Translating Arduino to Processing. - pulseIN

Hello all,

I have searched the web and I see that this is a common problem. First let me include the code I am working with. This is obviously for Arduino.

        #define echoPin 3 // Echo Pin
        #define trigPin 2 // Trigger Pin
        #define LEDPin 13 // Onboard LED


        int result = 0;
        int maximumRange = 200; // Maximum range needed
        int minimumRange = 0; // Minimum range needed
        long duration, distance; // Duration used to calculate distance
        int relaypin = 8;
        int relay = 0;


        void setup() {
         Serial.begin (9600);
         pinMode(trigPin, OUTPUT);
         pinMode(echoPin, INPUT);
         pinMode(8, OUTPUT);

        }

        void loop() {
        /* The following trigPin/echoPin cycle is used to determine the
         distance of the nearest object by bouncing soundwaves off of it. */ 
         digitalWrite(trigPin, LOW); 
         delayMicroseconds(2); 

         digitalWrite(trigPin, HIGH);
         delayMicroseconds(10); 

         digitalWrite(trigPin, LOW);
         duration = pulseIn(echoPin, HIGH);


         distance = duration/58.2;

         if (distance >= maximumRange || distance <= minimumRange){

         Serial.println("-1");
         if (result == 1){
            relay = 0;
         }

         }

         else {

         Serial.println(distance);

         if (result == 0 ){
           relay = 255;
         }


         }
         Serial.println("relay:");
         Serial.println(relay);
         digitalWrite(relaypin, relay);
         relay = 0;
         delay(50);
         }

Now, I would like to transfer this into Processing, but I am having some compatibility issues. What is the translation of this in Processing? The most difficult to figure out is pulseIN.

Thank you.

New Addition: Here is what I have so far in Processing.

import ddf.minim.*;
import processing.serial.*;
import org.firmata.*;
import cc.arduino.*;

int echoPin = 3; // Echo Pin
int trigPin = 2; // Trigger Pin
int LEDPin = 13;
int result = 0;
int maximumRange = 200; // Maximum range needed
int minimumRange = 0; // Minimum range needed
long duration, distance; // Duration used to calculate distance
int relaypin = 8;
int relay = 0;

Arduino arduino;
Minim minim;
AudioPlayer player;

void setup() {

 arduino = new Arduino(this, Arduino.list()[0], 9600);
 arduino.pinMode(trigPin, Arduino.OUTPUT);
 arduino.pinMode(echoPin, Arduino.INPUT);
 arduino.pinMode(8, Arduino.OUTPUT);
 minim = new Minim(this);
 player = minim.loadFile("marcus_kellis_theme.mp3");
}

void loop() {
/* The following trigPin/echoPin cycle is used to determine the
 distance of the nearest object by bouncing soundwaves off of it. */ 
 arduino.digitalWrite(trigPin, Arduino.LOW); 
 delay(2); 

 arduino.digitalWrite(trigPin, Arduino.HIGH);
 delay(10); 

 arduino.digitalWrite(trigPin, Arduino.LOW);
 duration = pulseIn(echoPin, Arduino.HIGH);


 distance = duration/58.2;

 if (distance >= maximumRange || distance <= minimumRange){

 Serial.println("-1");
 if (result == 1){
    relay = 0;
 }

 }

 else {

 Serial.println(distance);

 if (result == 0 ){
   relay = 255;
   player.play();
 }


 }
 Serial.println("relay:");
 Serial.println(relay);
 digitalWrite(relaypin, relay);
 relay = 0;
 delay(50);
 }