image_mosaic.pde

import java.io.*;

PImage [] imgs;

void setup() {
  size(1200, 800);
  
  File folder = new java.io.File(dataPath(""));
  FilenameFilter jpgFilter = new java.io.FilenameFilter() {
    public boolean accept(File dir, String name) {
      return name.toLowerCase().endsWith(".jpg");
    }
  };
  String[] filenames = folder.list(jpgFilter);

  //
  imgs = new PImage[filenames.length];
  for (int i = 0; i < filenames.length; ++i) {
    println("filenames[" + i + "]=" + filenames[i]);
    imgs[i] = loadImage(filenames[i]);
    imgs[i].resize(120, 80);
  }
}

void draw() {
  int x = 0, y = 0;
  for (int i = 0; i < imgs.length; ++i) {
    image(imgs[i], x, y);
    x += imgs[i].width;
    if (x >= width) {
      x = 0;
      y += imgs[i].height;
    }
  }
}