vtkWindowLevelLookupTable.h

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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
 
#ifndef vtkWindowLevelLookupTable_h
#define vtkWindowLevelLookupTable_h
 
#include "vtkLookupTable.h"
#include "vtkRenderingCoreModule.h" // For export macro
 
#include <algorithm> // For std::max
 
VTK_ABI_NAMESPACE_BEGIN
class VTKRENDERINGCORE_EXPORT vtkWindowLevelLookupTable : public vtkLookupTable
{
public:
  static vtkWindowLevelLookupTable* New();
  vtkTypeMacro(vtkWindowLevelLookupTable, vtkLookupTable);
  void PrintSelf(ostream& os, vtkIndent indent) override;

  void ForceBuild() override;


  void SetWindow(double window)
  {
    window = std::max(window, 1e-5);
    this->Window = window;
    this->SetTableRange(this->Level - this->Window / 2.0, this->Level + this->Window / 2.0);
  }
  vtkGetMacro(Window, double);


  void SetLevel(double level)
  {
    this->Level = level;
    this->SetTableRange(this->Level - this->Window / 2.0, this->Level + this->Window / 2.0);
  }
  vtkGetMacro(Level, double);


  void SetInverseVideo(vtkTypeBool iv);
  vtkGetMacro(InverseVideo, vtkTypeBool);
  vtkBooleanMacro(InverseVideo, vtkTypeBool);


  vtkSetVector4Macro(MinimumTableValue, double);
  vtkGetVector4Macro(MinimumTableValue, double);


  vtkSetVector4Macro(MaximumTableValue, double);
  vtkGetVector4Macro(MaximumTableValue, double);
 
protected:
  vtkWindowLevelLookupTable(int sze = 256, int ext = 256);
  ~vtkWindowLevelLookupTable() override = default;
 
  double Window;
  double Level;
  vtkTypeBool InverseVideo;
  double MaximumTableValue[4];
  double MinimumTableValue[4];
 
private:
  vtkWindowLevelLookupTable(const vtkWindowLevelLookupTable&) = delete;
  void operator=(const vtkWindowLevelLookupTable&) = delete;
};
 
VTK_ABI_NAMESPACE_END
#endif