//=========================================================================
//  Copyright (c) Kitware, Inc.
//  All rights reserved.
//  See LICENSE.txt for details.
//
//  This software is distributed WITHOUT ANY WARRANTY; without even
//  the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
//  PURPOSE.  See the above copyright notice for more information.
//=========================================================================

// .NAME vtkSelectionSplitOperatorBase - Split a model face based on a vtkSelection.
// .SECTION Description
// Operator to split model faces based on a vtkSelection. Note
// that the cell Ids included in the vtkSelection are with respect
// to the master vtkPolyData.

#ifndef __smtkdiscrete_vtkSelectionSplitOperatorBase_h
#define __smtkdiscrete_vtkSelectionSplitOperatorBase_h

#include "ModelEdgeHelper.h"
#include "smtk/bridge/discrete/Exports.h" // For export macro
#include "vtkObject.h"

class vtkDiscreteModel;
class vtkIdTypeArray;

class SMTKDISCRETESESSION_EXPORT vtkSelectionSplitOperatorBase : public vtkObject
{
public:
  static vtkSelectionSplitOperatorBase* New();
  vtkTypeMacro(vtkSelectionSplitOperatorBase, vtkObject);
  void PrintSelf(ostream& os, vtkIndent indent);

  // Description:
  // Get the list of modified geometric model entity pairs during a
  // split operation.  If you are accessing the information inside
  // the array you should strongly consider using AddModifiedPair()
  // or GetModifiedPair() instead.
  vtkGetObjectMacro(ModifiedPairIDs, vtkIdTypeArray);

  // Description:
  // Get the list of completely selected model faces during a split operation.
  vtkGetObjectMacro(CompletelySelectedIDs, vtkIdTypeArray);

  // Description:
  // Add a pair of IDs of modified geometric model entities.  SourceID is
  // the Id of the geometric model entity that was split and TargetID is
  // the Id of the geometric model entity that was created from the split.
  void AddModifiedPair(vtkIdType SourceID, vtkIdType TargetID);

  // Description:
  // Get a pair of IDs of modified geometric model entities.  SourceID is
  // the Id of the geometric model entity that was split and TargetID is
  // the Id of the geometric model entity that was created from the split.
  // The function returns true if it succeeded.
  bool GetModifiedPair(vtkIdType index, vtkIdType& SourceID, vtkIdType& TargetID);

  // Description:
  // Set/get the current existing face Id, which is used to retrieve
  // the cached SplitInfo
  vtkGetMacro(CurrentExistingFaceId, vtkIdType);
  vtkSetMacro(CurrentExistingFaceId, vtkIdType);

  // Description:
  // Get FaceSplitInfo arrays AFTER a split operation, based on
  // CurrentExistingFaceId
  virtual vtkIdTypeArray* GetSplitEdgeVertIds()
  {
    return this->GetSplitEdgeVertIds(this->CurrentExistingFaceId);
  }
  virtual vtkIdTypeArray* GetCreatedModelEdgeVertIDs()
  {
    return this->GetCreatedModelEdgeVertIDs(this->CurrentExistingFaceId);
  }
  virtual vtkIdTypeArray* GetFaceEdgeLoopIDs()
  {
    return this->GetFaceEdgeLoopIDs(this->CurrentExistingFaceId);
  }
  virtual vtkIdTypeArray* GetSplitEdgeVertIds(vtkIdType existingfaceid)
  {
    return this->FaceSplitInfo[existingfaceid].SplitEdgeVertIds;
  }
  virtual vtkIdTypeArray* GetCreatedModelEdgeVertIDs(vtkIdType existingfaceid)
  {
    return this->FaceSplitInfo[existingfaceid].CreatedModelEdgeVertIDs;
  }
  virtual vtkIdTypeArray* GetFaceEdgeLoopIDs(vtkIdType existingfaceid)
  {
    return this->FaceSplitInfo[existingfaceid].FaceEdgeLoopIDs;
  }

protected:
  vtkSelectionSplitOperatorBase();
  virtual ~vtkSelectionSplitOperatorBase();

  // Description:
  // Check to see if everything is properly set for the operator.
  virtual bool AbleToOperate(vtkDiscreteModel* Model);

  // Description:
  // This is particularly for caching info for splitting hybrid model faces
  // with edges so that the changes can be tranfered to client model.
  // <ExistingFaceId, FaceEdgeSplitInfo>
  std::map<vtkIdType, FaceEdgeSplitInfo> FaceSplitInfo;

  // Description:
  // The split angle for the operator in degrees.
  vtkIdType CurrentExistingFaceId;

private:
  // Description:
  // The list of modified geometric model entities.  The number of components
  // in the array is two with the first tuple Id corresponding to the
  // geometric model entity that had cells removed from it (the source)
  // and the second Id corresponding to the geometric model entity
  // that was created from the source.
  vtkIdTypeArray* ModifiedPairIDs;

  // Description:
  // The list of model faces that were completely selected and thus
  // not split.  This may be useful if a BCS/Entity Group is to be applied
  // to all of the resulting model faces.
  vtkIdTypeArray* CompletelySelectedIDs;

  vtkSelectionSplitOperatorBase(const vtkSelectionSplitOperatorBase&); // Not implemented.
  void operator=(const vtkSelectionSplitOperatorBase&);                // Not implemented.
};

#endif
