occt/src/TopOpeBRepBuild/TopOpeBRepBuild_keep.cxx

// Created on: 1996-03-07
// Created by: Jean Yves LEBEY
// 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 <TopOpeBRepBuild_GTopo.hxx>
#include <TopOpeBRepBuild_HBuilder.hxx>
#include <TopOpeBRepBuild_PaveSet.hxx>
#include <TopOpeBRepDS_HDataStructure.hxx>

#ifdef OCCT_DEBUG
extern Standard_Integer GLOBAL_iexE;
extern Standard_Integer GLOBAL_iexF;
Standard_Boolean STATIC_trace_iexE = Standard_False;
Standard_Boolean STATIC_trace_iexF = Standard_False;
Standard_EXPORT void debkeep(const Standard_Integer i) {std::cout<<"++ debkeep "<<i<<std::endl;}
#endif

//=======================================================================
//function : GKeepShape
//purpose  : 
// compute position of shape <S> / shapes of list <LSclass>
// return true if LS is not empty && (position == TB)
// (return always true if LS is empty)
//=======================================================================
Standard_Boolean TopOpeBRepBuild_Builder::GKeepShape
(const TopoDS_Shape& S, const TopTools_ListOfShape& LSclass, const TopAbs_State TB)
{ 
  TopAbs_State pos;
  return GKeepShape1(S,LSclass,TB,pos);
}

Standard_Boolean TopOpeBRepBuild_Builder::GKeepShape1
(const TopoDS_Shape& S, const TopTools_ListOfShape& LSclass, const TopAbs_State TB,
 TopAbs_State& pos)
{ 
  Standard_Boolean keep = Standard_True;
  pos = TopAbs_UNKNOWN;
  Standard_Boolean toclassify = Standard_True;
  if (S.ShapeType() == TopAbs_FACE &&
      !myDataStructure->HasShape(S) &&
      myClassifyDef) {
    toclassify = myClassifyVal;
  }
  
  toclassify = (toclassify && !LSclass.IsEmpty());
  if (toclassify) {
    pos = ShapePosition(S,LSclass);
    if ( pos != TB ) keep = Standard_False;
  }
#ifdef OCCT_DEBUG
  Standard_Integer iS; Standard_Boolean tSPS = GtraceSPS(S,iS);
  Standard_Integer iface = 0, isoli = 0; 
  Standard_Boolean tSPSface = Standard_False;
  Standard_Boolean tSPSsoli = Standard_False;
  if ( S.ShapeType() == TopAbs_EDGE ) {
    tSPSface = GtraceSPS(myFaceToFill,iface);
    tSPSface = tSPSface && STATIC_trace_iexE;
  }
  else if ( S.ShapeType() == TopAbs_FACE ) {
    tSPSsoli = GtraceSPS(mySolidToFill,isoli);
    tSPSsoli = tSPSsoli && STATIC_trace_iexF;
  }
  
  Standard_Boolean tr = tSPS || tSPSface || tSPSsoli;
  if(tr){
    if (tSPS) GdumpSHA(S);
    else if (tSPSface) std::cout<<"EDGE exploration "<<GLOBAL_iexE;
    else if (tSPSsoli) std::cout<<"FACE exploration "<<GLOBAL_iexF;
    if(keep)std::cout<<" is kept";else std::cout<<" is NOT kept";
    std::cout<<" ";TopAbs::Print(TB,std::cout);std::cout<<" / ";
    if(LSclass.IsEmpty())std::cout<<"empty list";else GdumpLS(LSclass);std::cout<<std::endl;
    std::cout.flush();
  }
#endif
  
  return keep;
}

//=======================================================================
//function : GKeepShapes
//purpose  : 
// select shapes to keep from list Lin located TB compared with LSclass shapes
// selected shapes are stored in list Lou
// (apply GKeepShape on Lin shapes)
// Lou is not cleared
// S is used for trace only
//=======================================================================
void TopOpeBRepBuild_Builder::GKeepShapes
#ifdef OCCT_DEBUG
(const TopoDS_Shape& S,
#else
(const TopoDS_Shape&,
#endif
 const TopTools_ListOfShape& LSclass,const TopAbs_State TB,const TopTools_ListOfShape& Lin,TopTools_ListOfShape& Lou)
{
#ifdef OCCT_DEBUG
  Standard_Integer iS; Standard_Boolean tSPS = GtraceSPS(S,iS);
  if (tSPS) debkeep(iS);
#endif
  
#ifdef OCCT_DEBUG
  Standard_Integer n = 0;
#endif
  TopTools_ListIteratorOfListOfShape it(Lin);
  for (; it.More(); it.Next() ) {
    const TopoDS_Shape& SL = it.Value();
    
    Standard_Boolean keep = Standard_True;
    if ( ! LSclass.IsEmpty() ) {
      TopAbs_State pos = ShapePosition(SL,LSclass);
      if ( pos != TB ) keep = Standard_False;
    }
    
#ifdef OCCT_DEBUG
    TopAbs_ShapeEnum t = SL.ShapeType();
    if(tSPS){std::cout<<"GKeepShapes : ";}
    if(tSPS){std::cout<<"new ";TopAbs::Print(t,std::cout);std::cout<<" "<<++n;}
    if(tSPS){std::cout<<" from ";GdumpSHA(S);if(keep)std::cout<<" is kept";else std::cout<<" is NOT kept";}
    if(tSPS){std::cout<<" ";TopAbs::Print(TB,std::cout);std::cout<<" / ";}
    if(tSPS){if(LSclass.IsEmpty())std::cout<<"empty list";else GdumpLS(LSclass);std::cout<<std::endl;}
#endif
    
    if (keep) Lou.Append(SL);
  }
}