vtkInteractorStyleRubberBandZoom.h

Go to the documentation of this file.

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

  Program:   Visualization Toolkit
  Module:    vtkInteractorStyleRubberBandZoom.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 vtkInteractorStyleRubberBandZoom_h
#define vtkInteractorStyleRubberBandZoom_h

#include "vtkInteractionStyleModule.h" // For export macro
#include "vtkInteractorStyle.h"
#include "vtkRect.h" // for vtkRecti

class vtkUnsignedCharArray;

class VTKINTERACTIONSTYLE_EXPORT vtkInteractorStyleRubberBandZoom : public vtkInteractorStyle
{
public:
  static vtkInteractorStyleRubberBandZoom *New();
  vtkTypeMacro(vtkInteractorStyleRubberBandZoom, vtkInteractorStyle);
  void PrintSelf(ostream& os, vtkIndent indent) override;


  vtkSetMacro(LockAspectToViewport, bool);
  vtkGetMacro(LockAspectToViewport, bool);
  vtkBooleanMacro(LockAspectToViewport, bool);


  vtkSetMacro(CenterAtStartPosition, bool);
  vtkGetMacro(CenterAtStartPosition, bool);
  vtkBooleanMacro(CenterAtStartPosition, bool);


  vtkSetMacro(UseDollyForPerspectiveProjection, bool);
  vtkGetMacro(UseDollyForPerspectiveProjection, bool);
  vtkBooleanMacro(UseDollyForPerspectiveProjection, bool);


  void OnMouseMove() override;
  void OnLeftButtonDown() override;
  void OnLeftButtonUp() override;

protected:
  vtkInteractorStyleRubberBandZoom();
  ~vtkInteractorStyleRubberBandZoom() override;

  void Zoom() override;

  int StartPosition[2];
  int EndPosition[2];
  int Moving;
  bool LockAspectToViewport;
  bool CenterAtStartPosition;
  bool UseDollyForPerspectiveProjection;
  vtkUnsignedCharArray *PixelArray;
private:
  vtkInteractorStyleRubberBandZoom(const vtkInteractorStyleRubberBandZoom&) = delete;
  void operator=(const vtkInteractorStyleRubberBandZoom&) = delete;

  void AdjustBox(int startPosition[2], int endPosition[2]) const;

  void ZoomTraditional(const vtkRecti& box);
  void ZoomPerspectiveProjectionUsingViewAngle(const vtkRecti& box);
};

#endif