gaga

// part of this code comes from here: https://forum.processing.org/two/discussion/4612/how-do-i-take-several-screenshots-from-the-same-part-of-the-display-and-work-with-these

import java.awt.Robot;
import java.awt.Rectangle;
import java.awt.AWTException;

PImage screenshot;
boolean smoothOn;
int x, y, step = 10;
int w = 855, h = 480, w2 = int(w*.9), h2 =int(h*.9);
boolean save = false;

void settings() {
  size(w2, h2);
}

void setup() {
}

void draw() {
  screenshot();
  modifyPixels();
  image(screenshot, 0, 0, width, height);
  if (save) saveFrame("frames/image-####.tif");
}

void screenshot() {
  try {
    Robot robot_Screenshot = new Robot();
    screenshot = new PImage(robot_Screenshot.createScreenCapture
      (new Rectangle(displayWidth-w, 170, w, h)));
  }
  catch (AWTException e) {
  }
}

void modifyPixels() {
  screenshot.loadPixels();
  for (int i=0; i<screenshot.pixels.length; i++) {
    if ( brightness(screenshot.pixels[i]) > 150) screenshot.pixels[i]  &= 0x00FFFFFF;
  }
  screenshot.updatePixels();
}

void keyReleased() {
  if (key =='s') save =! save;
}