// Created on: 1995-01-25
// Created by: Mister rmi
// Copyright (c) 1995-1999 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 _Select3D_SensitiveSegment_HeaderFile
#define _Select3D_SensitiveSegment_HeaderFile

#include <Standard.hxx>
#include <Standard_Type.hxx>
#include <Standard_Type.hxx>

#include <Standard_Integer.hxx>
#include <Select3D_Pnt.hxx>
#include <Select3D_SensitiveEntity.hxx>
#include <gp_Pnt.hxx>
#include <SelectMgr_SelectingVolumeManager.hxx>
#include <Standard_OStream.hxx>

class SelectBasics_EntityOwner;
class gp_Pnt;
class TopLoc_Location;

//! A framework to define sensitive zones along a segment
//!          One gives the 3D start and end point
class Select3D_SensitiveSegment : public Select3D_SensitiveEntity
{
public:

  //! Constructs the sensitive segment object defined by
  //! the owner theOwnerId, the points theFirstPnt, theLastPnt
  Standard_EXPORT Select3D_SensitiveSegment (const Handle(SelectBasics_EntityOwner)& theOwnerId,
                                             const gp_Pnt& theFirstPnt,
                                             const gp_Pnt& theLastPnt);

  //! changes the start Point of the Segment;
  void StartPoint (const gp_Pnt& thePnt);

  //! changes the end point of the segment
  void EndPoint (const gp_Pnt& thePnt);

  //! gives the 3D start Point of the Segment
  gp_Pnt StartPoint() const;

  //! gives the 3D End Point of the Segment
  gp_Pnt EndPoint() const;

  //! Returns the amount of points
  Standard_EXPORT virtual Standard_Integer NbSubElements() Standard_OVERRIDE;

  Standard_EXPORT virtual Handle(Select3D_SensitiveEntity) GetConnected() Standard_OVERRIDE;

  //! Checks whether the segment overlaps current selecting volume
  Standard_EXPORT   virtual  Standard_Boolean Matches (SelectBasics_SelectingVolumeManager& theMgr,
                                                       SelectBasics_PickResult& thePickResult) Standard_OVERRIDE;

  //! Returns center of the segment. If location transformation
  //! is set, it will be applied
  Standard_EXPORT virtual gp_Pnt CenterOfGeometry() const Standard_OVERRIDE;

  //! Returns bounding box of the segment. If location
  //! transformation is set, it will be applied
  Standard_EXPORT virtual Select3D_BndBox3d BoundingBox() Standard_OVERRIDE;

  DEFINE_STANDARD_RTTIEXT(Select3D_SensitiveSegment,Select3D_SensitiveEntity)

private:

  gp_Pnt myStart;      //!< Start point
  gp_Pnt myEnd;        //!< End point
};

DEFINE_STANDARD_HANDLE(Select3D_SensitiveSegment, Select3D_SensitiveEntity)

#include <Select3D_SensitiveSegment.lxx>

#endif // _Select3D_SensitiveSegment_HeaderFile