// Created on: 1994-08-30
// Created by: Jean Yves LEBEY
// Copyright (c) 1994-1999 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 <BRep_Builder.hxx>
#include <BRep_Tool.hxx>
#include <BRepClass3d.hxx>
#include <BRepClass3d_SolidExplorer.hxx>
#include <BRepTools.hxx>
#include <gp_Pnt.hxx>
#include <Precision.hxx>
#include <Standard_NoSuchObject.hxx>
#include <Standard_ProgramError.hxx>
#include <TCollection_AsciiString.hxx>
#include <TopAbs.hxx>
#include <TopExp.hxx>
#include <TopExp_Explorer.hxx>
#include <TopoDS.hxx>
#include <TopoDS_Edge.hxx>
#include <TopoDS_Face.hxx>
#include <TopoDS_Shape.hxx>
#include <TopoDS_Shell.hxx>
#include <TopoDS_Solid.hxx>
#include <TopoDS_Vertex.hxx>
#include <TopoDS_Wire.hxx>
#include <TopOpeBRepBuild_Builder.hxx>
#include <TopOpeBRepBuild_define.hxx>
#include <TopOpeBRepBuild_EdgeBuilder.hxx>
#include <TopOpeBRepBuild_FaceBuilder.hxx>
#include <TopOpeBRepBuild_GTool.hxx>
#include <TopOpeBRepBuild_GTopo.hxx>
#include <TopOpeBRepBuild_HBuilder.hxx>
#include <TopOpeBRepBuild_kpresu.hxx>
#include <TopOpeBRepBuild_PaveSet.hxx>
#include <TopOpeBRepBuild_ShapeSet.hxx>
#include <TopOpeBRepBuild_ShellFaceSet.hxx>
#include <TopOpeBRepBuild_SolidBuilder.hxx>
#include <TopOpeBRepBuild_WireEdgeSet.hxx>
#include <TopOpeBRepDS_BuildTool.hxx>
#include <TopOpeBRepDS_connex.hxx>
#include <TopOpeBRepDS_CurveIterator.hxx>
#include <TopOpeBRepDS_EXPORT.hxx>
#include <TopOpeBRepDS_HDataStructure.hxx>
#include <TopOpeBRepDS_PointIterator.hxx>
#include <TopOpeBRepDS_ShapeShapeInterference.hxx>
#include <TopOpeBRepDS_SurfaceIterator.hxx>
#include <TopOpeBRepTool.hxx>
#include <TopOpeBRepTool_EXPORT.hxx>
#include <TopOpeBRepTool_SC.hxx>
#include <TopOpeBRepTool_ShapeExplorer.hxx>

#ifdef OCCT_DEBUG
extern Standard_Boolean TopOpeBRepBuild_GettraceKPB();
#endif

static void FUN_Raise() {
#ifdef OCCT_DEBUG
  std::cout<<"******************************ERROR"<<std::endl;
  throw Standard_ProgramError("KPart.cxx");
#endif
}

#define M_REVERSED(st) (st == TopAbs_REVERSED)

Standard_EXPORT Standard_Boolean FUNKP_KPiskolesh(const TopOpeBRepBuild_Builder& BU,const TopOpeBRepDS_DataStructure& BDS,const TopoDS_Shape& Sarg,TopTools_ListOfShape& lShsd,TopTools_ListOfShape& lfhsd);


//modified by NIZHNY-MKK  Fri May 19 17:03:59 2000.BEGIN
enum TopOpeBRepBuild_KPart_Operation {TopOpeBRepBuild_KPart_Operation_Fuse, TopOpeBRepBuild_KPart_Operation_Common, TopOpeBRepBuild_KPart_Operation_Cut12, TopOpeBRepBuild_KPart_Operation_Cut21};

static void LocalKPisdisjanalyse(const TopAbs_State Stsol1, const TopAbs_State  Stsol2,
				 const TopOpeBRepBuild_KPart_Operation& theOperation,
				 Standard_Integer& ires, Standard_Integer& icla1, Standard_Integer& icla2);

static TopoDS_Solid BuildNewSolid(const TopoDS_Solid& sol1, 
				  const TopoDS_Solid& sol2, 
				  const TopAbs_State stsol1, 
				  const TopAbs_State stsol2,
				  const Standard_Integer ires, 
				  const Standard_Integer icla1, 
				  const Standard_Integer icla2,
				  const TopAbs_State theState1,
				  const TopAbs_State theState2);

static Standard_Boolean disjPerformFuse(const TopTools_IndexedMapOfShape& theMapOfSolid1, 
					const TopTools_IndexedMapOfShape& theMapOfSolid2,					
					TopTools_IndexedMapOfShape& theMapOfResult);

static Standard_Boolean disjPerformCommon(const TopTools_IndexedMapOfShape& theMapOfSolid1, 
					  const TopTools_IndexedMapOfShape& theMapOfSolid2,					
					  TopTools_IndexedMapOfShape& theMapOfResult);

static Standard_Boolean disjPerformCut(const TopTools_IndexedMapOfShape& theMapOfSolid1, 
				       const TopTools_IndexedMapOfShape& theMapOfSolid2,					
				       TopTools_IndexedMapOfShape& theMapOfResult);
//modified by NIZHNY-MKK  Fri May 19 17:04:07 2000.END


//=======================================================================
//function : FindIsKPart
//purpose  : 
//=======================================================================

Standard_Integer TopOpeBRepBuild_Builder::FindIsKPart()
{
  KPClearMaps();
  
#ifdef OCCT_DEBUG
  Standard_Boolean TKPB = TopOpeBRepBuild_GettraceKPB();
  if(TKPB){std::cout<<std::endl<<"--- IsKPart ? ---"<<std::endl;}
#endif
  
  Standard_Integer isfafa = KPisfafa();
  // face,face SameDomain
  if (isfafa) {
    myIsKPart = 3;
    return KPreturn(myIsKPart);
  }
  
  Standard_Integer isdisj = KPisdisj();
  // shape,shape sans aucune interference geometrique
  if (isdisj) {
    myIsKPart = 2;
    return KPreturn(myIsKPart);
  }
  
  Standard_Integer iskole = KPiskole();
  // solide,solide colles par faces tangentes sans aretes tangentes
  if (iskole) {
    myIsKPart = 1;
    return KPreturn(myIsKPart);
  }
  
  Standard_Integer iskoletge = KPiskoletge();
  // solide,solide par faces tangentes avec aretes tangentes
  if (iskoletge) {
    myIsKPart = 5;
    return KPreturn(myIsKPart);
  }
  
  Standard_Integer issoso = KPissoso();
  // solide,solide quelconques
  if (issoso) {
    myIsKPart = 4;
    return KPreturn(myIsKPart);
  }
  
  myIsKPart = 0;
  return KPreturn(myIsKPart);
}

//=======================================================================
//function : IsKPart
//purpose  : 
//=======================================================================

Standard_Integer TopOpeBRepBuild_Builder::IsKPart() const 
{
  return myIsKPart;
}


//=======================================================================
//function : MergeKPart
//purpose  : 
//=======================================================================

void TopOpeBRepBuild_Builder::MergeKPart(const TopAbs_State TB1,
					 const TopAbs_State TB2)
{
  myState1 = TB1;
  myState2 = TB2;
  MergeKPart();  
}

//=======================================================================
//function : MergeKPart
//purpose  : 
//=======================================================================

void TopOpeBRepBuild_Builder::MergeKPart()
{
  if ( myIsKPart == 1 ) { // iskole
    MergeKPartiskole();
  }
  else if ( myIsKPart == 5 ) { // iskoletge
    MergeKPartiskoletge();
  }
  else if (myIsKPart == 2) { // isdisj
    MergeKPartisdisj();
  }
  else if ( myIsKPart == 3 ) { // isfafa
    MergeKPartisfafa();
  }
  else if ( myIsKPart == 4 ) { // issoso
    MergeKPartissoso();
  }
  End();
}

static void FUN_sortplcy(const TopTools_ListOfShape& lof, TopTools_ListOfShape& lopl, TopTools_ListOfShape& locy)
{
  TopTools_ListIteratorOfListOfShape it(lof);
  for (; it.More(); it.Next()){
    const TopoDS_Face& ff = TopoDS::Face(it.Value());
    Standard_Boolean plane    = FUN_tool_plane(ff);
    if (plane)   {lopl.Append(ff);}
    Standard_Boolean cylinder = FUN_tool_cylinder(ff);
    if (cylinder){locy.Append(ff);} 
  }
}

/*static Standard_Boolean FUN_proj2(const TopOpeBRepBuild_Builder& BU, const Handle(TopOpeBRepDS_HDataStructure)& HDS, 
		     const TopoDS_Shape& Fa2, TopTools_DataMapOfShapeListOfShape& EnewE)
{
  const TopoDS_Face& F2 = TopoDS::Face(Fa2);
  TopoDS_Wire Ow2 = BRepTools::OuterWire(TopoDS::Face(F2));
  TopExp_Explorer exe(Ow2, TopAbs_EDGE);
  for (; exe.More(); exe.Next()){
    const TopoDS_Shape& ed = exe.Current();
    Standard_Boolean issplit = BU.IsSplit(ed,TopAbs_ON);
    if (!issplit) return Standard_False;
    const TopTools_ListOfShape& speds = BU.Splits(ed,TopAbs_ON);
    TopTools_ListOfShape lfcF2; // faces of shapei connexed to ed
    FDSCNX_FaceEdgeConnexFaces(TopoDS::Face(F2),ed,HDS,lfcF2);
    // prequesitory : ed in {edges of Ow2} 
    //                ed's faces ancestor = {F2,fofj}
    if (lfcF2.Extent() != 1) return Standard_False; 
    const TopoDS_Face& fcF2 = TopoDS::Face(lfcF2.First());

    // projecting sp(ed) on faces F2 and fofj
    TopTools_ListOfShape newesp;
    TopTools_ListIteratorOfListOfShape itspe(speds);
    for (; itspe.More(); itspe.Next()){
      TopoDS_Edge esp = TopoDS::Edge(itspe.Value());
      Standard_Boolean ok = FUN_tool_pcurveonF(F2,esp);
      if (!ok) return Standard_False; 
      ok     = FUN_tool_pcurveonF(fcF2,esp); 
      if (!ok) return Standard_False; 
//      EnewE.Add(esp,newesp);
      newesp.Append(esp);
    }
    EnewE.Bind(ed,newesp);
  }
  return Standard_True;
}*/  

static void FUN_addf(const TopAbs_State sta, const TopoDS_Shape& ftoadd, TopTools_DataMapOfShapeShape& map)
{
#ifdef OCCT_DEBUG
//  Standard_Boolean isadded = map.IsBound(ftoadd);
#endif
  TopoDS_Shape fori = ftoadd;
  if (sta == TopAbs_IN) fori.Complement();
  map.Bind(fori,fori);  
}

static Standard_Integer FUN_comparekoletgesh(TopOpeBRepTool_ShapeClassifier& SC,
				const TopoDS_Shape& sh1, const TopoDS_Shape& sh2,
				const TopoDS_Shape& fkole1, const TopoDS_Shape& )
// purpose: <sh1> and <sh2> are kpkoletge on faces <fkole1>,<fkole2>
//          with <fkole1> same oriented with <fkole2>
//          returns k=1,2 if shi is contained in shk
//          else returns 0
{
  SC.SetReference(sh2);
  TopExp_Explorer exf(sh1,TopAbs_FACE);
  for (; exf.More(); exf.Next()){
    const TopoDS_Face& f1 = TopoDS::Face(exf.Current());
    if (f1.IsSame(fkole1)) continue;
    gp_Pnt pnt1;
    BRepClass3d_SolidExplorer::FindAPointInTheFace(f1,pnt1);
    SC.StateP3DReference(pnt1);
    TopAbs_State stpnt1 = SC.State();
    if (stpnt1 == TopAbs_IN)  return 2;
    if (stpnt1 == TopAbs_OUT) return 1;
  }
  return 0;
}

static Standard_Boolean FUN_changev(const Handle(TopOpeBRepDS_HDataStructure)& HDS, const TopoDS_Shape& v)
{  
  Standard_Boolean changev = HDS->HasShape(v);
  if (!changev) return Standard_False;
  changev = HDS->HasSameDomain(v);
  if (!changev) return Standard_False;
  Standard_Integer rankv = HDS->DS().AncestorRank(v);
  changev = (rankv == 2);
  return changev;
}
static Standard_Boolean FUN_updatev
(const Handle(TopOpeBRepDS_HDataStructure)& HDS, TopoDS_Edge& newed, 
 const TopoDS_Vertex& v, const TopAbs_Orientation oriv, const Standard_Real parv, const Standard_Boolean changev)
{
  TopOpeBRepDS_BuildTool BT;
  BRep_Builder BB;
  if (changev) {
    TopoDS_Shape oov; Standard_Boolean ok = FUN_ds_getoov(v,HDS,oov);
    if(!ok) return Standard_False;
    oov.Orientation(oriv);
    BB.Add(newed,oov); 
    BT.Parameter(newed,oov,parv); 
  }
  else {
    TopoDS_Shape aLocalShape = v.Oriented(oriv);
    TopoDS_Vertex ov = TopoDS::Vertex(aLocalShape);
//    TopoDS_Vertex ov = TopoDS::Vertex(v.Oriented(oriv));
    BB.Add(newed,ov); 
    BT.Parameter(newed,ov,parv);
  }
  return Standard_True;
}

static Standard_Boolean FUN_makefaces(const TopOpeBRepBuild_Builder& BU, const Handle(TopOpeBRepDS_HDataStructure)& HDS, TopTools_DataMapOfShapeListOfShape& EnewE, 
			 const TopoDS_Shape& f, const TopoDS_Shape& , TopTools_ListOfShape& newfaces)     
//prequesitory : <outerwi>=<f>'s outer wire
//purpose      : <outerwi>={edow}, 
//               edow=(vf,vl), if(rank(vj)=2 && vj sdm vj1), replace vj by vj1
// <f> gives <newf>  
   
{  
  TopOpeBRepDS_BuildTool BT;
  BRep_Builder BB;
  TopoDS_Shape aLocalShape = f.Oriented(TopAbs_FORWARD);
  TopoDS_Face F = TopoDS::Face(aLocalShape); // working on FORWARD face
//  TopoDS_Face F = TopoDS::Face(f.Oriented(TopAbs_FORWARD)); // working on FORWARD face
  TopAbs_Orientation of = f.Orientation();

  //the new outer wire :
  // -------------------
  TopTools_ListOfShape loe;
  // -------
  TopoDS_Wire outerwf = BRepTools::OuterWire(F);
  TopExp_Explorer ex(outerwf, TopAbs_EDGE);
  for (; ex.More(); ex.Next()){
    const TopoDS_Edge& ed = TopoDS::Edge(ex.Current());   
    TopAbs_Orientation oe = ed.Orientation();
    Standard_Boolean issplit = BU.IsSplit(ed,TopAbs_ON);
    Standard_Boolean isbound = EnewE.IsBound(ed);

    if (!isbound && !issplit) {
      // new edge
      TopoDS_Vertex vf,vl; TopExp::Vertices(ed,vf,vl);
      Standard_Boolean changevf = ::FUN_changev(HDS,vf);
      Standard_Boolean changevl = ::FUN_changev(HDS,vl);
      Standard_Boolean changee = changevf || changevl;
      if (changee) {
	Standard_Real ff = BRep_Tool::Parameter(vf, ed); 
	Standard_Real l  = BRep_Tool::Parameter(vl, ed);

	TopoDS_Edge newed; BT.CopyEdge(ed.Oriented(TopAbs_FORWARD),newed);
	Standard_Boolean ok = ::FUN_updatev(HDS,newed,vf,TopAbs_FORWARD,ff,changevf); 
	if (!ok) return Standard_False;
	ok     = ::FUN_updatev(HDS,newed,vl,TopAbs_REVERSED,l,changevl); 
	if (!ok) return Standard_False;
	newed.Orientation(oe);
	TopTools_ListOfShape led; led.Append(newed); EnewE.Bind(ed,led);
	isbound = Standard_True;
      }      
    }

    if (issplit) {  
      const TopTools_ListOfShape& speds = BU.Splits(ed,TopAbs_ON);	
      if (speds.Extent() == 0) return Standard_False;
      const TopoDS_Edge& spe = TopoDS::Edge(speds.First()); 
      Standard_Boolean sameori = FUN_tool_SameOri(ed,spe);
      TopAbs_Orientation orisp = spe.Orientation();
      if (!sameori) orisp = TopAbs::Complement(orisp);
	
      TopTools_ListIteratorOfListOfShape it(speds);
      for (; it.More(); it.Next()) {
	TopoDS_Edge esp = TopoDS::Edge(it.Value());
	Standard_Boolean ok = FUN_tool_pcurveonF(TopoDS::Face(f),esp); 
	if (!ok) return Standard_False;
	TopoDS_Shape ee = esp.Oriented(orisp);
	loe.Append(ee);
      }
    }
    else if (isbound) {
      const TopTools_ListOfShape& neweds = EnewE.ChangeFind(ed);
      TopTools_ListIteratorOfListOfShape itnes(neweds);
      for (; itnes.More(); itnes.Next()) loe.Append(itnes.Value().Oriented(oe));
    }
    else
      loe.Append(ed);    
  }

  TopoDS_Wire newW;
  //---------------
  BB.MakeWire(newW);
  for (TopTools_ListIteratorOfListOfShape itee(loe); itee.More(); itee.Next()) 
    BB.Add(newW,itee.Value());

  // the new face :
  // --------------
  aLocalShape = F.EmptyCopied();
  TopoDS_Face newf = TopoDS::Face(aLocalShape);
//  TopoDS_Face newf = TopoDS::Face(F.EmptyCopied());
  BB.Add(newf,newW);
  
  // other wires of <f> :
  TopExp_Explorer exw(F, TopAbs_WIRE);
  for (; exw.More(); exw.Next()){
    const TopoDS_Wire OOw = TopoDS::Wire(exw.Current());
    if (OOw.IsSame(outerwf)) continue;
    BB.Add(newf,OOw);    
  }
  
  if (M_REVERSED(of)) newf.Orientation(TopAbs_REVERSED);  

  // xpu140898 : CTS21251
  TopoDS_Face Newf = newf;
  Standard_Boolean ok = TopOpeBRepTool::CorrectONUVISO(TopoDS::Face(f),Newf);
  if (ok) newfaces.Append(Newf);
  else    newfaces.Append(newf);

  return Standard_True;
}

static Standard_Boolean FUN_rebuildfc(const TopOpeBRepBuild_Builder& BU, const Handle(TopOpeBRepDS_HDataStructure)& HDS, 
			 const TopAbs_State , const TopoDS_Shape& Fk,
			 TopTools_DataMapOfShapeListOfShape& EnewE, TopTools_IndexedDataMapOfShapeListOfShape& fcnewfc)
//              Owk = <Fk>'s outer wire
//prequesitory: Owk = {edk}, Splits(edk,Stk) = spedk
//purpose: fills up <fcnewfc> = {(fcFk,newfcFk)}
//         with {fcFk} = faces of shape k connexed to Owk
//         fcFk has edges {edk}
{
#ifdef OCCT_DEBUG
//  const TopOpeBRepDS_DataStructure& BDS = HDS->DS();
//  Standard_Integer rFk = BDS.AncestorRank(Fk);
#endif
  TopoDS_Wire Owk = BRepTools::OuterWire(TopoDS::Face(Fk));
  TopTools_ListOfShape eds; FUN_tool_shapes(Owk,TopAbs_EDGE,eds);
  TopTools_ListIteratorOfListOfShape ite(eds);  

  ite.Initialize(eds);
  for (; ite.More(); ite.Next()){
    const TopoDS_Shape& ed = ite.Value();
    TopTools_ListOfShape lfcFk; // faces of shapei connexed to ed
    FDSCNX_FaceEdgeConnexFaces(TopoDS::Face(Fk),ed,HDS,lfcFk);
    // prequesitory : ed in {edges of Owk} 
    //                ed's faces ancestor = {Fk,fofj}
    if (lfcFk.Extent() != 1) return Standard_False; 

    // purpose : Building up new topologies on connexed faces
    //           attached to outer wire's edges.
    const TopoDS_Shape& fcFk = lfcFk.First();
    TopTools_ListOfShape newfcFk; Standard_Boolean ok = FUN_makefaces(BU,HDS,EnewE,fcFk,Owk,newfcFk);
    if (!ok) return Standard_False;
    fcnewfc.Add(fcFk,newfcFk);
  } 
  return Standard_True;
} // FUN_rebuildfc

#ifdef OCCT_DEBUG
Standard_EXPORT void debiskoletge() {}
#endif

//=======================================================================
//function : MergeKPartiskoletge
//purpose  : 
//=======================================================================

void TopOpeBRepBuild_Builder::MergeKPartiskoletge()
{
#ifdef OCCT_DEBUG
  Standard_Boolean TKPB = TopOpeBRepBuild_GettraceKPB();
  if (TKPB) KPreturn(myIsKPart);
  debiskoletge();
#endif

  const TopOpeBRepDS_DataStructure& BDS = myDataStructure->DS();
//  Standard_Integer ibid;
  
  if ( myIsKPart != 5 ) {FUN_Raise(); return;}
  
  GMapShapes(myShape1,myShape2);
  // NYI : on doit pouvoir faire l'economie du mapping GMapShapes(...)
  // NYI en allant chercher l'indice 1,2 retourne par GShapeRank(S)
  // NYI dans la DS. l'index est defini pour tous les shapes HasSameDomain
  
  TopTools_ListOfShape& lmergesha1 = ChangeMerged(myShape1,myState1);
  ChangeMerged(myShape2,myState2);
  
  TopTools_ListOfShape lShsd1,lShsd2; // liste de solides HasSameDomain
  TopTools_ListOfShape lfhsd1,lfhsd2; // liste de faces HasSameDomain
  KPiskoletgesh(myShape1,lShsd1,lfhsd1);
  KPiskoletgesh(myShape2,lShsd2,lfhsd2);

  // traitement de tous les solides NYI 
  TopoDS_Shape sol1 = lShsd1.First();
  TopoDS_Shape sol2 = lShsd2.First(); 

  ChangeMerged(sol1,myState1); 
  ChangeMerged(sol2,myState2);
  
  TopTools_ListOfShape lplhsd1, lcyhsd1; ::FUN_sortplcy(lfhsd1,lplhsd1,lcyhsd1);
  TopTools_ListOfShape lplhsd2, lcyhsd2; ::FUN_sortplcy(lfhsd2,lplhsd2,lcyhsd2);
  const TopoDS_Face& fac1 = TopoDS::Face(lplhsd1.First());
  const TopoDS_Face& fac2 = TopoDS::Face(lplhsd2.First()); 
#ifdef OCCT_DEBUG
  Standard_Integer iF1 =
#endif
            myDataStructure->Shape(fac1); //DEB
#ifdef OCCT_DEBUG
  Standard_Integer iF2 =
#endif
            myDataStructure->Shape(fac2); //DEB

#ifdef OCCT_DEBUG
  if (TKPB) {std::cout<<""<<std::endl;std::cout<<"face "<<iF1<<" : ";std::cout<<iF2<<std::endl;}
#endif
    
  TopOpeBRepDS_Config config2 = BDS.SameDomainOri(fac2);

  Standard_Boolean SameOriented = (config2 == TopOpeBRepDS_SAMEORIENTED);
  
  const TopoDS_Shape* pfGRE = NULL;
  const TopoDS_Shape* pfSMA = NULL;

  Standard_Integer rgre = 1;
  if (SameOriented) {
    // getting greater 
    rgre = ::FUN_comparekoletgesh(myShapeClassifier,
				  myShape1,myShape2,fac1,fac2);
    if (rgre == 0) rgre = FUN_tool_comparebndkole(myShape1,myShape2);    
  }
  if (rgre == 0) {FUN_Raise(); return;}

  // ires :
  //-------
  Standard_Integer rsma    = (rgre == 1)? 2: 1;
  pfSMA       = (rsma == 1)? &fac1:    &fac2;
  pfGRE       = (rgre == 1)? &fac1:    &fac2;
  TopAbs_State staSMA = (rsma == 1)? myState1: myState2;
  TopAbs_State staGRE = (rgre == 1)? myState1: myState2;

  TopoDS_Shape shaSMA = (rsma == 1)? myShape1: myShape2;
  TopoDS_Shape shaGRE = (rgre == 1)? myShape1: myShape2;

  Standard_Integer ires = 0; KPiskoletgeanalyse(config2,staSMA,staGRE,ires);
  
  // merge :
  //-------  
  TopoDS_Shape sheSMA; // sheSMA = shell accedant facSMA
  TopTools_IndexedDataMapOfShapeListOfShape MfacsheSMA;
  TopExp::MapShapesAndAncestors(shaSMA,TopAbs_FACE,TopAbs_SHELL,MfacsheSMA);
  const TopTools_ListOfShape& lsheSMA = MfacsheSMA.FindFromKey(*pfSMA);
  TopTools_ListIteratorOfListOfShape itlsheSMA(lsheSMA);
  sheSMA = itlsheSMA.Value(); 
  
  TopoDS_Shape sheGRE; // sheGRE = shell accedant facGRE
  TopTools_IndexedDataMapOfShapeListOfShape MfacsheGRE;
  TopExp::MapShapesAndAncestors(shaGRE,TopAbs_FACE,TopAbs_SHELL,MfacsheGRE);
  const TopTools_ListOfShape& lsheGRE = MfacsheGRE.FindFromKey(*pfGRE);
  TopTools_ListIteratorOfListOfShape itlsheGRE(lsheGRE); 
  sheGRE = itlsheGRE.Value();

  ChangeMerged(sheSMA, staSMA);
  ChangeMerged(sheGRE, staGRE);
    
  TopoDS_Shell newshe;
  if      (ires == RESNULL) {
    return;
  }
  else if (ires == RESSHAPE1) {
    myBuildTool.MakeShell(newshe);
    newshe = TopoDS::Shell(sheSMA);
  }
  else if (ires == RESSHAPE2) {
    myBuildTool.MakeShell(newshe);
    newshe = TopoDS::Shell(sheGRE);
  }
  else if (ires == RESNEWSOL) {
    
    TopTools_DataMapOfShapeShape addedfaces;
    // As splits of outer wire's edges have 2drep only on shape1,
    // we have to project them on the connexed faces of shape2
    TopTools_DataMapOfShapeListOfShape EnewE; 
//    Standard_Boolean ok = ::FUN_proj2((*this),myDataStructure,fac2,EnewE);    
//    if (!ok) {FUN_Raise(); return;}
    
    // new topologies :
    TopTools_IndexedDataMapOfShapeListOfShape fcnewfcSMA;// faces connexed to fSMA built up with the split of outerwSMA
    TopTools_IndexedDataMapOfShapeListOfShape fcnewfcGRE;// faces connexed to fGRE built up with the split of outerwGRE    
    Standard_Boolean ok = ::FUN_rebuildfc((*this),myDataStructure,staSMA,*pfSMA,EnewE,fcnewfcSMA);
    if (!ok) {FUN_Raise(); return;}
    Standard_Integer nfcSMA = fcnewfcSMA.Extent();
//    for (Standard_Integer i=1; i<=nfcSMA; i++) {
    Standard_Integer i ;
    for ( i=1; i<=nfcSMA; i++) {
      const TopoDS_Shape& f = fcnewfcSMA.FindKey(i);
      const TopTools_ListOfShape& newlf = fcnewfcSMA.FindFromIndex(i);

      TopTools_ListIteratorOfListOfShape it(newlf);
      for (; it.More(); it.Next()){
	const TopoDS_Shape& ff = it.Value();
	::FUN_addf(staSMA,ff,addedfaces);
	ChangeMerged(f,staSMA).Append(ff);
      }
    } // fcnewfcSMA
    ok     = ::FUN_rebuildfc((*this),myDataStructure,staGRE,*pfGRE,EnewE,fcnewfcGRE);
    if (!ok) {FUN_Raise(); return;}
    Standard_Integer nfcGRE = fcnewfcGRE.Extent();
    for (i=1; i<=nfcGRE; i++) {
      const TopoDS_Shape& f = fcnewfcGRE.FindKey(i);
      const TopTools_ListOfShape& newlf = fcnewfcGRE.FindFromIndex(i);

      TopTools_ListIteratorOfListOfShape it(newlf);
      for (; it.More(); it.Next()){
	const TopoDS_Shape& ff = it.Value();
	::FUN_addf(staGRE,ff,addedfaces);
	ChangeMerged(f,staGRE).Append(ff);
      }
    } // fcnewfcGRE

    // old topologies :
    TopTools_ListOfShape lOOfSMA; // DEB : faces of SMA non connexed to fSMA
    TopTools_ListOfShape lOOfGRE; // DEB : faces of GRE non connexed to fGRE
    TopExp_Explorer exSMA(shaSMA, TopAbs_FACE);
    for (; exSMA.More(); exSMA.Next()){
      const TopoDS_Shape& ff = exSMA.Current();
      if (fcnewfcSMA.Contains(ff)) continue;
      if (ff.IsSame(*pfSMA)) continue;
      lOOfSMA.Append(ff); // DEB
      ::FUN_addf(staSMA,ff,addedfaces);
    }
    TopExp_Explorer exGRE(shaGRE, TopAbs_FACE);
    for (; exGRE.More(); exGRE.Next()){
      const TopoDS_Shape& ff = exGRE.Current();
      if (fcnewfcGRE.Contains(ff)) continue;
      if (ff.IsSame(*pfGRE)) continue;
      lOOfGRE.Append(ff); // DEB
      ::FUN_addf(staGRE,ff,addedfaces);
    }
   
    // newshell :
    TopTools_DataMapIteratorOfDataMapOfShapeShape itadd(addedfaces);
    Standard_Boolean yauadd = itadd.More();
    if (yauadd) {
      myBuildTool.MakeShell(newshe);
      myBuildTool.Closed(newshe,Standard_True);  // NYI : check exact du caractere closed du shell
    }
    for (; itadd.More(); itadd.Next() ) {
      const TopoDS_Shape& ftoadd = itadd.Key();
      myBuildTool.AddShellFace(newshe,ftoadd);
    }
    
  } // RESNEWSOL  

  TopoDS_Solid newsol;
  if ( !newshe.IsNull() ) {
    myBuildTool.MakeSolid(newsol);
    myBuildTool.AddSolidShell(newsol,newshe);
  }
  
  // le solide final
  if ( !newsol.IsNull() ) {
    lmergesha1.Append(newsol);
  }
  
} // MergeKPartiskoletge

//=======================================================================
//function : MergeKPartisdisj
//purpose  : 
//=======================================================================

void TopOpeBRepBuild_Builder::MergeKPartisdisj()
{
#ifdef OCCT_DEBUG
  Standard_Boolean TKPB = TopOpeBRepBuild_GettraceKPB();
  if (TKPB) KPreturn(myIsKPart);
#endif
  
  if (myIsKPart != 2) return; // isdisj
  
  TopTools_ListOfShape& lmergesha1 = ChangeMerged(myShape1,myState1);
/*  TopTools_ListOfShape& lmergesha2 =*/ ChangeMerged(myShape2,myState2);
  
  Standard_Boolean soldisj = Standard_False;
  TopOpeBRepTool_ShapeExplorer exsol1(myShape1,TopAbs_SOLID);
  Standard_Boolean hassol1 = exsol1.More();
  TopOpeBRepTool_ShapeExplorer exsol2(myShape2,TopAbs_SOLID);
  Standard_Boolean hassol2 = exsol2.More();
  soldisj = (hassol1 && hassol2);

//modified by NIZHNY-MKK  Fri May 19 16:18:12 2000.BEGIN  
  Standard_Boolean hasnotsol1=Standard_False;
  Standard_Boolean hasnotsol2=Standard_False;
  TopExp_Explorer anExp(myShape1, TopAbs_SHELL, TopAbs_SOLID);
  for(Standard_Integer i=TopAbs_SHELL; i <= TopAbs_VERTEX && !hasnotsol1 && !hasnotsol2; i++) {
    anExp.Init(myShape1, (TopAbs_ShapeEnum)i, TopAbs_SOLID);
    if(anExp.More())
      hasnotsol1 = Standard_True;
    anExp.Init(myShape2, (TopAbs_ShapeEnum)i, TopAbs_SOLID);
    if(anExp.More())
      hasnotsol2 = Standard_True;
  }
  soldisj = !(hasnotsol1 || hasnotsol2);
//modified by NIZHNY-MKK  Fri May 19 16:18:16 2000.END
  
  TopoDS_Solid sol1; TopoDS_Shell outsha1;
  TopoDS_Solid sol2; TopoDS_Shell outsha2;
  
  if ( soldisj ) {
//modified by NIZHNY-MKK  Fri May 19 16:47:19 2000.BEGIN
    TopTools_IndexedMapOfShape aMapOfSolid1, aMapOfSolid2;
    TopExp::MapShapes(myShape1, TopAbs_SOLID, aMapOfSolid1);
    TopExp::MapShapes(myShape2, TopAbs_SOLID, aMapOfSolid2);

    if(aMapOfSolid1.Extent() > 1 || aMapOfSolid2.Extent() > 1) {
      TopTools_IndexedMapOfShape aMapOfResult;
      if(Opefus()) {
	if(!disjPerformFuse(aMapOfSolid1, aMapOfSolid2, aMapOfResult))
	  return;
      }
      else if(Opec12()) {
	if(!disjPerformCut(aMapOfSolid1, aMapOfSolid2, aMapOfResult))
	  return;
      }
      else if(Opec21()) {
	if(!disjPerformCut(aMapOfSolid2, aMapOfSolid1, aMapOfResult))
	  return;
      }
      else if(Opecom()) {
	if(!disjPerformCommon(aMapOfSolid1, aMapOfSolid2, aMapOfResult))
	  return;
      }      
      for(Standard_Integer ii=1; ii<=aMapOfResult.Extent(); ii++) {
	lmergesha1.Append(aMapOfResult(ii));
      }      
      return;
    } //end if(aMapOfSolid1.Extent() > 1 || aMapOfSolid2.Extent() > 1)
    else {
//modified by NIZHNY-MKK  Fri May 19 16:47:23 2000.END
      sol1 = TopoDS::Solid(exsol1.Current());
      ChangeMerged(sol1,myState1);
      outsha1 = BRepClass3d::OuterShell(sol1);
      
      sol2 = TopoDS::Solid(exsol2.Current());
      ChangeMerged(sol2,myState2);
      outsha2 = BRepClass3d::OuterShell(sol2);
      
      TopAbs_State stsol1 = KPclasSS(outsha1,sol2);
      TopAbs_State stsol2 = KPclasSS(outsha2,sol1);
      
      Standard_Integer ires,icla1,icla2;
      KPisdisjanalyse(stsol1,stsol2,ires,icla1,icla2);
      
      if      (ires == RESUNDEF)  {
	return;
      }
      
      else if (icla1 == SHEUNDEF || icla2 == SHEUNDEF) {
	return;
      }
      
      else if (ires == RESNULL) {
	return;
      }
      
      else if (ires == RESSHAPE12) {
	lmergesha1.Append(myShape1);
	lmergesha1.Append(myShape2);
	return;
      }
      
      else if (ires == RESSHAPE1) {
	lmergesha1.Append(myShape1);
	return;
      }
      
      else if (ires == RESSHAPE2) {
	lmergesha1.Append(myShape2);
	return;
      }
      
      else if (ires == RESNEWSHA1 ||
	       ires == RESNEWSHA2) {
      //modified by NIZHNY-MKK  Tue May 23 11:36:33 2000.BEGIN
	TopoDS_Solid newsol = BuildNewSolid(sol1, sol2, stsol1, stsol2, ires, icla1, icla2, myState1, myState2);
      //modified by NIZHNY-MKK  Tue May 23 11:36:39 2000.END      
	lmergesha1.Append(newsol);
	return;
      }    
      else {
#ifdef OCCT_DEBUG
	std::cout<<"TopOpeBRepBuild_MergeKPart soldisj : ires = "<<ires<<std::endl;
#endif
	return;
      }
//modified by NIZHNY-MKK  Tue May 23 11:37:15 2000
    } //end else of if(aMapOfSolid1.Extent() > 1 || aMapOfSolid2.Extent() > 1)
    
  } // if (soldisj)
  else { //

    if      (Opec12()) {
      lmergesha1.Append(myShape1);
    }
    else if (Opec21()) {
      lmergesha1.Append(myShape2);
    }
    else if (Opecom()) {
      lmergesha1.Clear();
    }
    else if (Opefus()) {
      lmergesha1.Append(myShape1);
      lmergesha1.Append(myShape2);
    }
    else return;

  } // ( !soldisj )
  
  return;
  
} // MergeKPartisdisj

//=======================================================================
//function : MergeKPartisfafa
//purpose  : 
//=======================================================================

void TopOpeBRepBuild_Builder::MergeKPartisfafa()
{
#ifdef OCCT_DEBUG
  Standard_Boolean TKPB = TopOpeBRepBuild_GettraceKPB();
  if (TKPB) KPreturn(myIsKPart);
#endif
  
  if ( myIsKPart == 3 ) { // isfafa
    
    TopExp_Explorer ex;
    ex.Init(myShape1,TopAbs_FACE); if (! ex.More() ) return;
    TopoDS_Shape F1 = ex.Current();
    ex.Init(myShape2,TopAbs_FACE); if (! ex.More() ) return;
    TopoDS_Shape F2 = ex.Current();
    
    TopTools_ListOfShape LF1,LF2;
    GFindSamDom(F1,LF1,LF2);
    
    TopAbs_ShapeEnum tf = TopAbs_FACE;
    TopOpeBRepBuild_GTopo G;
    if      (Opec12()) G=TopOpeBRepBuild_GTool::GCutSame(tf,tf);
    else if (Opec21()) G=TopOpeBRepBuild_GTool::GCutSame(tf,tf).CopyPermuted();
    else if (Opecom()) G=TopOpeBRepBuild_GTool::GComSame(tf,tf);
    else if (Opefus()) G=TopOpeBRepBuild_GTool::GFusSame(tf,tf);
    else return;
    
    GMapShapes(myShape1,myShape2);
    GMergeFaces(LF1,LF2,G);
    
    if (myShape1.ShapeType() == TopAbs_COMPOUND) {
      TopTools_ListOfShape& L1 = ChangeMerged(myShape1,myState1);
      L1 = ChangeMerged(F1,myState1);
    }
    
    if (myShape2.ShapeType() == TopAbs_COMPOUND) {
      TopTools_ListOfShape& L2 = ChangeMerged(myShape2,myState2);
      L2 = ChangeMerged(F2,myState2);
    }
    
  }
  
} // MergeKPartisfafa

//=======================================================================
//function : MergeKPartissoso
//purpose  : 
//=======================================================================

void TopOpeBRepBuild_Builder::MergeKPartissoso()
{
#ifdef OCCT_DEBUG
  Standard_Boolean TKPB = TopOpeBRepBuild_GettraceKPB();
  if (TKPB) KPreturn(myIsKPart);
#endif
  
  if ( myIsKPart == 4 ) { // issoso
    
    TopExp_Explorer ex;
    
    TopoDS_Shape SO1;
    if (!myShape1.IsNull()) {
      ex.Init(myShape1,TopAbs_SOLID); 
      if (! ex.More() ) return;
      SO1 = ex.Current();
    }
    
    TopoDS_Shape SO2;
    if (!myShape2.IsNull()) {
      ex.Init(myShape2,TopAbs_SOLID); 
      if (! ex.More() ) return;
      SO2 = ex.Current();
    }
    
    if (SO1.IsNull()) return;
    
    TopTools_ListOfShape LSO1,LSO2;
    GFindSamDom(SO1,LSO1,LSO2);
    
    TopAbs_ShapeEnum tf = TopAbs_FACE; // NYI TopAbs_SOLID
    TopOpeBRepBuild_GTopo G;
    if      (Opec12()) G=TopOpeBRepBuild_GTool::GCutSame(tf,tf);
    else if (Opec21()) G=TopOpeBRepBuild_GTool::GCutSame(tf,tf).CopyPermuted();
    else if (Opecom()) G=TopOpeBRepBuild_GTool::GComSame(tf,tf);
    else if (Opefus()) G=TopOpeBRepBuild_GTool::GFusSame(tf,tf);
    else return;
    
    GMapShapes(myShape1,myShape2);
    GMergeSolids(LSO1,LSO2,G);
    
    if (!myShape1.IsNull()) {
      if (myShape1.ShapeType() == TopAbs_COMPOUND) {
	TopTools_ListOfShape& L1 = ChangeMerged(myShape1,myState1);
	L1 = ChangeMerged(SO1,myState1);
      }
    }
    
    if (!myShape2.IsNull()) {
      if (myShape2.ShapeType() == TopAbs_COMPOUND) {
	TopTools_ListOfShape& L2 = ChangeMerged(myShape2,myState2);
	L2 = ChangeMerged(SO2,myState2);
      }
    }
    
  }
  
} // MergeKPartissoso

static Standard_Boolean sectionedgesON(const Handle(TopOpeBRepDS_HDataStructure)& HDS, const TopoDS_Shape& outerw1, 
			  const TopTools_IndexedMapOfShape& mape2)
// prequesitory : all edges of <outerw1> are section edges
{
  TopExp_Explorer ex1(outerw1, TopAbs_EDGE);
  for (; ex1.More(); ex1.Next()){
    const TopoDS_Shape& e1 = ex1.Current();
    TopTools_ListIteratorOfListOfShape it2 = HDS->SameDomain(e1);
    if (!it2.More()) return Standard_False; // xpu231098 : cto904C7 : e1 !hsd
    for (; it2.More(); it2.Next()){
      const TopoDS_Shape& e2 = it2.Value();
      Standard_Boolean isbound = mape2.Contains(e2);
      if (!isbound) return Standard_False;
    }
  }  
  return Standard_True;
}

static Standard_Boolean allIonsectionedges(const Handle(TopOpeBRepDS_HDataStructure)& HDS, const TopoDS_Shape& f1, 
			      const TopTools_IndexedMapOfShape& mape1, 
			      const TopTools_IndexedMapOfShape& mape2)
// prequesitory : all interferences attached to <f1> are SSI
{  
  TopOpeBRepDS_ListIteratorOfListOfInterference it1(HDS->DS().ShapeInterferences(f1));
  for (; it1.More(); it1.Next()){
    Handle(TopOpeBRepDS_ShapeShapeInterference) SSI1 (Handle(TopOpeBRepDS_ShapeShapeInterference)::DownCast(it1.Value()));    
    Standard_Integer G1 = SSI1->Geometry();
    Standard_Boolean isgbound = SSI1->GBound();
    const TopoDS_Shape& e1 = HDS->Shape(G1);
    Standard_Boolean isbound = isgbound? mape1.Contains(e1): mape2.Contains(e1);
    if (!isbound) return Standard_False;
  }  
  return Standard_True;  
} 

//=======================================================================
//function : KPiskoletge
//purpose  : detection faces collees tangentes sur wire exterieur
//=======================================================================

Standard_Integer TopOpeBRepBuild_Builder::KPiskoletge()
{  
/*#ifdef OCCT_DEBUG
  Standard_Boolean TKPB = TopOpeBRepBuild_GettraceKPB();
#endif*/
  
  TopTools_ListOfShape lShsd1,lShsd2; // liste de solides HasSameDomain
  TopTools_ListOfShape lfhsd1,lfhsd2; // liste de faces HasSameDomain
  
  Standard_Boolean iskp1 = KPiskoletgesh(myShape1,lShsd1,lfhsd1);
  if ( !iskp1 ) return 0;
  TopTools_ListOfShape lplhsd1, lcyhsd1; ::FUN_sortplcy(lfhsd1,lplhsd1, lcyhsd1);
  Standard_Integer nplhsd1 = lplhsd1.Extent(); Standard_Integer ncyhsd1 = lcyhsd1.Extent();
  if ( nplhsd1 != 1 ) return 0;
  if ( ncyhsd1 > 1 ) return 0;
  
  Standard_Boolean iskp2 = KPiskoletgesh(myShape2,lShsd2,lfhsd2);
  if ( !iskp2 ) return 0;
  TopTools_ListOfShape lplhsd2, lcyhsd2; ::FUN_sortplcy(lfhsd2,lplhsd2, lcyhsd2);
  Standard_Integer nplhsd2 = lplhsd2.Extent(); Standard_Integer ncyhsd2 = lcyhsd2.Extent();
  if ( nplhsd2 != 1 ) return 0;
  
  // Si l'un des objets est constitue de plusieurs solides on passe
  // dans le cas general.
  Standard_Integer nshsd1 = lShsd1.Extent();
  Standard_Integer nshsd2 = lShsd2.Extent();
  if ( nshsd1>1 || nshsd2>1 ) return 0;


  // NYI : (nplhsd1 > 1) || (nplhsd2 > 1)
  // ------------------------------------

  const TopoDS_Face& f1 = TopoDS::Face(lplhsd1.First());  
#ifdef OCCT_DEBUG
//  Standard_Boolean isb1 = myKPMAPf1f2.IsBound(f1); // DEB
#endif

  const TopoDS_Face& f2 = TopoDS::Face(lplhsd2.First()); 
#ifdef OCCT_DEBUG
//  Standard_Boolean isb2 = myKPMAPf1f2.IsBound(f2); // DEB
#endif

#ifdef OCCT_DEBUG
  Standard_Integer iF1,iF2; 
  Standard_Boolean tSPS1 = GtraceSPS(f1,iF1);
  Standard_Boolean tSPS2 = GtraceSPS(f2,iF2);
  if(tSPS1 || tSPS2) 
    {GdumpSHA( f1, (char *) "KPiskoletge ");
    std::cout<<std::endl; 
    GdumpSHA(  f2, (char *)"KPiskoletge ");
    std::cout<<std::endl;}
#endif

  TopoDS_Wire outerw1 = BRepTools::OuterWire(f1);
  TopoDS_Wire outerw2 = BRepTools::OuterWire(f2);

  TopTools_IndexedMapOfShape mape1; TopExp::MapShapes(outerw1, TopAbs_EDGE, mape1);
  TopTools_IndexedMapOfShape mape2; TopExp::MapShapes(outerw2, TopAbs_EDGE, mape2);

  Standard_Boolean se1ONouterw2 =  ::sectionedgesON(myDataStructure,outerw1,mape2);
  if (!se1ONouterw2) return 0;
  Standard_Boolean se2ONouterw1 =  ::sectionedgesON(myDataStructure,outerw2,mape1);
  if (!se2ONouterw1) return 0;

  // NYI : <fi> interfers with faces of <Sj> on edges different from outerw's edges
  // ------------------------------------------------------------------------------
  Standard_Boolean allI1onseouterw = ::allIonsectionedges(myDataStructure,f1,mape1,mape2);
  if (!allI1onseouterw) return 0;
  Standard_Boolean allI2onseouterw = ::allIonsectionedges(myDataStructure,f2,mape2,mape1);
  if (!allI2onseouterw) return 0;
  

  // NYI : (ncyhsd1 > 1) || (ncyhsd2 > 1)
  // ------------------------------------
  // KPcycy :
  if (ncyhsd1 > 0) {
    Standard_Boolean cycy = ( ncyhsd1 == 1 ) && ( ncyhsd2 == 1 );
    if (!cycy) return 0;
    
    Standard_Boolean isbound1 = FUN_tool_inS(outerw1,f1);
    if (!isbound1) return 0;
    Standard_Boolean isbound2 = FUN_tool_inS(outerw2,f2);
    if (!isbound2) return 0;
  }

  return 1;
}

//=======================================================================
//function : KPisdisj
//purpose  : detection shapes disjoints
//=======================================================================

Standard_Integer TopOpeBRepBuild_Builder::KPisdisj()
{
#ifdef OCCT_DEBUG
  Standard_Boolean TKPB = TopOpeBRepBuild_GettraceKPB();
#endif
  
  // myShape1 et myShape2 : aucune interference
  const TopOpeBRepDS_DataStructure& DS = myDataStructure->DS();
  //  Standard_Integer nsh = DS.NbShapes();
  //  if (nsh != 2) return 0;
  
  if (!DS.HasShape(myShape1)) return 0;
  if (!DS.HasShape(myShape2)) return 0;
  
  Standard_Integer isdisj1 = KPisdisjsh(myShape1);
  Standard_Integer isdisj2 = KPisdisjsh(myShape2);
  
#ifdef OCCT_DEBUG
  if (TKPB) {
    std::cout<<"isdisj : "<<isdisj1<<" "<<isdisj2<<std::endl;
  }
#endif
  
  Standard_Integer isdisj = (isdisj1 && isdisj2) ? 1 : 0;
  return isdisj;
}

//=======================================================================
//function : KPisfafa
//purpose  : detection {face} / {face} toutes HasSameDomain 
//=======================================================================

Standard_Integer TopOpeBRepBuild_Builder::KPisfafa()
{  
/*#ifdef OCCT_DEBUG
  Standard_Boolean TKPB = TopOpeBRepBuild_GettraceKPB();
#endif*/

  return KPisfafash(myShape1) != 0
      && KPisfafash(myShape2) != 0
       ? 1
       : 0;
}

//=======================================================================
//function : KPissoso
//purpose  : detection {solide} / {solide} tous HasSameDomain 
//=======================================================================

Standard_Integer TopOpeBRepBuild_Builder::KPissoso()
{  
/*#ifdef OCCT_DEBUG
  Standard_Boolean TKPB = TopOpeBRepBuild_GettraceKPB();
#endif*/

  return KPissososh(myShape1) != 0
      && KPissososh(myShape2) != 0
       ? 1
       : 0;
}

//=======================================================================
//function : KPClearMaps
//purpose  : 
//=======================================================================

void TopOpeBRepBuild_Builder::KPClearMaps()
{ 
  myKPMAPf1f2.Clear();
}

//=======================================================================
//function : KPlhg
//purpose  : --> nb des subsshapes <T> de <S> qui sont HasGeometry()
//=======================================================================

Standard_Integer TopOpeBRepBuild_Builder::KPlhg(const TopoDS_Shape& S,const TopAbs_ShapeEnum T) const 
{
  TopTools_ListOfShape L;
  Standard_Integer n = KPlhg(S,T,L);
  return n;
}

//=======================================================================
//function : KPlhg
//purpose  : --> nb +liste des subsshapes <T> de <S> qui sont HasGeometry()
//=======================================================================

Standard_Integer TopOpeBRepBuild_Builder::KPlhg(const TopoDS_Shape& S,const TopAbs_ShapeEnum T,TopTools_ListOfShape& L) const 
{
  Standard_Integer n = 0;
  L.Clear();
  
  TopExp_Explorer ex;
  for (ex.Init(S,T); ex.More(); ex.Next()) {
//  for (TopExp_Explorer ex(S,T); ex.More(); ex.Next()) {
    const TopoDS_Shape& s = ex.Current();
    Standard_Boolean hg = myDataStructure->HasGeometry(s);
    if (hg) {
      n++;
      L.Append(s);
    }
  }
  
  return n;
}

//=======================================================================
//function : KPlhsd
//purpose  : 
// KPlhsd --> nb des subsshapes <T> de <S> qui sont HasSameDomain()
//=======================================================================

Standard_Integer TopOpeBRepBuild_Builder::KPlhsd(const TopoDS_Shape& S,const TopAbs_ShapeEnum T) const 
{
  TopTools_ListOfShape L;
  Standard_Integer n = KPlhsd(S,T,L);
  return n;
}

//=======================================================================
//function : KPlhsd
//purpose  : 
// KPlhsd --> nb + liste des subsshapes <T> de <S> qui sont HasSameDomain()
//=======================================================================

Standard_Integer TopOpeBRepBuild_Builder::KPlhsd(const TopoDS_Shape& S,const TopAbs_ShapeEnum T,TopTools_ListOfShape& L) const 
{
  Standard_Integer n = 0;
  L.Clear();
  
  TopExp_Explorer ex;
  for (ex.Init(S,T); ex.More(); ex.Next()) {
//  for (TopExp_Explorer ex(S,T); ex.More(); ex.Next()) {
    const TopoDS_Shape& s = ex.Current();
    Standard_Boolean hsd = myDataStructure->HasSameDomain(s);
    if (hsd) {
      n++;
      L.Append(s);
    }
  }
  
  return n;
}

//=======================================================================
//function : KPclasSS
//purpose  : 
// classifie le shape S1 par rapport a S2 en evitant de prendre
// les shape exLS1 de S1 comme element de classification.
// exS1 peut etre IsNull().
// S1,S2 = SOLID | SHELL
//=======================================================================

TopAbs_State TopOpeBRepBuild_Builder::KPclasSS(const TopoDS_Shape& S1,const TopTools_ListOfShape& exLS1,const TopoDS_Shape& S2)
{
  TopAbs_State state = TopAbs_UNKNOWN;
  state = myShapeClassifier.StateShapeShape(S1,exLS1,S2);
  
#ifdef OCCT_DEBUG
  if (TopOpeBRepBuild_GettraceKPB()) {
    const gp_Pnt& P1 = myShapeClassifier.P3D();
    std::cout<<"point P1 "<<P1.X()<<" "<<P1.Y()<<" "<<P1.Z();
    std::cout<<"  "; TopAbs::Print(state,std::cout);std::cout<<std::endl;
  }
#endif
  
  return state;
}

//=======================================================================
//function : KPclasSS
//purpose  : 
// classifie le shape S1 par rapport a S2 en evitant de prendre
// le shape exS1 de S1 comme element de classification.
// exS1 peut etre IsNull().
// S1,S2 = SOLID | SHELL
//=======================================================================

TopAbs_State TopOpeBRepBuild_Builder::KPclasSS(const TopoDS_Shape& S1,const TopoDS_Shape& exS1,const TopoDS_Shape& S2)
{
  TopAbs_State state = myShapeClassifier.StateShapeShape(S1,exS1,S2);
  
#ifdef OCCT_DEBUG
  if (TopOpeBRepBuild_GettraceKPB()) {
    const gp_Pnt& P1 = myShapeClassifier.P3D();
    std::cout<<"point P1 "<<P1.X()<<" "<<P1.Y()<<" "<<P1.Z();
    std::cout<<"  "; TopAbs::Print(state,std::cout);std::cout<<std::endl;
  }
#endif
  
  return state;
}

//=======================================================================
//function : KPclasSS
//purpose  : classifie le shape S1 par rapport a S2 sans evitement de shape
// S1,S2 = SOLID | SHELL
//=======================================================================

TopAbs_State TopOpeBRepBuild_Builder::KPclasSS(const TopoDS_Shape& S1,const TopoDS_Shape& S2)
{
  TopoDS_Shape Snull;
  TopAbs_State state = KPclasSS(S1,Snull,S2);
  return state;
}

//=======================================================================
//function : KPiskoletgesh
//purpose  : 
// KPiskoletgesh : 
// S est il un shape traite par le cas particulier de koletge?
// si oui : retourne un solide et une liste de faces de collage
//=======================================================================

Standard_Boolean TopOpeBRepBuild_Builder::KPiskoletgesh(const TopoDS_Shape& Sarg,TopTools_ListOfShape& lShsd,TopTools_ListOfShape& lfhsd) const 
{
#ifdef OCCT_DEBUG
  Standard_Boolean TKPB = TopOpeBRepBuild_GettraceKPB();
#endif
  const TopOpeBRepDS_DataStructure& BDS = myDataStructure->DS();
  Standard_Boolean iskolesh = FUNKP_KPiskolesh((*this),BDS,Sarg,lShsd,lfhsd);
  if (!iskolesh) return Standard_False;
  
#ifdef OCCT_DEBUG
  Standard_Integer nfhsd =
#endif
              KPlhsd(Sarg,TopAbs_FACE,lfhsd);
  TopTools_ListIteratorOfListOfShape it(lfhsd);
  for (; it.More(); it.Next() ) {
    const TopoDS_Face& fac = TopoDS::Face(it.Value());    
    Standard_Boolean isplan = FUN_tool_plane(fac);
    Standard_Boolean iscylinder = FUN_tool_cylinder(fac); 
    if (iscylinder) continue;
    if (!isplan) return Standard_False;
   
    TopoDS_Wire outerw = BRepTools::OuterWire(fac);
    if (outerw.IsNull()) return Standard_False;

    TopExp_Explorer exe(outerw, TopAbs_EDGE);
//    Standard_Integer ne = 0;
    for (; exe.More(); exe.Next()){
      const TopoDS_Edge& ed = TopoDS::Edge(exe.Current());
      Standard_Boolean isse = BDS.IsSectionEdge(ed);
      const TopTools_ListOfShape& sp = (*this).Splits(ed,TopAbs_ON);	
      if (sp.Extent() == 0) return Standard_False;
      if (!isse) return Standard_False;
//      ne++;
    }
//    if (ne > 1) return Standard_False;

#ifdef OCCT_DEBUG
    Standard_Integer isol = myDataStructure->Shape(Sarg); Standard_Integer ifac = myDataStructure->Shape(fac); 
    if(TKPB){std::cout<<"isol "<<isol<<std::endl;}
    if(TKPB){std::cout<<"nfhsd  "<<nfhsd<<std::endl;}
    if(TKPB){std::cout<<"ifac "<<ifac<<std::endl;}
    if(TKPB){std::cout<<"isplan "<<isplan<<std::endl;}
    if(TKPB){std::cout<<"iscylinder "<<iscylinder<<std::endl;}
    if(TKPB){std::cout<<std::endl;}
#endif
  }
  
  return Standard_True;
}

//=======================================================================
//function : KPSameDomain
//purpose  : complete the lists L1,L2 with the shapes of the DS
//           having same domain :
//           L1 = shapes sharing the same domain of L2 shapes
//           L2 = shapes sharing the same domain of L1 shapes
// (L1 contains a face)
//=======================================================================

void TopOpeBRepBuild_Builder::KPSameDomain(TopTools_ListOfShape& L1, TopTools_ListOfShape& L2) const 
{
  Standard_Integer i;
  Standard_Integer nl1 = L1.Extent(), nl2 = L2.Extent();
  
  while ( nl1 > 0 || nl2 > 0 )  {
    
    TopTools_ListIteratorOfListOfShape it1(L1);
    for (i=1 ; i<=nl1; i++) {
      const TopoDS_Shape& S1 = it1.Value();
#ifdef OCCT_DEBUG
//      Standard_Integer iS1 = myDataStructure->Shape(S1);
#endif
      TopTools_ListIteratorOfListOfShape itsd(myDataStructure->SameDomain(S1));
      for (; itsd.More(); itsd.Next() ) {
	const TopoDS_Shape& S2 = itsd.Value();
#ifdef OCCT_DEBUG
//	Standard_Integer iS2 = myDataStructure->Shape(S2);
#endif
	Standard_Boolean found = KPContains(S2,L2);
	if ( ! found ) {
	  L2.Prepend(S2);
	  nl2++;
	}
      }
      it1.Next();
    }
    nl1 = 0;
    
    TopTools_ListIteratorOfListOfShape it2(L2);
    for (i=1 ; i<=nl2; i++) {
      const TopoDS_Shape& S2 = it2.Value();
#ifdef OCCT_DEBUG
//      Standard_Integer iS2 = myDataStructure->Shape(S2);
#endif
      TopTools_ListIteratorOfListOfShape itsd(myDataStructure->SameDomain(S2));
      for (; itsd.More(); itsd.Next() ) {
	const TopoDS_Shape& S1 = itsd.Value();
#ifdef OCCT_DEBUG
//	Standard_Integer iS1 = myDataStructure->Shape(S1);
#endif
	Standard_Boolean found = KPContains(S1,L1);
	if ( ! found ) {
	  L1.Prepend(S1);
	  nl1++;
	}
      }
      it2.Next();
    }
    nl2 = 0;
  }
}

//=======================================================================
//function : KPisdisjsh
//purpose  : S est il un shape traite par le cas particulier "disjoint" 
//=======================================================================

Standard_Integer TopOpeBRepBuild_Builder::KPisdisjsh(const TopoDS_Shape& Sarg) const 
{
  if ( Sarg.IsNull() ) return 0;
  
  TopExp_Explorer ex;
  Standard_Integer nhg;
  
  nhg = KPlhg(Sarg,TopAbs_SOLID);
  if ( nhg != 0 ) return 0;
  
  nhg = KPlhg(Sarg,TopAbs_FACE);
  if ( nhg != 0 ) return 0;
  
  nhg = KPlhg(Sarg,TopAbs_EDGE);
  if ( nhg != 0 ) return 0;
  
  // un seul niveau de HasSameDomain
  Standard_Integer n1,n2;
  TopTools_ListOfShape lshsd;
  
  n1 = KPlhsd(Sarg,TopAbs_SOLID,lshsd);
  if ( n1 ) {
    TopTools_ListIteratorOfListOfShape it(lshsd);
    for(;it.More();it.Next()) {
      const TopoDS_Shape& s = it.Value();
      n2 = KPlhsd(s,TopAbs_FACE);
      if (n2 != 0 ) return 0;
    }
  }
  
  n1 = KPlhsd(Sarg,TopAbs_FACE,lshsd);
  if ( n1 ) {
    TopTools_ListIteratorOfListOfShape it(lshsd);
    for(;it.More();it.Next()) {
      const TopoDS_Shape& s = it.Value();
      n2 = KPlhsd(s,TopAbs_EDGE);
      if (n2 != 0 ) return 0;
    }
  }
  
  return 1;
}

//=======================================================================
//function : KPissososh
//purpose  : detection S = {solid} tous HasSameDomain
//=======================================================================

Standard_Integer TopOpeBRepBuild_Builder::KPissososh(const TopoDS_Shape& Sarg) const 
{
  // que des solides volants (nb total de solides = nb de solides volants)
  Standard_Integer nsol1 = 0; 
  TopExp_Explorer ex1(Sarg,TopAbs_SOLID); 
  for(; ex1.More(); ex1.Next()) nsol1++;
  
  Standard_Integer nsol2 = 0; 
  TopExp_Explorer ex2(Sarg,TopAbs_SOLID,TopAbs_COMPSOLID); 
  for(; ex2.More(); ex2.Next()) nsol2++;
  
  if (nsol1 && (nsol1 != nsol2)) return 0;
  
  // toutes les solides sont HasSameDomain()
  Standard_Integer nhsd = KPlhsd(Sarg,TopAbs_SOLID);
  if (nhsd != nsol1) return 0;
  
  Standard_Integer n; TopExp_Explorer ex;
  
  // pas de shell volant
  n = 0;
  for (ex.Init(Sarg,TopAbs_SHELL,TopAbs_SOLID); ex.More(); ex.Next()) n++;
  if (n) return 0;
  
  // pas de face volant
  n = 0;
  for (ex.Init(Sarg,TopAbs_FACE,TopAbs_SHELL); ex.More(); ex.Next()) n++;
  if (n) return 0;
  
  // pas d'edge volant
  n = 0;
  for (ex.Init(Sarg,TopAbs_EDGE,TopAbs_WIRE); ex.More(); ex.Next()) n++;
  if (n) return 0;
  
  // pas de vertex volant
  n = 0; 
  for (ex.Init(Sarg,TopAbs_VERTEX,TopAbs_EDGE); ex.More(); ex.Next()) n++;
  if (n) return 0;
  
  return 1;
}

//=======================================================================
//function : KPisfafash
//purpose  : detection S = {face} toutes HasSameDomain
//=======================================================================

Standard_Integer TopOpeBRepBuild_Builder::KPisfafash(const TopoDS_Shape& Sarg) const 
{
  // il n'y a que des faces volantes (nb total de faces = nb de faces volantes)
  Standard_Integer nfac1 = 0; 
  TopExp_Explorer ex1(Sarg,TopAbs_FACE); 
  for(; ex1.More(); ex1.Next()) nfac1++;
  
  Standard_Integer nfac2 = 0; 
  TopExp_Explorer ex2(Sarg,TopAbs_FACE,TopAbs_SHELL); 
  for(; ex2.More(); ex2.Next()) nfac2++;
  
  if (nfac1 && (nfac1 != nfac2)) return 0;
  
  // toutes les faces sont HasSameDomain()
  Standard_Integer nhsd = KPlhsd(Sarg,TopAbs_FACE);
  if (nhsd != nfac1) return 0;
  
  Standard_Integer n; TopExp_Explorer ex;
  
  // pas de wire volant
  n = 0;
  for (ex.Init(Sarg,TopAbs_WIRE,TopAbs_FACE); ex.More(); ex.Next()) n++;
  if (n) return 0;
  
  // pas d'edge volant
  n = 0;
  for (ex.Init(Sarg,TopAbs_EDGE,TopAbs_WIRE); ex.More(); ex.Next()) n++;
  if (n) return 0;
  
  // pas de vertex volant
  n = 0; 
  for (ex.Init(Sarg,TopAbs_VERTEX,TopAbs_EDGE); ex.More(); ex.Next()) n++;
  if (n) return 0;
  
  return 1;
}

//=======================================================================
//function : KPiskoletgeanalyse
//purpose  : 
//=======================================================================

void TopOpeBRepBuild_Builder::KPiskoletgeanalyse(const TopOpeBRepDS_Config config2, 
						 const TopAbs_State Stsol1, const TopAbs_State Stsol2, 
						 Standard_Integer& ires) const 
{
  // -----------------------------------------------------------------------------
  // prequesitory :  (nplhsd1 == 1) || (nplhsd2 == 1)
  // -------------   <plsdmi> has all interferences Ii = (T, G=edge of outerw1
  //                                                         ||edge of outerw2, S)
  // -----------------------------------------------------------------------------

  ires = RESUNDEF;

  Standard_Boolean SameOriented = (config2 == TopOpeBRepDS_SAMEORIENTED);
  Standard_Boolean DiffOriented = (config2 == TopOpeBRepDS_DIFFORIENTED);

//  Standard_Boolean com = Opecom();
//  Standard_Boolean c12 = Opec12();
//  Standard_Boolean c21 = Opec21();
//  Standard_Boolean fus = Opefus();

  if (DiffOriented) {
    if (Stsol1 == TopAbs_IN && Stsol2 == TopAbs_IN) 
//      if (com) ires = RESNULL;
     ires = RESNULL; 

    if (Stsol1 == TopAbs_OUT && Stsol2 == TopAbs_IN) {
//      if (c12) ires = RESSHAPE1; // rank(sol1) == 1 && rank(sol2) == 2
//      if (c21) ires = RESSHAPE2; // rank(sol1) == 2 && rank(sol2) == 1
      ires = RESSHAPE1;
    }

    if (Stsol2 == TopAbs_OUT && Stsol1 == TopAbs_IN) {
//      if (c12) ires = RESSHAPE2; // rank(sol2) == 1 && rank(sol1) == 2
//      if (c21) ires = RESSHAPE1; // rank(sol2) == 2 && rank(sol1) == 1
      ires = RESSHAPE2;
    }

    if (Stsol1 == TopAbs_OUT && Stsol2 == TopAbs_OUT) 
//      if (fus) ires = RESNEWSOL;
      ires = RESNEWSOL;
  } // DiffOriented

  if (SameOriented) {
    // ==============================
    // PREQUESITORY :sol1 is IN sol2
    // ==============================

    if (Stsol1 == TopAbs_IN && Stsol2 == TopAbs_IN) 
//      if (com) ires = RESSHAPE1;
      ires = RESSHAPE1;

    if (Stsol1 == TopAbs_OUT && Stsol2 == TopAbs_IN) {
//      if (c12) ires = RESNULL; // rank(sol1) == 1 && rank(sol2) == 2
//      if (c21) ires = RESNEWSOL; // rank(sol1) == 2 && rank(sol2) == 1
      ires = RESNULL;
    }

    if (Stsol2 == TopAbs_OUT && Stsol1 == TopAbs_IN) {
//      if (c12) ires = RESNULL; // rank(sol2) == 1 && rank(sol1) == 2
//      if (c21) ires = RESNEWSOL; // rank(sol2) == 2 && rank(sol1) == 1
      ires = RESNEWSOL;
    }

    if (Stsol1 == TopAbs_OUT && Stsol2 == TopAbs_OUT) 
//      if (fus) ires = RESSHAPE2;
      ires = RESSHAPE2;
  } // SameOriented

#ifdef OCCT_DEBUG
  Standard_Boolean TKPB = TopOpeBRepBuild_GettraceKPB();
  if (TKPB) std::cout<<"ires = "<<ires<<std::endl;
#endif
}


//=======================================================================
//function : KPisdisjanalyse
//purpose  : 
//=======================================================================

void TopOpeBRepBuild_Builder::KPisdisjanalyse(const TopAbs_State Stsol1, const TopAbs_State  Stsol2,
					      Standard_Integer& ires,Standard_Integer& icla1,Standard_Integer& icla2) const 
{
  ires = RESUNDEF; icla1 = icla2 = SHEUNDEF;
  
  if      (Opefus())  {
    if      (Stsol1 == TopAbs_OUT && Stsol2 == TopAbs_OUT) {
      ires = RESSHAPE12; icla1 = icla2 = SHEAUCU; //--
    }
    else if (Stsol1 == TopAbs_OUT && Stsol2 == TopAbs_IN ) {
      ires = RESNEWSHA1; icla1 = icla2 = SHECLASAUTR; //--
    }
    else if (Stsol1 == TopAbs_IN  && Stsol2 == TopAbs_OUT) {
      ires = RESNEWSHA2; icla1 = icla2 = SHECLASAUTR; //--
    }
  }
  else if (Opec12()) {
    if      (Stsol1 == TopAbs_OUT && Stsol2 == TopAbs_OUT) {
      ires = RESSHAPE1; icla1 = SHEGARDTOUS; icla2 = SHEAUCU; //--
    }
    else if (Stsol1 == TopAbs_OUT && Stsol2 == TopAbs_IN ) {
      ires = RESNEWSHA1; icla1 = SHECLASAUTR; icla2 = SHEGARDCOUR; //--
    }
    else if (Stsol1 == TopAbs_IN  && Stsol2 == TopAbs_OUT) {
      ires = RESNULL; icla1 = icla2 = SHEAUCU; //--
    }
  }
  else if (Opec21()) {
    if      (Stsol1 == TopAbs_OUT && Stsol2 == TopAbs_OUT) {
      ires = RESSHAPE2; icla1 = SHEAUCU; icla2 = SHEGARDTOUS; //--
    }
    else if (Stsol1 == TopAbs_OUT && Stsol2 == TopAbs_IN ) {
      ires = RESNULL; icla1 = icla2 = SHEAUCU; //--
    }
    else if (Stsol1 == TopAbs_IN  && Stsol2 == TopAbs_OUT) {
      ires = RESNEWSHA2; icla1 = SHEGARDCOUR; icla2 = SHECLASAUTR; //--
    }
  }
  else if (Opecom()) {
    if (Stsol1 == TopAbs_OUT && Stsol2 == TopAbs_OUT) { 
      ires = RESNULL; icla1 = icla2 = SHEAUCU; //--
    }
    else if (Stsol1 == TopAbs_OUT && Stsol2 == TopAbs_IN ) {
      ires = RESNEWSHA2; icla1 = SHECLASAUTR; icla2 = SHEGARDAUTR; //--
    }
    else if (Stsol1 == TopAbs_IN  && Stsol2 == TopAbs_OUT) {
      ires = RESNEWSHA1; icla1 = SHEGARDAUTR; icla2 = SHECLASAUTR; //--
    }
  }
  
#ifdef OCCT_DEBUG
  Standard_Boolean TKPB = TopOpeBRepBuild_GettraceKPB();
  if (TKPB) std::cout<<"ires = "<<ires<<" icla1 "<<icla1<<" icla2 "<<icla2<<std::endl;
#endif
}

//=======================================================================
//function : KPls (class method)
//purpose  : 
// KPls --> nb des subsshapes <T> de <S>
//=======================================================================

Standard_Integer TopOpeBRepBuild_Builder::KPls(const TopoDS_Shape& S,const TopAbs_ShapeEnum T)
{
  TopTools_ListOfShape L;
  Standard_Integer n = KPls(S,T,L);
  return n;
}

//=======================================================================
//function : KPls (class method)
//purpose  : 
// KPls --> nb + liste des subsshapes <T> de <S>
//=======================================================================

Standard_Integer TopOpeBRepBuild_Builder::KPls(const TopoDS_Shape& S, const TopAbs_ShapeEnum T, TopTools_ListOfShape& L)
{
  Standard_Integer n = 0;
  L.Clear();
  
  TopExp_Explorer ex;
  for (ex.Init(S,T); ex.More(); ex.Next()) {
//  for (TopExp_Explorer ex(S,T); ex.More(); ex.Next()) {
    const TopoDS_Shape& s = ex.Current();
    n++;
    L.Append(s);
  }
  
  return n;
}

//=======================================================================
//function : KPclassF (class method)
//purpose  : 
// KPclassF : classification F1 par rapport a F2
// F1 et F2 ne partagent aucune arete
// F1 et F2 sont SameDomain
//=======================================================================

TopAbs_State TopOpeBRepBuild_Builder::KPclassF(const TopoDS_Shape& F1,const TopoDS_Shape& F2)
{
  if (F1.IsNull()) return TopAbs_UNKNOWN;
  if (F2.IsNull()) return TopAbs_UNKNOWN;
  
  TopoDS_Face F1F = TopoDS::Face(F1); F1F.Orientation(TopAbs_FORWARD);
  TopoDS_Face F2F = TopoDS::Face(F2); F2F.Orientation(TopAbs_FORWARD);
  
  TopTools_ListOfShape le1;
  Standard_Integer ne1 = KPls(F1F,TopAbs_EDGE,le1);
  if ( ne1 == 0 ) return TopAbs_UNKNOWN;
  const TopoDS_Edge& e1 = TopoDS::Edge(le1.First());
  
  Standard_Integer isamdom = 1;
  TopAbs_State St1 = TopAbs_UNKNOWN;
  St1 = myShapeClassifier.StateShapeShape(e1,F2F,isamdom);
  return St1;
}

//=======================================================================
//function : KPclassFF (class method)
//purpose  : 
// classifie F1/F2 --> etats des faces l'une par rapport a l'autre
//=======================================================================

void TopOpeBRepBuild_Builder::KPclassFF(const TopoDS_Shape& F1,const TopoDS_Shape& F2,TopAbs_State& St1,TopAbs_State& St2)
{
  St1 = KPclassF(F1,F2);
  St2 = KPclassF(F2,F1);
  
#ifdef OCCT_DEBUG
  if (TopOpeBRepBuild_GettraceKPB()) { 
    std::cout<<"Stf1 ";TopAbs::Print(St1,std::cout); std::cout<<" ";
    std::cout<<"Stf2 ";TopAbs::Print(St2,std::cout); std::cout<<std::endl;
  }
#endif
}

//=======================================================================
//function : KPiskoleFF
//purpose  : 
// classifie F1/F2 --> etats des faces l'une par rapport a l'autre
// --> True si la configutration topologique correspond au cas "iskole".
//=======================================================================

Standard_Boolean TopOpeBRepBuild_Builder::KPiskoleFF(const TopoDS_Shape& F1,const TopoDS_Shape& F2,TopAbs_State& St1,TopAbs_State& St2)
{
#ifdef OCCT_DEBUG
  Standard_Integer iF1; 
  Standard_Boolean tSPS1 = GtraceSPS(F1,iF1);
  Standard_Integer iF2; 
  Standard_Boolean tSPS2 = GtraceSPS(F2,iF2);
  if(tSPS1) { GdumpSHA(F1, (char *) "KPiskoleFF ");std::cout<<std::endl; }
  if(tSPS2) { GdumpSHA(F2, (char *) "KPiskoleFF ");std::cout<<std::endl; }
#endif
  
  KPclassFF(F1,F2,St1,St2);
  Standard_Boolean st1ok = (St1 == TopAbs_OUT || St1 == TopAbs_IN);
  Standard_Boolean st2ok = (St2 == TopAbs_OUT || St2 == TopAbs_IN);
  
  if ( !st1ok ) return Standard_False;
  if ( !st2ok ) return Standard_False;
  Standard_Boolean stok = (St1 != St2);
  if ( !stok ) return Standard_False;
  return Standard_True;
}

//=======================================================================
//function : KPContains (class method)
//purpose  : returns True if S is in the list L.
//=======================================================================

Standard_Boolean TopOpeBRepBuild_Builder::KPContains(const TopoDS_Shape& S,const TopTools_ListOfShape& L) 
{
  for (TopTools_ListIteratorOfListOfShape it(L); it.More(); it.Next() ) {
    const TopoDS_Shape& SL = it.Value();
    Standard_Boolean issame = SL.IsSame(S);
    if ( issame ) return Standard_True;
  }
  return Standard_False;
} // KPContains

//=======================================================================
//function : KPreturn (class method)
//purpose  : 
//=======================================================================

Standard_Integer TopOpeBRepBuild_Builder::KPreturn(const Standard_Integer b)
{
#ifdef OCCT_DEBUG
  if (TopOpeBRepBuild_GettraceKPB()) {
    std::cout<<"--- IsKPart "<<b;
    if ( b == 1 ) std::cout<<" iskole";
    if ( b == 2 ) std::cout<<" isdisj";
    if ( b == 3 ) std::cout<<" isfafa";
    std::cout<<" ---"<<std::endl;
  }
#endif
  return b;
}

//modified by NIZHNY-MKK  Tue May 23 09:48:47 2000.BEGIN
//======================================================================================================
// static function : LocalKPisdisjanalyse
// purpose: 
//======================================================================================================
static void LocalKPisdisjanalyse(const TopAbs_State Stsol1, const TopAbs_State  Stsol2,
				 const TopOpeBRepBuild_KPart_Operation& theOperation,
				 Standard_Integer& ires, Standard_Integer& icla1, Standard_Integer& icla2) {
  ires = RESUNDEF; icla1 = icla2 = SHEUNDEF;

  switch(theOperation) {
  case TopOpeBRepBuild_KPart_Operation_Fuse: {
    if      (Stsol1 == TopAbs_OUT && Stsol2 == TopAbs_OUT) {
      ires = RESSHAPE12; icla1 = icla2 = SHEAUCU; //--
    }
    else if (Stsol1 == TopAbs_OUT && Stsol2 == TopAbs_IN ) {
      ires = RESNEWSHA1; icla1 = icla2 = SHECLASAUTR; //--
    }
    else if (Stsol1 == TopAbs_IN  && Stsol2 == TopAbs_OUT) {
      ires = RESNEWSHA2; icla1 = icla2 = SHECLASAUTR; //--
    }
    break;
  }
  case TopOpeBRepBuild_KPart_Operation_Cut12: {
    if      (Stsol1 == TopAbs_OUT && Stsol2 == TopAbs_OUT) {
      ires = RESSHAPE1; icla1 = SHEGARDTOUS; icla2 = SHEAUCU; //--
    }
    else if (Stsol1 == TopAbs_OUT && Stsol2 == TopAbs_IN ) {
      ires = RESNEWSHA1; icla1 = SHECLASAUTR; icla2 = SHEGARDCOUR; //--
    }
    else if (Stsol1 == TopAbs_IN  && Stsol2 == TopAbs_OUT) {
      ires = RESNULL; icla1 = icla2 = SHEAUCU; //--
    }
    break;
  }
  case TopOpeBRepBuild_KPart_Operation_Cut21: {
    if (Stsol1 == TopAbs_OUT && Stsol2 == TopAbs_OUT) {
      ires = RESSHAPE2; icla1 = SHEAUCU; icla2 = SHEGARDTOUS; //--
    }
    else if (Stsol1 == TopAbs_OUT && Stsol2 == TopAbs_IN ) {
      ires = RESNULL; icla1 = icla2 = SHEAUCU; //--
    }
    else if (Stsol1 == TopAbs_IN  && Stsol2 == TopAbs_OUT) {
      ires = RESNEWSHA2; icla1 = SHEGARDCOUR; icla2 = SHECLASAUTR; //--
    }
    break;
  }
  case TopOpeBRepBuild_KPart_Operation_Common: {
    if (Stsol1 == TopAbs_OUT && Stsol2 == TopAbs_OUT) { 
      ires = RESNULL; icla1 = icla2 = SHEAUCU; //--
    }
    else if (Stsol1 == TopAbs_OUT && Stsol2 == TopAbs_IN ) {
      ires = RESNEWSHA2; icla1 = SHECLASAUTR; icla2 = SHEGARDAUTR; //--
    }
    else if (Stsol1 == TopAbs_IN  && Stsol2 == TopAbs_OUT) {
      ires = RESNEWSHA1; icla1 = SHEGARDAUTR; icla2 = SHECLASAUTR; //--
    }
    break;
  }
  default: {
    std::cout << "Warning: given operation is unknown"   << std::endl;
    break;
  }
  } //end switch
  
}

//======================================================================================================
// static function : BuildNewSolid
// purpose: Build new solid based on sol1 and sol2 according to the states
//======================================================================================================
static TopoDS_Solid BuildNewSolid(const TopoDS_Solid& sol1, 
				  const TopoDS_Solid& sol2, 
				  const TopAbs_State stsol1, 
				  const TopAbs_State stsol2,
				  const Standard_Integer ires, 
				  const Standard_Integer icla1, 
				  const Standard_Integer icla2,
				  const TopAbs_State theState1,
				  const TopAbs_State theState2) {

  TopOpeBRepTool_ShapeClassifier aShapeClassifier;
  TopoDS_Shape Snull;  
  TopTools_MapOfShape isdisjmap;
  TopOpeBRepDS_BuildTool aBuildTool;
  TopoDS_Solid sol;
  TopAbs_State solstate,shastatetoadd;
  TopoDS_Shell outsha;
  Standard_Integer icla;
  TopoDS_Solid othersol;
  TopoDS_Shell outsha1 = BRepClass3d::OuterShell(sol1);
  TopoDS_Shell outsha2 = BRepClass3d::OuterShell(sol2);

  
  TopoDS_Solid newsol;
  aBuildTool.MakeSolid(newsol);
  if (ires == RESNEWSHA1) {
    if ( ! isdisjmap.Contains(outsha1) ) {
      isdisjmap.Add(outsha1);
      aBuildTool.AddSolidShell(newsol,outsha1);
    }
  }
  else if (ires == RESNEWSHA2) {
    if ( ! isdisjmap.Contains(outsha2) ) {
      isdisjmap.Add(outsha2);
      aBuildTool.AddSolidShell(newsol,outsha2);
    }
  }
  
  sol = sol1;
  solstate = stsol1; 
  shastatetoadd = theState1;
  outsha = outsha1;
  icla = icla1;
  othersol = sol2;
  
  {
    TopOpeBRepTool_ShapeExplorer exsha;
    for (exsha.Init(sol,TopAbs_SHELL); exsha.More(); exsha.Next()) {
      const TopoDS_Shell& shacur = TopoDS::Shell(exsha.Current());
      Standard_Boolean isoutsha = shacur.IsEqual(outsha);
      
      Standard_Boolean garde = Standard_True;
      if      (icla==SHEAUCU) garde = Standard_False;
      else if (icla==SHEGARDAUTR || icla==SHECLASAUTR) garde = ! isoutsha;
      if (!garde) continue;
      
      Standard_Boolean add = Standard_False;
      if      ( icla==SHEGARDCOUR ) add = Standard_True;
      else if ( icla==SHEGARDAUTR ) add = Standard_True;
      else if ( icla==SHEGARDTOUS ) add = Standard_True;
      else if ( icla==SHECLASAUTR ) {
	TopAbs_State state = aShapeClassifier.StateShapeShape(shacur,Snull,othersol);
	add = (state == shastatetoadd);
      }
      if (add) {
	TopoDS_Shell shaori = shacur;
	Standard_Boolean r = (solstate == TopAbs_IN);
	if (r) shaori.Complement();
	if ( ! isdisjmap.Contains(shaori) ) {
	  isdisjmap.Add(shaori);
	  aBuildTool.AddSolidShell(newsol,shaori);
	}
      }
    }
  } //end block1
  
  sol = sol2; 
  solstate = stsol2;
  shastatetoadd = theState2;
  outsha = outsha2;
  icla = icla2;
  othersol = sol1;
  
  {
    TopOpeBRepTool_ShapeExplorer exsha;
    for (exsha.Init(sol,TopAbs_SHELL); exsha.More(); exsha.Next()) {
      const TopoDS_Shell& shacur = TopoDS::Shell(exsha.Current());
      Standard_Boolean isoutsha = shacur.IsEqual(outsha);
      
      Standard_Boolean garde = Standard_True;
      if      (icla==SHEAUCU) garde = Standard_False;
      else if (icla==SHEGARDAUTR || icla==SHECLASAUTR) garde = ! isoutsha;
      if (!garde) continue;
      
      Standard_Boolean add = Standard_False;
      if      ( icla==SHEGARDCOUR ) add = Standard_True;
      else if ( icla==SHEGARDAUTR ) add = Standard_True;
      else if ( icla==SHEGARDTOUS ) add = Standard_True;
      else if ( icla==SHECLASAUTR ) {
	TopAbs_State state = aShapeClassifier.StateShapeShape(shacur,Snull,othersol);
	add = (state == shastatetoadd);
      }
      if (add) {
	TopoDS_Shell shaori = shacur;
	Standard_Boolean r = (solstate == TopAbs_IN);
	if (r) shaori.Complement();
	aBuildTool.AddSolidShell(newsol,shaori);
      }
    }
  } //end block2
  return newsol;
}


//======================================================================================================
// static function : disjPerformFuse
// purpose: is needed in case of KPart==2
// attention: theMapOfResult is cleared before computations
//======================================================================================================
static Standard_Boolean disjPerformFuse(const TopTools_IndexedMapOfShape& theMapOfSolid1, 
					const TopTools_IndexedMapOfShape& theMapOfSolid2,
					TopTools_IndexedMapOfShape& theMapOfResult) {

  theMapOfResult.Clear();

  TopTools_IndexedMapOfShape aMapOfSolid;
  aMapOfSolid = theMapOfSolid1;
  Standard_Integer i=1;
  for(i=1; i<=theMapOfSolid2.Extent(); i++) {
    aMapOfSolid.Add(theMapOfSolid2(i));
  }
  
  TopoDS_Solid sol1; TopoDS_Shell outsha1;
  TopoDS_Solid sol2; TopoDS_Shell outsha2;
  TopOpeBRepTool_ShapeClassifier aShapeClassifier;
  TopoDS_Shape Snull;
  TopTools_MapOfShape aMapOfUsedSolids;  
  TopoDS_Solid acurrentsolid;
  Standard_Integer aMaxNumberOfIterations = aMapOfSolid.Extent()*aMapOfSolid.Extent();

  for(i=1; i <=aMapOfSolid.Extent(); i++) {
    const TopoDS_Shape& localshape1 = aMapOfSolid(i);
    if(localshape1.ShapeType()!=TopAbs_SOLID)
      return Standard_False;
    
    sol1 = TopoDS::Solid(localshape1);
    acurrentsolid = sol1;
    if(aMapOfUsedSolids.Contains(localshape1))
      continue;
    
    Standard_Integer j=1, acheckiterator=0;
    while(j<=aMapOfSolid.Extent() && (acheckiterator <= aMaxNumberOfIterations)) {
      acheckiterator++;
      if(j==i) {
	j++;
	continue;
      }
      const TopoDS_Shape& localshape2 = aMapOfSolid(j);
      if(localshape2.ShapeType()!=TopAbs_SOLID)
	return Standard_False;
      
      j++; // increase iterator
      
      if(aMapOfUsedSolids.Contains(localshape2)) {
	continue;
      }
      sol2 = TopoDS::Solid(localshape2);
      outsha2 = BRepClass3d::OuterShell(sol2);
      
      outsha1 = BRepClass3d::OuterShell(acurrentsolid);
      TopAbs_State stsol1 = aShapeClassifier.StateShapeShape(outsha1,Snull,sol2);
      TopAbs_State stsol2 = aShapeClassifier.StateShapeShape(outsha2,Snull,acurrentsolid);
      Standard_Integer ires=RESUNDEF, icla1=SHEUNDEF, icla2=SHEUNDEF;
      LocalKPisdisjanalyse(stsol1, stsol2, TopOpeBRepBuild_KPart_Operation_Fuse, ires, icla1, icla2);
      if (ires == RESUNDEF || icla1 == SHEUNDEF || icla2 == SHEUNDEF || ires == RESNULL) {
	std::cout << "Warning: disjPerformFuse: can not determine solid's states"  << std::endl;
	continue;
      }
      if(ires == RESSHAPE12)
	continue;

      if(ires==RESNEWSHA1 || ires==RESNEWSHA2) {
	TopoDS_Solid newsol = BuildNewSolid(acurrentsolid, sol2, stsol1, stsol2, ires, icla1, icla2, TopAbs_OUT, TopAbs_OUT);
	j=1; // iterate on all solids again except already used (very dengerous method)
	acurrentsolid = newsol;
	aMapOfUsedSolids.Add(localshape2);
	if(acurrentsolid.IsNull())
	  return Standard_False;
      }
    } //end while(j)
    if(acheckiterator > aMaxNumberOfIterations) {
      std::cout << "disjPerformFuse: programming error"  << std::endl;
      return Standard_False;
    }
    theMapOfResult.Add(acurrentsolid);
  } //end for(i)

  return Standard_True;
}

//======================================================================================================
// static function : disjPerformCommon
// purpose: is needed in case of KPart==2
// attention: theMapOfResult is cleared before computations
//======================================================================================================
static Standard_Boolean disjPerformCommon(const TopTools_IndexedMapOfShape& theMapOfSolid1, 
					  const TopTools_IndexedMapOfShape& theMapOfSolid2,					
					  TopTools_IndexedMapOfShape& theMapOfResult) {

  TopoDS_Solid sol1; TopoDS_Shell outsha1;
  TopoDS_Solid sol2; TopoDS_Shell outsha2;
  TopOpeBRepTool_ShapeClassifier aShapeClassifier;
  TopoDS_Shape Snull;
  TopTools_IndexedMapOfShape aMapOfSeparatedSolid1, aMapOfSeparatedSolid2, aMapOfCommonOfCouple;
  theMapOfResult.Clear();

  disjPerformFuse(theMapOfSolid1, theMapOfSolid1, aMapOfSeparatedSolid1);
  disjPerformFuse(theMapOfSolid2, theMapOfSolid2, aMapOfSeparatedSolid2);
  //   Now common parts of all couples of solids are different
  for(Standard_Integer i=1; i <=aMapOfSeparatedSolid1.Extent(); i++) {
    const TopoDS_Shape& localshape1 = aMapOfSeparatedSolid1(i);
    if(localshape1.ShapeType()!=TopAbs_SOLID)
      return Standard_False;    
    sol1 = TopoDS::Solid(localshape1);
    outsha1 = BRepClass3d::OuterShell(sol1);

    for(Standard_Integer j=1; j<=aMapOfSeparatedSolid2.Extent(); j++) {
      const TopoDS_Shape& localshape2 = aMapOfSeparatedSolid2(j);
      if(localshape2.ShapeType()!=TopAbs_SOLID)
	return Standard_False;
      
      sol2 = TopoDS::Solid(localshape2);
      outsha2 = BRepClass3d::OuterShell(sol2);
      TopAbs_State stsol1 = aShapeClassifier.StateShapeShape(outsha1,Snull,sol2);
      TopAbs_State stsol2 = aShapeClassifier.StateShapeShape(outsha2,Snull,sol1);
      Standard_Integer ires=RESUNDEF, icla1=SHEUNDEF, icla2=SHEUNDEF;

      LocalKPisdisjanalyse(stsol1, stsol2, TopOpeBRepBuild_KPart_Operation_Common, ires, icla1, icla2);
      if (ires == RESUNDEF || icla1 == SHEUNDEF || icla2 == SHEUNDEF) {
	std::cout << "Warning: disjPerformCommon: can not determine solid's states"  << std::endl;
	continue;
      }      
      switch (ires) {
      case RESNULL: {
	continue;
      }
      case RESSHAPE12 : {
	aMapOfCommonOfCouple.Add(sol1);
	aMapOfCommonOfCouple.Add(sol2);
	continue;
      }
      case RESSHAPE1 : {
	aMapOfCommonOfCouple.Add(sol1);
	continue;
      }
      case RESSHAPE2 : {
	aMapOfCommonOfCouple.Add(sol2);
	break;
      }
      case RESNEWSHA1:
      case RESNEWSHA2: {
	TopoDS_Solid newsol = BuildNewSolid(sol1, sol2, stsol1, stsol2, ires, icla1, icla2, TopAbs_IN, TopAbs_IN);
	aMapOfCommonOfCouple.Add(newsol);	
	break;
      }
      default: continue;      
      }//end switch
    } //end for(j)
  } //end for(i)

  disjPerformFuse(aMapOfCommonOfCouple, aMapOfCommonOfCouple, theMapOfResult);
  return Standard_True;
}

//======================================================================================================
// static function : disjPerformCut
// purpose: is needed in case of KPart==2
// attention: theMapOfResult is cleared before computations
//======================================================================================================
static Standard_Boolean disjPerformCut(const TopTools_IndexedMapOfShape& theMapOfSolid1, 
				       const TopTools_IndexedMapOfShape& theMapOfSolid2,					
				       TopTools_IndexedMapOfShape& theMapOfResult) {
  TopoDS_Solid sol1; TopoDS_Shell outsha1;
  TopoDS_Solid sol2; TopoDS_Shell outsha2;
  TopOpeBRepTool_ShapeClassifier aShapeClassifier;
  TopoDS_Shape Snull;
  TopoDS_Solid acurrentsolid;
  TopTools_IndexedMapOfShape aMapOfSeparatedSolid1, aMapOfSeparatedSolid2;

  theMapOfResult.Clear();

  disjPerformFuse(theMapOfSolid1, theMapOfSolid1, aMapOfSeparatedSolid1);
  disjPerformFuse(theMapOfSolid2, theMapOfSolid2, aMapOfSeparatedSolid2);

  for(Standard_Integer i=1; i<= aMapOfSeparatedSolid1.Extent(); i++) {
    const TopoDS_Shape& localshape1 = aMapOfSeparatedSolid1(i);
    if(localshape1.ShapeType()!=TopAbs_SOLID)
      return Standard_False;    
    sol1 = TopoDS::Solid(localshape1);
    acurrentsolid = sol1;

    Standard_Boolean NullResult = Standard_False;

    for(Standard_Integer j=1; j<=aMapOfSeparatedSolid2.Extent() && !NullResult; j++) {
      const TopoDS_Shape& localshape2 = aMapOfSeparatedSolid2(j);
      if(localshape2.ShapeType()!=TopAbs_SOLID)
	return Standard_False;      
      sol2 = TopoDS::Solid(localshape2);
      outsha2 = BRepClass3d::OuterShell(sol2);
      outsha1 = BRepClass3d::OuterShell(acurrentsolid);
      TopAbs_State stsol1 = aShapeClassifier.StateShapeShape(outsha1,Snull,sol2);
      TopAbs_State stsol2 = aShapeClassifier.StateShapeShape(outsha2,Snull,acurrentsolid);
      Standard_Integer ires=RESUNDEF, icla1=SHEUNDEF, icla2=SHEUNDEF;

      LocalKPisdisjanalyse(stsol1, stsol2, TopOpeBRepBuild_KPart_Operation_Cut12, ires, icla1, icla2);
      if (ires == RESUNDEF || icla1 == SHEUNDEF || icla2 == SHEUNDEF) {
	std::cout << "Warning: disjPerformCut: can not determine solid's states"  << std::endl;
	continue;
      }
      switch (ires) {
      case RESNULL: {
	NullResult=Standard_True;
	break;
      }
      case RESSHAPE12 : {
	NullResult=Standard_True;
	break;
      }
      case RESSHAPE1 : {
	NullResult=Standard_False;
	break;
      }
      case RESSHAPE2 : {
	NullResult=Standard_True;
	break;
      }
      case RESNEWSHA1:
      case RESNEWSHA2: {
	TopoDS_Solid newsol = BuildNewSolid(acurrentsolid, sol2, stsol1, stsol2, ires, icla1, icla2, TopAbs_OUT, TopAbs_IN);
	acurrentsolid = newsol;
	break;
      }
      default: continue;      
      }//end switch
    } //end for(j)
    if(!NullResult) {
      if(acurrentsolid.IsNull())
	return Standard_False;
      theMapOfResult.Add(acurrentsolid);
    }
  } //end for(i)
  return Standard_True;
}
//modified by NIZHNY-MKK  Tue May 23 09:49:03 2000.END
