PImage img;

void setup(){
  size(400,300);
  img = loadImage("tvland.png");  

  imageMode(CENTER);
}

float s = 1.5;
//float f = 0.0;
void draw(){
background(0);
  drawZoom(s);
  s += map( mouseY,0,height,.1,-.1 );
  if(s < 1.0) {
    s = 1.666666;
  }
  if(s > 1.66666666) {
    s = 1.0;
  }


}

void drawZoom(float startscale){
  float scale = startscale;
  float w=width*scale;
  float h=height*scale;
  while(w > 1.0){
   w = width * scale;
   h = height * scale;
   drawAt(w,h);
   scale *= .6;
 }
  
}


void drawAt(float w, float h){
   image(img,200,150,w,h); 
  
}