dox/Widgets/vtkImageActorPointPlacer.h

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

  Program:   Visualization Toolkit
  Module:    vtkImageActorPointPlacer.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 __vtkImageActorPointPlacer_h
#define __vtkImageActorPointPlacer_h

#include "vtkPointPlacer.h"

class vtkBoundedPlanePointPlacer;
class vtkImageActor;
class vtkRenderer;

class VTK_WIDGETS_EXPORT vtkImageActorPointPlacer : public vtkPointPlacer
{
public:
  static vtkImageActorPointPlacer *New();


  vtkTypeMacro(vtkImageActorPointPlacer,vtkPointPlacer);
  void PrintSelf(ostream& os, vtkIndent indent);


  int ComputeWorldPosition( vtkRenderer *ren,
                            double displayPos[2], 
                            double worldPos[3],
                            double worldOrient[9] );
  

  int ComputeWorldPosition( vtkRenderer *ren,
                            double displayPos[2], 
                            double refWorldPos[2],
                            double worldPos[3],
                            double worldOrient[9] );
  
  int ValidateWorldPosition( double worldPos[3] );
  

  int ValidateWorldPosition( double worldPos[3],
                             double worldOrient[9]);
  


  int UpdateWorldPosition( vtkRenderer *ren,
                           double worldPos[3],
                           double worldOrient[9]);

  int UpdateInternalState();


  void SetImageActor( vtkImageActor * );
  vtkGetObjectMacro( ImageActor, vtkImageActor );


  vtkSetVector6Macro( Bounds, double );
  vtkGetVector6Macro( Bounds, double );

  virtual void SetWorldTolerance( double s );
    
protected:
  vtkImageActorPointPlacer();
  ~vtkImageActorPointPlacer();


  // The reference image actor. Must be configured before this placer
  // is used.
  vtkImageActor *ImageActor;
  
  // The internal placer.
  vtkBoundedPlanePointPlacer *Placer;
  
  // Used to keep track of whether the bounds of the
  // input image have changed
  double SavedBounds[6];

  // See the SetBounds method
  double Bounds[6];
  
private:
  vtkImageActorPointPlacer(const vtkImageActorPointPlacer&);  //Not implemented
  void operator=(const vtkImageActorPointPlacer&);  //Not implemented
};

#endif

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