vtkPieChartActor.h

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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
 
#ifndef vtkPieChartActor_h
#define vtkPieChartActor_h
 
#include "vtkActor2D.h"
#include "vtkNew.h"                       // For vtkNew
#include "vtkRenderingAnnotationModule.h" // For export macro
#include "vtkWrappingHints.h"             // For VTK_MARSHALAUTO
 
VTK_ABI_NAMESPACE_BEGIN
class vtkAlgorithmOutput;
class vtkAxisActor2D;
class vtkDataObject;
class vtkPolyData;
class vtkPolyDataMapper2D;
class vtkTextMapper;
class vtkTextProperty;
class vtkLegendBoxActor;
class vtkGlyphSource2D;
class vtkPieChartActorConnection;
class vtkPieceLabelArray;
 
class VTKRENDERINGANNOTATION_EXPORT VTK_MARSHALAUTO vtkPieChartActor : public vtkActor2D
{
public:

  vtkTypeMacro(vtkPieChartActor, vtkActor2D);
  void PrintSelf(ostream& os, vtkIndent indent) override;

  static vtkPieChartActor* New();


  VTK_MARSHALSETTER(Input)
  virtual void SetInputData(vtkDataObject*);
  virtual void SetInputConnection(vtkAlgorithmOutput*);

  VTK_MARSHALGETTER(Input)
  virtual vtkDataObject* GetInput();


  vtkSetMacro(TitleVisibility, vtkTypeBool);
  vtkGetMacro(TitleVisibility, vtkTypeBool);
  vtkBooleanMacro(TitleVisibility, vtkTypeBool);


  vtkSetStringMacro(Title);
  vtkGetStringMacro(Title);


  virtual void SetTitleTextProperty(vtkTextProperty* p);
  vtkGetObjectMacro(TitleTextProperty, vtkTextProperty);


  vtkSetMacro(LabelVisibility, vtkTypeBool);
  vtkGetMacro(LabelVisibility, vtkTypeBool);
  vtkBooleanMacro(LabelVisibility, vtkTypeBool);


  virtual void SetLabelTextProperty(vtkTextProperty* p);
  vtkGetObjectMacro(LabelTextProperty, vtkTextProperty);


  void SetPieceColor(int i, double r, double g, double b);
  void SetPieceColor(int i, const double color[3])
  {
    this->SetPieceColor(i, color[0], color[1], color[2]);
  }
  double* GetPieceColor(int i);


  void SetPieceLabel(int i, const char*);
  const char* GetPieceLabel(int i);
  int GetNumberOfPieceLabels();


  vtkSetMacro(LegendVisibility, vtkTypeBool);
  vtkGetMacro(LegendVisibility, vtkTypeBool);
  vtkBooleanMacro(LegendVisibility, vtkTypeBool);


  vtkGetObjectMacro(LegendActor, vtkLegendBoxActor);


  int RenderOverlay(vtkViewport*) override;
  int RenderOpaqueGeometry(vtkViewport*) override;
  int RenderTranslucentPolygonalGeometry(vtkViewport*) override { return 0; }

  vtkTypeBool HasTranslucentPolygonalGeometry() override;

  void ReleaseGraphicsResources(vtkWindow*) override;
 
protected:
  vtkPieChartActor();
  ~vtkPieChartActor() override;
 
private:
  vtkPieChartActorConnection* ConnectionHolder;
 
  vtkIdType ArrayNumber;
  vtkIdType ComponentNumber;
  vtkTypeBool TitleVisibility; // Should I see the title?
  char* Title;                 // The title string
  vtkTextProperty* TitleTextProperty;
  vtkTypeBool LabelVisibility;
  vtkTextProperty* LabelTextProperty;
  vtkPieceLabelArray* Labels;
  vtkTypeBool LegendVisibility;
  vtkNew<vtkLegendBoxActor> LegendActor;
  vtkGlyphSource2D* GlyphSource;
 
  // Local variables needed to plot
  vtkIdType N;       // The number of values
  double Total;      // The total of all values in the data array
  double* Fractions; // The fraction of the pie
 
  vtkTextMapper** PieceMappers; // a label for each radial spoke
  vtkActor2D** PieceActors;
 
  vtkTextMapper* TitleMapper;
  vtkActor2D* TitleActor;
 
  vtkPolyData* WebData; // The web of the spider plot
  vtkPolyDataMapper2D* WebMapper;
  vtkActor2D* WebActor;
 
  vtkPolyData* PlotData; // The lines drawn within the axes
  vtkPolyDataMapper2D* PlotMapper;
  vtkActor2D* PlotActor;
 
  vtkTimeStamp BuildTime;
 
  double Center[3];
  double Radius;
 
  int LastPosition[2];
  int LastPosition2[2];
  double P1[3];
  double P2[3];
 
  void Initialize();
  int PlaceAxes(vtkViewport* viewport, const int* size);
  int BuildPlot(vtkViewport*);
 
  vtkPieChartActor(const vtkPieChartActor&) = delete;
  void operator=(const vtkPieChartActor&) = delete;
};
 
VTK_ABI_NAMESPACE_END
#endif