/**
 * a colorclock by <a href="http://www.local-guru.net/blog/">guru</a>
 */
 
void setup(){
  size(200,200);
  colorMode(HSB, 360, 100, 100);
  frameRate( 25 );
}

void draw() {
  background(0);
  float f1 = map( float(hour()*60+ minute()), 0, 1440, 0, 360 );
  float f2 = map(float(minute()*60 + second()), 0, 3600, 0, 360);
  float f3 = float(second()*6);
  
  for( int i = 0; i < height/2; i++ ) {
    float a1 = map( i, 0, height/2, 0, 1);
    //a1 = sq(a1);
    a1 = a1 * 256;
    
    stroke( color(f1, 100, 100, 255 - a1 ));
    line(0, i, width, i );
    stroke( color(f2, 100, 100, a1 ));
    line(0, i, width, i );    
  }
  for( int i = 0; i < height/2; i++ ) {
    float a1 = map( i, 0,height/2, 0, 1);
    a1 = sq(a1);
    a1 = a1 * 256;
    stroke( color(f2, 100, 100, 255-a1 ));
    line(0, i+height/2, width, i+height/2 );
    stroke( color(f3, 100, 100, a1 ));
    line(0, i+height/2, width, i+height/2 );       
  }
  
  
}