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

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

void draw() {
  background(0);
  
  // draw the clockhand for the hour
  pushMatrix();
  // move the hand to the center 
  translate(150,150); 
  // rotate it ( take the hour modulo 12 and add minutes / 60 to it, 
  //  then convert to radians)
  rotate( radians( 30 * ((hour() % 12 ) + float(minute())/60)));
  hand(7);
  popMatrix();
  
  // draw the clockhand for the minute
  pushMatrix();
  // move hand to the center
  translate(150,150);
  // rotate it
  rotate( radians( 6 * minute()));
  hand(8);
  popMatrix();
}

void hand( int l ) {
  int y = 0;
  for( int i=l-1; i > 0; i--) {
    fill(128,128);
    strokeWeight(3);
    stroke(255);
    ellipse( 0, 0 + y, i*i*1.1, i*i*1.1 );
    y -= i*i;
  }
}