pointing

Libpointing Node.js bindings

Libpointing is an open-source cross-platform library to get raw events from pointing devices and master transfer functions.

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 pointing

Note that, pointing with npm can be installed only on Mac OS and Linux.

Example

var pointing = require('pointing');

if (process.argv.length < 5)
	console.log("Usage: node", process.argv[1], "[inputdeviceURI [outputdeviceURI [transferfunctionURI]]]")

global.input = pointing.PointingDevice((process.argv[2]) ? process.argv[2] : "any:")
var output = pointing.DisplayDevice((process.argv[3]) ? process.argv[3] : "any:");
var tFunc = 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 = pointing.PointingDeviceManager().addDeviceUpdateCallback(
	function(deviceDescriptor, wasAdded)
	{
		console.log(deviceDescriptor, wasAdded);
	}
);
var acc = pointing.SystemPointerAcceleration();
console.log("Current acceleration for mouse:", acc.get());

setTimeout(function() {
	console.log("Finished");
}, 100000);

License

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