|
import java.awt.BasicStroke;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Rectangle;
import java.awt.RenderingHints;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.awt.geom.GeneralPath;
import java.awt.image.BufferedImage;
import javax.swing.JFrame;
import javax.swing.JPanel;
public class GeneralPathDemo extends JPanel {
int x, y, x1, y1, x2, y2;
GeneralPath oddShape;
BufferedImage bi;
Graphics2D big;
boolean firstTime;
Rectangle area;
public GeneralPathDemo() {
oddShape = new GeneralPath();
firstTime = true;
area = new Rectangle();
}
public GeneralPath createPath() {
oddShape.moveTo(20, 30);
oddShape.lineTo(30, 40);
oddShape.lineTo(50, 10);
oddShape.lineTo(70, 20);
oddShape.curveTo(10, 90, 100, 50, 34, 99);
return oddShape;
}
public void paintComponent(Graphics g) {
// super.paintComponent(g);
Graphics2D g2 = (Graphics2D) g;
if (firstTime) {
Dimension dim = getSize();
int w = dim.width;
int h = dim.height;
oddShape = createPath();
area = new Rectangle(w, h);
bi = (BufferedImage) createImage(w, h);
big = bi.createGraphics();
big.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
RenderingHints.VALUE_ANTIALIAS_ON);
firstTime = false;
}
// Clears the shape that was previously drawn.
big.setColor(Color.white);
big.fillRect(0, 0, area.width, area.height);
big.setColor(Color.magenta);
big.setStroke(new BasicStroke(3.0f));
big.draw(oddShape);
// Draws the buffered image to the screen.
g2.drawImage(bi, 0, 0, this);
}
public static void main(String s[]) {
JFrame f = new JFrame("Odd Shape");
f.addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
System.exit(0);
}
});
f.getContentPane().add(new GeneralPathDemo());
f.setSize(new Dimension(350, 200));
f.setVisible(true);
}
}
|
