Java draw triangle draw method?
hi
how would i construct the draw method for an triangle using the 'public void draw (graphics g ) method? im unsure how to use the g.fillPolygon and g.drawPolygon?
i have this for drawing a rectangle and this works for a rectangle:
public void draw(Graphics g) {
g.setColor(colorFill);
g.fillRect(p.x, p.y, width, height);
g.setColor(colorBorder);
g.drawRect(p.x, p.y, width, height);
drawHandles(g);
}
View Answers
August 13, 2012 at 6:03 PM
Here is an example that draws a triangle using drawPolygon method.
import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
public class DrawTriangle extends JPanel {
public void paintComponent(Graphics g) {
super.paintComponent(g);
g.setColor(Color.red);
Polygon polygon1= new Polygon();
for (int i = 0; i < 3; i++){
polygon1.addPoint((int) (40 + 50 * Math.cos(i * 2 * Math.PI / 3)),
(int) (150 + 50 * Math.sin(i * 2 * Math.PI / 3)));
}
g.drawPolygon(polygon1);
}
public static void main(String[] args) {
JFrame frame = new JFrame();
frame.setSize(350, 250);
Container contentPane = frame.getContentPane();
contentPane.add(new DrawTriangle());
frame.show();
}
}
If you want to use Line2D class to draw a triangle, then please go through the following link:
http://www.roseindia.net/java/example/java/swing/graphics2D/triangle-line2d.shtml
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