// Copyright (C) 2005  OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
// CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
// 
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either 
// version 2.1 of the License.
// 
// This library is distributed in the hope that it will be useful 
// but WITHOUT ANY WARRANTY; without even the implied warranty of 
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU 
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public  
// License along with this library; if not, write to the Free Software 
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
//
// See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
//

#include <Standard_Stream.hxx>

#include <GEOMImpl_Fillet2dDriver.hxx>
#include <GEOMImpl_IFillet2d.hxx>
#include <GEOMImpl_Types.hxx>
#include <GEOMImpl_ILocalOperations.hxx>
#include <GEOM_Function.hxx>

#include <BRepFilletAPI_MakeFillet2d.hxx>
#include <BRepCheck_Analyzer.hxx>
#include <BRep_Tool.hxx>

#include <TopoDS.hxx>
#include <TopoDS_Shape.hxx>
#include <TopoDS_Edge.hxx>
#include <TopAbs.hxx>
#include <TopExp_Explorer.hxx>

#include <ShapeFix_ShapeTolerance.hxx>
#include <ShapeFix_Shape.hxx>

#include <Precision.hxx>
#include <gp_Pnt.hxx>
#include <StdFail_NotDone.hxx>

//=======================================================================
//function : GetID
//purpose  :
//=======================================================================
const Standard_GUID& GEOMImpl_Fillet2dDriver::GetID()
{
  static Standard_GUID aFillet2dDriver("FF1AAB41-2A14-4df2-581B-3A568163BA46");
  return aFillet2dDriver;
}


//=======================================================================
//function : GEOMImpl_Fillet2dDriver
//purpose  :
//=======================================================================
GEOMImpl_Fillet2dDriver::GEOMImpl_Fillet2dDriver()
{
}

//=======================================================================
//function : Execute
//purpose  :
//=======================================================================
Standard_Integer GEOMImpl_Fillet2dDriver::Execute(TFunction_Logbook& log) const
{
  if (Label().IsNull()) return 0;
  Handle(GEOM_Function) aFunction = GEOM_Function::GetFunction(Label());

  GEOMImpl_IFillet2d aCI (aFunction);

  TopoDS_Shape aShape;

  Handle(GEOM_Function) aRefShape = aCI.GetShape();
  TopoDS_Face aFaceShape = TopoDS::Face(aRefShape->GetValue());

  if (aFaceShape.ShapeType() != TopAbs_FACE)
    Standard_ConstructionError::Raise("Wrong arguments: two faces must be given");

  BRepFilletAPI_MakeFillet2d fillet2d (aFaceShape);

  int aLen = aCI.GetLength();
  int ind = 1;
  double rad = aCI.GetR();
  for (; ind <= aLen; ind++) {
    TopoDS_Shape aShapeVertex;
    if (GEOMImpl_ILocalOperations::GetSubShape
	(aFaceShape, aCI.GetVertex(ind), aShapeVertex)) {
      fillet2d.AddFillet(TopoDS::Vertex(aShapeVertex), rad);
    }
  }

  fillet2d.Build();
  if (!fillet2d.IsDone()) {
    StdFail_NotDone::Raise("2D Fillet can't be computed on the given shape with the given radius");
  }
  aShape = fillet2d.Shape();

  if (aShape.IsNull()) return 0;

  aFunction->SetValue(aShape);
  log.SetTouched(Label());

  return 1;
}


//=======================================================================
//function :  GEOMImpl_Fillet2dDriver_Type_
//purpose  :
//=======================================================================
Standard_EXPORT Handle_Standard_Type& GEOMImpl_Fillet2dDriver_Type_()
{

  static Handle_Standard_Type aType1 = STANDARD_TYPE(TFunction_Driver);
  if ( aType1.IsNull()) aType1 = STANDARD_TYPE(TFunction_Driver);
  static Handle_Standard_Type aType2 = STANDARD_TYPE(MMgt_TShared);
  if ( aType2.IsNull()) aType2 = STANDARD_TYPE(MMgt_TShared);
  static Handle_Standard_Type aType3 = STANDARD_TYPE(Standard_Transient);
  if ( aType3.IsNull()) aType3 = STANDARD_TYPE(Standard_Transient);


  static Handle_Standard_Transient _Ancestors[]= {aType1,aType2,aType3,NULL};
  static Handle_Standard_Type _aType = new Standard_Type("GEOMImpl_Fillet2dDriver",
			                                 sizeof(GEOMImpl_Fillet2dDriver),
			                                 1,
			                                 (Standard_Address)_Ancestors,
			                                 (Standard_Address)NULL);

  return _aType;
}

//=======================================================================
//function : DownCast
//purpose  :
//=======================================================================
const Handle(GEOMImpl_Fillet2dDriver) Handle(GEOMImpl_Fillet2dDriver)::DownCast(const Handle(Standard_Transient)& AnObject)
{
  Handle(GEOMImpl_Fillet2dDriver) _anOtherObject;

  if (!AnObject.IsNull()) {
     if (AnObject->IsKind(STANDARD_TYPE(GEOMImpl_Fillet2dDriver))) {
       _anOtherObject = Handle(GEOMImpl_Fillet2dDriver)((Handle(GEOMImpl_Fillet2dDriver)&)AnObject);
     }
  }

  return _anOtherObject ;
}