vtkScalarsToColorsItem.h

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

  Program:   Visualization Toolkit
  Module:    vtkScalarsToColorsItem.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 vtkScalarsToColorsItem_h
#define vtkScalarsToColorsItem_h

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

class vtkCallbackCommand;
class vtkImageData;
class vtkPoints2D;

class VTKCHARTSCORE_EXPORT vtkScalarsToColorsItem: public vtkPlot
{
public:
  vtkTypeMacro(vtkScalarsToColorsItem, vtkPlot);
  void PrintSelf(ostream &os, vtkIndent indent) override;

  void GetBounds(double bounds[4]) override;


  vtkSetVector4Macro(UserBounds, double);
  vtkGetVector4Macro(UserBounds, double)

  bool Paint(vtkContext2D *painter) override;


  vtkGetObjectMacro(PolyLinePen, vtkPen);


  vtkSetMacro(MaskAboveCurve, bool);
  vtkGetMacro(MaskAboveCurve, bool);

protected:
  vtkScalarsToColorsItem();
  ~vtkScalarsToColorsItem() override;

  virtual void ComputeBounds(double* bounds);

  virtual void ComputeTexture() = 0;

  vtkGetMacro(TextureWidth, int);

  void TransformDataToScreen(const double dataX, const double dataY,
                             double &screenX, double &screenY);
  void TransformScreenToData(const double screenX, const double screenY,
                             double &dataX, double &dataY);


  virtual void ScalarsToColorsModified(vtkObject* caller, unsigned long eid, void* calldata);
  static void OnScalarsToColorsModified(vtkObject* caller, unsigned long eid, void *clientdata, void* calldata);

  double              UserBounds[4];

  int                 TextureWidth;
  vtkImageData*       Texture;
  bool                Interpolate;
  vtkPoints2D*        Shape;
  vtkCallbackCommand* Callback;

  vtkPen*             PolyLinePen;
  bool                MaskAboveCurve;
private:
  vtkScalarsToColorsItem(const vtkScalarsToColorsItem &) = delete;
  void operator=(const vtkScalarsToColorsItem &) = delete;
};

#endif