java 2图形设计的例子:
import java.net.URL;
import java.applet.Applet;
import java.awt.*;
import java.awt.event.*;public class SimpleAnimationTest extends Applet {
public void init() {
setLayout(new BorderLayout());
add(
new Label("Simple Animation - Mouse Down Starts/Stops"),
"North");
add(new SimpleAnimationTestPanel(this), "Center");
}
}
class SimpleAnimationTestPanel extends Panel {
public SimpleAnimationTestPanel(Applet applet) {
setLayout(new BorderLayout());
add(new SimplePlayfield(applet), "Center");
}
public void update(Graphics g) {
paint(g);
}
}
class SimplePlayfield extends Playfield {
private Applet applet;
private URL cb;
private Sprite javaDrinker;
private Sequence spinSequence; public SimplePlayfield(Applet applet) {
this.applet = applet;
cb = applet.getCodeBase(); makeSequencesAndSprites(); setWallpaperImage(
applet.getImage(cb, "gifs/background.gif")); addMouseListener(new MouseAdapter() {
public void mousePressed(MouseEvent event) {
if(running() == true) stop ();
else start();
}
});
}
public void edgeCollision(Sprite sprite,
Orientation orientation) {
if(orientation == Orientation.RIGHT ||
orientation == Orientation.LEFT)
sprite.reverseX();
else
sprite.reverseY();
}
private void makeSequencesAndSprites() {
String file;
Point startLoc = new Point(10, 10);
Image[] spinImages = new Image[19]; for(int i=0; i < spinImages.length; ++i) {
file = "gifs/spin"; if(i < 10) file += "0" + i + ".gif";
else file += i + ".gif"; spinImages[i] = applet.getImage(cb, file);
}
spinSequence = new Sequence(this, spinImages);
javaDrinker = new Sprite(this, spinSequence, startLoc); javaDrinker.setMoveVector(new Point(1,1));
add(javaDrinker); }
}
import java.net.URL;
import java.applet.Applet;
import java.awt.*;
import java.awt.event.*;public class SimpleAnimationTest extends Applet {
public void init() {
setLayout(new BorderLayout());
add(
new Label("Simple Animation - Mouse Down Starts/Stops"),
"North");
add(new SimpleAnimationTestPanel(this), "Center");
}
}
class SimpleAnimationTestPanel extends Panel {
public SimpleAnimationTestPanel(Applet applet) {
setLayout(new BorderLayout());
add(new SimplePlayfield(applet), "Center");
}
public void update(Graphics g) {
paint(g);
}
}
class SimplePlayfield extends Playfield {
private Applet applet;
private URL cb;
private Sprite javaDrinker;
private Sequence spinSequence; public SimplePlayfield(Applet applet) {
this.applet = applet;
cb = applet.getCodeBase(); makeSequencesAndSprites(); setWallpaperImage(
applet.getImage(cb, "gifs/background.gif")); addMouseListener(new MouseAdapter() {
public void mousePressed(MouseEvent event) {
if(running() == true) stop ();
else start();
}
});
}
public void edgeCollision(Sprite sprite,
Orientation orientation) {
if(orientation == Orientation.RIGHT ||
orientation == Orientation.LEFT)
sprite.reverseX();
else
sprite.reverseY();
}
private void makeSequencesAndSprites() {
String file;
Point startLoc = new Point(10, 10);
Image[] spinImages = new Image[19]; for(int i=0; i < spinImages.length; ++i) {
file = "gifs/spin"; if(i < 10) file += "0" + i + ".gif";
else file += i + ".gif"; spinImages[i] = applet.getImage(cb, file);
}
spinSequence = new Sequence(this, spinImages);
javaDrinker = new Sprite(this, spinSequence, startLoc); javaDrinker.setMoveVector(new Point(1,1));
add(javaDrinker); }
}
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