Net net;
boolean drawLinks = true;
boolean drawBackground = true;
boolean start = false;
PImage pimage;
String defaultBackground = "kdockGrey.jpg";
void setup(){
  size(450, 270);
  net = new Net(10, 8);
  PImage temp = loadImage(defaultBackground);
  pimage = new PImage(width, height);
  pimage.copy(temp, 0, 0, temp.width, temp.height, 0, 0, width, height);
}
void draw(){
  smooth();
  if(drawBackground) {
    image(pimage, 0, 0, width, height);
  }
  else{
    background(255);
  }
  net.draw();
  if(start){
    net.reactor();
  }
}
void mousePressed(){
  start = true;
}