This example presents the fastest way to load a background image into Processing. To load an image as the background, it must be the same width and height as the program.

Original Example: BackgroundImage

// All Examples Written by Casey Reas and Ben Fry
// unless otherwise stated.
PImage bg;
int a; 

void setup() 
  // The background image must be the same size as the parameters
  // into the size() method. In this program, the size of "milan_rubbish.jpg"
  // is 200 x 200 pixels.
  bg = loadImage("milan_rubbish.jpg");

void draw() 

  a = (a + 1)%(width+32);
  stroke(226, 204, 0);
  line(0, a, width, a-26);
  line(0, a-6, width, a-32);