// Created on: 1998-01-24
// Created by: Julia GERASIMOVA
// Copyright (c) 1998-1999 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 _PrsDim_EqualDistanceRelation_HeaderFile
#define _PrsDim_EqualDistanceRelation_HeaderFile

#include <PrsDim_Relation.hxx>
#include <PrsDim_TypeOfDist.hxx>
#include <DsgPrs_ArrowSide.hxx>

class Geom_Plane;

DEFINE_STANDARD_HANDLE(PrsDim_EqualDistanceRelation, PrsDim_Relation)

//! A framework to display equivalent distances between
//! shapes and a given plane.
//! The distance is the length of a projection from the
//! shape to the plane.
//! These distances are used to compare shapes by this vector alone.
class PrsDim_EqualDistanceRelation : public PrsDim_Relation
{
  DEFINE_STANDARD_RTTIEXT(PrsDim_EqualDistanceRelation, PrsDim_Relation)
public:

  //! Constructs a framework to display equivalent
  //! distances between the shapes aShape1, aShape2,
  //! aShape3, aShape4 and the plane aPlane.
  //! The distance is the length of a projection from the
  //! shape to the plane.
  Standard_EXPORT PrsDim_EqualDistanceRelation(const TopoDS_Shape& aShape1, const TopoDS_Shape& aShape2, const TopoDS_Shape& aShape3, const TopoDS_Shape& aShape4, const Handle(Geom_Plane)& aPlane);

  //! Sets the shape aShape to be used as the shape
  //! aShape3 in the framework created at construction time.
  void SetShape3 (const TopoDS_Shape& aShape) { myShape3 = aShape; }

  //! Returns the shape aShape3 from the framework
  //! created at construction time.
  const TopoDS_Shape& Shape3() const { return myShape3; }

  //! Sets the shape aShape to be used as the shape
  //! aShape4 in the framework created at construction time.
  void SetShape4 (const TopoDS_Shape& aShape) { myShape4 = aShape; }

  //! Returns the shape aShape4 from the framework
  //! created at construction time.
  const TopoDS_Shape& Shape4() const { return myShape4; }

public:

  //! Computes the location of an intreval between
  //! between two edges. FirstAttach , SecondAttach
  //! are the returned extreme points of the interval.
  Standard_EXPORT static void ComputeTwoEdgesLength (const Handle(Prs3d_Presentation)& aPresentation, const Handle(Prs3d_Drawer)& aDrawer, const Standard_Real ArrowSize, const TopoDS_Edge& FirstEdge, const TopoDS_Edge& SecondEdge, const Handle(Geom_Plane)& Plane, const Standard_Boolean AutomaticPos, const Standard_Boolean IsSetBndBox, const Bnd_Box& BndBox, gp_Pnt& Position, gp_Pnt& FirstAttach, gp_Pnt& SecondAttach, gp_Pnt& FirstExtreme, gp_Pnt& SecondExtreme, DsgPrs_ArrowSide& SymbolPrs);
  
  //! Computes the interval position between two vertexs. FirstAttach,
  //! SecondAttach are the returned extreme points of the interval.
  Standard_EXPORT static void ComputeTwoVerticesLength (const Handle(Prs3d_Presentation)& aPresentation, const Handle(Prs3d_Drawer)& aDrawer, const Standard_Real ArrowSize, const TopoDS_Vertex& FirstVertex, const TopoDS_Vertex& SecondVertex, const Handle(Geom_Plane)& Plane, const Standard_Boolean AutomaticPos, const Standard_Boolean IsSetBndBox, const Bnd_Box& BndBox, const PrsDim_TypeOfDist TypeDist, gp_Pnt& Position, gp_Pnt& FirstAttach, gp_Pnt& SecondAttach, gp_Pnt& FirstExtreme, gp_Pnt& SecondExtreme, DsgPrs_ArrowSide& SymbolPrs);
  
  //! Compute the interval location between a vertex and an edge. Edge may be
  //! a line or a circle.
  Standard_EXPORT static void ComputeOneEdgeOneVertexLength (const Handle(Prs3d_Presentation)& aPresentation, const Handle(Prs3d_Drawer)& aDrawer, const Standard_Real ArrowSize, const TopoDS_Shape& FirstShape, const TopoDS_Shape& SecondShape, const Handle(Geom_Plane)& Plane, const Standard_Boolean AutomaticPos, const Standard_Boolean IsSetBndBox, const Bnd_Box& BndBox, gp_Pnt& Position, gp_Pnt& FirstAttach, gp_Pnt& SecondAttach, gp_Pnt& FirstExtreme, gp_Pnt& SecondExtreme, DsgPrs_ArrowSide& SymbolPrs);

private:

  Standard_EXPORT virtual void Compute (const Handle(PrsMgr_PresentationManager)& thePrsMgr,
                                        const Handle(Prs3d_Presentation)& thePrs,
                                        const Standard_Integer theMode) Standard_OVERRIDE;

  Standard_EXPORT virtual void ComputeSelection (const Handle(SelectMgr_Selection)& theSel,
                                                 const Standard_Integer theMode) Standard_OVERRIDE;

private:

  TopoDS_Shape myShape3;
  TopoDS_Shape myShape4;
  gp_Pnt myAttachPoint1;
  gp_Pnt myAttachPoint2;
  gp_Pnt myAttachPoint3;
  gp_Pnt myAttachPoint4;
  gp_Pnt myPoint1;
  gp_Pnt myPoint2;
  gp_Pnt myPoint3;
  gp_Pnt myPoint4;

};

#endif // _PrsDim_EqualDistanceRelation_HeaderFile