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,"COM1", 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(28);

 text("www.rendonelectronica.com", width-width*0.875, height-height*0.0277);

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

 text("Dist:", 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(); 

}