How to make a RADAR

import processing.serial.*; // imports library for serial communication

import java.awt.event.KeyEvent; // imports library for reading the data from the serial port

import java.io.IOException;

Serial myPort; // defines Object Serial

// defubes variables

String angle="";

String distance="";

String data="";

String noObject;

float pixsDistance;

int iAngle, iDistance;

int index1=0;

int index2=0;

PFont orcFont;

void setup() {

  

 size (1200, 700); // ***CHANGE THIS TO YOUR SCREEN RESOLUTION***

 smooth();

 myPort = new Serial(this,"COM4", 9600); // starts the serial communication

 myPort.bufferUntil('.'); // reads the data from the serial port up to the character '.'. So actually it reads this: angle,distance.

}

void draw() {

  

  fill(98,245,31);

  // simulating motion blur and slow fade of the moving line

  noStroke();

  fill(0,4); 

  rect(0, 0, width, height-height*0.065); 

  

  fill(98,245,31); // green color

  // calls the functions for drawing the radar

  drawRadar(); 

  drawLine();

  drawObject();

  drawText();

}

void serialEvent (Serial myPort) { // starts reading data from the Serial Port

  // reads the data from the Serial Port up to the character '.' and puts it into the String variable "data".

  data = myPort.readStringUntil('.');

  data = data.substring(0,data.length()-1);

  

  index1 = data.indexOf(","); // find the character ',' and puts it into the variable "index1"

  angle= data.substring(0, index1); // read the data from position "0" to position of the variable index1 or thats the value of the angle the Arduino Board sent into the Serial Port

  distance= data.substring(index1+1, data.length()); // read the data from position "index1" to the end of the data pr thats the value of the distance

  

  // converts the String variables into Integer

  iAngle = int(angle);

  iDistance = int(distance);

}

void drawRadar() {

  pushMatrix();

  translate(width/2,height-height*0.074); // moves the starting coordinats to new location

  noFill();

  strokeWeight(2);

  stroke(98,245,31);

  // draws the arc lines

  arc(0,0,(width-width*0.0625),(width-width*0.0625),PI,TWO_PI);

  arc(0,0,(width-width*0.27),(width-width*0.27),PI,TWO_PI);

  arc(0,0,(width-width*0.479),(width-width*0.479),PI,TWO_PI);

  arc(0,0,(width-width*0.687),(width-width*0.687),PI,TWO_PI);

  // draws the angle lines

  line(-width/2,0,width/2,0);

  line(0,0,(-width/2)*cos(radians(30)),(-width/2)*sin(radians(30)));

  line(0,0,(-width/2)*cos(radians(60)),(-width/2)*sin(radians(60)));

  line(0,0,(-width/2)*cos(radians(90)),(-width/2)*sin(radians(90)));

  line(0,0,(-width/2)*cos(radians(120)),(-width/2)*sin(radians(120)));

  line(0,0,(-width/2)*cos(radians(150)),(-width/2)*sin(radians(150)));

  line((-width/2)*cos(radians(30)),0,width/2,0);

  popMatrix();

}

void drawObject() {

  pushMatrix();

  translate(width/2,height-height*0.074); // moves the starting coordinats to new location

  strokeWeight(9);

  stroke(255,10,10); // red color

  pixsDistance = iDistance*((height-height*0.1666)*0.025); // covers the distance from the sensor from cm to pixels

  // limiting the range to 40 cms

  if(iDistance<40){

    // draws the object according to the angle and the distance

  line(pixsDistance*cos(radians(iAngle)),-pixsDistance*sin(radians(iAngle)),(width-width*0.505)*cos(radians(iAngle)),-(width-width*0.505)*sin(radians(iAngle)));

  }

  popMatrix();

}

void drawLine() {

  pushMatrix();

  strokeWeight(9);

  stroke(30,250,60);

  translate(width/2,height-height*0.074); // moves the starting coordinats to new location

  line(0,0,(height-height*0.12)*cos(radians(iAngle)),-(height-height*0.12)*sin(radians(iAngle))); // draws the line according to the angle

  popMatrix();

}

void drawText() { // draws the texts on the screen

  

  pushMatrix();

  if(iDistance>40) {

  noObject = "Out of Range";

  }

  else {

  noObject = "In Range";

  }

  fill(0,0,0);

  noStroke();

  rect(0, height-height*0.0648, width, height);

  fill(98,245,31);

  textSize(25);

  

  text("10cm",width-width*0.3854,height-height*0.0833);

  text("20cm",width-width*0.281,height-height*0.0833);

  text("30cm",width-width*0.177,height-height*0.0833);

  text("40cm",width-width*0.0729,height-height*0.0833);

  textSize(40);

  text("AKSHIT'S INNOVATION", width-width*0.875, height-height*0.0277);

  text("Angle: " + iAngle +" °", width-width*0.48, height-height*0.0277);

  text("Distance: ", width-width*0.26, height-height*0.0277);

  if(iDistance<40) {

  text("        " + iDistance +" cm", width-width*0.225, height-height*0.0277);

  }

  textSize(25);

  fill(98,245,60);

  translate((width-width*0.4994)+width/2*cos(radians(30)),(height-height*0.0907)-width/2*sin(radians(30)));

  rotate(-radians(-60));

  text("30°",0,0);

  resetMatrix();

  translate((width-width*0.503)+width/2*cos(radians(60)),(height-height*0.0888)-width/2*sin(radians(60)));

  rotate(-radians(-30));

  text("60°",0,0);

  resetMatrix();

  translate((width-width*0.507)+width/2*cos(radians(90)),(height-height*0.0833)-width/2*sin(radians(90)));

  rotate(radians(0));

  text("90°",0,0);

  resetMatrix();

  translate(width-width*0.513+width/2*cos(radians(120)),(height-height*0.07129)-width/2*sin(radians(120)));

  rotate(radians(-30));

  text("120°",0,0);

  resetMatrix();

  translate((width-width*0.5104)+width/2*cos(radians(150)),(height-height*0.0574)-width/2*sin(radians(150)));

  rotate(radians(-60));

  text("150°",0,0);

  popMatrix(); 

}