http://youtu.be/fleGfCkCCFs

LaunchpadDemo.hx

package;

import js.Node;
import pony.math.Matrix;
import pony.midi.devices.Launchpad;
import pony.midi.devices.LaunchpadColor;
import pony.text.TextTools;
import pony.time.Timer;

using pony.Tools;

/**
 * LaunchpadDemo
 * @author AxGord
 */

class LaunchpadDemo {
	
	static function main() {
		#if debug
		Node.require('source-map-support').install();
		#end
		
		var data = TextTools.includeFile('lphaxe.txt');
		trace(data);
		
		var m:Matrix<LaunchpadColor> = Matrix.parse(data).map(LaunchpadColor.fromIndex);
		
		var lp = new Launchpad();
		lp.setMatrix(m);
		
		Timer.repeat(50, function() {
			m = m.hor(1);
			lp.setMatrix(m);
		});
	}
	
}

lphaxe.txt

                       
4  4 4444 4   4 4444   
4  4 4  4  4 4  4      
4444 4444   4   4444   
4  4 4  4  4 4  4      
4  4 4  4 4   4 4444