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74 lines
2.5 KiB
C++
74 lines
2.5 KiB
C++
/*=========================================================================
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Program: Visualization Toolkit
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Module: vtkUnstructuredGridVolumeRayIntegrator.h
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Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
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All rights reserved.
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See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
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This software is distributed WITHOUT ANY WARRANTY; without even
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the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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PURPOSE. See the above copyright notice for more information.
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=========================================================================*/
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/**
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* @class vtkUnstructuredGridVolumeRayIntegrator
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* @brief a superclass for volume ray integration functions
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*
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*
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*
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* vtkUnstructuredGridVolumeRayIntegrator is a superclass for ray
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* integration functions that can be used within a
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* vtkUnstructuredGridVolumeRayCastMapper.
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*
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* @sa
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* vtkUnstructuredGridVolumeRayCastMapper
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* vtkUnstructuredGridVolumeRayCastFunction
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*/
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#ifndef vtkUnstructuredGridVolumeRayIntegrator_h
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#define vtkUnstructuredGridVolumeRayIntegrator_h
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#include "vtkObject.h"
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#include "vtkRenderingVolumeModule.h" // For export macro
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class vtkVolume;
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class vtkDoubleArray;
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class vtkDataArray;
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class VTKRENDERINGVOLUME_EXPORT vtkUnstructuredGridVolumeRayIntegrator : public vtkObject
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{
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public:
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vtkTypeMacro(vtkUnstructuredGridVolumeRayIntegrator, vtkObject);
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void PrintSelf(ostream& os, vtkIndent indent) override;
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/**
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* Set up the integrator with the given properties and scalars.
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*/
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virtual void Initialize(vtkVolume* volume, vtkDataArray* scalars) = 0;
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/**
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* Given a set of intersections (defined by the three arrays), compute
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* the piecewise integration of the array in front to back order.
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* /c intersectionLengths holds the lengths of each piecewise segment.
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* /c nearIntersections and /c farIntersections hold the scalar values at
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* the front and back of each segment. /c color should contain the RGBA
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* value of the volume in front of the segments passed in, and the result
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* will be placed back into /c color.
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*/
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virtual void Integrate(vtkDoubleArray* intersectionLengths, vtkDataArray* nearIntersections,
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vtkDataArray* farIntersections, float color[4]) = 0;
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protected:
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vtkUnstructuredGridVolumeRayIntegrator();
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~vtkUnstructuredGridVolumeRayIntegrator() override;
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private:
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vtkUnstructuredGridVolumeRayIntegrator(const vtkUnstructuredGridVolumeRayIntegrator&) = delete;
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void operator=(const vtkUnstructuredGridVolumeRayIntegrator&) = delete;
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};
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#endif
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