers given to the
  //! constructor method in case of enclosed, enclosing and outside
  //! and the qualifiers computed in case of unqualified).
  //! Raises NotDone if the construction algorithm
  //! didn't succeed.
  //! It raises OutOfRange if Index is greater than the
  //! number of solutions.
  Standard_EXPORT   void WhichQualifier (const Standard_Integer Index, GccEnt_Position& Qualif1)  const;
  
  //! Returns informations about the tangency point between the
  //! result number Index and the first argument.
  //! ParSol is the intrinsic parameter of the point on the
  //! solution curv.
  //! ParArg is the intrinsic parameter of the point on the
  //! argument curv.
  //! ParArg is equal 0 when the solution is passing thrue
  //! a point. Raises NotDone if the construction algorithm
  //! didn't succeed.
  //! It raises OutOfRange if Index is greater than the
  //! number of solutions.
  Standard_EXPORT   void Tangency1 (const Standard_Integer Index, Standard_Real& ParSol, Standard_Real& ParArg, gp_Pnt2d& Pnt)  const;




protected:





private:



  Standard_Boolean WellDone;
  Standard_Integer NbrSol;
  TColgp_Array1OfLin2d linsol;
  GccEnt_Array1OfPosition qualifier1;
  TColgp_Array1OfPnt2d pnttg1sol;
  TColStd_Array1OfReal par1sol;
  TColStd_Array1OfReal pararg1;


};







#endif // _GccAna_Lin2dTanPar_HeaderFile
