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/*=========================================================================
Program: Visualization Toolkit
Module: vtkOpenGLVolumeOpacityTable.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 vtkOpenGLVolumeOpacityTable_h
#define vtkOpenGLVolumeOpacityTable_h
#include "vtkOpenGLVolumeLookupTable.h"
#include "vtkRenderingVolumeOpenGL2Module.h" // For export macro
#include "vtkVolumeMapper.h" // for vtkVolumeMapper
// Forward declarations
VTK_ABI_NAMESPACE_BEGIN
class vtkOpenGLRenderWindow;
//----------------------------------------------------------------------------
class VTKRENDERINGVOLUMEOPENGL2_EXPORT vtkOpenGLVolumeOpacityTable
: public vtkOpenGLVolumeLookupTable
{
public:
vtkTypeMacro(vtkOpenGLVolumeOpacityTable, vtkOpenGLVolumeLookupTable);
void PrintSelf(ostream& os, vtkIndent indent) override;
static vtkOpenGLVolumeOpacityTable* New();
protected:
vtkOpenGLVolumeOpacityTable() = default;
/**
* Update the internal texture object using the opacity transfer function
*/
void InternalUpdate(vtkObject* func, int blendMode, double sampleDistance, double unitDistance,
int filterValue) override;
/**
* Test whether the internal function needs to be updated.
*/
bool NeedsUpdate(
vtkObject* func, double scalarRange[2], int blendMode, double sampleDistance) override;
int LastBlendMode = vtkVolumeMapper::MAXIMUM_INTENSITY_BLEND;
double LastSampleDistance = 1.0;
private:
vtkOpenGLVolumeOpacityTable(const vtkOpenGLVolumeOpacityTable&) = delete;
void operator=(const vtkOpenGLVolumeOpacityTable&) = delete;
};
VTK_ABI_NAMESPACE_END
#endif // vtkOpenGLVolumeOpacityTable_h
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