Rabu, 12 Desember 2018

P Web - EAS


Pengerjaan EAS berupa pendaftaran siswa menggunakan Bootstrap.

Rancangan Database
Isinya:
  • Id merupakan nomor unik siswa, sebagai primary key
  • Username siswa
  • Email siswa 
  • Password
  • Nama lengkap siswa
  • NISN
  • Alamat siswa
  • Nomor telepon
  • School1 sebagai nama SMP
  • School2 sebagai SMA tujuan
Rancangan Interface


Dokumentasi Implementasi
config.php
 <?php  
 $db_host = "localhost";  
 $db_user = "root";  
 $db_pass = "";  
 $db_name = "pendaftaransiswa";  
 try {    
   //create PDO connection   
   $db = new PDO("mysql:host=$db_host;dbname=$db_name", $db_user, $db_pass);  
 } catch(PDOException $e) {  
   //show error  
   die("Terjadi masalah: " . $e->getMessage());  
 }  

auth.php
 <?php  
 session_start();  
 if(!isset($_SESSION["user"])) header("Location: login.php");  

index.php
 <?php   
 require_once("config.php");  
 if(isset($_POST['login'])){  
   $username = filter_input(INPUT_POST, 'username', FILTER_SANITIZE_STRING);  
   $password = filter_input(INPUT_POST, 'password', FILTER_SANITIZE_STRING);  
   $sql = "SELECT * FROM users WHERE username=:username OR email=:email";  
   $stmt = $db->prepare($sql);  
   // bind parameter ke query  
   $params = array(  
     ":username" => $username,  
     ":email" => $username  
   );  
   $stmt->execute($params);  
   $user = $stmt->fetch(PDO::FETCH_ASSOC);  
   // jika user terdaftar  
   if($user){  
     // verifikasi password  
     if(password_verify($password, $user["password"])){  
       // buat Session  
       session_start();  
       $_SESSION["user"] = $user;  
       // login sukses, alihkan ke halaman timeline  
       header("Location: timeline.php");  
     }  
   }  
 }  
 ?>  
 <!DOCTYPE html>  
 <html lang="en">  
 <head>  
   <meta charset="UTF-8">  
   <meta name="viewport" content="width=device-width, initial-scale=1.0">  
   <meta http-equiv="X-UA-Compatible" content="ie=edge">  
   <title>Pendaftaran SMA Negeri Kabupaten Karanganyar</title>  
   <link rel="stylesheet" href="css/bootstrap.min.css" />  
 </head>  
 <body class="bg-light">  
 <div class="container mt-5">  
   <div class="row">  
     <div class="col-md-12">  
       <div class="card">  
         <div class="card-body text-center">  
           <img class="img img-responsive mb-3" height="60" src="img/kra.png" />   
           <img class="img img-responsive mb-3" height="60" src="img/kmd.png" />  
           <h3>Pendaftaran SMA Negeri Kabupaten Karanganyar</h3>  
           <p>Dinas Pendidikan Pemuda dan Olahraga <b>Kabupaten Karanganyar</b></p>  
         </div>  
       </div>  
     </div>  
     <br>  
     <br>  
     <div class="col-md-8">  
     <form action="" method="POST">  
       <br>  
       <div class="form-group">  
         <label for="username">Username</label>  
         <input class="form-control" type="text" name="username" placeholder="Username atau email" />  
       </div>  
       <div class="form-group">  
         <label for="password">Password</label>  
         <input class="form-control" type="password" name="password" placeholder="Password" />  
       </div>  
       <input type="submit" class="btn btn-success btn-block" name="login" value="Masuk" />  
     </form>  
     </div>  
     <div class="col-md-4">  
       <br>  
       <br>  
       <div class="card">  
         <div class="card-body text-center">  
           <h4>Belum punya akun?</h4>  
           <p>Tidak perlu waktu lama untuk mendaftarnya</p>  
           <a class="btn btn-primary" href="register.php">Daftar</a>  
         </div>  
       </div>  
       <br>  
     </div>  
   </div>  
 </div>  
 </body>  
 </html>  

register.php
 <?php  
 require_once("config.php");  
 if(isset($_POST['register'])){  
   // filter data yang diinputkan  
   $name = filter_input(INPUT_POST, 'name', FILTER_SANITIZE_STRING);  
   $username = filter_input(INPUT_POST, 'username', FILTER_SANITIZE_STRING);  
   // enkripsi password  
   $password = password_hash($_POST["password"], PASSWORD_DEFAULT);  
   $email = filter_input(INPUT_POST, 'email', FILTER_VALIDATE_EMAIL);  
   // menyiapkan query  
   $sql = "INSERT INTO users (name, username, email, password)   
       VALUES (:name, :username, :email, :password)";  
   $stmt = $db->prepare($sql);  
   // bind parameter ke query  
   $params = array(  
     ":name" => $name,  
     ":username" => $username,  
     ":password" => $password,  
     ":email" => $email  
   );  
   // eksekusi query untuk menyimpan ke database  
   $saved = $stmt->execute($params);  
   // jika query simpan berhasil, maka user sudah terdaftar  
   // maka alihkan ke halaman login  
   if($saved) header("Location: index.php");  
 }  
 ?>  
 <!DOCTYPE html>  
 <html lang="en">  
 <head>  
   <meta charset="UTF-8">  
   <meta name="viewport" content="width=device-width, initial-scale=1.0">  
   <meta http-equiv="X-UA-Compatible" content="ie=edge">  
   <title>Register</title>  
   <link rel="stylesheet" href="css/bootstrap.min.css" />  
 </head>  
 <body class="bg-light">  
 <div class="container mt-5">  
   <div class="row">  
      <div class="col-md-12">  
       <div class="card">  
         <div class="card-body text-center">  
           <img class="img img-responsive mb-3" height="60" src="img/kra.png" />   
           <img class="img img-responsive mb-3" height="60" src="img/kmd.png" />  
           <h3>Pendaftaran SMA Negeri Kabupaten Karanganyar</h3>  
           <p>Dinas Pendidikan Pemuda dan Olahraga <b>Kabupaten Karanganyar</b></p>  
         </div>  
       </div>  
     </div>  
     <br>  
     <br>  
     <div class="col-md-8">  
     <form action="" method="POST">  
       <br>  
       <div class="form-group">  
         <label for="name">Nama Lengkap</label>  
         <input class="form-control" type="text" name="name" placeholder="Nama kamu" />  
       </div>  
       <div class="form-group">  
         <label for="username">Username</label>  
         <input class="form-control" type="text" name="username" placeholder="Username" />  
       </div>  
       <div class="form-group">  
         <label for="email">Email</label>  
         <input class="form-control" type="email" name="email" placeholder="Alamat Email" />  
       </div>  
       <div class="form-group">  
         <label for="password">Password</label>  
         <input class="form-control" type="password" name="password" placeholder="Password" />  
       </div>  
       <input type="submit" class="btn btn-success btn-block" name="register" value="Daftar" />  
     </form>  
     </div>  
     <div class="col-md-4">  
       <br>  
       <br>  
       <div class="card">  
         <div class="card-body text-center">  
           <h4>Sudah punya akun?</h4>  
           <p>Masuk sekarang</p>  
           <a class="btn btn-primary" href="index.php">Masuk</a>  
         </div>  
       </div>  
       <br>  
     </div>  
   </div>  
 </div>  
 </body>  
 </html>  

timeline.php
 <?php require_once("auth.php"); ?>  
 <!DOCTYPE html>  
 <html lang="en">  
 <head>  
   <meta charset="UTF-8">  
   <meta name="viewport" content="width=device-width, initial-scale=1.0">  
   <meta http-equiv="X-UA-Compatible" content="ie=edge">  
   <title>Profil Siswa</title>  
   <link rel="stylesheet" href="css/bootstrap.min.css" />  
 </head>  
 <body class="bg-light">  
 <div class="container mt-5">  
   <div class="row">  
     <div class="col-md-4">  
       <div class="card">  
         <div class="card-body text-center">  
           <img class="img img-responsive mb-3" height="90" src="img/kra.png" />   
           <img class="img img-responsive mb-3" height="90" src="img/kmd.png" />  
           <p>Dinas Pendidikan Pemuda dan Olahraga <b>Kabupaten Karanganyar</b></p>  
           <hr>  
           <h3><?php echo $_SESSION["user"]["name"] ?></h3>  
           <p><?php echo $_SESSION["user"]["username"] ?></p>  
           <p><a class="btn btn-danger" href="logout.php">Logout</a></p>  
         </div>  
       </div>  
       <br>  
     </div>  
     <br>  
     <div class="col-md-8">  
       <div class="card mb-3">  
         <div class="card-body">  
         <h3>Pendaftaran</h3>  
         Sekolah yang dipilih  
         <br><b><?php echo $_SESSION["user"]["school2"] ?></b>  
         <hr>  
         <a href="daftarsekolah.php" class="btn btn-primary">Daftar</a>  
         <a href="rincian.php" class="btn btn-success">Rincian</a>  
         </div>  
       </div>  
       <div class="card mb-3">  
         <div class="card-body">  
         <h3>Data siswa</h3>  
         Username  
         <br><b><?php echo $_SESSION["user"]["username"] ?></b>  
         <hr>  
         Email  
         <br><b><?php echo $_SESSION["user"]["email"] ?></b>  
         <hr>  
         Nama  
         <br><b><?php echo $_SESSION["user"]["name"] ?></b>  
         <hr>  
         NISN  
         <br><b><?php echo $_SESSION["user"]["nisn"] ?></b>  
         <hr>  
         Alamat  
         <br><b><?php echo $_SESSION["user"]["adress"] ?></b>  
         <hr>  
         Telepon  
         <br><b><?php echo $_SESSION["user"]["phone"] ?></b>  
         <hr>  
         Sekolah Asal  
         <br><b><?php echo $_SESSION["user"]["school1"] ?></b>  
         <hr>  
         <a href="edit.php" class="btn btn-primary">Edit</a>  
         </div>  
       </div>  
     </div>  
   </div>  
 </div>  
 </body>  
 </html>  

edit.php
 <?php require_once("auth.php"); ?>  
 <!DOCTYPE html>  
 <html lang="en">  
 <head>  
   <meta charset="UTF-8">  
   <meta name="viewport" content="width=device-width, initial-scale=1.0">  
   <meta http-equiv="X-UA-Compatible" content="ie=edge">  
   <title>Edit Profil</title>  
   <link rel="stylesheet" href="css/bootstrap.min.css" />  
 </head>  
 <body class="bg-light">  
 <div class="container mt-5">  
   <div class="row">  
     <div class="col-md-12">  
     <a href="timeline.php" class="btn btn-secondary">Kembali</a>  
     <a href="#" class="btn btn-light">Edit Profil</a>  
     <br>  
     <form action="prosesedit.php" method="POST">  
       <br>  
       <div class="form-group">  
         <label for="username">Username</label>  
         <input class="form-control" type="text" name="username" placeholder="Username atau email" value="<?php echo $_SESSION["user"]["username"] ?>" />  
       </div>  
       <div class="form-group">  
         <label for="email">Email</label>  
         <input class="form-control" type="text" name="email" placeholder="Email" value="<?php echo $_SESSION["user"]["email"] ?>" />  
       </div>  
       <div class="form-group">  
         <label for="name">Nama</label>  
         <input class="form-control" type="text" name="name" placeholder="Nama" value="<?php echo $_SESSION["user"]["name"] ?>" />  
       </div>  
       <div class="form-group">  
         <label for="adress">NISN</label>  
         <input class="form-control" type="text" name="nisn" placeholder="NISN" value="<?php echo $_SESSION["user"]["nisn"] ?>" />  
       </div>  
       <div class="form-group">  
         <label for="adress">Alamat</label>  
         <input class="form-control" type="text" name="adress" placeholder="Alamat" value="<?php echo $_SESSION["user"]["adress"] ?>" />  
       </div>  
       <div class="form-group">  
         <label for="phone">Telepon</label>  
         <input class="form-control" type="text" name="phone" placeholder="Telepon" value="<?php echo $_SESSION["user"]["phone"] ?>" />  
       </div>  
       <div class="form-group">  
         <label for="phone">Sekolah Asal</label>  
         <input class="form-control" type="text" name="school" placeholder="Asal SMP" value="<?php echo $_SESSION["user"]["school1"] ?>" />  
       </div>  
       <input type="submit" class="btn btn-success btn-block" name="submit" value="submit" />  
     </form>  
     <br>  
     </div>  
     <div class="col-md-6">  
       <!-- isi dengan sesuatu di sini -->  
     </div>  
   </div>  
 </div>  
 </body>  
 </html>  

prosesedit.php
 <?php  
 include("config.php");  
 require_once("auth.php");  
 // cek apakah tombol simpan sudah diklik atau blum?  
 if(isset($_POST['submit'])){  
   // ambil data dari formulir  
   $id = $_POST['id'];  
   $username = $_POST['username'];  
   $email = $_POST['email'];  
   $name = $_POST['name'];  
   $adress = $_POST['adress'];  
   $phone = $_POST['phone'];  
   $school1 = $_POST['school1'];  
   $nisn = $_POST['nisn'];  
   // buat query update  
   $sql = "UPDATE users SET username='$username', email='$email', name='$name', adress='$adress', phone='$phone', school1='$school1' nisn='$nisn' WHERE id=$id";  
   $query = mysqli_query($db, $sql);  
   // apakah query update berhasil?  
   if( $query ) {  
     // kalau berhasil alihkan ke halaman list-siswa.php  
     header('Location: timeline.php');  
   } else {  
     // kalau gagal tampilkan pesan  
     die("Gagal menyimpan perubahan...");  
   }  
 } else {  
   die("Akses dilarang...");  
 }  
 ?>  

daftarsekolah.php
 <?php require_once("auth.php");   
 require_once("config.php");  
 ?>  
 <!DOCTYPE html>  
 <html lang="en">  
 <head>  
   <meta charset="UTF-8">  
   <meta name="viewport" content="width=device-width, initial-scale=1.0">  
   <meta http-equiv="X-UA-Compatible" content="ie=edge">  
   <title>Daftar Sekolah</title>  
   <link rel="stylesheet" href="css/bootstrap.min.css" />  
 </head>  
 <body class="bg-light">  
 <div class="container mt-5">  
   <a href="timeline.php" class="btn btn-secondary">Kembali</a>  
   <a href="#" class="btn btn-light">Daftar SMA</a>  
   <div class="row">  
     <div class="col-md-12">  
     <br>  
     <div class="card mb-3">  
         <div class="card-body">  
         Nama  
         <br><b><?php echo $_SESSION["user"]["name"] ?></b>  
         <hr>  
         NISN  
         <br><b><?php echo $_SESSION["user"]["nisn"] ?></b>  
         <hr>  
         Alamat  
         <br><b><?php echo $_SESSION["user"]["adress"] ?></b>  
         <hr>  
         Telepon  
         <br><b><?php echo $_SESSION["user"]["phone"] ?></b>  
         <hr>  
         Sekolah Asal  
         <br><b><?php echo $_SESSION["user"]["school1"] ?></b>  
         <hr>  
         Pastikan data terisi dengan lengkap dan benar! <a href="edit.php" class="btn btn-primary">Lengkapi</a>  
         </div>  
     </div>  
     <form action="prosesdaftar.php" method="POST">  
       <div class="form-group has-default">  
         <label class="form-group has-default" for="school2">Pilih Sekolah </label>  
           <div class="form-group has-default">  
             <select name="school2" id="school2" class="form-control">  
               <option></option>  
               <option>SMAN 1 Karanganyar</option>  
               <option>SMAN 2 Karanganyar</option>  
               <option>SMAN Karangpandan</option>  
               <option>SMAN Mojogedang</option>  
               <option>SMAN Kerjo</option>  
               <option>SMAN Kebakkramat  
               <option>SMAN Coloamadu</option></option>  
             </select>  
           </div>  
           <br>  
       </div>  
       <input type="submit" name="submit" value="submit" class="btn btn-success btn-block" />  
     </form>  
     <br>  
     </div>  
     <div class="col-md-6">  
       <!-- isi dengan sesuatu di sini -->  
     </div>  
   </div>  
 </div>  
 </body>  
 </html>  

prosesdaftar.php
 <?php   
 // koneksi database  
 include 'config.php';  
 // menangkap data yang di kirim dari form  
 $school2 = $_POST['school2'];  
 // menginput data ke database  
 mysqli_query($db,"insert into user (school2) values('$school2')");  
 // mengalihkan halaman kembali ke index.php  
 header("location:timeline.php");  
 ?>  

rincian.php
 <?php require_once("auth.php");   
 require_once("config.php");  
 ?>  
 <!DOCTYPE html>  
 <html lang="en">  
 <head>  
   <meta charset="UTF-8">  
   <meta name="viewport" content="width=device-width, initial-scale=1.0">  
   <meta http-equiv="X-UA-Compatible" content="ie=edge">  
   <title>Rincian</title>  
   <link rel="stylesheet" href="css/bootstrap.min.css" />  
   <meta name="viewport" content="width=device-width, initial-scale=1">  
   <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css">  
 </head>  
 <body class="bg-light">  
 <div class="container mt-5">  
   <div class="row">  
     <div class="col-md-12">  
     <div class="card mb-3">  
       <br>  
       <div class="card-body text-center">  
         <br>  
           <img class="img img-responsive mb-3" height="60" src="img/kra.png" />   
           <img class="img img-responsive mb-3" height="60" src="img/kmd.png" />  
           <h3>Formulir Pendaftaran</h3>  
           <p>Dinas Pendidikan Pemuda dan Olahraga <b>Kabupaten Karanganyar</b></p>  
       </div>  
         <div class="card-body">  
         Nama  
         <br><b><?php echo $_SESSION["user"]["name"] ?></b>  
         <hr>  
         NISN  
         <br><b><?php echo $_SESSION["user"]["nisn"] ?></b>  
         <hr>  
         Alamat  
         <br><b><?php echo $_SESSION["user"]["adress"] ?></b>  
         <hr>  
         Telepon  
         <br><b><?php echo $_SESSION["user"]["phone"] ?></b>  
         <hr>  
         Sekolah Asal  
         <br><b><?php echo $_SESSION["user"]["school1"] ?></b>  
         <hr>  
         Sekolah Pilihan  
         <br><b><?php echo $_SESSION["user"]["school2"] ?></b>  
         </div>  
     </div>  
     <a href="rincian.php" class="btn btn-success"><i class="fa fa-file"></i> Unduh sebagai PDF  
     </a>  
     <br>  
     <br>  
     </div>  
     <div class="col-md-6">  
       <!-- isi dengan sesuatu di sini -->  
     </div>  
   </div>  
 </div>  
 </body>  
 </html>  

logout.php
 <?php  
 session_start();  
 session_unset("user");  
 header("Location: index.php");  

Screenshot

Gani Wijaya Web Developer

Selamat datang di blog saya, selamat membaca.

Senin, 10 Desember 2018

PBO - EAS


  1. Gambarkan rancangan interfacenya.
  2. Gambarkan dan jelaskan Class Diagram penyusun dari image viewer yang akan dibuat.
  3. Implementasikan ke dalam program dan buat link nya di posting blog ini.
Jawab

1. Rancangan Interface
  • Sebelum memilih gambar

  • Sesudah memilih gambar

2. Gambaran dan Penjelasan Class Diagram


  • Class OF Image : Untuk mendefinisikan sebuah gambar dalam format OF
  • Class Image Panel : Komponen swing yang dapat menampilkan OFImage
  • Class Image Viewer : Kelas utama dari Image Viewer
  • Class Image File Manager : Untuk memuat dan menyimpan gambar
  • Class Filter : Abstrak untuk semua filter gambar
  • Class FishEye Filter : Berfungsi membuat filter fish eye (cembung)
  • Class Lighter Filter : Berfungsi menambah kecerahan pada gambar
  • Class Darker Filter : Berfungsi menambah kegelapan pada gambar
3. Implementasi
  • OF Image
  import java.awt.*;   
  import java.awt.image.*;   
  import javax.swing.*;   
  /**   
  * OFImage is a class that defines an image in OF (Objects First) format.   
  *    
  * @author Ghannie Wijaya  
  * @version 1.0   
  */   
  public class OFImage extends BufferedImage  
 {  
   /**  
    * Create an OFImage copied from a BufferedImage.  
    * @param image The image to copy.  
    */  
   public OFImage(BufferedImage image)  
   {  
      super(image.getColorModel(), image.copyData(null),  
         image.isAlphaPremultiplied(), null);  
   }  
   /**  
    * Create an OFImage with specified size and unspecified content.  
    * @param width The width of the image.  
    * @param height The height of the image.  
    */  
   public OFImage(int width, int height)  
   {  
     super(width, height, TYPE_INT_RGB);  
   }  
   /**  
    * Set a given pixel of this image to a specified color. The  
    * color is represented as an (r,g,b) value.  
    * @param x The x position of the pixel.  
    * @param y The y position of the pixel.  
    * @param col The color of the pixel.  
    */  
   public void setPixel(int x, int y, Color col)  
   {  
     int pixel = col.getRGB();  
     setRGB(x, y, pixel);  
   }  
   /**  
    * Get the color value at a specified pixel position.  
    * @param x The x position of the pixel.  
    * @param y The y position of the pixel.  
    * @return The color of the pixel at the given position.  
    */  
   public Color getPixel(int x, int y)  
   {  
     int pixel = getRGB(x, y);  
     return new Color(pixel);  
   }  
 }  

  • Image Panel
  import java.awt.*;   
  import javax.swing.*;   
  import java.awt.image.*;   
  /**   
  * An ImagePanel is a Swing component that can display an OFImage.   
  * It is constructed as a subclass of JComponent with the added functionality   
  * of setting an OFImage that will be displayed on the surface of this   
  * component.   
  *    
  * @author Ghannie Wijaya   
  * @version 1.0   
  */   
  public class ImagePanel extends JComponent  
 {  
   // The current width and height of this panel  
   private int width, height;  
   // An internal image buffer that is used for painting. For  
   // actual display, this image buffer is then copied to screen.  
   private OFImage panelImage;  
   /**  
    * Create a new, empty ImagePanel.  
    */  
   public ImagePanel()  
   {  
     width = 360;  // arbitrary size for empty panel  
     height = 240;  
     panelImage = null;  
   }  
   /**  
    * Set the image that this panel should show.  
    *  
    * @param image The image to be displayed.  
    */  
   public void setImage(OFImage image)  
   {  
     if(image != null) {  
       width = image.getWidth();  
       height = image.getHeight();  
       panelImage = image;  
       repaint();  
     }  
   }  
   /**  
    * Clear the image on this panel.  
    */  
   public void clearImage()  
   {  
     Graphics imageGraphics = panelImage.getGraphics();  
     imageGraphics.setColor(Color.LIGHT_GRAY);  
     imageGraphics.fillRect(0, 0, width, height);  
     repaint();  
   }  
   // The following methods are redefinitions of methods  
   // inherited from superclasses.  
   /**  
    * Tell the layout manager how big we would like to be.  
    * (This method gets called by layout managers for placing  
    * the components.)  
    *  
    * @return The preferred dimension for this component.  
    */  
   public Dimension getPreferredSize()  
   {  
     return new Dimension(width, height);  
   }  
   /**  
    * This component needs to be redisplayed. Copy the internal image  
    * to screen. (This method gets called by the Swing screen painter  
    * every time it want this component displayed.)  
    *  
    * @param g The graphics context that can be used to draw on this component.  
    */  
   public void paintComponent(Graphics g)  
   {  
     Dimension size = getSize();  
     g.clearRect(0, 0, size.width, size.height);  
     if(panelImage != null) {  
       g.drawImage(panelImage, 0, 0, null);  
     }  
   }  
 }  

  • Image Viewer
 import java.awt.*;  
 import java.awt.event.*;  
 import java.awt.image.*;  
 import javax.swing.*;  
 import javax.swing.border.*;  
 import java.io.File;  
 import java.util.List;  
 import java.util.ArrayList;  
 import java.util.Iterator;  
 import java.util.Scanner;  
  /**   
  * ImageViewer is the main class of the image viewer application. It builds and   
  * displays the application GUI and initialises all other components.   
  *    
  * To start the application, create an object of this class.   
  *    
  * @author Ghannie Wijaya    
  * @version 1.0   
  */   
  public class ImageViewer  
 {  
   // static fields:  
   private static final String VERSION = "Version 3.0";  
   private static JFileChooser fileChooser = new JFileChooser(System.getProperty("user.dir"));  
   // fields:  
   private JFrame frame;  
   private ImagePanel imagePanel;  
   private JLabel filenameLabel;  
   private JLabel statusLabel;  
   private JButton smallerButton;  
   private JButton largerButton;  
   private JButton resizeButton;  
   private JButton cropButton;  
   private JButton textButton;  
   private OFImage currentImage;  
   private List<Filter> filters;  
   /**  
    * Create an ImageViewer and display its GUI on screen.  
    */  
   public ImageViewer()  
   {  
     currentImage = null;  
     filters = createFilters();  
     makeFrame();  
   }  
   // ---- implementation of menu functions ----  
   /**  
    * Open function: open a file chooser to select a new image file,  
    * and then display the chosen image.  
    */  
   private void openFile()  
   {  
     int returnVal = fileChooser.showOpenDialog(frame);  
     if(returnVal != JFileChooser.APPROVE_OPTION) {  
       return; // cancelled  
     }  
     File selectedFile = fileChooser.getSelectedFile();  
     currentImage = ImageFileManager.loadImage(selectedFile);  
     if(currentImage == null) {  // image file was not a valid image  
       JOptionPane.showMessageDialog(frame,  
           "The file was not in a recognized image file format.",  
           "Image Load Error",  
           JOptionPane.ERROR_MESSAGE);  
       return;  
     }  
     imagePanel.setImage(currentImage);  
     setButtonsEnabled(true);  
     showFilename(selectedFile.getPath());  
     showStatus("File loaded.");  
     frame.pack();  
   }  
   /**  
    * Close function: close the current image.  
    */  
   private void close()  
   {  
     currentImage = null;  
     imagePanel.clearImage();  
     showFilename(null);  
     setButtonsEnabled(false);  
   }  
   /**  
    * Save As function: save the current image to a file.  
    */  
   private void saveAs()  
   {  
     if(currentImage != null) {  
       int returnVal = fileChooser.showSaveDialog(frame);  
       if(returnVal != JFileChooser.APPROVE_OPTION) {  
         return; // cancelled  
       }  
       File selectedFile = fileChooser.getSelectedFile();  
       ImageFileManager.saveImage(currentImage, selectedFile);  
       showFilename(selectedFile.getPath());  
     }  
   }  
   /**  
    * Quit function: quit the application.  
    */  
   private void quit()  
   {  
     System.exit(0);  
   }  
   /**  
    * Apply a given filter to the current image.  
    *  
    * @param filter  The filter object to be applied.  
    */  
   private void applyFilter(Filter filter)  
   {  
     if(currentImage != null) {  
       filter.apply(currentImage);  
       frame.repaint();  
       showStatus("Applied: " + filter.getName());  
     }  
     else {  
       showStatus("No image loaded.");  
     }  
   }  
   private void crop()  
   {  
     if (currentImage != null)  
     {  
       int width = currentImage.getWidth();  
       int height = currentImage.getWidth();  
       int xAwal = Integer.parseInt(JOptionPane.showInputDialog("xAwal"));  
       int yAwal = Integer.parseInt(JOptionPane.showInputDialog("yAwal"));  
       int xAkhir = Integer.parseInt(JOptionPane.showInputDialog("xAkhir"));  
       int yAkhir = Integer.parseInt(JOptionPane.showInputDialog("yAkhir"));  
       OFImage newImage = new OFImage(xAkhir - xAwal, yAkhir - yAwal);  
       for (int y = 0; y < yAkhir - yAwal; y++)  
       {  
         for (int x = 0; x < xAkhir - xAwal; x++)  
         {  
           newImage.setPixel(x, y, currentImage.getPixel(x + xAwal, y + yAwal));  
         }  
       }  
       currentImage = newImage;  
       imagePanel.setImage(currentImage);  
       frame.pack();  
     }  
   }  
   private void makeText()  
   {  
     JTextField xField = new JTextField(5);  
     JTextField yField = new JTextField(5);  
     JTextField zField = new JTextField(5);  
     JPanel myPanel = new JPanel();  
     myPanel.add(new JLabel("R"));  
     myPanel.add(xField);  
     myPanel.add(Box.createVerticalStrut(15)); // a spacer  
     myPanel.add(new JLabel("G"));  
     myPanel.add(yField);  
     myPanel.add(Box.createVerticalStrut(15)); // a spacer  
     myPanel.add(new JLabel("B"));  
     myPanel.add(zField);  
     if(currentImage != null) {  
       int width = currentImage.getWidth();  
       int height = currentImage.getHeight();  
       int xPosition = Integer.parseInt(JOptionPane.showInputDialog("Pixel Position X"));  
       int yPosition = Integer.parseInt(JOptionPane.showInputDialog("Pixel Position Y"));  
       float fontSize = Float.parseFloat(JOptionPane.showInputDialog("Font Size"));  
       String addText = JOptionPane.showInputDialog("Write Something..");  
       int result = JOptionPane.showConfirmDialog(null, myPanel, "Font Color", JOptionPane.OK_CANCEL_OPTION);  
       OFImage newImage = new OFImage(width, height);  
       // copy pixel data into new image  
       for(int y = 0; y < height; y++) {  
         for(int x = 0; x < width; x++) {  
           Color col = currentImage.getPixel(x, y);  
           newImage.setPixel(x, y, col);  
         }  
       }  
       int r = Integer.parseInt(xField.getText());  
       int gr = Integer.parseInt(yField.getText());  
       int b = Integer.parseInt(zField.getText());  
       Color c = new Color(r,gr,b);  
       Graphics g = newImage.getGraphics();  
       g.setFont(g.getFont().deriveFont(fontSize));  
       g.setColor(c);  
       g.drawString(addText, xPosition, yPosition);  
       g.dispose();  
       currentImage = newImage;  
       imagePanel.setImage(currentImage);  
     }  
   }  
   /**  
    * 'About' function: show the 'about' box.  
    */  
   private void showAbout()  
   {  
     JOptionPane.showMessageDialog(frame,  
           "ImageViewer\n" + VERSION,  
           "About ImageViewer",  
           JOptionPane.INFORMATION_MESSAGE);  
   }  
   /**  
    * Make the current picture larger.  
    */  
   private void makeLarger()  
   {  
     if(currentImage != null) {  
       // create new image with double size  
       int width = currentImage.getWidth();  
       int height = currentImage.getHeight();  
       OFImage newImage = new OFImage(width * 2, height * 2);  
       // copy pixel data into new image  
       for(int y = 0; y < height; y++) {  
         for(int x = 0; x < width; x++) {  
           Color col = currentImage.getPixel(x, y);  
           newImage.setPixel(x * 2, y * 2, col);  
           newImage.setPixel(x * 2 + 1, y * 2, col);  
           newImage.setPixel(x * 2, y * 2 + 1, col);  
           newImage.setPixel(x * 2+1, y * 2 + 1, col);  
         }  
       }  
       currentImage = newImage;  
       imagePanel.setImage(currentImage);  
       frame.pack();  
     }  
   }  
   /**  
    * Make the current picture smaller.  
    */  
   private void makeSmaller()  
   {  
     if(currentImage != null) {  
       // create new image with double size  
       int width = currentImage.getWidth() / 2;  
       int height = currentImage.getHeight() / 2;  
       OFImage newImage = new OFImage(width, height);  
       // copy pixel data into new image  
       for(int y = 0; y < height; y++) {  
         for(int x = 0; x < width; x++) {  
           newImage.setPixel(x, y, currentImage.getPixel(x * 2, y * 2));  
         }  
       }  
       currentImage = newImage;  
       imagePanel.setImage(currentImage);  
       frame.pack();  
     }  
   }  
     private void Rotate90left() {  
     if(currentImage != null) {  
       // create new image with double size  
       int width = currentImage.getWidth();  
       int height = currentImage.getHeight();  
       OFImage newImage = new OFImage(height, width);  
       //copy pixel data into new image  
       for(int y = 0; y < height; y++) {  
         for(int x = 0; x < width; x++) {  
           Color col = currentImage.getPixel(x, y);  
           newImage.setPixel(y, width-x-1, col);  
         }  
       }  
       currentImage = newImage;  
       imagePanel.setImage(currentImage);  
       frame.pack();  
     }  
   }  
       private void Rotate90right() {  
     if(currentImage != null) {  
       // create new image with double size  
       int width = currentImage.getWidth();  
       int height = currentImage.getHeight();  
       OFImage newImage = new OFImage(height, width);  
       //copy pixel data into new image  
       for(int y = 0; y < height; y++) {  
         for(int x = 0; x < width; x++) {  
           Color col = currentImage.getPixel(x, y);  
           newImage.setPixel(height-y-1, x, col);  
         }  
       }  
       currentImage = newImage;  
       imagePanel.setImage(currentImage);  
       frame.pack();  
     }  
   }  
   // ---- support methods ----  
   /**  
    * Show the file name of the current image in the fils display label.  
    * 'null' may be used as a parameter if no file is currently loaded.  
    *  
    * @param filename The file name to be displayed, or null for 'no file'.  
    */  
   private void showFilename(String filename)  
   {  
     if(filename == null) {  
       filenameLabel.setText("Tidak ada gambar yang ditampilkan.");  
     }  
     else {  
       filenameLabel.setText("File: " + filename);  
     }  
   }  
   /**  
    * Show a message in the status bar at the bottom of the screen.  
    * @param text The message to be displayed.  
    */  
   private void showStatus(String text)  
   {  
     statusLabel.setText(text);  
   }  
   /**  
    * Enable or disable all toolbar buttons.  
    *  
    * @param status 'true' to enable the buttons, 'false' to disable.  
    */  
   private void setButtonsEnabled(boolean status)  
   {  
     smallerButton.setEnabled(status);  
     largerButton.setEnabled(status);  
     cropButton.setEnabled(status);  
     textButton.setEnabled(status);  
   }  
   /**  
    * Create a list with all the known filters.  
    * @return The list of filters.  
    */  
   private List<Filter> createFilters()  
   {  
     List<Filter> filterList = new ArrayList<Filter>();  
     filterList.add(new DarkerFilter("Darker"));  
     filterList.add(new LighterFilter("Lighter"));  
     filterList.add(new ThresholdFilter("Threshold"));  
     filterList.add(new FishEyeFilter("Fish Eye"));  
     filterList.add(new FlipVerticalFilter("Flip Vertical"));  
     filterList.add(new FlipHorizontalFilter("Flip Horizontal"));  
     return filterList;  
   }  
   // ---- swing stuff to build the frame and all its components ----  
   /**  
    * Create the Swing frame and its content.  
    */  
   private void makeFrame()  
   {  
     frame = new JFrame("ImageViewer");  
     JPanel contentPane = (JPanel)frame.getContentPane();  
     contentPane.setBorder(new EmptyBorder(6, 6, 6, 6));  
     makeMenuBar(frame);  
     // Specify the layout manager with nice spacing  
     contentPane.setLayout(new BorderLayout(6, 6));  
     // Create the image pane in the center  
     imagePanel = new ImagePanel();  
     imagePanel.setBorder(new EtchedBorder());  
     contentPane.add(imagePanel, BorderLayout.CENTER);  
     // Create two labels at top and bottom for the file name and status message  
     filenameLabel = new JLabel();  
     contentPane.add(filenameLabel, BorderLayout.NORTH);  
     statusLabel = new JLabel(VERSION);  
     contentPane.add(statusLabel, BorderLayout.SOUTH);  
     // Create the toolbar with the buttons  
     JPanel toolbar = new JPanel();  
     toolbar.setLayout(new GridLayout(0, 1));  
     smallerButton = new JButton("Kecilkan");  
     smallerButton.addActionListener(new ActionListener() {  
                 public void actionPerformed(ActionEvent e) { makeSmaller(); }  
               });  
     toolbar.add(smallerButton);  
     largerButton = new JButton("Besarkan");  
     largerButton.addActionListener(new ActionListener() {  
                 public void actionPerformed(ActionEvent e) { makeLarger(); }  
               });  
     toolbar.add(largerButton);  
     cropButton=new JButton("Potong");  
     cropButton.addActionListener(new ActionListener() {  
                 public void actionPerformed(ActionEvent e) { crop(); }  
               });  
     toolbar.add(cropButton);  
     textButton=new JButton("Tulis");  
     textButton.addActionListener(new ActionListener() {  
                 public void actionPerformed(ActionEvent e) { makeText(); }  
               });  
     toolbar.add(textButton);  
     // Add toolbar into panel with flow layout for spacing  
     JPanel flow = new JPanel();  
     flow.add(toolbar);  
     contentPane.add(flow, BorderLayout.WEST);  
     // building is done - arrange the components    
     showFilename(null);  
     setButtonsEnabled(false);  
     frame.pack();  
     // place the frame at the center of the screen and show  
     Dimension d = Toolkit.getDefaultToolkit().getScreenSize();  
     frame.setLocation(d.width/2 - frame.getWidth()/2, d.height/2 - frame.getHeight()/2);  
     frame.setVisible(true);  
   }  
   /**  
    * Create the main frame's menu bar.  
    *  
    * @param frame  The frame that the menu bar should be added to.  
    */  
   private void makeMenuBar(JFrame frame)  
   {  
     final int SHORTCUT_MASK =  
       Toolkit.getDefaultToolkit().getMenuShortcutKeyMask();  
     JMenuBar menubar = new JMenuBar();  
     frame.setJMenuBar(menubar);  
     JMenu menu;  
     JMenuItem item;  
     // create the File menu  
     menu = new JMenu("File");  
     menubar.add(menu);  
     item = new JMenuItem("Open...");  
       item.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_O, SHORTCUT_MASK));  
       item.addActionListener(new ActionListener() {  
                 public void actionPerformed(ActionEvent e) { openFile(); }  
               });  
     menu.add(item);  
     item = new JMenuItem("Close");  
       item.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_W, SHORTCUT_MASK));  
       item.addActionListener(new ActionListener() {  
                 public void actionPerformed(ActionEvent e) { close(); }  
               });  
     menu.add(item);  
     menu.addSeparator();  
     item = new JMenuItem("Save As...");  
       item.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_S, SHORTCUT_MASK));  
       item.addActionListener(new ActionListener() {  
                 public void actionPerformed(ActionEvent e) { saveAs(); }  
               });  
     menu.add(item);  
     menu.addSeparator();  
     item = new JMenuItem("Quit");  
       item.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_Q, SHORTCUT_MASK));  
       item.addActionListener(new ActionListener() {  
                 public void actionPerformed(ActionEvent e) { quit(); }  
               });  
     menu.add(item);  
     // create the Filter menu  
     menu = new JMenu("Filter");  
     menubar.add(menu);  
     for(final Filter filter : filters) {  
       item = new JMenuItem(filter.getName());  
       item.addActionListener(new ActionListener() {  
                 public void actionPerformed(ActionEvent e) {  
                   applyFilter(filter);  
                 }  
               });  
        menu.add(item);  
      }  
      //edit  
     menu = new JMenu("Edit");  
     menubar.add(menu);  
     item = new JMenuItem("Rotate 90 Left");  
       item.addActionListener(new ActionListener() {  
                 public void actionPerformed(ActionEvent e) { Rotate90left(); }  
               });  
     menu.add(item);  
     item = new JMenuItem("Rotate 90 Right");  
       item.addActionListener(new ActionListener() {  
                 public void actionPerformed(ActionEvent e) { Rotate90right(); }  
               });  
     menu.add(item);  
     // create the Help menu  
     menu = new JMenu("Help");  
     menubar.add(menu);  
     item = new JMenuItem("About ImageViewer...");  
       item.addActionListener(new ActionListener() {  
                 public void actionPerformed(ActionEvent e) { showAbout(); }  
               });  
     menu.add(item);  
   }  
 }  

  • Image File Manager
  import java.awt.image.*;   
  import javax.imageio.*;   
  import java.io.*;   
  /**   
  * ImageFileManager is a small utility class with static methods to load   
  * and save images.   
  *    
  * The files on disk can be in JPG or PNG image format. For files written   
  * by this class, the format is determined by the constant IMAGE_FORMAT.   
  *    
  * @author Ghannie Wijaya   
  * @version 1.0   
  */   
  public class ImageFileManager  
 {  
   // A constant for the image format that this writer uses for writing.  
   // Available formats are "jpg" and "png".  
   private static final String IMAGE_FORMAT = "jpg";  
   /**  
    * Read an image file from disk and return it as an image. This method  
    * can read JPG and PNG file formats. In case of any problem (e.g the file  
    * does not exist, is in an undecodable format, or any other read error)  
    * this method returns null.  
    *  
    * @param imageFile The image file to be loaded.  
    * @return      The image object or null is it could not be read.  
    */  
   public static OFImage loadImage(File imageFile)  
   {  
     try {  
       BufferedImage image = ImageIO.read(imageFile);  
       if(image == null || (image.getWidth(null) < 0)) {  
         // we could not load the image - probably invalid file format  
         return null;  
       }  
       return new OFImage(image);  
     }  
     catch(IOException exc) {  
       return null;  
     }  
   }  
   /**  
    * Write an image file to disk. The file format is JPG. In case of any  
    * problem the method just silently returns.  
    *  
    * @param image The image to be saved.  
    * @param file  The file to save to.  
    */  
   public static void saveImage(OFImage image, File file)  
   {  
     try {  
       ImageIO.write(image, IMAGE_FORMAT, file);  
     }  
     catch(IOException exc) {  
       return;  
     }  
   }  
 }  

  • Filter
 /**  
  * Write a description of class Filter here.  
  *  
  * @author (Ghannie Wijaya)  
  * @version (1.0)  
  */  
 public abstract class Filter  
 {  
   private String name;  
   /**  
    * Create a new filter with a given name.  
    * @param name The name of the filter.  
    */  
   public Filter(String name)  
   {  
     this.name = name;  
   }  
   /**  
    * Return the name of this filter.  
    *  
    * @return The name of this filter.  
    */  
   public String getName()  
   {  
     return name;  
   }  
   /**  
    * Apply this filter to an image.  
    *  
    * @param image The image to be changed by this filter.  
    */  
   public abstract void apply(OFImage image);  
 }  

  • FishEye
 import java.awt.Color;  
 /**  
  * Write a description of class FishEyeFilter here.  
  *  
  * @author (Ghannie Wijaya)  
  * @version (1.0)  
  */  
 public class FishEyeFilter extends Filter  
 {  
   // constants:  
   private final static int SCALE = 20;  // this defines the strenght of the filter  
   private final static double TWO_PI = 2 * Math.PI;  
   /**  
    * Constructor for objects of class LensFilter.  
    * @param name The name of the filter.  
    */  
   public FishEyeFilter(String name)  
   {  
     super(name);  
   }  
   /**  
    * Apply this filter to an image.  
    *  
    * @param image The image to be changed by this filter.  
    */  
   public void apply(OFImage image)  
   {  
     int height = image.getHeight();  
     int width = image.getWidth();  
     OFImage original = new OFImage(image);  
     int[] xa = computeXArray(width);  
     int[] ya = computeYArray(height);  
     for(int y = 0; y < height; y++) {  
       for(int x = 0; x < width; x++) {  
         image.setPixel(x, y, original.getPixel(x + xa[x], y + ya[y]));  
       }  
     }  
   }  
   /**  
    * Compute and return an array of horizontal offsets for each pixel column.  
    * These can then be applied as the horizontal offset for each pixel.  
    */  
   private int[] computeXArray(int width)  
   {  
     int[] xArray = new int[width];  
     for(int i=0; i < width; i++) {  
       xArray[i] = (int)(Math.sin( ((double)i / width) * TWO_PI) * SCALE);  
     }  
     return xArray;  
   }  
   /**  
    * Compute and return an array of vertical offsets for each pixel row.  
    * These can then be applied as the vertical offset for each pixel.  
    */  
   private int[] computeYArray(int height)  
   {  
     int[] yArray = new int[height];  
     for(int i=0; i < height; i++) {  
       yArray[i] = (int)(Math.sin( ((double)i / height) * TWO_PI) * SCALE);  
     }  
     return yArray;  
   }  
 }  

  • Lighter
 /**  
  * Write a description of class LighterFilter here.  
  *  
  * @author (Ghannie Wijaya)  
  * @version (1.0)  
  */  
 public class LighterFilter extends Filter  
 {  
   /**  
    * Constructor for objects of class LighterFilter.  
    * @param name The name of the filter.  
    */  
   public LighterFilter(String name)  
   {  
     super(name);  
   }  
   /**  
    * Apply this filter to an image.  
    *  
    * @param image The image to be changed by this filter.  
    */  
   public void apply(OFImage image)  
   {  
     int height = image.getHeight();  
     int width = image.getWidth();  
     for(int y = 0; y < height; y++) {  
       for(int x = 0; x < width; x++) {  
         image.setPixel(x, y, image.getPixel(x, y).brighter());  
       }  
     }  
   }  
 }  

  • Darker
 /**  
  * Write a description of class DarkerFilter here.  
  *  
  * @author (Ghannie Wijaya)  
  * @version (1.0)  
  */  
 public class DarkerFilter extends Filter  
 {  
   /**  
    * Constructor for objects of class DarkerFilter.  
    * @param name The name of the filter.  
    */  
   public DarkerFilter(String name)  
   {  
     super(name);  
   }  
   /**  
    * Apply this filter to an image.  
    *  
    * @param image The image to be changed by this filter.  
    */  
   public void apply(OFImage image)  
   {  
     int height = image.getHeight();  
     int width = image.getWidth();  
     for(int y = 0; y < height; y++) {  
       for(int x = 0; x < width; x++) {  
         image.setPixel(x, y, image.getPixel(x, y).darker());  
       }  
     }  
   }  
 }  
Gani Wijaya Web Developer

Selamat datang di blog saya, selamat membaca.

Jumat, 07 Desember 2018

PBO - PONG


Pada kesempatan kali ini membuat game Pong dengan Java dan BlueJ

Pong
 /**  
  * Write a description of class Pong here.  
  *  
  * @author (Ghannie Wijaya)  
  * @version (1.0)  
  */  
 import java.awt.BasicStroke;  
 import java.awt.Color;  
 import java.awt.Font;  
 import java.awt.Graphics2D;  
 import java.awt.RenderingHints;  
 import java.awt.event.ActionEvent;  
 import java.awt.event.ActionListener;  
 import java.awt.event.KeyEvent;  
 import java.awt.event.KeyListener;  
 import java.util.Random;  
 import javax.swing.JFrame;  
 import javax.swing.Timer;  
 public class Pong implements ActionListener, KeyListener  
 {  
      public static Pong pong;  
      public int width = 700, height = 700;  
      public Renderer renderer;  
      public Paddle player1;  
      public Paddle player2;  
      public Ball ball;  
      public boolean bot = false, selectingDifficulty;  
      public boolean w, s, up, down;  
      public int gameStatus = 0, scoreLimit = 7, playerWon; //0 = Menu, 1 = Paused, 2 = Playing, 3 = Over  
      public int botDifficulty, botMoves, botCooldown = 0;  
      public Random random;  
      public JFrame jframe;  
      public Pong()  
      {  
           Timer timer = new Timer(20, this);  
           random = new Random();  
           jframe = new JFrame("Pong");  
           renderer = new Renderer();  
           jframe.setSize(width + 15, height + 35);  
           jframe.setVisible(true);  
           jframe.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);  
           jframe.add(renderer);  
           jframe.addKeyListener(this);  
           timer.start();  
      }  
      public void start()  
      {  
           gameStatus = 2;  
           player1 = new Paddle(this, 1);  
           player2 = new Paddle(this, 2);  
           ball = new Ball(this);  
      }  
      public void update()  
      {  
           if (player1.score >= scoreLimit)  
           {  
                playerWon = 1;  
                gameStatus = 3;  
           }  
           if (player2.score >= scoreLimit)  
           {  
                gameStatus = 3;  
                playerWon = 2;  
           }  
           if (w)  
           {  
                player1.move(true);  
           }  
           if (s)  
           {  
                player1.move(false);  
           }  
           if (!bot)  
           {  
                if (up)  
                {  
                     player2.move(true);  
                }  
                if (down)  
                {  
                     player2.move(false);  
                }  
           }  
           else  
           {  
                if (botCooldown > 0)  
                {  
                     botCooldown--;  
                     if (botCooldown == 0)  
                     {  
                          botMoves = 0;  
                     }  
                }  
                if (botMoves < 10)  
                {  
                     if (player2.y + player2.height / 2 < ball.y)  
                     {  
                          player2.move(false);  
                          botMoves++;  
                     }  
                     if (player2.y + player2.height / 2 > ball.y)  
                     {  
                          player2.move(true);  
                          botMoves++;  
                     }  
                     if (botDifficulty == 0)  
                     {  
                          botCooldown = 20;  
                     }  
                     if (botDifficulty == 1)  
                     {  
                          botCooldown = 15;  
                     }  
                     if (botDifficulty == 2)  
                     {  
                          botCooldown = 10;  
                     }  
                }  
           }  
           ball.update(player1, player2);  
      }  
      public void render(Graphics2D g)  
      {  
           g.setColor(Color.BLACK);  
           g.fillRect(0, 0, width, height);  
           g.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);  
           if (gameStatus == 0)  
           {  
                g.setColor(Color.WHITE);  
                g.setFont(new Font("Arial", 1, 50));  
                g.drawString("PONG", width / 2 - 75, 50);  
                if (!selectingDifficulty)  
                {  
                     g.setFont(new Font("Arial", 1, 30));  
                     g.drawString("Press Space to Play", width / 2 - 150, height / 2 - 25);  
                     g.drawString("Press Shift to Play with Bot", width / 2 - 200, height / 2 + 25);  
                     g.drawString("<< Score Limit: " + scoreLimit + " >>", width / 2 - 150, height / 2 + 75);  
                }  
           }  
           if (selectingDifficulty)  
           {  
                String string = botDifficulty == 0 ? "Easy" : (botDifficulty == 1 ? "Medium" : "Hard");  
                g.setFont(new Font("Arial", 1, 30));  
                g.drawString("<< Bot Difficulty: " + string + " >>", width / 2 - 180, height / 2 - 25);  
                g.drawString("Press Space to Play", width / 2 - 150, height / 2 + 25);  
           }  
           if (gameStatus == 1)  
           {  
                g.setColor(Color.WHITE);  
                g.setFont(new Font("Arial", 1, 50));  
                g.drawString("PAUSED", width / 2 - 103, height / 2 - 25);  
           }  
           if (gameStatus == 1 || gameStatus == 2)  
           {  
                g.setColor(Color.WHITE);  
                g.setStroke(new BasicStroke(5f));  
                g.drawLine(width / 2, 0, width / 2, height);  
                g.setStroke(new BasicStroke(2f));  
                g.drawOval(width / 2 - 150, height / 2 - 150, 300, 300);  
                g.setFont(new Font("Arial", 1, 50));  
                g.drawString(String.valueOf(player1.score), width / 2 - 90, 50);  
                g.drawString(String.valueOf(player2.score), width / 2 + 65, 50);  
                player1.render(g);  
                player2.render(g);  
                ball.render(g);  
           }  
           if (gameStatus == 3)  
           {  
                g.setColor(Color.WHITE);  
                g.setFont(new Font("Arial", 1, 50));  
                g.drawString("PONG", width / 2 - 75, 50);  
                if (bot && playerWon == 2)  
                {  
                     g.drawString("The Bot Wins!", width / 2 - 170, 200);  
                }  
                else  
                {  
                     g.drawString("Player " + playerWon + " Wins!", width / 2 - 165, 200);  
                }  
                g.setFont(new Font("Arial", 1, 30));  
                g.drawString("Press Space to Play Again", width / 2 - 185, height / 2 - 25);  
                g.drawString("Press ESC for Menu", width / 2 - 140, height / 2 + 25);  
           }  
      }  
      @Override  
      public void actionPerformed(ActionEvent e)  
      {  
           if (gameStatus == 2)  
           {  
                update();  
           }  
           renderer.repaint();  
      }  
      public static void main(String[] args)  
      {  
           pong = new Pong();  
      }  
      @Override  
      public void keyPressed(KeyEvent e)  
      {  
           int id = e.getKeyCode();  
           if (id == KeyEvent.VK_W)  
           {  
                w = true;  
           }  
           else if (id == KeyEvent.VK_S)  
           {  
                s = true;  
           }  
           else if (id == KeyEvent.VK_UP)  
           {  
                up = true;  
           }  
           else if (id == KeyEvent.VK_DOWN)  
           {  
                down = true;  
           }  
           else if (id == KeyEvent.VK_RIGHT)  
           {  
                if (selectingDifficulty)  
                {  
                     if (botDifficulty < 2)  
                     {  
                          botDifficulty++;  
                     }  
                     else  
                     {  
                          botDifficulty = 0;  
                     }  
                }  
                else if (gameStatus == 0)  
                {  
                     scoreLimit++;  
                }  
           }  
           else if (id == KeyEvent.VK_LEFT)  
           {  
                if (selectingDifficulty)  
                {  
                     if (botDifficulty > 0)  
                     {  
                          botDifficulty--;  
                     }  
                     else  
                     {  
                          botDifficulty = 2;  
                     }  
                }  
                else if (gameStatus == 0 && scoreLimit > 1)  
                {  
                     scoreLimit--;  
                }  
           }  
           else if (id == KeyEvent.VK_ESCAPE && (gameStatus == 2 || gameStatus == 3))  
           {  
                gameStatus = 0;  
           }  
           else if (id == KeyEvent.VK_SHIFT && gameStatus == 0)  
           {  
                bot = true;  
                selectingDifficulty = true;  
           }  
           else if (id == KeyEvent.VK_SPACE)  
           {  
                if (gameStatus == 0 || gameStatus == 3)  
                {  
                     if (!selectingDifficulty)  
                     {  
                          bot = false;  
                     }  
                     else  
                     {  
                          selectingDifficulty = false;  
                     }  
                     start();  
                }  
                else if (gameStatus == 1)  
                {  
                     gameStatus = 2;  
                }  
                else if (gameStatus == 2)  
                {  
                     gameStatus = 1;  
                }  
           }  
      }  
      @Override  
      public void keyReleased(KeyEvent e)  
      {  
           int id = e.getKeyCode();  
           if (id == KeyEvent.VK_W)  
           {  
                w = false;  
           }  
           else if (id == KeyEvent.VK_S)  
           {  
                s = false;  
           }  
           else if (id == KeyEvent.VK_UP)  
           {  
                up = false;  
           }  
           else if (id == KeyEvent.VK_DOWN)  
           {  
                down = false;  
           }  
      }  
      @Override  
      public void keyTyped(KeyEvent e)  
      {  
      }  
 }  


Ball
 /**  
  * Write a description of class Ball here.  
  *  
  * @author (Ghannie Wijaya)  
  * @version (1.0)  
  */  
 import java.awt.Color;  
 import java.awt.Graphics;  
 import java.util.Random;  
 public class Ball  
 {  
      public int x, y, width = 25, height = 25;  
      public int motionX, motionY;  
      public Random random;  
      private Pong pong;  
      public int amountOfHits;  
      public Ball(Pong pong)  
      {  
           this.pong = pong;  
           this.random = new Random();  
           spawn();  
      }  
      public void update(Paddle paddle1, Paddle paddle2)  
      {  
           int speed = 5;  
           this.x += motionX * speed;  
           this.y += motionY * speed;  
           if (this.y + height - motionY > pong.height || this.y + motionY < 0)  
           {  
                if (this.motionY < 0)  
                {  
                     this.y = 0;  
                     this.motionY = random.nextInt(4);  
                     if (motionY == 0)  
                     {  
                          motionY = 1;  
                     }  
                }  
                else  
                {  
                     this.motionY = -random.nextInt(4);  
                     this.y = pong.height - height;  
                     if (motionY == 0)  
                     {  
                          motionY = -1;  
                     }  
                }  
           }  
           if (checkCollision(paddle1) == 1)  
           {  
                this.motionX = 1 + (amountOfHits / 5);  
                this.motionY = -2 + random.nextInt(4);  
                if (motionY == 0)  
                {  
                     motionY = 1;  
                }  
                amountOfHits++;  
           }  
           else if (checkCollision(paddle2) == 1)  
           {  
                this.motionX = -1 - (amountOfHits / 5);  
                this.motionY = -2 + random.nextInt(4);  
                if (motionY == 0)  
                {  
                     motionY = 1;  
                }  
                amountOfHits++;  
           }  
           if (checkCollision(paddle1) == 2)  
           {  
                paddle2.score++;  
                spawn();  
           }  
           else if (checkCollision(paddle2) == 2)  
           {  
                paddle1.score++;  
                spawn();  
           }  
      }  
      public void spawn()  
      {  
           this.amountOfHits = 0;  
           this.x = pong.width / 2 - this.width / 2;  
           this.y = pong.height / 2 - this.height / 2;  
           this.motionY = -2 + random.nextInt(4);  
           if (motionY == 0)  
           {  
                motionY = 1;  
           }  
           if (random.nextBoolean())  
           {  
                motionX = 1;  
           }  
           else  
           {  
                motionX = -1;  
           }  
      }  
      public int checkCollision(Paddle paddle)  
      {  
           if (this.x < paddle.x + paddle.width && this.x + width > paddle.x && this.y < paddle.y + paddle.height && this.y + height > paddle.y)  
           {  
                return 1; //bounce  
           }  
           else if ((paddle.x > x && paddle.paddleNumber == 1) || (paddle.x < x - width && paddle.paddleNumber == 2))  
           {  
                return 2; //score  
           }  
           return 0; //nothing  
      }  
      public void render(Graphics g)  
      {  
           g.setColor(Color.WHITE);  
           g.fillOval(x, y, width, height);  
      }  
 }  


Paddle
 /**  
  * Write a description of class Paddle here.  
  *  
  * @author (Ghannie Wijaya)  
  * @version (1.0)  
  */  
 import java.awt.Color;  
 import java.awt.Graphics;  
 public class Paddle  
 {  
      public int paddleNumber;  
      public int x, y, width = 50, height = 250;  
      public int score;  
      public Paddle(Pong pong, int paddleNumber)  
      {  
           this.paddleNumber = paddleNumber;  
           if (paddleNumber == 1)  
           {  
                this.x = 0;  
           }  
           if (paddleNumber == 2)  
           {  
                this.x = pong.width - width;  
           }  
           this.y = pong.height / 2 - this.height / 2;  
      }  
      public void render(Graphics g)  
      {  
           g.setColor(Color.WHITE);  
           g.fillRect(x, y, width, height);  
      }  
      public void move(boolean up)  
      {  
           int speed = 15;  
           if (up)  
           {  
                if (y - speed > 0)  
                {  
                     y -= speed;  
                }  
                else  
                {  
                     y = 0;  
                }  
           }  
           else  
           {  
                if (y + height + speed < Pong.pong.height)  
                {  
                     y += speed;  
                }  
                else  
                {  
                     y = Pong.pong.height - height;  
                }  
           }  
      }  
 }  


Renderer
 /**  
  * Write a description of class Renderer here.  
  *  
  * @author (Ghannie Wijaya)  
  * @version (1.0)  
  */  
 import java.awt.Graphics;  
 import java.awt.Graphics2D;  
 import javax.swing.JPanel;  
 public class Renderer extends JPanel  
 {  
      private static final long serialVersionUID = 1L;  
      @Override  
      protected void paintComponent(Graphics g)  
      {  
           super.paintComponent(g);  
           Pong.pong.render((Graphics2D) g);  
      }  
 }  

Gani Wijaya Web Developer

Selamat datang di blog saya, selamat membaca.

Senin, 26 November 2018

PBO - Image Viewer


Membuat penampil gambar menggunakan Java.

ImageViewer
  import java.awt.*;   
  import java.awt.event.*;   
  import java.awt.image.*;   
  import javax.swing.*;   
  import java.io.File;   
  /**   
  * ImageViewer is the main class of the image viewer application. It builds and   
  * displays the application GUI and initialises all other components.   
  *    
  * To start the application, create an object of this class.   
  *    
  * @author Ghannie Wijaya    
  * @version 1.0   
  */   
  public class ImageViewer   
  {   
   // static fields:   
   private static final String VERSION = "Version 1.0";   
   private static JFileChooser fileChooser = new JFileChooser(System.getProperty("user.dir"));   
   // fields:   
   private JFrame frame;   
   private ImagePanel imagePanel;   
   private JLabel filenameLabel;   
   private JLabel statusLabel;   
   private OFImage currentImage;   
   /**   
   * Create an ImageViewer show it on screen.   
   */   
   public ImageViewer()   
   {   
    currentImage = null;   
    makeFrame();   
   }   
   // ---- implementation of menu functions ----   
   /**   
   * Open function: open a file chooser to select a new image file.   
   */   
   private void openFile()   
   {   
    int returnVal = fileChooser.showOpenDialog(frame);   
    if(returnVal != JFileChooser.APPROVE_OPTION) {   
     return; // cancelled   
    }   
    File selectedFile = fileChooser.getSelectedFile();   
    currentImage = ImageFileManager.loadImage(selectedFile);   
    if(currentImage == null) { // image file was not a valid image   
     JOptionPane.showMessageDialog(frame,   
       "The file was not in a recognized image file format.",   
       "Image Load Error",   
       JOptionPane.ERROR_MESSAGE);   
     return;   
    }   
    imagePanel.setImage(currentImage);   
    showFilename(selectedFile.getPath());   
    showStatus("File loaded.");   
    frame.pack();   
   }   
   /**   
   * Close function: close the current image.   
   */   
   private void close()   
   {   
    currentImage = null;   
    imagePanel.clearImage();   
    showFilename(null);   
   }   
   /**   
   * Quit function: quit the application.   
   */   
   private void quit()   
   {   
    System.exit(0);   
   }   
   /**   
   * 'Darker' function: make the picture darker.   
   */   
   private void makeDarker()   
   {   
    if(currentImage != null) {   
     currentImage.darker();   
     frame.repaint();   
     showStatus("Applied: darker");   
    }   
    else {   
     showStatus("No image loaded.");   
    }   
   }   
   /**   
   * 'Lighter' function: make the picture lighter   
   */   
   private void makeLighter()   
   {   
    if(currentImage != null) {   
     currentImage.lighter();   
     frame.repaint();   
     showStatus("Applied: lighter");   
    }   
    else {   
     showStatus("No image loaded.");   
    }   
   }   
   /**   
   * 'threshold' function: apply the threshold filter   
   */   
   private void threshold()   
   {   
    if(currentImage != null) {   
     currentImage.threshold();   
     frame.repaint();   
     showStatus("Applied: threshold");   
    }   
    else {   
     showStatus("No image loaded.");   
    }   
   }   
   /**   
   * 'Lighter' function: make the picture lighter   
   */   
   private void showAbout()   
   {   
    JOptionPane.showMessageDialog(frame,    
       "ImageViewer\n" + VERSION,   
       "About ImageViewer",    
       JOptionPane.INFORMATION_MESSAGE);   
   }   
   // ---- support methods ----   
   /**   
   * Display a file name on the appropriate label.   
   * @param filename The file name to be displayed.   
   */   
   private void showFilename(String filename)   
   {   
    if(filename == null) {   
     filenameLabel.setText("No file displayed.");   
    }   
    else {   
     filenameLabel.setText("File: " + filename);   
    }   
   }   
   /**   
   * Display a status message in the frame's status bar.   
   * @param text The status message to be displayed.   
   */   
   private void showStatus(String text)   
   {   
    statusLabel.setText(text);   
   }   
   // ---- swing stuff to build the frame and all its components ----   
   /**   
   * Create the Swing frame and its content.   
   */   
   private void makeFrame()   
   {   
    frame = new JFrame("ImageViewer");   
    makeMenuBar(frame);   
    Container contentPane = frame.getContentPane();   
    // Specify the layout manager with nice spacing   
    contentPane.setLayout(new BorderLayout(6, 6));   
    filenameLabel = new JLabel();   
    contentPane.add(filenameLabel, BorderLayout.NORTH);   
    imagePanel = new ImagePanel();   
    contentPane.add(imagePanel, BorderLayout.CENTER);   
    statusLabel = new JLabel(VERSION);   
    contentPane.add(statusLabel, BorderLayout.SOUTH);   
    // building is done - arrange the components and show     
    showFilename(null);   
    frame.pack();   
    Dimension d = Toolkit.getDefaultToolkit().getScreenSize();   
    frame.setLocation(d.width/2 - frame.getWidth()/2, d.height/2 - frame.getHeight()/2);   
    frame.setVisible(true);   
   }   
   /**   
   * Create the main frame's menu bar.   
   * @param frame The frame that the menu bar should be added to.   
   */   
   private void makeMenuBar(JFrame frame)   
   {   
    final int SHORTCUT_MASK =   
     Toolkit.getDefaultToolkit().getMenuShortcutKeyMask();   
    JMenuBar menubar = new JMenuBar();   
    frame.setJMenuBar(menubar);   
    JMenu menu;   
    JMenuItem item;   
    // create the File menu   
    menu = new JMenu("File");   
    menubar.add(menu);   
    item = new JMenuItem("Open");   
     item.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_O, SHORTCUT_MASK));   
     item.addActionListener(new ActionListener() {   
          public void actionPerformed(ActionEvent e) { openFile(); }   
         });   
    menu.add(item);   
    item = new JMenuItem("Close");   
     item.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_W, SHORTCUT_MASK));   
     item.addActionListener(new ActionListener() {   
          public void actionPerformed(ActionEvent e) { close(); }   
         });   
    menu.add(item);   
    menu.addSeparator();   
    item = new JMenuItem("Quit");   
     item.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_Q, SHORTCUT_MASK));   
     item.addActionListener(new ActionListener() {   
          public void actionPerformed(ActionEvent e) { quit(); }   
         });   
    menu.add(item);   
    // create the Filter menu   
    menu = new JMenu("Filter");   
    menubar.add(menu);   
    item = new JMenuItem("Darker");   
     item.addActionListener(new ActionListener() {   
          public void actionPerformed(ActionEvent e) { makeDarker(); }   
         });   
    menu.add(item);   
    item = new JMenuItem("Lighter");   
     item.addActionListener(new ActionListener() {   
          public void actionPerformed(ActionEvent e) { makeLighter(); }   
         });   
    menu.add(item);   
    item = new JMenuItem("Threshold");   
     item.addActionListener(new ActionListener() {   
          public void actionPerformed(ActionEvent e) { threshold(); }   
         });   
    menu.add(item);   
    // create the Help menu   
    menu = new JMenu("Help");   
    menubar.add(menu);   
    item = new JMenuItem("About ImageViewer...");   
     item.addActionListener(new ActionListener() {   
          public void actionPerformed(ActionEvent e) { showAbout(); }   
         });   
    menu.add(item);   
   }   
  }   

ImagePanel
  import java.awt.*;   
  import javax.swing.*;   
  import java.awt.image.*;   
  /**   
  * An ImagePanel is a Swing component that can display an OFImage.   
  * It is constructed as a subclass of JComponent with the added functionality   
  * of setting an OFImage that will be displayed on the surface of this   
  * component.   
  *    
  * @author Ghannie Wijaya   
  * @version 1.0   
  */   
  public class ImagePanel extends JComponent   
  {   
   // The current width and height of this panel   
   private int width, height;   
   // An internal image buffer that is used for painting. For   
   // actual display, this image buffer is then copied to screen.   
   private OFImage panelImage;   
   /**   
   * Create a new, empty ImagePanel.   
   */   
   public ImagePanel()   
   {   
    width = 360; // arbitrary size for empty panel   
    height = 240;   
    panelImage = null;   
   }   
   /**   
   * Set the image that this panel should show.   
   *    
   * @param image The image to be displayed.   
   */   
   public void setImage(OFImage image)   
   {   
    if(image != null) {   
     width = image.getWidth();   
     height = image.getHeight();   
     panelImage = image;   
     repaint();   
    }   
   }   
   /**   
   * Clear the image on this panel.   
   */   
   public void clearImage()   
   {   
    Graphics imageGraphics = panelImage.getGraphics();   
    imageGraphics.setColor(Color.LIGHT_GRAY);   
    imageGraphics.fillRect(0, 0, width, height);   
    repaint();   
   }   
   // The following methods are redefinitions of methods   
   // inherited from superclasses.   
   /**   
   * Tell the layout manager how big we would like to be.   
   * (This method gets called by layout managers for placing   
   * the components.)   
   *    
   * @return The preferred dimension for this component.   
   */   
   public Dimension getPreferredSize()   
   {   
    return new Dimension(width, height);   
   }   
   /**   
   * This component needs to be redisplayed. Copy the internal image    
   * to screen. (This method gets called by the Swing screen painter    
   * every time it want this component displayed.)   
   *    
   * @param g The graphics context that can be used to draw on this component.   
   */   
   public void paintComponent(Graphics g)   
   {   
    Dimension size = getSize();   
    g.clearRect(0, 0, size.width, size.height);   
    if(panelImage != null) {   
     g.drawImage(panelImage, 0, 0, null);   
    }   
   }   
  }   

ImageFileManager
  import java.awt.image.*;   
  import javax.imageio.*;   
  import java.io.*;   
  /**   
  * ImageFileManager is a small utility class with static methods to load   
  * and save images.   
  *    
  * The files on disk can be in JPG or PNG image format. For files written   
  * by this class, the format is determined by the constant IMAGE_FORMAT.   
  *    
  * @author Ghannie Wijaya   
  * @version 1.0   
  */   
  public class ImageFileManager   
  {   
   // A constant for the image format that this writer uses for writing.   
   // Available formats are "jpg" and "png".   
   private static final String IMAGE_FORMAT = "jpg";   
   /**   
   * Read an image file from disk and return it as an image. This method   
   * can read JPG and PNG file formats. In case of any problem (e.g the file    
   * does not exist, is in an undecodable format, or any other read error)    
   * this method returns null.   
   *    
   * @param imageFile The image file to be loaded.   
   * @return   The image object or null is it could not be read.   
   */   
   public static OFImage loadImage(File imageFile)   
   {   
    try {   
     BufferedImage image = ImageIO.read(imageFile);   
     if(image == null || (image.getWidth(null) < 0)) {   
      // we could not load the image - probably invalid file format   
      return null;   
     }   
     return new OFImage(image);   
    }   
    catch(IOException exc) {   
     return null;   
    }   
   }   
   /**   
   * Write an image file to disk. The file format is JPG. In case of any    
   * problem the method just silently returns.   
   *    
   * @param image The image to be saved.   
   * @param file The file to save to.   
   */   
   public static void saveImage(OFImage image, File file)   
   {   
    try {   
     ImageIO.write(image, IMAGE_FORMAT, file);   
    }   
    catch(IOException exc) {   
     return;   
    }   
   }   
  }   

OFImage
  import java.awt.*;   
  import java.awt.image.*;   
  import javax.swing.*;   
  /**   
  * OFImage is a class that defines an image in OF (Objects First) format.   
  *    
  * @author Ghannie Wijaya  
  * @version 1.0   
  */   
  public class OFImage extends BufferedImage   
  {   
   /**   
   * Create an OFImage copied from a BufferedImage.   
   * @param image The image to copy.   
   */   
   public OFImage(BufferedImage image)   
   {   
    super(image.getColorModel(), image.copyData(null),    
      image.isAlphaPremultiplied(), null);   
   }   
   /**   
   * Create an OFImage with specified size and unspecified content.   
   * @param width The width of the image.   
   * @param height The height of the image.   
   */   
   public OFImage(int width, int height)   
   {   
    super(width, height, TYPE_INT_RGB);   
   }   
   /**   
   * Set a given pixel of this image to a specified color. The   
   * color is represented as an (r,g,b) value.   
   * @param x The x position of the pixel.   
   * @param y The y position of the pixel.   
   * @param col The color of the pixel.   
   */   
   public void setPixel(int x, int y, Color col)   
   {   
    int pixel = col.getRGB();   
    setRGB(x, y, pixel);   
   }   
   /**   
   * Get the color value at a specified pixel position.   
   * @param x The x position of the pixel.   
   * @param y The y position of the pixel.   
   * @return The color of the pixel at the given position.   
   */   
   public Color getPixel(int x, int y)   
   {   
    int pixel = getRGB(x, y);   
    return new Color(pixel);   
   }   
   /**   
   * Make this image a bit darker.   
   */   
   public void darker()   
   {   
    int height = getHeight();   
    int width = getWidth();   
    for(int y = 0; y < height; y++) {   
     for(int x = 0; x < width; x++) {   
      setPixel(x, y, getPixel(x, y).darker());   
     }   
    }   
   }   
   /**   
   * Make this image a bit lighter.   
   */   
   public void lighter()   
   {   
    int height = getHeight();   
    int width = getWidth();   
    for(int y = 0; y < height; y++) {   
     for(int x = 0; x < width; x++) {   
      setPixel(x, y, getPixel(x, y).brighter());   
     }   
    }   
   }   
   /**   
   * Perform a three level threshold operation.   
   * That is: repaint the image with only three color values:   
   *   white, gray, and black.   
   */   
   public void threshold()   
   {   
    int height = getHeight();   
    int width = getWidth();   
    for(int y = 0; y < height; y++) {   
     for(int x = 0; x < width; x++) {   
      Color pixel = getPixel(x, y);   
      int brightness = (pixel.getRed() + pixel.getBlue() + pixel.getGreen()) / 3;   
      if(brightness <= 85) {   
       setPixel(x, y, Color.BLACK);   
      }   
      else if(brightness <= 170) {   
       setPixel(x, y, Color.GRAY);   
      }   
      else {   
       setPixel(x, y, Color.WHITE);   
      }   
     }   
    }   
   }   
  }   

Hasil

Sekian, terimakasih.
Gani Wijaya Web Developer

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