Fancy Diagonals
---------------
image = new SimpleImage("x.png");
image.setZoom(20);

for (pixel : image) {
  if (pixel.getX() + pixel.getY() == image.getHeight() - 1) {
    pixel.setRGB(255, 0, 255);
  }

}

print(image);

Make a border
-------------
image = new SimpleImage("x.png");
image.setZoom(20);

for (pixel : image) {
  if(image.countNeighbors(pixel) < 9) {
    pixel.setRGB(0, 255, 0);
  }
}

print(image);

Fancier Diagonals
-----------------
image = new SimpleImage("x.png");
image.setZoom(20);

for (pixel : image) {
  if (pixel.getX() + pixel.getY() == image.getHeight() - 1) {
    pixel.setRGB(255, 0, 255);
  } else {
    pixel.setRGB(0, 255, 0);
  }

}

print(image);

Combining Conditionals
----------------------
image = new SimpleImage("x.png");
image.setZoom(20);

for (pixel : image) {
  if(pixel.getX() >= image.getWidth() / 2 &&
     pixel.getY() < image.getHeight() / 2) {
    pixel.setRGB(255, 0, 255);
  }
}

print(image);


Edge Detection
--------------
image = new SimpleImage("poppy.jpg");
result = new SimpleImage("poppy-blur.jpg");
result.setSameSize(image);
result.setZoom(0.5);

for (pixel : image) {
  resultPixel = result.getPixel(pixel.getX(), pixel.getY());
  resultPixel.setRGB(255, 255, 255);
  for (neighbor : image.getNeighbors(pixel)) {
    if (pixel.isDifferentFrom(neighbor, 10)) {
      resultPixel.setRGB(0, 0, 0);
    }
  }
}

print(result);