dox/Widgets/vtkTerrainDataPointPlacer.h

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

  Program:   Visualization Toolkit
  Module:    vtkTerrainDataPointPlacer.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 __vtkTerrainDataPointPlacer_h
#define __vtkTerrainDataPointPlacer_h

#include "vtkPointPlacer.h"

class vtkPropCollection;
class vtkProp;
class vtkPropPicker;

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


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

  // Descuription:
  // Add an actor (that represents a terrain in a rendererd scene) to the 
  // list. Only props in this list are considered by the PointPlacer
  virtual void AddProp( vtkProp * );
  virtual void RemoveAllProps();


  vtkSetMacro(HeightOffset,double);
  vtkGetMacro(HeightOffset,double);
  

  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] );


  vtkGetObjectMacro( PropPicker, vtkPropPicker );  

protected:
  vtkTerrainDataPointPlacer();
  ~vtkTerrainDataPointPlacer();

  // The props that represents the terrain data (one or more) in a rendered 
  // scene
  vtkPropCollection  *TerrainProps;
  vtkPropPicker      *PropPicker;
  double              HeightOffset;
  
private:
  vtkTerrainDataPointPlacer(const vtkTerrainDataPointPlacer&);  //Not implemented
  void operator=(const vtkTerrainDataPointPlacer&);  //Not implemented
};

#endif

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