Sample for class of a time based slideshow

Slideshow Sketch.pde

/* Slideshow Sketch 
Steve Lambert October 27, 2015
v.01

Note: Add your own images in a data folder to make it work
*/

float time;
float currentTime;

PImage acapulco;
PImage acapulco2;
PImage tape;

void setup(){
  size(720,480);
  acapulco = loadImage("acapulco.png"); // Load the image into the program
  acapulco2 = loadImage("acapulco2.png");
  tape = loadImage("tape.png");
  time = 0;
} // end setup


void draw(){
  currentTime = millis() - time; // what it the current time?
  println("currentTime = " + currentTime/1000);
  println("millis = " + millis());
  println("time = " + time);
  
  if (currentTime > 0 && currentTime < 1000){
    image(acapulco, 0 , 0, 720, 480);
  } 
  if (currentTime > 1001 && currentTime < 2000){ 
  image(acapulco2, 0 , 0, 720, 480);
  }
  if (currentTime > 2001 && currentTime < 3000){
  image(tape, 0 , 0, 720, 480);
  } 
  if (currentTime > 3001){
    time = millis();
  }
} // end draw