// Created on: 2000-10-20
// Created by: Julia DOROVSKIKH
// Copyright (c) 2000-2014 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 _PrsDim_MidPointRelation_HeaderFile
#define _PrsDim_MidPointRelation_HeaderFile

#include "PrsDim_Relation.hxx"

class Geom_Plane;
class gp_Lin;
class gp_Circ;
class gp_Elips;

//! presentation of equal distance to point myMidPoint
class PrsDim_MidPointRelation : public PrsDim_Relation
{
  DEFINE_STANDARD_RTTIEXT(PrsDim_MidPointRelation, PrsDim_Relation)
public:
  Standard_EXPORT PrsDim_MidPointRelation(const TopoDS_Shape&            aSymmTool,
                                          const TopoDS_Shape&            FirstShape,
                                          const TopoDS_Shape&            SecondShape,
                                          const occ::handle<Geom_Plane>& aPlane);

  bool IsMovable() const override { return true; }

  void SetTool(const TopoDS_Shape& aMidPointTool) { myTool = aMidPointTool; }

  const TopoDS_Shape& GetTool() const { return myTool; }

private:
  Standard_EXPORT void Compute(const occ::handle<PrsMgr_PresentationManager>& thePrsMgr,
                               const occ::handle<Prs3d_Presentation>&         thePrs,
                               const int                                      theMode) override;

  Standard_EXPORT void ComputeSelection(const occ::handle<SelectMgr_Selection>& theSel,
                                        const int                               theMode) override;

  Standard_EXPORT void ComputeFaceFromPnt(const occ::handle<Prs3d_Presentation>& aprs,
                                          const bool                             first);

  Standard_EXPORT void ComputeEdgeFromPnt(const occ::handle<Prs3d_Presentation>& aprs,
                                          const bool                             first);

  Standard_EXPORT void ComputeVertexFromPnt(const occ::handle<Prs3d_Presentation>& aprs,
                                            const bool                             first);

  Standard_EXPORT void ComputePointsOnLine(const gp_Lin& aLin, const bool first);

  Standard_EXPORT void ComputePointsOnLine(const gp_Pnt& pnt1,
                                           const gp_Pnt& pnt2,
                                           const bool    first);

  Standard_EXPORT void ComputePointsOnCirc(const gp_Circ& aCirc,
                                           const gp_Pnt&  pnt1,
                                           const gp_Pnt&  pnt2,
                                           const bool     first);

  //! ComputePointsOn... methods set myFAttach, myFirstPnt and myLastPnt
  //! from the following initial data: curve, end points, myMidPoint.
  //! End points (pnt1 & pnt2) and curve define the trimmed curve.
  //! If end points are equal, curve is not trimmed (line - special case).
  //!
  //! .------. pnt2
  //! /
  //! .  circle  . myLastPnt
  //! |          |
  //! . pnt1     . myFAttach
  //! \   arc  /          . myMidPoint
  //! .______. myFirstPnt
  Standard_EXPORT void ComputePointsOnElips(const gp_Elips& anEll,
                                            const gp_Pnt&   pnt1,
                                            const gp_Pnt&   pnt2,
                                            const bool      first);

private:
  TopoDS_Shape myTool;
  gp_Pnt       myMidPoint;
  gp_Pnt       myFAttach;
  gp_Pnt       myFirstPnt1;
  gp_Pnt       myFirstPnt2;
  gp_Pnt       mySAttach;
  gp_Pnt       mySecondPnt1;
  gp_Pnt       mySecondPnt2;
};

#endif // _AIS_MidPointRelation_HeaderFile