// Import Libraries - install these if necessary.
import processing.video.*;
import gab.opencv.*;

//create Capture
Capture liveCam;
//create PImages
PImage camCapture, foregroundMask, backgroundMask, screenshot;
float comparVal = 0.25;

OpenCV opencv;

int width = 640;
int height = 480;

void setup() {
  //scene setup  
  fullScreen();
  colorMode(HSB,1,1,1);
  liveCam = new Capture(this,width,height);
  
  camCapture = createImage(width,height,HSB);
  screenshot = createImage(width,height,HSB);
  foregroundMask = createImage(width,height,HSB);
  backgroundMask = createImage(width,height,HSB);
  
  // Create the opencv object in setup, not in the draw call.
  opencv = new OpenCV(this, foregroundMask);
  
  //live Camera start
  liveCam.start();
}

void draw() {
  if (liveCam.available()) {
    liveCam.read();
  }
  
  //set camCapture PImage to be current Frame
  camCapture.set(0,0,liveCam);
  camCapture.loadPixels();

  opencv.loadImage(screenshot);
  
  // Don't do the processing in processing (Java), let opencv do the heavy lifting (save the CPU and the frames!).
  opencv.diff(camCapture);
  opencv.blur(6);
  opencv.threshold(50);
  opencv.erode();
  opencv.erode();
  opencv.erode();
  opencv.dilate();
  opencv.dilate();
  opencv.dilate();
  foregroundMask = opencv.getSnapshot();
  camCapture.blend(foregroundMask, 0, 0, width, height, 0, 0, width, height, ADD); 
  image(camCapture,0,0);
}

void mouseClicked() {
  screenshot.set(0,0,liveCam);
}