/**
* RandomLines by <a href="http://www.local-guru.net/blog/">guru</a>
*/

void setup() {
  size(300,300);
  smooth();
  frameRate(25);
}

float a = 0;

void draw() {
  pushMatrix();
  translate(width/2,height/2);
  rotate(a);
 
  noStroke();
  fill(0, 20 );
  rect(-200,-200,400,400);
  
  strokeWeight(3);
  stroke(255);
  
  for( int i =0; i < 10; i++ ) {
    float y = random( 400 ) - 200;
    line( -200, y, 200, y );
  }

  for( int i =0; i < 10; i++ ) {
    float x = random( 400 ) - 200;
    line( x, -200, x, 200 );
  }
  popMatrix();
  a+=0.01;
}