TimeSerieBuffer Class Reference

Buffer for sensor data. It is used by chart control. More...

#include <TimeSerieBuffer.h>

Inheritance diagram for TimeSerieBuffer:

Public Member Functions
	TimeSerieBuffer (float time_step, float factor_y, int reserved_size, int size)
	Constructor. More...
	TimeSerieBuffer (float time_step, float factor_y, int size)
	Constructor. More...
bool	SetSize (int size)
	Sets actual buffer size. It has to be less or equal to reserved_size.
float	SetTimeStep (float time_step)
	Sets time interval between samples in buffer.
float	SetFactorY (float factor_y)
	Sets scale factor for mesaurements.
void	Set (unsigned int index, float value)
	Puts value into buffer. More...
int *	Y ()
	Returns point to vaues array. It is used for direct access to internal buffer.
void	MinMax (float &min_x, float &max_x, float &min_y, float &max_y)
	Returns min and max value for buffer data.
float	X (unsigned int index)
	Returns X that is calculated from index in buffer (see time_step parameter)
float	Y (unsigned int index)
	Returns scaled value Y from buffer for specified index.
unsigned int	StartIndex ()
	Returns start index in buffer. For this class is always 0.
unsigned int	Size ()
	Returns buffer size.

Protected Member Functions
void	initialize (float time_step, float factor_y, int reserved_size, int size)
	Initialize internal buffer.

Detailed Description

Buffer for sensor data. It is used by chart control.

Constructor & Destructor Documentation

TimeSerieBuffer::TimeSerieBuffer ( float  time_step, float  factor_y, int  reserved_size, int  size  )

inline

Constructor.

Parameters

time_step	time interval between samples in buffer
factor_y	scale factor for measurements. Data can be stored as volts measured directly on board pins and this factor transform them into phisical units
reserved_size	expected buffer size. This value allows buffer allocation only once. This is highly recomended because memory allocation is expencive operation. Mutiple allocation leads also to memory fragmentation.
size	actual buffer size

TimeSerieBuffer::TimeSerieBuffer ( float  time_step, float  factor_y, int  size  )

inline

Constructor.

Parameters

time_step	time interval between samples in buffer
factor_y	scale factor for measurements. Data can be stored as volts measured directly on board pins and this factor transform them into phisical units
size	actual buffer size. reserved_size=size

Member Function Documentation

void TimeSerieBuffer::Set ( unsigned int  index, float  value  )

inline

Puts value into buffer.

Parameters

index	index in buffer. It has to be less than size
value	value to save in the buffer

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

• TimeSerieBuffer.h