/**
 * Simple Read
 * 
 * Read data from the serial port and change the color of a rectangle
 * when a switch connected to a Wiring or Arduino board is pressed and released.
 * This example works with the Wiring / Arduino program that follows below.
 */


import processing.serial.*;

Serial myPort;  // Create object from Serial class
int val;      // Data received from the serial port

int square_size = 40;
int square_gap = 4;
int square_space = (square_size + square_gap);
int max_distance = 650;
int max_color = 650;

void setup() 
{
  size(360, 360);
  colorMode(HSB, 1000);
  // I know that the first port in the serial list on my mac
  // is always my  FTDI adaptor, so I open Serial.list()[0].
  // On Windows machines, this generally opens COM1.
  // Open whatever port is the one you're using.
  print(Serial.list());
  String portName = Serial.list()[0];
  myPort = new Serial(this, portName, 115200);
}

boolean record_started=false;
String data="";

void draw()
{
  
  
  if ( myPort.available() > 0) {  // If data is available,
    String inBuffer = myPort.readString();
    
    String[] lines = inBuffer.split("\n"); 
    
    for(int index = 0; index<lines.length; index++){  
      if ( lines[index].startsWith(">distance:")){
        data = lines[index];
        record_started=true;
        continue;
      }
      if(record_started){
        data += lines[index];
        if(count(data) >= 64){
          record_started=false;
          display_my_data(data);
        }
      }
    }
    
  }

}


int count(String line){
  return line.length() - line.replace(",", "").length();
}



void display_my_data(String data){
  
  String distances[] = data.split(":")[1].split(",");
  print(distances[0]);
  for(int row=0; row < 8; row++){
      for(int col=0; col < 8; col++){
        int distance = int(distances[row+8*col]);
        if( distance >max_distance)distance = max_distance;
        fill(color(distance * max_color/ max_distance, 1000, 1000));
        
        square(row * square_space + square_gap, col * square_space + square_gap, square_size);
        
      }
    }
  
}

/*

// Wiring / Arduino Code
// Code for sensing a switch status and writing the value to the serial port.

int switchPin = 4;                       // Switch connected to pin 4

void setup() {
  pinMode(switchPin, INPUT);             // Set pin 0 as an input
  Serial.begin(9600);                    // Start serial communication at 9600 bps
}

void loop() {
  if (digitalRead(switchPin) == HIGH) {  // If switch is ON,
    Serial.write(1);               // send 1 to Processing
  } else {                               // If the switch is not ON,
    Serial.write(0);               // send 0 to Processing
  }
  delay(100);                            // Wait 100 milliseconds
}

*/