vtkGeoInteractorStyle.h

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/*=========================================================================
 
  Program:   Visualization Toolkit
  Module:    vtkGeoInteractorStyle.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.
 
=========================================================================*/
/*-------------------------------------------------------------------------
  Copyright 2008 Sandia Corporation.
  Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
  the U.S. Government retains certain rights in this software.
-------------------------------------------------------------------------*/
#ifndef vtkGeoInteractorStyle_h
#define vtkGeoInteractorStyle_h
 
#include "vtkGeovisCoreModule.h" // For export macro
#include "vtkInteractorStyleTrackballCamera.h"
#include "vtkSmartPointer.h" // for SP
 
class vtkCamera;
class vtkCommand;
class vtkCompassWidget;
class vtkGeoCamera;
class vtkUnsignedCharArray;
 
class VTKGEOVISCORE_EXPORT vtkGeoInteractorStyle :
  public vtkInteractorStyleTrackballCamera
{
public:
  static vtkGeoInteractorStyle *New();
  vtkTypeMacro(vtkGeoInteractorStyle,
                       vtkInteractorStyleTrackballCamera);
  void PrintSelf(ostream& os, vtkIndent indent);
 
 
  virtual void OnEnter();
  virtual void OnLeave();
  virtual void OnMouseMove();
  virtual void OnLeftButtonUp();
  virtual void OnMiddleButtonUp();
  virtual void OnRightButtonUp();
  virtual void OnLeftButtonDown();
  virtual void OnMiddleButtonDown();
  virtual void OnRightButtonDown();
  virtual void OnChar();
 
  virtual void RubberBandZoom();
  virtual void Pan();
  virtual void Dolly();
 
  // Public for render callback.
  void RedrawRectangle();
 
  // See cxx for description of why we need this method.
  void StartState(int newstate);
 
  // Used for updating the terrain.
  vtkGeoCamera* GetGeoCamera();
 
  void ResetCamera();
 
  void WidgetInteraction(vtkObject *caller);
 
  virtual void SetInteractor(vtkRenderWindowInteractor *interactor);
 
  int ViewportToWorld(double x, double y,
                      double &wx, double &wy, double &wz);
  void WorldToLongLat(double wx, double wy, double wz,
                      double &lon, double &lat);
  void ViewportToLongLat(double x, double y,
                         double &lon, double &lat);
  int GetRayIntersection(double origin[3],
                         double direction[3],
                         double intersection[3]);
 
  virtual void SetCurrentRenderer(vtkRenderer*);
 
 
  vtkGetMacro(LockHeading, bool);
  vtkSetMacro(LockHeading, bool);
  vtkBooleanMacro(LockHeading, bool);
 
  void ResetCameraClippingRange();
 
protected:
  vtkGeoInteractorStyle();
  ~vtkGeoInteractorStyle();
 
  // To avoid a warning.
  // We should really inherit directy from vtkInteractorStyle
  virtual void Dolly(double);
 
  void OnTimer();
  // Used to get a constant speed regardless of frame rate.
  double LastTime;
 
  // Rubberband zoom has a verification stage.
  int RubberBandExtent[4];
  int RubberBandExtentEnabled;
  int RenderCallbackTag;
  void EnableRubberBandRedraw();
  void DisableRubberBandRedraw();
  bool InRubberBandRectangle(int x, int y);
  void DrawRectangle();
 
  void KeepCameraAboveGround(vtkCamera* camera);
  void UpdateLights();
  void GetPanCenter(double &px, double &py);
 
  int StartPosition[2];
  int EndPosition[2];
  int DraggingRubberBandBoxState;
  double MotionFactor;
  vtkUnsignedCharArray *PixelArray;
  int PixelDims[2];
  bool LockHeading;
 
//BTX
  vtkSmartPointer<vtkGeoCamera> GeoCamera;
 
  // widget handling members
  vtkSmartPointer<vtkCompassWidget> CompassWidget;
  vtkSmartPointer<vtkCommand> EventCommand;
 
//ETX
 
private:
  vtkGeoInteractorStyle(const vtkGeoInteractorStyle&);  // Not implemented.
  void operator=(const vtkGeoInteractorStyle&);  // Not implemented.
};
 
#endif