nmWTAI-Platform/3rd/VTK7.1/include/vtkPlotBag.h

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

  Program:   Visualization Toolkit
  Module:    vtkPlotBag.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.

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

/**
 * @class   vtkPlotBag
 * @brief   Class for drawing an a bagplot.
 *
 *
 * This class allows to draw a bagplot given three columns from
 * a vtkTable. The first two columns will represent X,Y as it is for
 * vtkPlotPoints. The third one will have to specify if the density
 * assigned to each point (generally obtained by the
 * vtkHighestDensityRegionsStatistics filter).
 * Points are drawn in a plot points fashion and 2 convex hull polygons
 * are drawn around the median and the 3 quartile of the density field.
 *
 * @sa
 * vtkHighestDensityRegionsStatistics
*/

#ifndef vtkPlotBag_h
#define vtkPlotBag_h

#include "vtkChartsCoreModule.h" // For export macro
#include "vtkPlotPoints.h"

class vtkPen;

class VTKCHARTSCORE_EXPORT vtkPlotBag : public vtkPlotPoints
{
public:
  vtkTypeMacro(vtkPlotBag, vtkPlotPoints);
  virtual void PrintSelf(ostream &os, vtkIndent indent);

  /**
   * Creates a new Bag Plot object.
   */
  static vtkPlotBag *New();

  /**
   * Perform any updates to the item that may be necessary before rendering.
   * The scene should take care of calling this on all items before their
   * Paint function is invoked.
   */
  virtual void Update();

  /**
   * Paint event for the XY plot, called whenever the chart needs to be drawn.
   */
  virtual bool Paint(vtkContext2D *painter);

  /**
   * Paint legend event for the XY plot, called whenever the legend needs the
   * plot items symbol/mark/line drawn. A rect is supplied with the lower left
   * corner of the rect (elements 0 and 1) and with width x height (elements 2
   * and 3). The plot can choose how to fill the space supplied.
   */
  virtual bool PaintLegend(vtkContext2D *painter, const vtkRectf& rect,
                           int legendIndex);

  /**
   * Get the plot labels. If this array has a length greater than 1 the index
   * refers to the stacked objects in the plot. See vtkPlotBar for example.
   */
  virtual vtkStringArray *GetLabels();

  /**
   * Generate and return the tooltip label string for this plot
   * The segmentIndex parameter is ignored, except for vtkPlotBar
   */
  virtual vtkStdString GetTooltipLabel(const vtkVector2d &plotPos,
                                       vtkIdType seriesIndex,
                                       vtkIdType segmentIndex);

  //@{
  /**
   * Set the input, we are expecting a vtkTable with three columns. The first
   * column and the second represent the x,y position . The five others
   * columns represent the quartiles used to display the box.
   * Inherited method will call the last SetInputData method with default
   * paramaters.
   */
  virtual void SetInputData(vtkTable *table);
  virtual void SetInputData(vtkTable *table, const vtkStdString &yColumn,
                            const vtkStdString &densityColumn);
  virtual void SetInputData(vtkTable *table, const vtkStdString &xColumn,
                            const vtkStdString &yColumn,
                            const vtkStdString &densityColumn);
  //@}

  virtual void SetInputData(vtkTable *table, vtkIdType xColumn,
                            vtkIdType yColumn,
                            vtkIdType densityColumn);

  //@{
  /**
   * Set/get the visibility of the bags.
   * True by default.
   */
  vtkSetMacro(BagVisible, bool);
  vtkGetMacro(BagVisible, bool);
  //@}

  //@{
  /**
   * Set/get the vtkPen object that controls how this plot draws boundary lines.
   */
  void SetLinePen(vtkPen* pen);
  vtkGetObjectMacro(LinePen, vtkPen);
  //@}

  /**
   * Set/get the vtkPen object that controls how this plot draws points.
   * Those are just helpers functions:
   * this pen is actually the default Plot pen.
   */
  void SetPointPen(vtkPen* pen) { this->SetPen(pen); }
  vtkPen* GetPointPen() { return this->GetPen(); }

protected:
  vtkPlotBag();
  ~vtkPlotBag();

  void UpdateTableCache(vtkDataArray*);

  bool BagVisible;
  vtkPoints2D* MedianPoints;
  vtkPoints2D* Q3Points;
  vtkPen* LinePen;

private:
  vtkPlotBag(const vtkPlotBag &) VTK_DELETE_FUNCTION;
  void operator=(const vtkPlotBag &) VTK_DELETE_FUNCTION;
};

#endif //vtkPlotBag_h