vtkInteractorStyleRubberBandZoom.h

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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
 
#ifndef vtkInteractorStyleRubberBandZoom_h
#define vtkInteractorStyleRubberBandZoom_h
 
#include "vtkInteractionStyleModule.h" // For export macro
#include "vtkInteractorStyle.h"
#include "vtkRect.h"          // for vtkRecti
#include "vtkWrappingHints.h" // For VTK_MARSHALAUTO
 
VTK_ABI_NAMESPACE_BEGIN
class vtkUnsignedCharArray;
 
class VTKINTERACTIONSTYLE_EXPORT VTK_MARSHALAUTO 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;
 
  virtual void ZoomTraditional(const vtkRecti& box);

  virtual vtkVector3d CalculatePerspectiveZoomFocalPoint(const vtkRecti& box) const;
 
  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;
};
 
VTK_ABI_NAMESPACE_END
#endif