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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.
=========================================================================*/
// .NAME vtkRayCastImageDisplayHelper - helper class that draws the image to the screen
// .SECTION Description
// This is a helper class for drawing images created from ray casting on the screen.
// This is the abstract device-independent superclass.
// .SECTION see also
// vtkVolumeRayCastMapper 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);
virtual void PrintSelf(ostream& os, vtkIndent indent);
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 );
// Description:
// 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 );
// Description:
// Derived class should implemen this if needed
virtual void ReleaseGraphicsResources(vtkWindow *) { }
protected:
vtkRayCastImageDisplayHelper();
~vtkRayCastImageDisplayHelper();
// Description:
// Have the colors already been multiplied by alpha?
int PreMultipliedColors;
float PixelScale;
private:
vtkRayCastImageDisplayHelper(const vtkRayCastImageDisplayHelper&); // Not implemented.
void operator=(const vtkRayCastImageDisplayHelper&); // Not implemented.
};
#endif
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