int numPics = 20;
float r1 = 0;
String imageName;

PImage[] pictures = new PImage[numPics];

void setup() {
  size(1000,600,P3D);
  for(int i=0; i<numPics; i++) {
    if(i<10) {
    imageName = "0" + i + ".jpg";
    }
    else {
      imageName = i + ".jpg";
    }
    pictures[i] = loadImage(imageName);
  }
  
}

void draw() {
  background(255);
  translate(width/2,0,0);
  rotate(r1);
  
  pushMatrix();
  float z = map(mouseX, 0,1000, -10000,0);
  translate(0,500,z);
  for(int n=0; n<4; n++) {
    translate(0,667,0);
    imageMode(CENTER);
    image(pictures[n], 0,0);
  }
  popMatrix();
  
  pushMatrix();
  rotate((PI*2)/5);
  translate(0,500,z);
  for(int n=4; n<8; n++) {
    translate(0,667,0);
    imageMode(CENTER);
    image(pictures[n], 0,0);
  }
  popMatrix();
  
  pushMatrix();
  rotate((PI*2)/2.5);
  translate(0,500,z);
  for(int n=8; n<12; n++) {
    translate(0,667,0);
    imageMode(CENTER);
    image(pictures[n], 0,0);
  }
  popMatrix();
   
  pushMatrix();
  rotate((PI*2)/1.25);
  translate(0,500,z);
  for(int n=12; n<16; n++) {
    translate(0,667,0);
    imageMode(CENTER);
    image(pictures[n], 0,0);
  }
  popMatrix();
  
  pushMatrix();
  rotate((PI*2)/.625);
  translate(0,500,z);
  for(int n=16; n<20; n++) {
    translate(0,667,0);
    imageMode(CENTER);
    image(pictures[n], 0,0);
  }
  popMatrix();
}

void mousePressed() {
  if(mousePressed == true) {
    r1 += ((PI*2)/5);
  }
}

void keyPressed() {
  if(key == 'u') {
    r1 += 2;
  }
  if(key == 'd') {
    translate(0,-667,0);
  }
}