vtkPieChartActor.h

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

  Program:   Visualization Toolkit
  Module:    vtkPieChartActor.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 vtkPieChartActor_h
#define vtkPieChartActor_h

#include "vtkRenderingAnnotationModule.h" // For export macro
#include "vtkActor2D.h"

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 vtkPieChartActor : public vtkActor2D
{
public:

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

  static vtkPieChartActor *New();


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

  virtual vtkDataObject* GetInput();


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


  vtkSetStringMacro(Title);
  vtkGetStringMacro(Title);


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


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


  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(const int i, const char *);
  const char* GetPieceLabel(int i);


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


  vtkGetObjectMacro(LegendActor,vtkLegendBoxActor);


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

  virtual int HasTranslucentPolygonalGeometry();

  void ReleaseGraphicsResources(vtkWindow *);

protected:
  vtkPieChartActor();
  ~vtkPieChartActor();

private:

  vtkPieChartActorConnection* ConnectionHolder;

  vtkIdType ArrayNumber;
  vtkIdType ComponentNumber;
  int TitleVisibility;         // Should I see the title?
  char *Title;                 // The title string
  vtkTextProperty *TitleTextProperty;
  int LabelVisibility;
  vtkTextProperty *LabelTextProperty;
  vtkPieceLabelArray *Labels;
  int LegendVisibility;
  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, int *size);
  int BuildPlot(vtkViewport*);

private:
  vtkPieChartActor(const vtkPieChartActor&);  // Not implemented.
  void operator=(const vtkPieChartActor&);  // Not implemented.
};


#endif