PImage wormImg, wormTexture;
  int[] reg = new int[15];
  
  void setup() {
    size(640, 360);
    noSmooth();
  
    // Reference image used to transpose texture 
    wormImg = loadImage("wormhole.png");
    wormImg.resize(width, height);
    wormImg.loadPixels();
  
    // Texture image array
    wormTexture = loadImage("texture.gif");
    wormTexture.loadPixels();
  }
  
  // Moves the bottom row of pixels to the top and shifting remaining pixels 1 over
  void shiftup() {
    for (int k = 0; k < 15; k++) {
      reg[k] = wormTexture.pixels[k];
    }
  
    for (int k = 15; k < 225; k++) {
      wormTexture.pixels[k-15] = wormTexture.pixels[k];
    }
    for (int k = 0; k < 15; k++) {
      wormTexture.pixels[k+210] = reg[k];
    }
  }
  
  // Moves left column of pixels to the right and shifting remaining pixels 1 over
  void shiftright() {
    for(int k = 0; k < 15; k++) {
      reg[k] = wormTexture.pixels[15*k+14];
      for(int i = 14;i > 0; i--) {
          wormTexture.pixels[15*k+i] = wormTexture.pixels[15*k+(i-1)];
      }
      wormTexture.pixels[15*k] = reg[k];
    }
  }
  
  void draw() {
    // Load pixel data array
    loadPixels();
  
    // Loop through all pixels
    for (int i = 0; i < pixels.length; i++){
      // Map texture to wormhole in a bit shift blue 
      pixels[i] = wormTexture.pixels[constrain(wormImg.pixels[i] & 0xFF , 0 , 224)];
    }  
  
    updatePixels();
  
    shiftright();
    shiftup();
  }