vtkMRMLThreeDViewInteractorStyle.h

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/*=========================================================================
 
  Program:   Visualization Toolkit
  Module:    $RCSfile: vtkInteractorStyleTrackballCamera.h,v $
 
  Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
  All rights reserved.
  See Copyright.txt or https://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 __vtkMRMLThreeDViewInteractorStyle_h
#define __vtkMRMLThreeDViewInteractorStyle_h
 
#include "vtkMRMLDisplayableManagerExport.h"
 
// MRML includes
#include "vtkMRMLCameraNode.h"
#include "vtkMRMLViewInteractorStyle.h"
 
// VTK includes
#include "vtkObject.h"
#include "vtkSmartPointer.h"
 
class vtkCellPicker;
class vtkVolumePicker;
class vtkWorldPointPicker;

class VTK_MRML_DISPLAYABLEMANAGER_EXPORT vtkMRMLThreeDViewInteractorStyle : public vtkMRMLViewInteractorStyle
{
public:
  static vtkMRMLThreeDViewInteractorStyle* New();
  vtkTypeMacro(vtkMRMLThreeDViewInteractorStyle, vtkMRMLViewInteractorStyle);
  void PrintSelf(ostream& os, vtkIndent indent) override;
 
  void SetDisplayableManagers(vtkMRMLDisplayableManagerGroup* displayableManagers) override;

  void OnLeave() override;

  using vtkMRMLViewInteractorStyle::DelegateInteractionEventToDisplayableManagers;
  bool DelegateInteractionEventToDisplayableManagers(vtkEventData* inputEventData) override;

  vtkGetObjectMacro(CameraNode, vtkMRMLCameraNode);
  vtkSetObjectMacro(CameraNode, vtkMRMLCameraNode);

  void SetInteractor(vtkRenderWindowInteractor* interactor) override;
 
protected:
  vtkMRMLThreeDViewInteractorStyle();
  ~vtkMRMLThreeDViewInteractorStyle() override;
 
  bool QuickPick(int x, int y, double pickPoint[3]);
 
  void ProcessDisplayableManagerEvents(vtkMRMLAbstractDisplayableManager* displayableManager, unsigned long event, void* callData) override;
 
  vtkMRMLCameraNode* CameraNode;
 
  // For jump to slice feature (when mouse is moved while shift key is pressed)
  // Slow but can pick anything (volumes and semi-transparent surfaces)
  vtkSmartPointer<vtkCellPicker> AccuratePicker;
  // Picker that uses Z buffer. Fast but ignores volumes and semi-transparent surfaces.
  vtkSmartPointer<vtkWorldPointPicker> QuickPicker;
  // Picker for volume-rendered images. Fast, as it only computes a single ray.
  vtkSmartPointer<vtkVolumePicker> QuickVolumePicker;
 
private:
  vtkMRMLThreeDViewInteractorStyle(const vtkMRMLThreeDViewInteractorStyle&) = delete;
  void operator=(const vtkMRMLThreeDViewInteractorStyle&) = delete;
};
 
#endif