float top, bottom, right, left, varient, mult, vibration;
float[] rgb = new float[3];

void setup() 
{
  size( 640, 512 );
  background( 0 );
  strokeWeight( 1 );
  
  mult = width / 213;
  varient = mult / 3;
  vibration = 2;
  
  top = mult * 12;
  bottom = height + 50;
  left = right = 0;
  
  rgb[0] = random( 0, 50 );
  rgb[1] = random( 0, 50 );
  rgb[2] = random( 0, 50 );
  
  while ( top < bottom ) {
  
    left = right += 1;
    
    if ( left > width ) {
      
      left = right = 0;
      top += ( ( top / ( mult * 2 ) ) * mult );
      if ( top < -10 ) top = -10;
      varient += varient / 3;
      
      float brightnessIncrease = mult * 7;
      rgb[0] += brightnessIncrease + random( mult, mult );
      rgb[1] += brightnessIncrease + random( mult, mult );
      rgb[2] += brightnessIncrease + random( mult, mult );
      
      if ( rgb[0] > 255 ) { rgb[0] = 255; }
      if ( rgb[1] > 255 ) { rgb[1] = 255; }
      if ( rgb[2] > 255 ) { rgb[2] = 255; }
    }
    
    top += random( ( varient * -1 ), varient );
    rgb[0] += random( vibration * -1, vibration );
    rgb[1] += random( vibration * -1, vibration );
    rgb[2] += random( vibration * -1, vibration );
    
    stroke( int( rgb[0] ), int( rgb[1] ), int( rgb[2] ) );
    line(left, int(top), right, bottom);
  }
}