dox/Widgets/vtkPointPlacer.h

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

  Program:   Visualization Toolkit
  Module:    vtkPointPlacer.h,v

  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 __vtkPointPlacer_h
#define __vtkPointPlacer_h

#include "vtkObject.h"

class vtkRenderer;

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


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


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

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

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


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


  virtual int UpdateNodeWorldPosition(
      double worldPos[3], vtkIdType nodePointId);

  virtual int UpdateInternalState() {return 0;}
  

  vtkSetClampMacro(PixelTolerance,int,1,100);
  vtkGetMacro(PixelTolerance,int);


  vtkSetClampMacro(WorldTolerance, double, 0.0, VTK_DOUBLE_MAX);
  vtkGetMacro(WorldTolerance, double);

protected:
  vtkPointPlacer();
  ~vtkPointPlacer();

  int          PixelTolerance;
  double       WorldTolerance;
  
private:
  vtkPointPlacer(const vtkPointPlacer&);  //Not implemented
  void operator=(const vtkPointPlacer&);  //Not implemented
};

#endif