//----------------------------------------------------------------------------
//  EgalTech 2013-2013
//----------------------------------------------------------------------------
// File : EGkCurveBezier.h      Data : 22.11.13          Versione : 1.3a1
// Contenuto : Dichiarazione della interfaccia ICurveBezier.
//
//
//
// Modifiche : 22.11.13 DS Creazione modulo.
//
//
//----------------------------------------------------------------------------

#pragma once

#include "/EgtDev/Include/EGkCurve.h"

class ICurveArc ;

//----------------------------------------------------------------------------
class __declspec( novtable) ICurveBezier : public ICurve
{
   public :                      // IGeoObj
      ICurveBezier* Clone( void) const override = 0 ;
   public :
      virtual bool CopyFrom( const IGeoObj* pGObjSrc) = 0 ;
      virtual bool Init( int nDeg, bool bIsRational) = 0 ;
      virtual bool SetControlPoint( int nInd, const Point3d& ptCtrl) = 0 ;
      virtual bool SetControlPoint( int nInd, const Point3d& ptCtrl, double dW) = 0 ;
      virtual bool FromArc( const ICurveArc& crArc) = 0 ;
      virtual int  GetDegree( void) const = 0 ;
      virtual bool IsRational( void) const = 0 ;
      virtual bool IsAPoint( void) const = 0 ;
      virtual const Point3d& GetControlPoint( int nInd, bool* pbOk = NULL) const = 0 ;
      virtual double GetControlWeight( int nInd, bool* pbOk = NULL) const = 0 ;
      virtual bool GetControlPolygonLength( double& dLen) const = 0 ;
      virtual int  GetSingularParam( double& dPar) const = 0 ;
} ;

//-----------------------------------------------------------------------------
inline ICurveBezier* CreateCurveBezier( void)
               { return (static_cast<ICurveBezier*>( CreateGeoObj( CRV_BEZIER))) ; }
inline ICurveBezier* CloneCurveBezier( const IGeoObj* pGObj)
               { if ( pGObj == nullptr  ||  pGObj->GetType() != CRV_BEZIER)
                    return nullptr ;
                 return (static_cast<ICurveBezier*>(pGObj->Clone())) ; }
inline const ICurveBezier* GetCurveBezier( const IGeoObj* pGObj)
               { if ( pGObj == nullptr  ||  pGObj->GetType() != CRV_BEZIER)
                    return nullptr ;
                 return (static_cast<const ICurveBezier*>(pGObj)) ; }
inline ICurveBezier* GetCurveBezier( IGeoObj* pGObj)
               { if ( pGObj == nullptr  ||  pGObj->GetType() != CRV_BEZIER)
                    return nullptr ;
                 return (static_cast<ICurveBezier*>(pGObj)) ; }