Clip of image in java
Tue Nov 11, 2008 6:41 pm
Clip of image in java
- Code:
import java.awt.*;
import javax.swing.*;
import java.awt.geom.*;
import java.awt.event.*;
import java.net.URL;
import java.awt.image.BufferedImage;
public class ClipImageExample extends JApplet implements Runnable {
private final double I[] = { 6.0,2.0 };
private final double J[] = { 6.0,5.0 };
private double p, q;
private double ip = I[0];
private double iq = J[1];
private double iw = I[0];
private double ih = J[1];
private double width, height;
private GeneralPath path = new GeneralPath();
private AffineTransform affineTransform = new AffineTransform();
private BasicStroke stroke = new BasicStroke(20.0f);
private Ellipse2D ellipse1 = new Ellipse2D.Float();
private Ellipse2D ellipse2 = new Ellipse2D.Float();
private Thread thread;
private BufferedImage bufferedImg;
private int w, h;
public void drawImage(Graphics2D g2) {
p += ip;
q += iq;
width += iw;
height += ih;
if (width > w / 3) {
width = w / 3;
iw = Math.random() * -w / 16 - 1;
}
if (width < w / 9) {
width = w / 9;
iw = Math.random() * w / 16 + 1;
}
if (height > h / 3) {
height = h / 3;
ih = Math.random() * -h / 16 - 1;
}
if (height < h / 9) {
height = h / 9;
ih = Math.random() * h / 16 + 1;
}
if ((p + width) > w) {
p = (w - width) - 1;
ip = Math.random() * -w / 32 - 1;
}
if (p < 0) {
p = 3;
ip = Math.random() * w / 32 + 1;
}
if ((q + height) > h) {
q = (h - height) - 2;
iq = Math.random() * -h / 32 - 1;
}
if (q < 0) {
q = 3;
iq = Math.random() * h / 32 + 1;
}
ellipse1.setFrame(p, q, width, height);
g2.setClip(ellipse1);
ellipse2.setFrame(p + 6, q + 5, width - 10, height - 10);
g2.clip(ellipse2);
path.reset();
path.moveTo(-w / 3.0f, -h / 9.0f);
path.lineTo(+w / 3.0f, -h / 9.0f);
path.lineTo(-w / 5.0f, +h / 3.0f);
path.lineTo(+0.0f, -h / 3.0f);
path.lineTo(+w / 5.0f, +h / 3.0f);
path.closePath();
affineTransform.setToIdentity();
affineTransform.translate(w * .5f, h * .5f);
g2.transform(affineTransform);
g2.setStroke(stroke);
g2.setPaint(Color.cyan);
g2.draw(path);
affineTransform.setToIdentity();
g2.setTransform(affineTransform);
g2.setPaint(Color.red);
for (int qq = 0; qq < h; qq += 40) {
for (int pp = 0, k = 0; pp < w; k++, pp += 40) {
switch (k) {
case 0:
ellipse1.setFrame(pp, qq, 20, 20);
g2.fill(ellipse1);
break;
case 1:
ellipse2.setFrame(pp, qq, 20, 20);
g2.fill(ellipse2);
k = -1;
}
}
}
}
public Graphics2D createDemoGraphics2D(Graphics g) {
Graphics2D g2 = null;
if (bufferedImg == null || bufferedImg.getWidth() != w || bufferedImg.
getHeight() != h) {
bufferedImg = (BufferedImage) createImage(w, h);
}
if (bufferedImg != null) {
g2 = bufferedImg.createGraphics();
g2.setBackground(getBackground());
}
g2.clearRect(0, 0, w, h);
return g2;
}
public void paint(Graphics g) {
w = getWidth();
h = getHeight();
if (w <= 0 || h <= 0)
return;
Graphics2D g2 = createDemoGraphics2D(g);
drawImage(g2);
g2.dispose();
if (bufferedImg != null && isShowing()) {
g.drawImage(bufferedImg, 0, 0, this);
}
}
public void start() {
thread = new Thread(this);
thread.start();
}
public synchronized void stop() {
thread = null;
}
public void run() {
Thread me = Thread.currentThread();
while (thread == me && isShowing()) {
Graphics g = getGraphics();
paint(g);
g.dispose();
thread.yield();
}
}
public static void main(String s[]) {
final ClipImageExample clip = new ClipImageExample();
JFrame frame = new JFrame("Clip Image Example");
frame.getContentPane().add("Center", demo);
frame.setSize(new Dimension(450, 300));
frame.show();
clip.start();
}
}
- Attachments
-
- the output
- clipImage.gif (6.47 KiB) Viewed 7595 times
Topic Tags
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