Drawing Lines
Hello Java Friends,
I am relatively new to Java 2D and having some implementation problem.
I wanted to draw a shape e.g. (triangle or a figure with more nodes) and theneach node will be connected to the rest nodes with lines. E.g. I have a rectangle with four nodes A, B, C and D. A will connect to B, C and D. B will connect C, D and A. C will connect to D, A and B. D will connect A, B and C. It works only up to 3 nodes (triangle). Can someone give me some idea on how to solve the problem.
See code below:
//draw the line
GeneralPath circleLine =new GeneralPath(GeneralPath.WIND_EVEN_ODD, xPoints.length);
circleLine.moveTo(xPoints[0]+ circleSize[0]/2, yPoints[0] + circleSize[0]/2);
g2d.setColor(Color.green);
g2d.setStroke(new BasicStroke(1));
for (int index = 1; index < xPoints.length; index++){
for (int indey = 1; indey < yPoints.length; indey++){
circleLine.lineTo(xPoints[indey] + circleSize[0]/2, yPoints[indey] + circleSize[0]/2);
}
}
circleLine.closePath();
g2d.draw(circleLine);
Thanks,
Jona_T
[1444 byte] By [
Jona_Ta] at [2007-11-26 23:58:51]
# 1
Here's an example how to draw a Clique:
import java.awt.Color;
import java.awt.Graphics2D;
import java.awt.Polygon;
import java.awt.image.BufferedImage;
import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JLabel;
public class DrawCliqueTest {
public static void main(String[] args) {
try {
JFrame frame = new JFrame();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
BufferedImage image = new BufferedImage(300, 300, BufferedImage.TYPE_INT_RGB);
Graphics2D g = image.createGraphics();
g.setColor(Color.WHITE);
g.fillRect(0, 0, image.getWidth(), image.getHeight());
g.setColor(Color.BLACK);
Polygon poly = new Polygon(new int[] {50, 250, 250, 50, 10}, new int[] {50, 50, 250, 250, 150}, 5);
// Draw a line between every pair of points
for (int i = 0; i < poly.npoints-1; i++)
for (int j = i+1; j < poly.npoints; j++)
g.drawLine(poly.xpoints[i], poly.ypoints[i], poly.xpoints[j], poly.ypoints[j]);
g.dispose();
frame.add(new JLabel(new ImageIcon(image)));
frame.pack();
frame.setVisible(true);
} catch (Exception e) {e.printStackTrace();}
}
}
