gistfile1.pde

PImage poemImg;
PFont poemFont;
String sourceText[];
String displayPoemText;
int defaultXSlice = 4;
int defaultYSlice = 6;
int ySlice = defaultXSlice;
int xSlice = defaultYSlice;
int poemIndexer = 0;
boolean firstRun = true;

void setup() {
  background(51);
  poemImg = loadImage("mosiac.JPG");
  poemFont = createFont("Futura", 10, true);
  //poemImg.resize(poemImg.width / 2, poemImg.height / 2);
  poemImg.loadPixels();
  size(poemImg.width, poemImg.height);
  sourceText = loadStrings("divine.txt");
  sourceText = trim(sourceText);
}

void draw() {
  textFont(poemFont);
  if (firstRun) {
    displayPoemText = buildPoem(poemImg, sourceText);
    firstRun = false;
  }
  for (int x = 0; x < poemImg.width; x = x + xSlice) {
    for (int y = 0; y < poemImg.height; y = y + ySlice) {
      fill(poemImg.get(x, y));
      text(displayPoemText.charAt(poemIndexer), x, y);
      poemIndexer = poemIndexer + 1;
    }
  }
  noLoop();
}

String buildPoem(PImage img, String srcText[]) {
  String poem = " ";
  for (int i = 0; i < srcText.length; i = i + 1) {
    poem = poem + srcText[i];
  }
  return poem;
}