dox/Filtering/vtkDiscretizableColorTransferFunction.h

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

  Program:   Visualization Toolkit
  Module:    vtkDiscretizableColorTransferFunction.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 __vtkDiscretizableColorTransferFunction_h
#define __vtkDiscretizableColorTransferFunction_h

#include "vtkColorTransferFunction.h"

class vtkLookupTable;
class vtkColorTransferFunction;

class VTK_FILTERING_EXPORT vtkDiscretizableColorTransferFunction : public vtkColorTransferFunction
{
public:
  static vtkDiscretizableColorTransferFunction* New();
  vtkTypeMacro(vtkDiscretizableColorTransferFunction, vtkColorTransferFunction);
  void PrintSelf(ostream& os, vtkIndent indent);
  
  virtual void Build();


  vtkSetMacro(Discretize, int);
  vtkGetMacro(Discretize, int);
  vtkBooleanMacro(Discretize, int);


  virtual void SetUseLogScale(int useLogScale);
  vtkGetMacro(UseLogScale, int);


  void SetNumberOfValues(vtkIdType number);
  vtkGetMacro(NumberOfValues, vtkIdType);

  virtual unsigned char *MapValue(double v);

  virtual void GetColor(double v, double rgb[3]);


  virtual vtkUnsignedCharArray *MapScalars(vtkDataArray *scalars, int colorMode,
                                   int component);

  double* GetRGBPoints();

  virtual void SetAlpha(double alpha);



  virtual int UsingLogScale()
    { return this->UseLogScale; }

protected:
  vtkDiscretizableColorTransferFunction();
  ~vtkDiscretizableColorTransferFunction();

  int Discretize;
  int UseLogScale;

  vtkIdType NumberOfValues;
  vtkLookupTable* LookupTable;

  vtkTimeStamp BuildTime;
private:
  vtkDiscretizableColorTransferFunction(const vtkDiscretizableColorTransferFunction&); // Not implemented.
  void operator=(const vtkDiscretizableColorTransferFunction&); // Not implemented.

  // Pointer used by GetRGBPoints().
  double* Data;
};

#endif

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