public void paint(Graphics g) {
Graphics2D g_2d = (Graphics2D) g;
Ellipse2D ellipse = new Ellipse2D.Double(0, 2, 80, 80);
Rectangle2D rect = new Rectangle2D.Double(40, 2, 80, 80);
Area a1 = new Area(ellipse);
Area a2 = new Area(rect);
a1.intersect(a2); // "Óë"
g_2d.fill(a1);
ellipse.setFrame(130, 2, 80, 80);
rect.setFrame(170, 2, 80, 80);
a1 = new Area(ellipse);
a2 = new Area(rect);
a1.add(a2); // "»ò"
g_2d.draw(a1);
ellipse.setFrame(0, 90, 80, 80);
rect.setFrame(40, 90, 80, 80);
a1 = new Area(ellipse);
a2 = new Area(rect);
a1.subtract(a2); // "²î"
g_2d.draw(a1);
ellipse.setFrame(130, 90, 80, 80);
rect.setFrame(170, 90, 80, 80);
a1 = new Area(ellipse);
a2 = new Area(rect);
a1.exclusiveOr(a2); // "Òì»ò"
g_2d.fill(a1);
}
/** the paintComponent -- paints the board every repaint() call. */
public void paintComponent(Graphics g) {
super.paintComponent(g);
Graphics2D g2 = (Graphics2D) g;
for (int i = 0; i < B_WIDTH; i++) {
for (int j = 0; j < B_HEIGHT; j++) {
Rectangle2D rect = new Rectangle2D.Double((i * 40) + 1, (j * 40) + 1, 38, 38);
g2.setPaint(balls[i][j].getColor());
g2.fill(rect);
Ellipse2D circle = new Ellipse2D.Double();
circle.setFrame(rect);
g2.setPaint(balls[i][j].getcColor());
g2.fill(circle);
}
}
}
public void paintComponent(Graphics g) {
Graphics2D g2 = (Graphics2D) g;
// draw a rectangle
double leftX = 100;
double topY = 100;
double width = 200;
double height = 150;
Rectangle2D rect = new Rectangle2D.Double(leftX, topY, width, height);
g2.setPaint(Color.BLACK);
g2.draw(rect);
g2.setPaint(Color.RED);
g2.fill(rect); // Note that the right and bottom edge are not painted
// over
// draw the enclosed ellipse
Ellipse2D ellipse = new Ellipse2D.Double();
ellipse.setFrame(rect);
g2.setPaint(new Color(0, 128, 128)); // a dull blue-green
g2.fill(ellipse);
}