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

  Program:   Visualization Toolkit
  Module:    vtkValuePainter.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 vtkValuePainter_h
#define vtkValuePainter_h

#include "vtkRenderingOpenGLModule.h" // For export macro
#include "vtkStandardPolyDataPainter.h"

class vtkInformationDoubleVectorKey;
class vtkInformationIntegerKey;
class vtkInformationStringKey;

class VTKRENDERINGOPENGL_EXPORT vtkValuePainter :
  public vtkStandardPolyDataPainter
{
public:
  static vtkValuePainter* New();
  vtkTypeMacro(vtkValuePainter, vtkStandardPolyDataPainter);
  void PrintSelf(ostream& os, vtkIndent indent);


  void SetInputArrayToProcess(int fieldAssociation, const char *name);
  void SetInputArrayToProcess(int fieldAssociation, int fieldAttributeType);

  void SetInputComponentToProcess(int comp);

  void SetScalarRange(double min, double max);


  static vtkInformationIntegerKey* SCALAR_MODE();
  static vtkInformationDoubleVectorKey* SCALAR_RANGE();
  static vtkInformationIntegerKey* ARRAY_ID();
  static vtkInformationStringKey* ARRAY_NAME();
  static vtkInformationIntegerKey* ARRAY_COMPONENT();


  static void ValueToColor(double value, double min, double scale,
                           unsigned char *color);

  static void ColorToValue(unsigned char *color, double min, double scale,
                           double &value);

protected:
  vtkValuePainter();
  ~vtkValuePainter();

  virtual void ProcessInformation(vtkInformation*);


  virtual void RenderInternal(vtkRenderer* renderer, vtkActor* actor,
    unsigned long typeflags, bool forceCompileOnly);


  void DrawCells(int mode, vtkCellArray *connectivity,
    vtkIdType startCellId, vtkRenderer *renderer);

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

  class vtkInternals;
  vtkInternals *Internals;
};

#endif