vtk3DWidget.h

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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
 
#ifndef vtk3DWidget_h
#define vtk3DWidget_h
 
#include "vtkInteractionWidgetsModule.h" // For export macro
#include "vtkInteractorObserver.h"
 
VTK_ABI_NAMESPACE_BEGIN
class vtk3DWidgetConnection;
class vtkAlgorithmOutput;
class vtkDataSet;
class vtkProp3D;
 
class VTKINTERACTIONWIDGETS_EXPORT vtk3DWidget : public vtkInteractorObserver
{
public:
  vtkTypeMacro(vtk3DWidget, vtkInteractorObserver);
  void PrintSelf(ostream& os, vtkIndent indent) override;


  virtual void PlaceWidget(double bounds[6]) = 0;
  virtual void PlaceWidget();
  virtual void PlaceWidget(
    double xmin, double xmax, double ymin, double ymax, double zmin, double zmax);


  virtual void SetProp3D(vtkProp3D*);
  vtkGetObjectMacro(Prop3D, vtkProp3D);


  virtual void SetInputData(vtkDataSet*);
  virtual void SetInputConnection(vtkAlgorithmOutput*);
  virtual vtkDataSet* GetInput();


  vtkSetClampMacro(PlaceFactor, double, 0.01, VTK_DOUBLE_MAX);
  vtkGetMacro(PlaceFactor, double);


  vtkSetClampMacro(HandleSize, double, 0.001, 0.5);
  vtkGetMacro(HandleSize, double);
 
protected:
  vtk3DWidget();
  ~vtk3DWidget() override;
 
  // Used to position and scale the widget initially
  vtkProp3D* Prop3D;
 
  vtk3DWidgetConnection* ConnectionHolder;
 
  // has the widget ever been placed
  double PlaceFactor;
  int Placed;
  void AdjustBounds(double bounds[6], double newBounds[6], double center[3]);
 
  // control the size of handles (if there are any)
  double InitialBounds[6];
  double InitialLength;
  double HandleSize;
  double SizeHandles(double factor);
  virtual void SizeHandles() {} // subclass in turn invokes parent's SizeHandles()
 
  // used to track the depth of the last pick; also interacts with handle sizing
  int ValidPick;
  double LastPickPosition[3];
 
  void UpdateInput();
 
private:
  vtk3DWidget(const vtk3DWidget&) = delete;
  void operator=(const vtk3DWidget&) = delete;
};
 
VTK_ABI_NAMESPACE_END
#endif