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/*=========================================================================
Program: Visualization Toolkit
Module: vtkBarChartActor.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.
=========================================================================*/
// .NAME vtkBarChartActor - create a bar chart from an array
// .SECTION Description
// vtkBarChartActor generates a bar chart from an array of numbers defined in
// field data (a vtkDataObject). To use this class, you must specify an input
// data object. You'll probably also want to specify the position of the plot
// be setting the Position and Position2 instance variables, which define a
// rectangle in which the plot lies. There are also many other instance
// variables that control the look of the plot includes its title and legend.
//
// Set the text property/attributes of the title and the labels through the
// vtkTextProperty objects associated with these components.
// .SECTION See Also
// vtkParallelCoordinatesActor vtkXYPlotActor2D vtkSpiderPlotActor
// vtkPieChartActor
#ifndef __vtkBarChartActor_h
#define __vtkBarChartActor_h
#include "vtkActor2D.h"
class vtkAxisActor2D;
class vtkDataObject;
class vtkPolyData;
class vtkPolyDataMapper2D;
class vtkTextMapper;
class vtkTextProperty;
class vtkLegendBoxActor;
class vtkGlyphSource2D;
class vtkBarLabelArray;
class VTK_HYBRID_EXPORT vtkBarChartActor : public vtkActor2D
{
public:
// Description:
// Standard methods for type information and printing.
vtkTypeMacro(vtkBarChartActor,vtkActor2D);
void PrintSelf(ostream& os, vtkIndent indent);
// Description:
// Instantiate this class.
static vtkBarChartActor *New();
// Description:
// Set the input to the bar chart actor.
virtual void SetInput(vtkDataObject*);
// Description:
// Get the input data object to this actor.
vtkGetObjectMacro(Input,vtkDataObject);
// Description:
// Enable/Disable the display of a plot title.
vtkSetMacro(TitleVisibility, int);
vtkGetMacro(TitleVisibility, int);
vtkBooleanMacro(TitleVisibility, int);
// Description:
// Set/Get the title of the bar chart.
vtkSetStringMacro(Title);
vtkGetStringMacro(Title);
// Description:
// Set/Get the title text property. The property controls the
// appearance of the plot title.
virtual void SetTitleTextProperty(vtkTextProperty *p);
vtkGetObjectMacro(TitleTextProperty,vtkTextProperty);
// Description:
// Enable/Disable the display of bar labels.
vtkSetMacro(LabelVisibility, int);
vtkGetMacro(LabelVisibility, int);
vtkBooleanMacro(LabelVisibility, int);
// Description:
// Set/Get the labels text property. This controls the appearance
// of all bar bar labels.
virtual void SetLabelTextProperty(vtkTextProperty *p);
vtkGetObjectMacro(LabelTextProperty,vtkTextProperty);
// Description:
// Specify colors for each bar. If not specified, they are
// automatically generated.
void SetBarColor(int i, double r, double g, double b);
void SetBarColor(int i, const double color[3])
{ this->SetBarColor(i, color[0], color[1], color[2]); }
double *GetBarColor(int i);
// Description:
// Specify the names of each bar. If
// not specified, then an integer number is automatically generated.
void SetBarLabel(const int i, const char *);
const char* GetBarLabel(int i);
// Description:
// Specify the title of the y-axis.
vtkSetStringMacro(YTitle);
vtkGetStringMacro(YTitle);
// Description:
// Enable/Disable the creation of a legend. If on, the legend labels will
// be created automatically unless the per plot legend symbol has been
// set.
vtkSetMacro(LegendVisibility, int);
vtkGetMacro(LegendVisibility, int);
vtkBooleanMacro(LegendVisibility, int);
// Description:
// Retrieve handles to the legend box. This is useful if you would like
// to manually control the legend appearance.
vtkGetObjectMacro(LegendActor,vtkLegendBoxActor);
// Description:
// Draw the bar plot.
int RenderOverlay(vtkViewport*);
int RenderOpaqueGeometry(vtkViewport*);
virtual int RenderTranslucentPolygonalGeometry(vtkViewport* ) {return 0;}
// Description:
// Does this prop have some translucent polygonal geometry?
virtual int HasTranslucentPolygonalGeometry();
// Description:
// Release any graphics resources that are being consumed by this actor.
// The parameter window could be used to determine which graphic
// resources to release.
void ReleaseGraphicsResources(vtkWindow *);
protected:
vtkBarChartActor();
~vtkBarChartActor();
private:
vtkDataObject *Input; // List of data sets to plot
vtkIdType ArrayNumber;
vtkIdType ComponentNumber;
int TitleVisibility; // Should I see the title?
char *Title; // The title string
vtkTextProperty *TitleTextProperty;
int LabelVisibility;
vtkTextProperty *LabelTextProperty;
vtkBarLabelArray *Labels;
int LegendVisibility;
vtkLegendBoxActor *LegendActor;
vtkGlyphSource2D *GlyphSource;
// Local variables needed to plot
vtkIdType N; // The number of values
double *Heights; // The heights of each bar
double MinHeight; //The maximum and minimum height
double MaxHeight;
double LowerLeft[2];
double UpperRight[2];
vtkTextMapper **BarMappers; //a label for each bar
vtkActor2D **BarActors;
vtkTextMapper *TitleMapper;
vtkActor2D *TitleActor;
vtkPolyData *PlotData; // The actual bars plus the x-axis
vtkPolyDataMapper2D *PlotMapper;
vtkActor2D *PlotActor;
vtkAxisActor2D *YAxis; //The y-axis
char *YTitle;
vtkTimeStamp BuildTime;
int LastPosition[2];
int LastPosition2[2];
double P1[3];
double P2[3];
void Initialize();
int PlaceAxes(vtkViewport *viewport, int *size);
int BuildPlot(vtkViewport*);
private:
vtkBarChartActor(const vtkBarChartActor&); // Not implemented.
void operator=(const vtkBarChartActor&); // Not implemented.
};
#endif