//import processing.opengl.*;

int zoom = 0;
int diameter = 25;

void setup () {
  //  size(400,300,OPENGL);
  size(400,300,P3D);     
  //      smooth();
  stroke(0);
  noStroke();
  fill(255,104);
}

void draw() {
  background(0);
  translate(width/2,height/2,-height/2+zoom);
  rotateY(radians(mouseX));
  rotateX(radians(mouseY));
  
  for(int z=-height/2; z<height/2; z+=height/10) {
    pushMatrix();
    translate(0,0,z);
  
    for(int x=-height/2; x<height/2; x+=height/10) {
      pushMatrix();
      translate(x,0,0);
  
      for(int y=-height/2; y<height/2; y+=height/10) {
        pushMatrix();
        translate(0,y+diameter/2,0);
        box(diameter*.6);
        //                ellipse(0,0,diameter,diameter);
        popMatrix();
      }
  
      popMatrix();
    }
  
    popMatrix();
  }
}

void keyPressed(){
  if(key==CODED){
    if(keyCode==UP){
      zoom+=25;
    }
    if(keyCode==DOWN){
      zoom-=25;
    }
  }
}