---

FastImageGen Class Reference

This class processes a FractalImage by calculating it pixel by pixel. More...

#include <FastImageGen.h>

Inheritance diagram for FastImageGen:

List of all members.

Public Methods
	FastImageGen (FractalImage *)
	Constructor.
void	init (void)
	Overriden from ImageGen base class.
void	restart (void)
	Overriden from ImageGen base class.
bool	process (void)
	Overriden from ImageGen base class.
bool	inq_done (void) const
	Overriden from ImageGen base class.
int	inq_progress (void) const
	Overriden from ImageGen base class.
Private Attributes
FractalImage *	m_image
	FractalImage.
bool	m_done
	Flag that is set once processing is finished.
int	m_progress
	Progress counter - increments from 0 to 100 during processing.
int	m_x
	'x' offset to current pixel.
int	m_y
	'y' offset to current pixel.
rgbcolour_t *	m_curr_rgb_pixel
	Pointer to current RGB pixel.
unsigned short *	m_curr_pixel_itns
	Pointer to current pixel iteration count,.
Vector2	m_curr_pixel
	Position of bottom left corner of current pixel.
Vector2	m_rowstart
	Position in fractal space of first pixel on the current row.
Vector2	m_xoffs
	Offset in fractal space from a pixel to the next.
Vector2	m_yoffs
	Offset in fractal space from a pixel in one row to the next.

---

Detailed Description

This class processes a FractalImage by calculating it pixel by pixel.

This is much faster than the technique used by ProgressiveFractalImage, but it does mean there is nothing to see until the whole image has been calculated.

---

Constructor & Destructor Documentation

FastImageGen::FastImageGen (  FractalImage *    image )

Constructor. Parameters: image  The image that this FastImageGen will generate.

---

Member Function Documentation

void FastImageGen::init (  void    )  [virtual]

Overriden from ImageGen base class. Implements ImageGen.

bool FastImageGen::inq_done (  void    )  const [virtual]

Overriden from ImageGen base class. Returns: Returns true when image has been generated. Implements ImageGen.

int FastImageGen::inq_progress (  void    )  const [virtual]

Overriden from ImageGen base class. Returns: Returns the value shown as a progress indicator in the status bar. Implements ImageGen.

bool FastImageGen::process (  void    )  [virtual]

Overriden from ImageGen base class. Processes the next pixel. This method should be called repeatedly until inq_done() returns true. Returns: Returns true if the display should be updated (which is when all pixels have been processed), otherwise false. Implements ImageGen.

void FastImageGen::restart (  void    )  [virtual]

Overriden from ImageGen base class. Initialises all the member variables for processing 'm_image'. This must be called before process() is called, and whenever the image changes. Implements ImageGen.

---

Member Data Documentation

Vector2 FastImageGen::m_curr_pixel [private]

Position of bottom left corner of current pixel.

unsigned short* FastImageGen::m_curr_pixel_itns [private]

Pointer to current pixel iteration count,.

rgbcolour_t* FastImageGen::m_curr_rgb_pixel [private]

Pointer to current RGB pixel.

bool FastImageGen::m_done [private]

Flag that is set once processing is finished.

FractalImage* FastImageGen::m_image [private]

FractalImage.

int FastImageGen::m_progress [private]

Progress counter - increments from 0 to 100 during processing.

Vector2 FastImageGen::m_rowstart [private]

Position in fractal space of first pixel on the current row.

int FastImageGen::m_x [private]

'x' offset to current pixel.

Vector2 FastImageGen::m_xoffs [private]

Offset in fractal space from a pixel to the next. This is determined from the view transform and the image size.

int FastImageGen::m_y [private]

'y' offset to current pixel.

Vector2 FastImageGen::m_yoffs [private]

Offset in fractal space from a pixel in one row to the next. This is determined from the view transform and the image size.

---

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

• FastImageGen.h
• FastImageGen.cpp

---