int squareSize=30;
 
void setup() {
  size(800,600,P3D);
  
}
void draw() {
  background(#000000);
  fill(255);
  
  translate(width/3,height*.25,mouseY);//resets zero cumulative
  
  rect(0,150,squareSize, squareSize);
  translate(0,0,-200);
 
  rect(0,150,squareSize, squareSize);
  
  translate(0,0,-200);
 
    
  rect(0,150,squareSize, squareSize);
  translate(0,0,-200);
 rect(0,150,squareSize, squareSize);
  translate(0,0,-200);
 
  rect(0,150,squareSize, squareSize);
  
  translate(0,0,-200);
 
    
  rect(0,150,squareSize, squareSize);
  translate(0,0,-200);
 
  rect(0,150,squareSize, squareSize);
  
  translate(0,0,-200);
  //second row
 translate(width/3,height*.25,mouseY);
  rect(100,150,squareSize, squareSize);
  translate(10,0,-300);
  
  rect(0,150,squareSize, squareSize);
  translate(0,0,-300);
  

 
  rect(0,150,squareSize, squareSize);
  translate(0,0,-300);

  rect(0,150,squareSize, squareSize);
  translate(0,0,-300);
  
    rect(0,150,squareSize, squareSize);
  translate(0,0,-300);

  rect(0,150,squareSize, squareSize);
  translate(0,0,-300);
  
   rect(0,150,squareSize, squareSize);
  translate(0,0,-300);
  
    rect(0,150,squareSize, squareSize);
  translate(0,0,-300);

  rect(0,150,squareSize, squareSize);
  translate(0,0,-300);
 //3rd row
 
 translate(width/3,height*.25,mouseY);
  rect(0,150,squareSize, squareSize);
  translate(0,0,-400);
  
  rect(0,150,squareSize, squareSize);
  translate(0,0,-400);
  
  rect(0,150,squareSize, squareSize);
  translate(0,0,-400);
  
  rect(0,150,squareSize, squareSize);
  translate(0,0,-400);
  
  rect(0,150,squareSize, squareSize);
  translate(0,0,-400);
  

 
  rect(0,150,squareSize, squareSize);
  translate(0,0,-400);

  rect(0,150,squareSize, squareSize);
  translate(0,0,-400);
 
 rect(0,150,squareSize, squareSize);
  translate(0,0,-400);

  rect(0,150,squareSize, squareSize);
  translate(0,0,-400);
 
}

//spend time sketching out what you want your image gallery to look like
//in 3d space grid of rectangles 27