vtkUnstructuredGridLinearRayIntegrator.h

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/*=========================================================================
 
  Program:   Visualization Toolkit
  Module:    vtkUnstructuredGridLinearRayIntegrator.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.
 
=========================================================================*/
 
/*
 * Copyright 2004 Sandia Corporation.
 * Under the terms of Contract DE-AC04-94AL85000, there is a non-exclusive
 * license for use of this work by or on behalf of the
 * U.S. Government. Redistribution and use in source and binary forms, with
 * or without modification, are permitted provided that this Notice and any
 * statement of authorship are reproduced on all copies.
 */
 
#ifndef vtkUnstructuredGridLinearRayIntegrator_h
#define vtkUnstructuredGridLinearRayIntegrator_h
 
#include "vtkRenderingVolumeModule.h" // For export macro
#include "vtkUnstructuredGridVolumeRayIntegrator.h"
 
class vtkLinearRayIntegratorTransferFunction;
class vtkVolumeProperty;
 
class VTKRENDERINGVOLUME_EXPORT vtkUnstructuredGridLinearRayIntegrator
  : public vtkUnstructuredGridVolumeRayIntegrator
{
public:
  vtkTypeMacro(vtkUnstructuredGridLinearRayIntegrator, vtkUnstructuredGridVolumeRayIntegrator);
  static vtkUnstructuredGridLinearRayIntegrator* New();
  void PrintSelf(ostream& os, vtkIndent indent) override;
 
  void Initialize(vtkVolume* volume, vtkDataArray* scalars) override;
 
  void Integrate(vtkDoubleArray* intersectionLengths, vtkDataArray* nearIntersections,
    vtkDataArray* farIntersections, float color[4]) override;
 
 
  static void IntegrateRay(double length, double intensity_front, double attenuation_front,
    double intensity_back, double attenuation_back, float color[4]);
  static void IntegrateRay(double length, const double color_front[3], double attenuation_front,
    const double color_back[3], double attenuation_back, float color[4]);
 
  static float Psi(float length, float attenuation_front, float attenuation_back);
 
protected:
  vtkUnstructuredGridLinearRayIntegrator();
  ~vtkUnstructuredGridLinearRayIntegrator() override;
 
  vtkVolumeProperty* Property;
 
  vtkLinearRayIntegratorTransferFunction* TransferFunctions;
  vtkTimeStamp TransferFunctionsModified;
  int NumIndependentComponents;
 
private:
  vtkUnstructuredGridLinearRayIntegrator(const vtkUnstructuredGridLinearRayIntegrator&) = delete;
  void operator=(const vtkUnstructuredGridLinearRayIntegrator&) = delete;
};
 
#endif // vtkUnstructuredGridLinearRayIntegrator_h