metrivis::XYPlotVisualizer Class Reference

Represents a single process in the processing pipeline. More...

#include <XYPlotVisualizer.h>

Inheritance diagram for metrivis::XYPlotVisualizer:

Public Member Functions
	XYPlotVisualizer ()
	Default constructor.
virtual	~XYPlotVisualizer ()
	Deconstructor.
virtual void	Execute ()
	Executes the XYPlotVisualizer. Produces ouput data from input.
virtual void	Reset ()
	Resets the pipeline process to it's original state.
cairo_status_t	WriteImageData (const unsigned char *data, unsigned int length)
	Writes the image data to local memory.
void	set_borders (double min_x, double min_y, double max_x, double max_y)
	Sets the borders of the current tile.
void	set_tile_index (int x, int y, int zoom_x, int zoom_y)
	Sets the tile index of the tile to be processed.
void	set_debug (int debug_mode)
	Sets the debug mode of the tile renderer.
Private Member Functions
double	PixelToTime (long pixel_x, int zoom)
	Translates pixel cooridnates to time index.
Private Attributes
int	frame_size_
	The frame size for one tile.
double	min_x_
	Left border.
double	min_y_
	Lower border.
double	max_x_
	Right border.
double	max_y_
	Upper border.
int	x_
	The x index of the tile.
int	y_
	The y index of the tile.
int	zoom_
	The zoom factor of the tile.
int	zoom_x_
	Separate x-axis zoom.
int	zoom_y_
	Separate y-axis zoom.
int	debug_mode_
	The debug mode of this modules.

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Detailed Description

Represents a single process in the processing pipeline.

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Constructor & Destructor Documentation

metrivis::XYPlotVisualizer::XYPlotVisualizer

(

)

Default constructor.

Constructor.

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Member Function Documentation

void metrivis::XYPlotVisualizer::Execute

(

)

[virtual]

Executes the XYPlotVisualizer. Produces ouput data from input.

Executes this process and evaluates this input data and creates output from it. Abstract function needs to be overloaded.

See header file for more information.

Implements metrivis::PipelineProcess.

void metrivis::XYPlotVisualizer::Reset

(

)

[virtual]

Resets the pipeline process to it's original state.

Frees resources. May take some time to execute, don't put it into speed critical sections. This is normally done after the execution of a pipeline. It automatically gets called from Pipeline::Reset.

See header file for more information.

Reimplemented from metrivis::PipelineProcess.

cairo_status_t metrivis::XYPlotVisualizer::WriteImageData	(	const unsigned char *	data,
		unsigned int	length
	)

Writes the image data to local memory.

Parameters:

	closure,:	Closure for the image writing.
	data,:	Image data to be written.
	length,:	The length of the data to be written.

See header file for more information.

void metrivis::XYPlotVisualizer::set_borders	(	double	min_x,
		double	min_y,
		double	max_x,
		double	max_y
	)			[inline]

Sets the borders of the current tile.

Parameters:

	min_x,:	Left border of the image.
	min_y,:	Lower border of the image.
	max_x,:	Right border of the image.
	max_y,:	Upper border of the image.

This properties are typically set by URL parameters.

void metrivis::XYPlotVisualizer::set_tile_index	(	int	x,
		int	y,
		int	zoom_x,
		int	zoom_y
	)			[inline]

Sets the tile index of the tile to be processed.

Parameters:

	x,:	The x index (time).
	y,:	The y index (amplitude).
	zoom,:	The zoom factor (levels from 0 to 14).

The tile index indentifies all tiles at a given zoom level uniquely.

void metrivis::XYPlotVisualizer::set_debug

(

int

debug_mode

)

[inline]

Sets the debug mode of the tile renderer.

Parameters:

debug_mode,:

0 is interpreted as false, 1 as true.

The debug mode draws tile boundaries and tile numbers/zoom factor.

double metrivis::XYPlotVisualizer::PixelToTime	(	long	pixel_x,
		int	zoom
	)			[private]

Translates pixel cooridnates to time index.

Parameters:

	pixel_x,:	The x pixel coorindate.
	zoom,:	The zoom factor.

Returns:

The time index.

See header file for more information.

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

• src/XYPlotVisualizer.h
• src/XYPlotVisualizer.cc

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