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Program: Visualization Toolkit
Module: vtkSpiderPlotActor.h
Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
All rights reserved.
See Copyright.txt or for details.
This software is distributed WITHOUT ANY WARRANTY; without even
PURPOSE. See the above copyright notice for more information.
// .NAME vtkSpiderPlotActor - create a spider plot from input field
// .SECTION Description
// vtkSpiderPlotActor generates a spider plot from an input field (i.e.,
// vtkDataObject). A spider plot represents N-dimensional data by using a set
// of N axes that originate from the center of a circle, and form the spokes
// of a wheel (like a spider web). Each N-dimensional point is plotted as a
// polyline that forms a closed polygon; the vertices of the polygon
// are plotted against the radial axes.
// 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. Another important parameter is the IndependentVariables ivar, which
// tells the instance how to interpret the field data (independent variables
// as the rows or columns of the field). 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 Caveats
// Field data is not necessarily "rectangular" in shape. In these cases, some
// of the data may not be plotted.
// Field data can contain non-numeric arrays (i.e. arrays not subclasses of
// vtkDataArray). Such arrays are skipped.
// .SECTION See Also
// vtkParallelCoordinatesActor vtkXYPlotActor2D
#ifndef __vtkSpiderPlotActor_h
#define __vtkSpiderPlotActor_h
#include "vtkActor2D.h"
class vtkAxisActor2D;
class vtkDataObject;
class vtkPolyData;
class vtkPolyDataMapper2D;
class vtkTextMapper;
class vtkTextProperty;
class vtkLegendBoxActor;
class vtkGlyphSource2D;
class vtkAxisLabelArray;
class vtkAxisRanges;
#define VTK_IV_COLUMN 0
#define VTK_IV_ROW 1
class VTK_HYBRID_EXPORT vtkSpiderPlotActor : public vtkActor2D
// Description:
// Standard methods for type information and printing.
void PrintSelf(ostream& os, vtkIndent indent);
// Description:
// Instantiate this class.
static vtkSpiderPlotActor *New();
// Description:
// Set the input to the spider plot actor.
virtual void SetInput(vtkDataObject*);
// Description:
// Get the input data object to this actor.
// Description:
// Specify whether to use the rows or columns as independent variables.
// If columns, then each row represents a separate point. If rows, then
// each column represents a separate point.
vtkSetClampMacro(IndependentVariables,int,VTK_IV_COLUMN, VTK_IV_ROW);
void SetIndependentVariablesToColumns()
void SetIndependentVariablesToRows()
// 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 spider plot.
// Description:
// Set/Get the title text property.
virtual void SetTitleTextProperty(vtkTextProperty *p);
// Enable/Disable the display axes titles. These are arranged on the end
// of each radial axis on the circumference of the spider plot. The label
// text strings are derived from the names of the data object arrays
// associated with the input.
vtkSetMacro(LabelVisibility, int);
vtkGetMacro(LabelVisibility, int);
vtkBooleanMacro(LabelVisibility, int);
// 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.
virtual void SetLabelTextProperty(vtkTextProperty *p);
// Description:
// Specify the number of circumferential rings. If set to zero, then
// none will be shown; othewise the specified number will be shown.
// Description:
// Specify the names of the radial spokes (i.e., the radial axes). If
// not specified, then an integer number is automatically generated.
void SetAxisLabel(const int i, const char *);
const char* GetAxisLabel(int i);
// Description:
// Specify the range of data on each radial axis. If not specified,
// then the range is computed automatically.
void SetAxisRange(int i, double min, double max);
void SetAxisRange(int i, double range[2]);
void GetAxisRange(int i, double range[2]);
// Description:
// Specify colors for each plot. If not specified, they are automatically generated.
void SetPlotColor(int i, double r, double g, double b);
void SetPlotColor(int i, const double color[3])
{ this->SetPlotColor(i, color[0], color[1], color[2]); }
double *GetPlotColor(int i);
// 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.
// Description:
// Draw the spider 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 *);
vtkDataObject *Input; // List of data sets to plot
int IndependentVariables; // Use column or row
int TitleVisibility; // Should I see the title?
char *Title; // The title string
vtkTextProperty *TitleTextProperty;
int LabelVisibility;
vtkTextProperty *LabelTextProperty;
vtkAxisLabelArray *Labels;
int LegendVisibility;
vtkLegendBoxActor *LegendActor;
vtkGlyphSource2D *GlyphSource;
int NumberOfRings;
int AutomaticRangeComputation;
// Local variables needed to plot
vtkIdType N; // The number of independent variables
double *Mins; // Minimum data value along this row/column
double *Maxs; // Maximum data value along this row/column
vtkAxisRanges *Ranges;
vtkTextMapper **LabelMappers; //a label for each radial spoke
vtkActor2D **LabelActors;
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;
double Theta;
int LastPosition[2];
int LastPosition2[2];
double P1[3];
double P2[3];
void Initialize();
int PlaceAxes(vtkViewport *viewport, int *size);
int BuildPlot(vtkViewport*);
vtkSpiderPlotActor(const vtkSpiderPlotActor&); // Not implemented.
void operator=(const vtkSpiderPlotActor&); // Not implemented.