marlon

PImage img;
int slices = 21;
float unit, theta;

void setup() {
  img = loadImage("tmp-0.gif");
  size(img.width, img.height);
  unit=height/slices;
  frameRate(10);
}

void draw() {
  img = loadImage("tmp-"+(frameCount-1)%21+".gif");
  image(img, 0, 0);
  for (int i=0; i<slices; i++) {
    //int i=5;
    float edgeX = map(sin(theta+i*(TWO_PI/slices)), -1, 1, 0, width*.05);
    float edgeY = map(sin(theta+i*(TWO_PI/slices)), -1, 1, 0, height*.05);
    int y = int(i*unit);
    blend(img, 0, y, width, int(unit), int(-edgeX), int(y-edgeY), int(width+edgeX), int(unit+2*edgeY), SCREEN);
  }
  theta += TWO_PI/slices;
  //if (frameCount<slices+1) saveFrame("image-####.gif");
  //if (frameCount==slices) noLoop();
}