import processing.serial.*;    
Serial myPort;    
String data="" ;  
PFont  myFont;    
  
void setup(){  
  size(1366,900);   
  background(0);  
  myPort = new Serial(this, "COM3", 9600);  
  myPort.bufferUntil('\n');  
}  
  
void draw(){  
  background(0);  
  textAlign(CENTER);  
  fill(255);  
  text(data,820,400);  
  textSize(100);  
  fill(#4B5DCE);  
  text("              Distance :        cm",450,400);  
  noFill();  
  stroke(#4B5DCE);  
}
void serialEvent(Serial myPort){  
   data=myPort.readStringUntil('\n');  
}