KODI::JOYSTICK::CFeatureAxis Class Reference

Axis of a feature (analog stick, accelerometer, etc) More...

#include <FeatureHandling.h>

Public Member Functions
void	SetPositiveDistance (float distance)
	Set value of positive axis.
void	SetNegativeDistance (float distance)
	Set value of negative axis.
float	GetPosition (void) const
	Get the final value of this axis. More...
void	Reset (void)
	Reset both positive and negative values to zero.

Protected Attributes
float	m_positiveDistance
float	m_negativeDistance

Detailed Description

Axis of a feature (analog stick, accelerometer, etc)

Axes are composed of two driver primitives, one for the positive semiaxis and one for the negative semiaxis.

This effectively means that an axis is two-dimensional, with each dimension either:

• a digital value (0.0 or 1.0)
• an analog value (continuous in the interval [0.0, 1.0])

Member Function Documentation

GetPosition()

float KODI::JOYSTICK::CFeatureAxis::GetPosition ( void  ) const

inline

Get the final value of this axis.

This axis is two-dimensional, so we need to compress these into a single dimension. This is done by subtracting the negative from the positive. Some examples:

 Positive axis:  1.0 (User presses right or analog stick moves right)
 Negative axis:  0.0
 -------------------
 Pos - Neg:      1.0 (Emulated analog stick moves right)


 Positive axis:  0.0
 Negative axis:  1.0 (User presses left or analog stick moves left)
 -------------------
 Pos - Neg:     -1.0 (Emulated analog stick moves left)


 Positive axis:  1.0 (User presses both buttons)
 Negative axis:  1.0
 -------------------
 Pos - Neg:      0.0 (Emulated analog stick is centered)

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

• xbmc/input/joysticks/generic/FeatureHandling.h