I needed something to do on the airplane tripe over to Hawaii, so I took motivation from the the airport ceiling:

and made this flippy floppy animation

import processing.opengl.*;

ArrayList boxes;
PImage side1, side2;
PImage itexture1, itexture2;

int x = 0;
boolean c = true;

class mrbox {

  int x;
  int y;
  PImage t1, t2;
  int r = 0;
  int s = 100;
  int  rinc = 1;
  boolean ani=true;

  mrbox(int x, int y, PImage t1, PImage t2) {
    this.t1 = t1;
    //this.t1.blend(itexture1,0,0,100,100,0,0,100,100,MULTIPLY);

    this.t2 = t2;
    //this.t1.blend(itexture2,0,0,100,100,0,0,100,100,MULTIPLY);

    this.x = x;
    this.y = y;
    rinc = floor(random(1, 3));
    rinc = 5;
  }

  void restart() {
    ani = true;
    //rinc = floor(random(1, 10));
  }

  boolean draw() {

    pushMatrix();
    translate(x, y, -100);
    rotateX(radians(r)) ;

    if (ani) { 
      r+=rinc;

      if (r < 0 ) {
        ani=false;
        rinc = 1 * floor(random(1, 5));
        r=1;
      }

      if (r > 180) {
        ani = false;
        r=179;
        rinc = -1 * floor(random(1, 5)) ;
      }
    }

    textureMode(NORMALIZED);

    beginShape();
    texture(t1);
    vertex(0, -s/2, 1, 0, 0);
    vertex(s, -s/2, 1, 1, 0);
    vertex(s, s/2, 1, 1, 1);
    vertex(0, s/2, 1, 0, 1);  
    endShape();

    beginShape();
    texture(t2);
    vertex(0, -s/2, 2, 0, 0);
    vertex(s, -s/2, 2, 1, 0);
    vertex(s, s/2, 2, 1, 1);
    vertex(0, s/2, 2, 0, 1);
    endShape();
    popMatrix();

    return ani;
  }
}

void setup() {

  size(800, 800, OPENGL);
  side1 = loadImage("img1.jpg");
  side2 = loadImage("img2.jpg");
  itexture1 = loadImage("box1.png");

  itexture2 = loadImage("box2.png");

  boxes =new ArrayList();

  for (int x=0; x< width; x+=100) {
    for (int y=0; y < height; y+=100) {
      boxes.add( new mrbox(x, y, side1.get(x, 700-y, 100, 100), side2.get(x, y, 100, 100)) );
    }
  }
}

int z=-100;
int zinc=4;

boolean drawmore = true;

void draw() {
  background(0, 90);

  /* 
   z+=zinc;
   if (z < -1200) { 
   zinc = 4;
   }
   if (z > -300) { 
   zinc = -4;
   }
   translate(0, 0, z);
   */

  drawmore = false;
  for (int i=0; i < boxes.size(); i++) {
    mrbox b = (mrbox) boxes.get(i);
    if ( b.draw() ) {
      drawmore = true;
    }
  }

  if ( ! drawmore ) {
    for (int i=0; i < boxes.size(); i++) {
      mrbox b = (mrbox) boxes.get(i);
      b.restart();
    }
  }

  saveFrame("output/out####.jpg");
  f
}