import java.applet.Applet;
import java.awt.*;
import java.io.*;

public class LibraGetStarted extends Applet
{
	private ConsoleOutputStream console = null;

	public void init() 
	{ 
		setName("Libra Matrix Multiplication Applet");
		setSize(1280, 480);		
		console = new ConsoleOutputStream(480);
		String[] args = {""};
		_main(args, console.out);
	}
	public void stop() 
	{ 
	}
	public void paint(Graphics g) 
	{  
		if (console != null)
			console.draw(g);
	}
	
	public void _main(String[] args, PrintStream out)
	{
        	System.loadLibrary("jv");
        	if (libra.Init(args.length, args) != 0)
	   	     return;

        	// Add code here...
		double startTime, time;

        	//libra.SetCurrentBackend(gBackend.CPU_BACKEND);
        	float randomValuesCPU[] = new float[1024*1024];
        	gVar randomValuesGPU = libra.rand(1024);randomValuesGPU = libra.rand(1024);
        
        	//
		startTime = libra.GetTime();

		// Java math random() running on CPU
		//for (int i=0;i<1024*1024;++i)
		//	randomValuesCPU[i] = (float)Math.random();
		//
		
		// Libra math rand() running on GPU 
        	randomValuesGPU = libra.rand(1024); // Create 1 million (1024*1024) random values using the computer GPU device if available (default is GPU, fallback CPU).

		//
		time = libra.GetTime() - startTime;
		out.format("Total time : %g%s", time*1000, " milliseconds");out.println();

		// Transfer data from GPU to Java CPU array
		randomValuesGPU.getData(randomValuesCPU);
		//r.print();
		
        	libra.Shutdown();     
	}
	
   	 public static void main(String[] args)
   	 {
     	  	new LibraGetStarted()._main(args, System.out);       
   	 }   
}