/**
 * HotDotShot (blech) by Srikanth Narayan 
 * Date 3 Oct 2007
 *
 * Based on Mirror 2 by Daniel Shiffman. 
 * 
 * Each pixel from the video source is drawn as a rectangle with size based on brightness.  
 */
 
import processing.video.*;
import processing.serial.*;

// Size of each cell in the grid
int cSize = 5;
// Number of columns and rows in our system
int cols, rows;
// Variable for capture device
Capture video;

Serial port;
String buf = "";
String portname = "/dev/tty.usbserial-A4001nCl";
int cr = 13;  // ASCII return   == 13
int lf = 10;  // ASCII linefeed == 10
int colour =268;
int shot=0;
int shotPrevious=0;
//PImage scrShot;

void setup() {
  size(630, 480, P3D);
  //set up columns and rows
  cols = width / cSize;
  rows = height / cSize;
  colorMode(RGB, 255, 255, 255, 100);
  rectMode(CENTER);

  // Uses the default video input, see the reference if this causes an error
  video = new Capture(this, width, height, 15);
  port = new Serial(this, portname, 9600);
  //scrShot = new PImage(640, 480);
  background(0);
}


void draw() { 
  if (video.available()) {
    //println("########################");
    video.read();
    video.loadPixels();
    
    background(0, 0, 0);

    // Begin loop for columns
    for (int i = 0; i < cols;i++) {
      // Begin loop for rows
      for (int j = 0; j < rows;j++) {

        // Where are we, pixel-wise?
        int x = i * cSize;
        int y = j * cSize;
        int loc = (video.width - x - 1) + y*video.width; // Reversing x to mirror the image

        // Each rect is colored white with a size determined by brightness
        color c = video.pixels[loc];
        float sz = (brightness(c) / 255.0) * cSize;
        fill(colour%255, colour%512, colour%768);
        //fill(c);
        noStroke();
        //rect(x + cellSize/2, y + cellSize/2, sz, sz);
        ellipse(x + cSize/2, y + cSize/2, sz, sz);
        
      }
    }
  }
}

void serialEvent(Serial p) {
  int c = port.read();
  if (c != lf && c != cr) {
    buf += char(c);
  }
  if (c == lf) {
    String[] values = buf.split(",");

    cSize = int(values[2])/50;
    if(cSize < 5) { cSize = 5; }
    if(cSize > 20) { cSize = 20; }
    cols = width / cSize;
    rows = height / cSize;

    println("csize "+ cSize);
    
    colour = int(values[1]);
    println("colour"+ colour);
    
    shotPrevious = shot;
    shot = int(values[0]);
    println("shot "+ shot);
    if(shot - shotPrevious > 250)
    {
      saveFrame(shot+".jpg");
    }
    buf = "";
  }
}