Algoritma pembentukan garis DDA :
1. Tentukan dua titik yang akan dihubungkan dalam pembentukan garis.
2. Tentukan salah satu titik sebagai awal(x0,y0) dan titik akhir(x1,y1).
3. Hitung dx=x1¬x0, dan dy= y1¬y0.
4. Tentukan langkah, yaitu dengan cara jarak maksimum jumlah penambahan nilai x maupun nilai y, dengan caara :
Bila nilai absolut dari dx lebih besar dari absolut dy, maka langkah= absolut dari dx.
Bila tidak maka langkah= absolut dari dy
5. Hitung penambahan koordinat pixel yaitu x_increment=dx/langkah, dan y_increment=dy/langkah.
6. Koordinat selanjutnya (x+x_increment, y+y_increment).
7. Posisi pixel pada layar ditentukan dengan pembulatan nilai koordinat tersebut.
8. Ulangi nomor 6 dan 7 untuk menentukan posisi pixel selanjutnya,sampai x= x1 dan y= y1
Contoh Source Code nya :
package Garis;
import java.awt.Graphics;
public class Garis {
public void Garisku (Graphics g, int x0, int y0, int x1, int y1){
int dx,dy,steps;
int x_tambah,y_tambah,x,y;
dx= x1-x0;
dy= y1-y0;
if (Math.abs(dx) > Math.abs(dy)){
steps = Math.abs(dx);
}
else{
steps = Math.abs(dy);
}
x_tambah = dx / steps;
y_tambah = dy / steps;
x=x0;
y=y0;
g.fillRect(x, y, 1, 1);
for (int k=10; k< steps ;k++){
x += x_tambah;
y += y_tambah;
g.fillRect(x, y, 1, 1);
}
}
}
Contoh Source Code untuk memanggil Class Garis yang bagian pertama yang sudah kita buat
Source Code nya :
package garis;
import java.awt.Color;
import java.awt.Graphics;
import javax.swing.JFrame;
import javax.swing.JPanel;
public class tampilgaris extends JPanel{
@Override
public void paintComponent(Graphics g){
Nur baru = new Nur();
g.setColor(Color.RED);
baru.Garisku(g, 200, 300, 400, 300);
baru.Garisku(g, 200, 160, 400, 160);
}
public static void main(String[] args) {
Nur baru = new Nur();
JFrame frame = new JFrame("Nur Gambar ");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.add(new tampilgaris());
frame.setSize(600, 600);
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
}
MEMBUAT GARIS DDA
Membuat SEGITIGA.AWT
package penggunaanawt;
public class AWTDemo extends Frame implements ActionListener{
package penggunaanawt;
import java.awt.*;
import java.awt.event.*;
public class AwtDemo extends Frame implements ActionListener {
int x = 100;
int y = 100;
public static void main(String[] args) {
Frame frame = new AwtDemo();
frame.setSize(640, 480);
frame.setVisible(true);
}
public AwtDemo() {
setTitle("AWT Demo");
// create menu
MenuBar mb = new MenuBar();
setMenuBar(mb);
Menu menu = new Menu("File");
mb.add(menu);
MenuItem mi = new MenuItem("Exit");
mi.addActionListener(this);
menu.add(mi);
// end program when window is closed
WindowListener l = new WindowAdapter() {
public void windowClosing(WindowEvent ev) {
System.exit(0);
}
};
this.addWindowListener(l);
// mouse event handler
MouseListener mouseListener = new MouseAdapter() {
public void mouseClicked(MouseEvent ev) {
x = ev.getX();
y = ev.getY();
repaint();
}
};
addMouseListener(mouseListener);
}
public void paint(Graphics g) {
g.drawLine(x, y, 400, 100);
g.setColor(Color.yellow);
g.drawLine(x, y,100 , 300);
g.setColor(Color.yellow);
g.drawLine(x, y+200,400 , 100);
g.setColor(Color.yellow);
}
public void actionPerformed(ActionEvent ev) {
String command = ev.getActionCommand();
if ("Exit".equals(command)) {
System.exit(0);
}
}
}
MEMBUAT ORANG.AWT
package Nuraini;
import java.awt.*;
import java.awt.event.*;
public class Nuraini extends Frame implements ActionListener{
int x = 100;
int y = 100;
public static void main(String[] args) {
Frame frame = new Nuraini();
frame.setSize(640, 480);
frame.setVisible(true);
}
public Nuraini() {
setTitle("Nuraini");
// create menu
MenuBar mb = new MenuBar();
setMenuBar(mb);
Menu menu = new Menu("File");
mb.add(menu);
MenuItem mi = new MenuItem("Exit");
mi.addActionListener(this);
menu.add(mi);
// end program when window is closed
WindowListener l = new WindowAdapter() {
public void windowClosing(WindowEvent ev) {
System.exit(0);
}
};
this.addWindowListener(l);
// mouse event handler
MouseListener mouseListener = new MouseAdapter() {
public void mouseClicked(MouseEvent ev) {
x = ev.getX();
y = ev.getY();
repaint();
}
};
addMouseListener(mouseListener);
}
public void paint(Graphics g) {
setBackground (Color.PINK);
//kepala
g.setColor(Color.RED);
g.drawOval(320,240, 200, 200);
// mata
g.setColor(Color.black);
g.fillOval(360, 310, 50, 20);
g.fillOval(440, 310, 50, 20);
// mulut
g.setColor(Color.black);
g.drawArc(380, 360, 90, 50, 180, 180);
g.drawArc(380, 366, 90, 50, 180, 180);
//alis mata
g.setColor(Color.RED);
g.drawArc(360, 290, 50, 20, -180, -180);
g.drawArc(440, 290, 50, 20, -180, -180);
// bola mata
g.setColor(Color.white);
g.fillOval(379, 321, 10, 10);
g.fillOval(457, 321, 10, 10);
//hidung
g.setColor(Color.GREEN);
g.fillOval(410, 350, 30, 30);
//telinga
g.setColor(Color.YELLOW);
g.fillOval(300, 310, 20, 60);
g.fillOval(520, 310, 20, 60);
}
public void actionPerformed(ActionEvent ev) {
String command = ev.getActionCommand();
if ("Exit".equals(command)) {
System.exit(0);
}
}
}
MEMBUAT MOBIL.AWT
package Nur_mobil;
import java.awt.*;
import java.awt.event.*;
public class Nur_mobil extends Frame implements ActionListener{
int x = 100;
int y = 100;
public static void main(String[] args) {
Frame frame = new Nur_mobil();
frame.setSize(640, 480);
frame.setVisible(true);
}
public Nur_mobil() {
setTitle("Nur_mobil");
// create menu
MenuBar mb = new MenuBar();
setMenuBar(mb);
Menu menu = new Menu("File");
mb.add(menu);
MenuItem mi = new MenuItem("Exit");
mi.addActionListener(this);
menu.add(mi);
// end program when window is closed
WindowListener l = new WindowAdapter() {
public void windowClosing(WindowEvent ev) {
System.exit(0);
}
};
this.addWindowListener(l);
// mouse event handler
MouseListener mouseListener = new MouseAdapter() {
public void mouseClicked(MouseEvent ev) {
x = ev.getX();
y = ev.getY();
repaint();
}
};
addMouseListener(mouseListener);
}
public void paint(Graphics g) {
g.setColor(Color.yellow);
g.fillRect(550, 250, 550, 270); //g.drawRect(x, y, WIDTH, WIDTH)
g.setColor(Color.red);
g.drawRect(299, 320, 250, 200);
g.setColor(Color.red);
g.fillOval(349, 520, 100, 100);
g.setColor(Color.black);
g.fillOval(470, 520, 100, 100);
g.setColor(Color.black);
g.drawOval(349, 560, 200, WIDTH);
g.setColor(Color.black);
g.fillOval(930, 520, 100, 100);
g.setColor(Color.black);
g.fillOval(800, 520, 100, 100);
g.drawOval(800, 560, 200, WIDTH);
g.setColor(Color.white);
g.fillOval(520, 240, 30, 30);
g.setColor(Color.black);
g.fillRect(550, 244, 550, 120);
g.setColor(Color.pink);
g.fillRect(380, 370, 100, 100);
}
public void actionPerformed(ActionEvent ev) {
String command = ev.getActionCommand();
if ("Exit".equals(command)) {
System.exit(0);
}
}
TUGAS GRAFIKA KOMPUTER
package penggunaanawt;
import java.awt.*;
import java.awt.event.*;
public class AwtDemo extends Frame implements ActionListener{
int x = 100;
int y = 100;
public static void main(String[] args) {
Frame frame = new AwtDemo();
frame.setSize(640, 480);
frame.setVisible(true);
}
public AwtDemo() {
setTitle("AWT Demo");
// create menu
MenuBar mb = new MenuBar();
setMenuBar(mb);
Menu menu = new Menu("File");
mb.add(menu);
MenuItem mi = new MenuItem("Exit");
mi.addActionListener(this);
menu.add(mi);
// end program when window is closed
WindowListener l = new WindowAdapter() {
public void windowClosing(WindowEvent ev) {
System.exit(0);
}
};
this.addWindowListener(l);
// mouse event handler
MouseListener mouseListener = new MouseAdapter() {
public void mouseClicked(MouseEvent ev) {
x = ev.getX();
y = ev.getY();
repaint();
}
};
addMouseListener(mouseListener);
}
public void paint(Graphics g) {
g.setColor(Color.pink);
g.fillOval(320,240, 200, 200);
g.setColor(Color.BLACK);
g.drawArc(360, 290, 50, 20, -180, -180);
g.drawArc(440, 290, 50, 20, -180, -180);
g.setColor(Color.black);
g.drawArc(380, 360, 90, 50, 180, 180);
g.fillOval(360, 310, 50, 20);
g.fillOval(440, 310, 50, 20);
}
public void actionPerformed(ActionEvent ev) {
String command = ev.getActionCommand();
if ("Exit".equals(command)) {
System.exit(0);
}
}
}
