---

Graphics/vtkSelectPolyData.h

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/*=========================================================================

  Program:   Visualization Toolkit
  Module:    $RCSfile: vtkSelectPolyData.h,v $
  Language:  C++

  Copyright (c) 1993-2002 Ken Martin, Will Schroeder, Bill Lorensen 
  All rights reserved.
  See Copyright.txt or http://www.kitware.com/Copyright.htm 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.

=========================================================================*/
#ifndef __vtkSelectPolyData_h
#define __vtkSelectPolyData_h

#include "vtkPolyDataToPolyDataFilter.h"

#define VTK_INSIDE_SMALLEST_REGION 0
#define VTK_INSIDE_LARGEST_REGION 1
#define VTK_INSIDE_CLOSEST_POINT_REGION 2

class vtkCharArray;
class vtkPoints;
class vtkIdList;

class VTK_GRAPHICS_EXPORT vtkSelectPolyData : public vtkPolyDataToPolyDataFilter
{
public:
  static vtkSelectPolyData *New();

  vtkTypeRevisionMacro(vtkSelectPolyData,vtkPolyDataToPolyDataFilter);
  void PrintSelf(ostream& os, vtkIndent indent);


  vtkSetMacro(GenerateSelectionScalars,int);
  vtkGetMacro(GenerateSelectionScalars,int);
  vtkBooleanMacro(GenerateSelectionScalars,int);


  vtkSetMacro(InsideOut,int);
  vtkGetMacro(InsideOut,int);
  vtkBooleanMacro(InsideOut,int);


  virtual void SetLoop(vtkPoints*);
  vtkGetObjectMacro(Loop,vtkPoints);


  vtkSetClampMacro(SelectionMode,int,
             VTK_INSIDE_SMALLEST_REGION,VTK_INSIDE_CLOSEST_POINT_REGION);
  vtkGetMacro(SelectionMode,int);
  void SetSelectionModeToSmallestRegion()
    {this->SetSelectionMode(VTK_INSIDE_SMALLEST_REGION);};
  void SetSelectionModeToLargestRegion()
    {this->SetSelectionMode(VTK_INSIDE_LARGEST_REGION);};
  void SetSelectionModeToClosestPointRegion()
    {this->SetSelectionMode(VTK_INSIDE_CLOSEST_POINT_REGION);};
  const char *GetSelectionModeAsString();


  vtkSetMacro(GenerateUnselectedOutput,int);
  vtkGetMacro(GenerateUnselectedOutput,int);
  vtkBooleanMacro(GenerateUnselectedOutput,int);

  vtkPolyData *GetUnselectedOutput() {return this->UnselectedOutput;};

  vtkPolyData *GetSelectionEdges() {return this->SelectionEdges;};

  // Overload GetMTime() because we depend on Loop
  unsigned long int GetMTime();

  virtual void UnRegister(vtkObjectBase *o);

  virtual int InRegisterLoop(vtkObject *);

protected:
  vtkSelectPolyData();
  ~vtkSelectPolyData();

  void Execute();

  int GenerateSelectionScalars;
  int InsideOut;
  vtkPoints *Loop;
  int SelectionMode;
  float ClosestPoint[3];
  int GenerateUnselectedOutput;
  vtkPolyData *UnselectedOutput;
  vtkPolyData *SelectionEdges;

private:
  vtkPolyData *Mesh;
  void GetPointNeighbors (vtkIdType ptId, vtkIdList *nei);
private:
  vtkSelectPolyData(const vtkSelectPolyData&);  // Not implemented.
  void operator=(const vtkSelectPolyData&);  // Not implemented.
};

inline const char *vtkSelectPolyData::GetSelectionModeAsString(void)
{
  if ( this->SelectionMode == VTK_INSIDE_SMALLEST_REGION ) 
    {
    return "InsideSmallestRegion";
    }
  else if ( this->SelectionMode == VTK_INSIDE_LARGEST_REGION ) 
    {
    return "InsideLargestRegion";
    }
  else 
    {
    return "InsideClosestPointRegion";
    }
}

#endif

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