// TEXTURE DISTORTING
// mikkel . crone . koser / www.beyondthree.com
// modifed backgroundimage example by REAS
// vertexTexture discovery by ELOUT :)
// oh well, i know the effect is very cheesy, but hey....
// QUADS ARE NICE :)

BImage a; 
int y;
float rZ = 0f;
 
void setup()  
{ 
  size(360, 360); 
  background(0, 0, 0);
  //a 200*200 pixel size image - in your data folder.
  a = loadImage("milan_rubbish.jpg");  
  noStroke();
} 
void loop(){ 
  y = max((int)((mouseY/(float)height)*90f), 4);;
  rZ = rZ + 0.05;

  translate(width/2, height/2, 400); 
  rotateZ(rZ);
  
  // ONE
  beginShape(QUADS);   
   texture(a); 
   vertex(0,0,0,          -100-y,100-y);  
   vertex(100,0,0,        -100-y,0);    
   vertex(100,100,0,      0,0);        
   vertex(0,100,0,        0,0);
  endShape(); 
  
  // TWO
  beginShape(QUADS);   
   texture(a); 
   vertex(0,0,0,           -100-y,100-y); 
   vertex(-100,0,0,        -100-y,0);    
   vertex(-100,-100,0,     0,0);        
   vertex(0,-100,0,        0,0);
  endShape(); 
  
    // THREE
    
  beginShape(QUADS);   
   texture(a); 
   vertex(0,0,0,           -100-y,100-y); 
   vertex(100,0,0,         -100-y,0);    
   vertex(100,-100,0,      0,0);        
   vertex(0,-100,0,        0,0);
  endShape(); 
  
   // FOUR
  beginShape(QUADS);   
   texture(a); 
   vertex(0,0,0,            -100-y,100-y); 
   vertex(-100,0,0,         -100-y,0);    
   vertex(-100,100,0,       0,0);        
   vertex(0,100,0,          0,0);
  endShape(); 
}