vtkSeedRepresentation.h

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/*=========================================================================
 
  Program:   Visualization Toolkit
  Module:    vtkSeedRepresentation.h
 
  Copyright (c) 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 vtkSeedRepresentation_h
#define vtkSeedRepresentation_h
 
#include "vtkInteractionWidgetsModule.h" // For export macro
#include "vtkWidgetRepresentation.h"
 
class vtkHandleList;
class vtkHandleRepresentation;
 
 
class VTKINTERACTIONWIDGETS_EXPORT vtkSeedRepresentation : public vtkWidgetRepresentation
{
public:
  static vtkSeedRepresentation *New();
 
 
  vtkTypeMacro(vtkSeedRepresentation,vtkWidgetRepresentation);
  void PrintSelf(ostream& os, vtkIndent indent);
 
 
  virtual void GetSeedWorldPosition( unsigned int seedNum, double pos[3] );
  virtual void SetSeedDisplayPosition( unsigned int seedNum, double pos[3] );
  virtual void GetSeedDisplayPosition( unsigned int seedNum, double pos[3] );
 
  int GetNumberOfSeeds();
 
  void SetHandleRepresentation( vtkHandleRepresentation *handle );
 
  vtkHandleRepresentation *GetHandleRepresentation( unsigned int num );
 
 
  vtkHandleRepresentation *GetHandleRepresentation()
    {
    return this->HandleRepresentation;
    };
 
 
  vtkSetClampMacro( Tolerance, int, 1, 100 );
  vtkGetMacro( Tolerance, int );
 
//BTX -- used to communicate about the state of the representation
  enum
    {
    Outside = 0,
    NearSeed
    };
//ETX
 
 
  virtual int GetActiveHandle();
  // Returns the id of the seed created, -1 on failure. e is the display position.
  virtual int CreateHandle( double e[2] );
  // Delete last handle created
  virtual void RemoveLastHandle();
  // Delete the currently active handle
  virtual void RemoveActiveHandle();
 
  virtual void RemoveHandle( int n );
 
 
  virtual void BuildRepresentation();
  virtual int ComputeInteractionState( int X, int Y, int modify = 0 );
 
protected:
  vtkSeedRepresentation();
  ~vtkSeedRepresentation();
 
  // The handle and the rep used to close the handles
  vtkHandleRepresentation  *HandleRepresentation;
  vtkHandleList            *Handles;
 
  // Selection tolerance for the handles
  int Tolerance;
 
  // The active seed (handle) based on the last ComputeInteractionState()
  int ActiveHandle;
 
private:
  vtkSeedRepresentation(const vtkSeedRepresentation&);  //Not implemented
  void operator=(const vtkSeedRepresentation&);  //Not implemented
};
 
#endif