Antilatency Bracer Library

Library’s functions

Get the touch sensor state;
Get the battery charge level;
Haptic vibration control.

How to use the library

Load the library;
Get ILibrary;
Get ICotaskConstructor using getCotaskConstructor;
Start the Task using startTask;
Use ICotask.

Touch sensor

The library allows getting the values from touch sensors.
To find out the number of sensors, use the ICotask.getTouchChannelsCount method. For the current version of Bracer this number is 1. For each of the channels two types of values are available:

ICotask.getTouchNativeValue returns the raw value from the sensor. It has no units of measurement. Pressing harder decreases this value.
ICotask.getTouch returns a normalized value in the range of 0..1, where 0 is zero pressure and 1 is the maximum pressure.

For normalization, calibration values from the device properties are used. This property is named touch/WindowN, where N is the channel number. It’s value is displayed as two numbers separated by a space. One of them indicates the minimum value for TouchWindow, the second is for the maximum value.

For this example, the properties look as follows:

Battery charge

ICotaskBatteryPowered.getBatteryLevel returns the current level of battery charge in the range of 0..1. 0 is for 0%, 1 is for 100%.

Haptic vibration control

Bracer contains a vibration module that the user has manual control.

For this purpose Vibration structure is used. It has two fields:

Vibration.intensity - vibration response strength in the range of 0..1.
Vibration.duration - duration of the corresponding command in seconds.

Array of structures Vibration pass in method ICotask.executeVibrationSequence as parameter. This method manage haptic vibration control.