// Created on: 1996-02-13
// Created by: Yves FRICAUD
// Copyright (c) 1996-1999 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.


#include <BRepOffset_MakeOffset.hxx>
#include <BRepOffsetAPI_MakeThickSolid.hxx>
#include <Standard_ConstructionError.hxx>
#include <TopoDS.hxx>
#include <TopoDS_Shape.hxx>
#include <TopTools_ListIteratorOfListOfShape.hxx>


//=======================================================================
//function : BRepOffsetAPI_MakeThickSolid
//purpose  : 
//=======================================================================
BRepOffsetAPI_MakeThickSolid::BRepOffsetAPI_MakeThickSolid()
{
  // Build only solids.
  mySimpleOffsetShape.SetBuildSolidFlag(Standard_True);
}

//=======================================================================
//function : BRepOffsetAPI_MakeThickSolid
//purpose  : 
//=======================================================================
BRepOffsetAPI_MakeThickSolid::BRepOffsetAPI_MakeThickSolid(const TopoDS_Shape& S,
                                                           const TopTools_ListOfShape& ClosingFaces,
                                                           const Standard_Real Offset,
                                                           const Standard_Real Tol,
                                                           const BRepOffset_Mode Mode,
                                                           const Standard_Boolean Intersection,
                                                           const Standard_Boolean SelfInter,
                                                           const GeomAbs_JoinType Join,
                                                           const Standard_Boolean RemoveIntEdges)
{
  // Build only solids.
  mySimpleOffsetShape.SetBuildSolidFlag(Standard_True);

  MakeThickSolidByJoin(S, ClosingFaces, Offset, Tol,
                       Mode, Intersection, SelfInter, Join, RemoveIntEdges);
}

//=======================================================================
//function : MakeThickSolidByJoin
//purpose  : 
//=======================================================================
void BRepOffsetAPI_MakeThickSolid::MakeThickSolidByJoin
(const TopoDS_Shape&         S,
 const TopTools_ListOfShape& ClosingFaces,
 const Standard_Real         Offset, 
 const Standard_Real         Tol, 
 const BRepOffset_Mode       Mode,
 const Standard_Boolean      Intersection,
 const Standard_Boolean      SelfInter,
 const GeomAbs_JoinType      Join,
 const Standard_Boolean      RemoveIntEdges)
{
  NotDone();
  myLastUsedAlgo = OffsetAlgo_JOIN;

  myOffsetShape.Initialize (S,Offset,Tol,Mode,Intersection,SelfInter,
                            Join, Standard_False, RemoveIntEdges);
  TopTools_ListIteratorOfListOfShape it(ClosingFaces);
  for (; it.More(); it.Next())
    myOffsetShape.AddFace(TopoDS::Face(it.Value()));

  myOffsetShape.MakeThickSolid();
  if (!myOffsetShape.IsDone())
    return;

  myShape  = myOffsetShape.Shape();
  Done();
}

//=======================================================================
//function : MakeThickSolidBySimple
//purpose  : 
//=======================================================================
void BRepOffsetAPI_MakeThickSolid::MakeThickSolidBySimple(const TopoDS_Shape& theS,
                                                          const Standard_Real theOffsetValue)
{
  NotDone();
  myLastUsedAlgo = OffsetAlgo_SIMPLE;

  mySimpleOffsetShape.Initialize(theS, theOffsetValue);
  mySimpleOffsetShape.Perform();

  if (!mySimpleOffsetShape.IsDone())
    return;

  myShape = mySimpleOffsetShape.GetResultShape();
  Done();
}

//=======================================================================
//function : Build
//purpose  : 
//=======================================================================
void BRepOffsetAPI_MakeThickSolid::Build()
{
}

//=======================================================================
//function : Modified
//purpose  : 
//=======================================================================
const TopTools_ListOfShape& BRepOffsetAPI_MakeThickSolid::Modified (const TopoDS_Shape& F)
{
  myGenerated.Clear();

  if (myLastUsedAlgo == OffsetAlgo_JOIN && myOffsetShape.OffsetFacesFromShapes().HasImage(F))
  {
    if (myOffsetShape.ClosingFaces().Contains(F))
    {
      myOffsetShape.OffsetFacesFromShapes().LastImage (F, myGenerated);

      // Reverse generated shapes in case of small solids.
      // Useful only for faces without influence on others.
      TopTools_ListIteratorOfListOfShape it(myGenerated);
      for (; it.More(); it.Next())
        it.Value().Reverse();
    }
  }
  else if (myLastUsedAlgo == OffsetAlgo_SIMPLE)
  {
    TopoDS_Shape aModShape = mySimpleOffsetShape.Modified(F);
    if (!aModShape.IsNull())
      myGenerated.Append(aModShape);
  }

  return myGenerated;
}