//PROCESSING


// This program takes ASCII-encoded strings
// from the serial port at 9600 baud and graphs them. It expects values in the
// range 0 to 1023, works on tab deliminated values followed by a new line by buffering up to newline in setup
// then reading each element in to a variable by incrementing through the tab characters in the string variable

// Created 20 Apr 2005
// Updated 18 Jan 2008
// by Tom Igoe
// This example code is in the public domain.
// Modified for 2D memsic accelerometer by C Rand April 2010.

import processing.serial.*;

Serial myPort;	  // The serial port
int xPos = 1;	   // horizontal position of the graph
PFont font;		//variable to hold font

void setup () {
  // set the window size:
  size(640,480);	  

  // List all the available serial ports
  println(Serial.list());
  // I know that the first port in the serial list on my mac
  // is always my  Arduino, so I open Serial.list()[0].
  // Open whatever port is the one you're using.
  myPort = new Serial(this, Serial.list()[0], 57600);
  // don't generate a serialEvent() unless you get a newline character:
  myPort.bufferUntil('\n');
  // set inital background:
  background(0);
   //load my font
  font = loadFont("Consolas-24.vlw"); 
 
}
void draw () {
  // everything happens in the serialEvent()
}

void serialEvent (Serial myPort) {
  // get the first ASCII string:
  String inStringX = myPort.readStringUntil('\t');
  
  if (inStringX != null) {
    // trim off any whitespace:
    inStringX = trim(inStringX);
    // convert to an int and map to upper half of the screen height:
	float inByteX = float(inStringX);
     println(inStringX); 
	  inByteX = map(inByteX, 0, 1023, height/2 , height);
    // draw the X line by varying line height:
    
    stroke(50,55,200);
    line(xPos, height/2, xPos, height - inByteX);

  // get the second ASCII string:
	String inStringY = myPort.readStringUntil('\n');



  // convert to an int and map to lower half the screen height:
	float inByteY = float(inStringY); 
	  inByteY = map(inByteY, 0,1023, 0, height/2);


     // draw the Y line by varying line height:
    stroke(50,100,255);
    line(xPos, height, xPos, height - inByteY);
    
    //Draw readings as text
    //Trying to draw readings at text here
    //Makes program readings lag behind the accelerometer motion by 5 seconds
    //great response time if you comment out the following text chunk
    

    textFont(font); 
	fill(0, 102, 153);
	  text(inStringX, 15, 30); 
	fill(0, 102, 153);
	  text(inStringY, 15, 60);



    // at the edge of the screen, go back to the beginning:
    if (xPos >= width) {
	xPos = 0;
	background(0); 
    } 
    else {
	// increment the horizontal position:
	xPos++;
    }
  }
}