// File:	TopoDSToStep_MakeShellBasedSurfaceModel.cxx
// Created:	Fri Jun 24 13:32:06 1994
// Author:	Frederic MAUPAS
//		<fma@nonox>

#include <TopoDSToStep_MakeShellBasedSurfaceModel.ixx>
#include <TopoDSToStep.hxx>
#include <TopoDSToStep_Builder.hxx>
#include <TopoDSToStep_Tool.hxx>
#include <MoniTool_DataMapOfShapeTransient.hxx>
#include <StepShape_Shell.hxx>
#include <StepShape_OpenShell.hxx>
#include <StepShape_ClosedShell.hxx>
#include <StepShape_TopologicalRepresentationItem.hxx>
#include <StepShape_ConnectedFaceSet.hxx>
#include <StepShape_OpenShell.hxx>
#include <StepShape_ClosedShell.hxx>
#include <StepShape_FaceSurface.hxx>
#include <StepShape_HArray1OfShell.hxx>
#include <StepShape_HArray1OfFace.hxx>

#include <TopoDS.hxx>
#include <TopoDS_Iterator.hxx>

#include <TColStd_SequenceOfTransient.hxx>
#include <StdFail_NotDone.hxx>
#include <Transfer_FinderProcess.hxx>
#include <TransferBRep_ShapeMapper.hxx>
#include <TCollection_HAsciiString.hxx>

//=============================================================================
// Create a ShellBasedSurfaceModel of StepShape from a Face of TopoDS
//=============================================================================

TopoDSToStep_MakeShellBasedSurfaceModel::
  TopoDSToStep_MakeShellBasedSurfaceModel(const TopoDS_Face& aFace,
                                          const Handle(Transfer_FinderProcess)& FP)
{
  done = Standard_False;
  MoniTool_DataMapOfShapeTransient aMap;

  TopoDSToStep_Tool    aTool(aMap, Standard_False);
  TopoDSToStep_Builder StepB(aFace, aTool, FP);

  TopoDSToStep::AddResult ( FP, aTool );

  if (StepB.IsDone()) {
    Handle(StepShape_FaceSurface) aFS =
      Handle(StepShape_FaceSurface)::DownCast(StepB.Value());
    StepShape_Shell aShellSelect;
    Handle(StepShape_OpenShell) aOpenShell 
      = new StepShape_OpenShell();
    Handle(StepShape_HArray1OfFace) aCfsFaces =
      new StepShape_HArray1OfFace(1,1);
    aCfsFaces->SetValue(1,aFS);
    Handle(TCollection_HAsciiString) aName = 
      new TCollection_HAsciiString("");
    aOpenShell->Init(aName, aCfsFaces);
    aShellSelect.SetValue(aOpenShell);
    Handle(StepShape_HArray1OfShell) aSbsmFaces =
      new StepShape_HArray1OfShell(1,1);
    aSbsmFaces->SetValue(1, aShellSelect);
    theShellBasedSurfaceModel = new StepShape_ShellBasedSurfaceModel();
    theShellBasedSurfaceModel->Init(aName, aSbsmFaces);
    done = Standard_True;
  }
  else {
    done = Standard_False;
    Handle(TransferBRep_ShapeMapper) errShape =
      new TransferBRep_ShapeMapper(aFace);
    FP->AddWarning(errShape, " Single Face not mapped to ShellBasedSurfaceModel");
  }
}

//=============================================================================
// Create a ShellBasedSurfaceModel of StepShape from a Shell of TopoDS
//=============================================================================

TopoDSToStep_MakeShellBasedSurfaceModel::
  TopoDSToStep_MakeShellBasedSurfaceModel(const TopoDS_Shell& aShell,
                                          const Handle(Transfer_FinderProcess)& FP)
{
  done = Standard_False;
  StepShape_Shell                                 aShellSelect;
  Handle(StepShape_HArray1OfShell)                aSbsmBoundary;
  Handle(StepShape_OpenShell)                     aOpenShell;
  Handle(StepShape_ClosedShell)                   aClosedShell;
  MoniTool_DataMapOfShapeTransient                aMap;
  
  TopoDSToStep_Tool    aTool(aMap, Standard_False);
  TopoDSToStep_Builder StepB(aShell, aTool, FP);
  //TopoDSToStep::AddResult ( FP, aTool );

  if (StepB.IsDone()) {
    aSbsmBoundary = new StepShape_HArray1OfShell(1,1);
    if (aShell.Closed()) {
      aClosedShell = Handle(StepShape_ClosedShell)::DownCast(StepB.Value());
      aShellSelect.SetValue(aClosedShell);
    }
    else {
      aOpenShell = Handle(StepShape_OpenShell)::DownCast(StepB.Value());
      aShellSelect.SetValue(aOpenShell);
    }
    aSbsmBoundary->SetValue(1,aShellSelect);
    theShellBasedSurfaceModel = new StepShape_ShellBasedSurfaceModel();
    Handle(TCollection_HAsciiString) aName = 
      new TCollection_HAsciiString("");
    theShellBasedSurfaceModel->Init(aName, aSbsmBoundary);
    
    // bind SBSM
    TopoDSToStep::AddResult(FP,aShell,theShellBasedSurfaceModel);
    done = Standard_True;
  }
  else {
    done = Standard_False;
    Handle(TransferBRep_ShapeMapper) errShape =
      new TransferBRep_ShapeMapper(aShell);
    FP->AddWarning(errShape, " Shell not mapped to ShellBasedSurfaceModel");
  }
  
  TopoDSToStep::AddResult ( FP, aTool );
}

//=============================================================================
// Create a ShellBasedSurfaceModel of StepShape from a Solid of TopoDS
//=============================================================================

TopoDSToStep_MakeShellBasedSurfaceModel::
  TopoDSToStep_MakeShellBasedSurfaceModel(const TopoDS_Solid& aSolid,
				    const Handle(Transfer_FinderProcess)& FP)
{
  done = Standard_False;
  StepShape_Shell                  aShellSelect;
  Handle(StepShape_HArray1OfShell) aSbsmBoundary;
  Handle(StepShape_OpenShell)      aOpenShell;
  Handle(StepShape_ClosedShell)    aClosedShell;
  TopoDS_Iterator              It;
  TopoDS_Shell                 aShell;
  MoniTool_DataMapOfShapeTransient   aMap;
  TColStd_SequenceOfTransient  S;
  
  It.Initialize(aSolid);
  for (; It.More(); It.Next() ) {
    if (It.Value().ShapeType() == TopAbs_SHELL) {
      aShell = TopoDS::Shell(It.Value());

      TopoDSToStep_Tool    aTool(aMap, Standard_False);
      TopoDSToStep_Builder StepB(aShell, aTool, FP);
      TopoDSToStep::AddResult ( FP, aTool );

      if (StepB.IsDone()) {
	S.Append(StepB.Value());
      }
      else {
	Handle(TransferBRep_ShapeMapper) errShape =
	  new TransferBRep_ShapeMapper(aShell);
	FP->AddWarning(errShape," Shell from Solid not mapped to ShellBasedSurfaceModel");
      }
    }
  }
  Standard_Integer N = S.Length();
  if ( N >= 1) {
    aSbsmBoundary = new StepShape_HArray1OfShell(1,N);
    for (Standard_Integer i=1; i<=N; i++) {
      aOpenShell = Handle(StepShape_OpenShell)::DownCast(S.Value(i));
      if (!aOpenShell.IsNull()) {
	aShellSelect.SetValue(aOpenShell);
      }
      else {
	aClosedShell = Handle(StepShape_ClosedShell)::DownCast(S.Value(i));
	aShellSelect.SetValue(aClosedShell);
      }
      aSbsmBoundary->SetValue(i,aShellSelect);
    }
    
    theShellBasedSurfaceModel = new StepShape_ShellBasedSurfaceModel();
    Handle(TCollection_HAsciiString) aName = 
      new TCollection_HAsciiString("");
    theShellBasedSurfaceModel->Init(aName,aSbsmBoundary);
    done = Standard_True;
  }
  else {
    done = Standard_False;
    Handle(TransferBRep_ShapeMapper) errShape =
      new TransferBRep_ShapeMapper(aSolid);
    FP->AddWarning(errShape," Solid contains no Shell to be mapped to ShellBasedSurfaceModel");
  }
}

//=============================================================================
// renvoi des valeurs
//=============================================================================

const Handle(StepShape_ShellBasedSurfaceModel) &
      TopoDSToStep_MakeShellBasedSurfaceModel::Value() const
{
  StdFail_NotDone_Raise_if(!done,"");
  return theShellBasedSurfaceModel;
}