libpointing

Libpointing Node.js bindings

Description

Libpointing is an open-source cross-platform library that provides direct access to HID pointing devices and supports the design of pointing transfer functions.

Installation

• Install libpointing
• npm install libpointing

Works on Windows, macOS and Linux.

Example

var pointing = require('libpointing');
 
if (process.argv.length < 5)
    console.log("Usage: node", process.argv[1], "[inputdeviceURI [outputdeviceURI [transferfunctionURI]]]")
 
var input = new pointing.PointingDevice((process.argv[2]) ? process.argv[2] : "any:")
var output = new pointing.DisplayDevice((process.argv[3]) ? process.argv[3] : "any:");
var tFunc = new pointing.TransferFunction((process.argv[4]) ? process.argv[4] : "system:", input, output);
 
input.setPointingCallback(function(timestamp, dx, dy, buttons) {
    var pixels = tFunc.applyi(dx, dy, timestamp);
    console.log(timestamp, dx, dy, buttons, " -> ", pixels.dx, pixels.dy);
});
 
var manager = new pointing.PointingDeviceManager().addDeviceUpdateCallback(
    function(deviceDescriptor, wasAdded) {
        console.log(deviceDescriptor, wasAdded);
    }
);

License

This software may be used and distributed according to the terms of the GNU General Public License version 2 or any later version.