Cámara con Pixcelart

Agrega un filtro de píxel art a la cámara de video

import processing.video.*;

Capture cam;

void setup() {
  size(640, 480);
  cam = new Capture(this, width, height);
  cam.start();
  rectMode(CENTER);
}

void draw() {
  background(0);
  if (cam.available()) {
    cam.read();
  }
  loadPixels();
  for (int y = 0; y < height; y++) {
    for (int x = 0; x < width / 2; x++) {
      int loc1 = x + y * width;
      int loc2 = (width - x - 1) + y * width;
      pixels[loc1] = cam.pixels[loc2];
      pixels[loc2] = cam.pixels[loc1];
    }
  }
  updatePixels();
  int rectSize = 20;
  int numRects = width / rectSize;
  for (int i = 0; i < numRects; i++) {
    for (int j = 0; j < numRects; j++) {
      int rectX = i * rectSize + rectSize / 2;
      int rectY = j * rectSize + rectSize / 2;
      float col = brightness(get(rectX, rectY));
      fill(col);
      rect(rectX, rectY, rectSize, rectSize);
    }
  }
}