/**
hight voltage by <a href="http://www.local-guru.net/blog">guru</a>
*/
void setup() {
  size(300, 300);
  smooth();
  frameRate(30);
  background(0);  
}

void draw() {
  fill(0,100);
  noStroke();
  rect(0,0,width,height);
  fill(255);

  stroke(200);
  strokeWeight(2);
  line( 120, 300, 90, 150 );
  line( 180, 300, 210, 150 );
  ellipse( 90, 150, 20, 20);
  ellipse( 210, 150, 20, 20);  

  float[] ofs = new float[20];
  for ( int i=0; i<20; i++) {
    float f = 20 - sq(i-10)/5;
    ofs[i] = 2*f * noise(float(i)/7+frameCount) - f;
  }

  strokeWeight(3);
  stroke(0, 0, 255); 

  for ( int i=0; i<19;i++) { 
    line( 100 + i * 5, 150 + ofs[i], 
    100 + (i+1)*5, 150 + ofs[i+1]);
  }          
  line( 195, 150+ofs[19], 200, 150);

  strokeWeight(1);
  stroke(255); 
  for ( int i=0; i<19;i++) { 
    line( 100 + i * 5, 150 + ofs[i], 
    100 + (i+1)*5, 150 + ofs[i+1]);
  }
  line( 195, 150+ofs[19], 200, 150);
}