Grey Pattern
/*
http://goo.gl/FHPn8
THIS IS A PROCESSING SKETCH
change file suffix .java into .pde before running
*/
void setup(){
size(1066,711);
}
//Use it without draw for quick effect//
void draw(){
for (int i=0; i<width; i++){
for (int j=0; j<height; j++){
stroke(int(abs(cos(i*j)*255)),int(abs(cos(i*j)*255)));
point(i,j);
}
}
}