pointing::SigmoidFunction Class Reference

The SigmoidFunction class implements the transfer function which is an discrete approximation of the sigmoid function. More...

#include <SigmoidFunction.h>

Inheritance diagram for pointing::SigmoidFunction:

Public Member Functions
	SigmoidFunction (URI &uri, PointingDevice *input, DisplayDevice *output)
void	clearState (void)
	Method which clears the current state of the device to be the default one (without any remainders or previous data).
void	applyi (int dxMickey, int dyMickey, int *dxPixel, int *dyPixel, TimeStamp::inttime timestamp=TimeStamp::undef)
	apply The main method of the class which applies the transfer function. More...
void	applyd (int dxMickey, int dyMickey, double *dxPixel, double *dyPixel, TimeStamp::inttime timestamp=TimeStamp::undef)
	apply The main method of the class which applies the transfer function. More...
URI	getURI (bool expanded=false) const
	getURI The method constructs URI corresponding to the type and parameters of the transfer function. More...
Public Member Functions inherited from pointing::TransferFunction
virtual void	setDebugLevel (int)
	Sets the level of information for debugging purposes (default = 0).
virtual void	debug (std::ostream &) const

Additional Inherited Members
Static Public Member Functions inherited from pointing::TransferFunction
static std::list< std::string >	schemes (void)
static TransferFunction *	create (const char *function_uri, PointingDevice *input, DisplayDevice *output)
	Static method to instantiate an object of a sub-class. More...
static TransferFunction *	create (std::string function_uri, PointingDevice *input, DisplayDevice *output)
static TransferFunction *	create (URI &function_uri, PointingDevice *input, DisplayDevice *output)
Protected Member Functions inherited from pointing::TransferFunction
void	normalizeInput (int *dx, int *dy, PointingDevice *input) const
	normalizeInput Normalizes input to a transfer function with respect to the given PointingDevice. For example, to prevent fast movements of the cursor for high resolution mice. dx and dy are changed according to the input->getResolution() More...
void	normalizeOutput (int *dx, int *dy, DisplayDevice *output) const
	normalizeOutput Normalizes output of a transfer function with respect to the given DisplayDevice. For example, to prevent slow movements of the cursor for high resolution display. dx and dy are changed according to the output->getResolution() More...

Detailed Description

The SigmoidFunction class implements the transfer function which is an discrete approximation of the sigmoid function.

In this case 2 mouse speeds are used as boundaries which are mapped onto 2 gain boundaries such that if the mouse speed is in-between 2 speed boundaries, then the corresponding gain value is computed by interpolating min and max gain values. Otherwise, minimum or maximum gain value is chosen.

Member Function Documentation

void pointing::SigmoidFunction::applyd ( int  dxMickey, int  dyMickey, double *  dxPixel, double *  dyPixel, TimeStamp::inttime  timestamp = TimeStamp::undef  )

virtual

apply The main method of the class which applies the transfer function.

Parameters

dxMickey	Translation in dots of the input device along x direction.
dyMickey	Translation in dots of the input device along y direction.
dxPixel	(Double) Computed translation in pixels of the output device along x direction.
dyPixel	(Double) Computed translation in pixels of the output device along y direction.
timestamp

Implements pointing::TransferFunction.

void pointing::SigmoidFunction::applyi ( int  dxMickey, int  dyMickey, int *  dxPixel, int *  dyPixel, TimeStamp::inttime  timestamp = TimeStamp::undef  )

virtual

apply The main method of the class which applies the transfer function.

Parameters

dxMickey	Translation in dots of the input device along x direction.
dyMickey	Translation in dots of the input device along y direction.
dxPixel	(Integer) Computed translation in pixels of the output device along x direction.
dyPixel	(Integer) Computed translation in pixels of the output device along y direction.
timestamp

Implements pointing::TransferFunction.

URI pointing::SigmoidFunction::getURI ( bool  expanded = false ) const

virtual

getURI The method constructs URI corresponding to the type and parameters of the transfer function.

Parameters

expanded

Indicates whether all parameters must be included in URI.

Returns

URI result.

Implements pointing::TransferFunction.

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

• SigmoidFunction.h
• SigmoidFunction.cpp