Re: Graphics: drawPolygon vs fillPolygon

From:
"Daniel Pitts" <googlegroupie@coloraura.com>
Newsgroups:
comp.lang.java.programmer
Date:
3 Apr 2007 12:01:00 -0700
Message-ID:
<1175626860.127423.312140@n76g2000hsh.googlegroups.com>
On Apr 3, 11:21 am, Christopher Benson-Manica
<a...@ukato.freeshell.org> wrote:

Knute Johnson <nos...@rabbitbrush.frazmtn.com> wrote:

It works fine for me. Show us a complete, compilable example that
demonstrates your problem.


You will note that the drawn polygon and the filled polygon are not
the same size:

import javax.swing.*;
import java.awt.*;

public class Foo extends JFrame {
    private final Polygon polygon = new Polygon(
            new int[]{2,8,5},
            new int[]{5,5,2},
            3
    );

    private Foo() {
        super("Test");
        setLayout(new GridLayout(2,1));
        final JLabel A = new JLabel("A");
        getContentPane().add(A);
        A.setIcon(new Icon() {
            public void paintIcon(Component c, Graphics g, int x, int y) {
                g.drawPolygon(polygon);
            }

            public int getIconWidth() {
                return 11;
            }

            public int getIconHeight() {
                return 11;
            }
        });
        final JLabel B = new JLabel("B");
        getContentPane().add(B);
        B.setIcon(new Icon() {
            public void paintIcon(Component c, Graphics g, int x, int y) {
                g.fillPolygon(polygon);
            }

            public int getIconWidth() {
                return 11;
            }

            public int getIconHeight() {
                return 11;
            }
        });
    }

    public static void main(String[] args) throws Exception {
        final Foo foo = new Foo();
        foo.pack();
        foo.setVisible(true);
    }}

--
C. Benson Manica | I *should* know what I'm talking about - if I
cbmanica(at)gmail.com | don't, I need to know. Flames welcome.


The first draws the outline, the second fills the inside.

Think of it as drawPoly will draw the edges, where fillPoly will fill
everything between the edges.

You might be better off using Shape classes and Graphics2D to get the
effect you want.

Hope this helps.

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