dox/Widgets/vtkFocalPlanePointPlacer.h

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

  Program:   Visualization Toolkit
  Module:    $RCSfile: vtkFocalPlanePointPlacer.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 __vtkFocalPlanePointPlacer_h
#define __vtkFocalPlanePointPlacer_h

#include "vtkPointPlacer.h"

class vtkRenderer;

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


  vtkTypeRevisionMacro(vtkFocalPlanePointPlacer,vtkPointPlacer);
  void PrintSelf(ostream& os, vtkIndent indent);

  // Descirption:
  // Given a renderer and a display position, compute
  // the world position and orientation. The orientation
  // computed by the placer will always line up with the
  // standard coordinate axes. The world position will be
  // computed by projecting the display position onto the
  // focal plane. This method is typically used to place a
  // point for the first time.
  int ComputeWorldPosition( vtkRenderer *ren,
                            double displayPos[2], 
                            double worldPos[3],
                            double worldOrient[9] );
  

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

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

  vtkSetMacro( Offset, double );
  vtkGetMacro( Offset, double );


  vtkSetVector6Macro( PointBounds, double );
  vtkGetVector6Macro( PointBounds, double );

protected:
  vtkFocalPlanePointPlacer();
  ~vtkFocalPlanePointPlacer();

  void GetCurrentOrientation( double worldOrient[9] );
  
  double PointBounds[6];
  double Offset;

private:
  vtkFocalPlanePointPlacer(const vtkFocalPlanePointPlacer&);  //Not implemented
  void operator=(const vtkFocalPlanePointPlacer&);  //Not implemented
};

#endif

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