ARender Class Reference

Abstract base class for all image renderers. More...

#include <ARender.h>

Inheritance diagram for ARender:

[legend]Collaboration diagram for ARender:

[legend]List of all members.

Public Member Functions
virtual	~ARender ()
virtual Color	getPixelColor (unsigned int x, unsigned int y)=0
	Gets the color of a specified screen pixel.
virtual Size	getImageSize () const =0
	Gets the intrinsic size of the image per the current settings.
virtual void	render (unsigned char *buffer)=0
	Render the image into a provided buffer, in RGBA (native-endian) format.
void	addTransferFunction (TransferFunc *aFunc)
	Adds a transfer function to use.
void	removeTransferFunction (TransferFunc *aFunc)
	Removes a transfer function from the renderer's list.
void	transferFunctionsChanged (TransferFunc *aFunc)
	Must be called when the threshold of a transfer function changes.
Protected Member Functions
Color	applyTransferFunctions (unsigned short aDataValue) const
	Passes a data value through all the transfer functions to produce a color value.
Private Attributes
std::vector< TransferFunc * >	mFunctions

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Detailed Description

Abstract base class for all image renderers.

All renderers take data as input and produce an image as output. They can either be asked for the color of an individual pixel in the image, or to fill in a provided ARGB image buffer. This class provides a few methods for configuring the renderers (especially transfer functions), but most functions can be found on subclasses.

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Constructor & Destructor Documentation

virtual ARender::~ARender (   )  [inline, virtual]

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Member Function Documentation

void ARender::addTransferFunction (  TransferFunc *  aFunc  )

Adds a transfer function to use.

Color ARender::applyTransferFunctions (  unsigned short  aDataValue  )  const [protected]

Passes a data value through all the transfer functions to produce a color value. If no functions exist, this function falls back to creating an opaque greyscale value.

virtual Size ARender::getImageSize (   )  const [pure virtual]

Gets the intrinsic size of the image per the current settings. Implemented in RayCaster, and SliceRenderer.

virtual Color ARender::getPixelColor (  unsigned int  x, unsigned int  y )  [pure virtual]

Gets the color of a specified screen pixel. Implemented in RayCaster, and SliceRenderer.

void ARender::removeTransferFunction (  TransferFunc *  aFunc  )

Removes a transfer function from the renderer's list.

virtual void ARender::render (  unsigned char *  buffer  )  [pure virtual]

Render the image into a provided buffer, in RGBA (native-endian) format. Buffer must be of size getImageSize.width() * getImageSize.height() * 4. Implemented in RayCaster, and SliceRenderer.

void ARender::transferFunctionsChanged (  TransferFunc *  aFunc  )

Must be called when the threshold of a transfer function changes. This resorts our list of functions and sets the correct next and prev threshold values. Parameters: aFunc  The function that was changed. May be null.

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Member Data Documentation

std::vector<TransferFunc*> ARender::mFunctions [private]

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The documentation for this class was generated from the following files:

• backend/ARender.h
• backend/ARender.cpp

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