You can use most Jitter objects within Java. In this case you would simply use jit.noise.

public class NoiseTester extends MaxObject { private JitterMatrix mx; private JitterObject noise;

public NoiseTester() { mx = new JitterMatrix( 4, "char", 1280, 720 ); noise = new JitterObject( "jit.noise" ); }

public void bang() { noise.matrixcalc( mx, mx ); outlet( 0, "jit_matrix", mx.getName() ); } }

sorry to be unprecise (again). in fact I was more interested to find a "quick pixel per pixel" method. I found a method with array but I read that int java is about 4 bytes, right? so if a range value of 0-255 is sufficient in the case of a char matrice, it could be 4 times quicker using an array with a type data using 1 bytes only no ? but I don't know if this is possible to do

So using array I found this :

import com.cycling74.max.*; import com.cycling74.jitter.*; import java.util.Random;

public class max_t extends MaxObject {

JitterMatrix outTest;

Random rand;

int w = 1280; int h = 720; int[] argb = new int[w*h*4];

public max_t(String context) { declareIO(1, 2); // declare 1 inlets, 1 outlet outTest = new JitterMatrix(4,"Char", w, h);

}

public void bang() {

for(int i = 0 ; i < w*h; i++) { argb[i*4] = 255; argb[i*4+1] = (int) (Math.random() * 255); argb[i*4+2] = (int) (Math.random() * 255); argb[i*4+3] = (int) (Math.random() * 255); }

outlet(1, argb.length); outTest.copyArrayToMatrix(argb); outlet(0, "jit_matrix", outTest.getName()); } }