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vtkRayCastImageDisplayHelper.h
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vtkRayCastImageDisplayHelper.h
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/*=========================================================================
Program: Visualization Toolkit
Module: vtkRayCastImageDisplayHelper.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.
=========================================================================*/
/**
* @class vtkRayCastImageDisplayHelper
* @brief helper class that draws the image to the screen
*
* This is a helper class for drawing images created from ray casting on the screen.
* This is the abstract device-independent superclass.
*
* @sa
* vtkUnstructuredGridVolumeRayCastMapper
* vtkOpenGLRayCastImageDisplayHelper
*/
#ifndef vtkRayCastImageDisplayHelper_h
#define vtkRayCastImageDisplayHelper_h
#include "vtkRenderingVolumeModule.h" // For export macro
#include "vtkObject.h"
class vtkFixedPointRayCastImage;
class vtkRenderer;
class vtkVolume;
class vtkWindow;
class VTKRENDERINGVOLUME_EXPORT vtkRayCastImageDisplayHelper : public vtkObject
{
public:
static vtkRayCastImageDisplayHelper *New();
vtkTypeMacro(vtkRayCastImageDisplayHelper,vtkObject);
void PrintSelf(ostream& os, vtkIndent indent) override;
virtual void RenderTexture( vtkVolume *vol, vtkRenderer *ren,
int imageMemorySize[2],
int imageViewportSize[2],
int imageInUseSize[2],
int imageOrigin[2],
float requestedDepth,
unsigned char *image ) = 0;
virtual void RenderTexture( vtkVolume *vol, vtkRenderer *ren,
int imageMemorySize[2],
int imageViewportSize[2],
int imageInUseSize[2],
int imageOrigin[2],
float requestedDepth,
unsigned short *image ) = 0;
virtual void RenderTexture( vtkVolume *vol, vtkRenderer *ren,
vtkFixedPointRayCastImage *image,
float requestedDepth ) = 0;
vtkSetClampMacro( PreMultipliedColors, int, 0, 1 );
vtkGetMacro( PreMultipliedColors, int );
vtkBooleanMacro( PreMultipliedColors, int );
//@{
/**
* Set / Get the pixel scale to be applied to the image before display.
* Can be set to scale the incoming pixel values - for example the
* fixed point mapper uses the unsigned short API but with 15 bit
* values so needs a scale of 2.0.
*/
vtkSetMacro( PixelScale, float );
vtkGetMacro( PixelScale, float );
//@}
/**
* Derived class should implemen this if needed
*/
virtual void ReleaseGraphicsResources(vtkWindow *) { }
protected:
vtkRayCastImageDisplayHelper();
~vtkRayCastImageDisplayHelper() override;
/**
* Have the colors already been multiplied by alpha?
*/
int PreMultipliedColors;
float PixelScale;
private:
vtkRayCastImageDisplayHelper(const vtkRayCastImageDisplayHelper&) = delete;
void operator=(const vtkRayCastImageDisplayHelper&) = delete;
};
#endif