// -----------------------------------------------------------------
// Draws the fractal recursively. Base case is an order of 1 for
// which a simple straight line is drawn. Otherwise three
// intermediate points are computed, and each line segment is
// drawn as a fractal.
// -----------------------------------------------------------------
public void branch(Graphics2D g2, Double x, Double y, Double length, Double angle, int order) {
// g2.draw(Line2D.Double() line = new Line2D.Double());
double angle1 = angle + bangle;
double angle2 = angle - bangle;
double angle3 = angle + 180;
length = length * bfrac;
double endX1 = (x - length * Math.sin(Math.toRadians(angle1)));
double endY1 = (y - length * Math.cos(Math.toRadians(angle1)));
double endX2 = (x - length * Math.sin(Math.toRadians(angle2)));
double endY2 = (y - length * Math.cos(Math.toRadians(angle2)));
double endX3 = (x - length * Math.sin(Math.toRadians(angle3)));
double endY3 = (y - length * Math.cos(Math.toRadians(angle3)));
g2.draw(new Line2D.Double(x, y, endX1, endY1));
g2.draw(new Line2D.Double(x, y, endX2, endY2));
g2.draw(new Line2D.Double(x, y, endX3, endY3));
if (order == 1) g2.draw(new Line2D.Double(x, y, x, y - length));
else {
branch(g2, endX1, endY1, length, angle1, order - 1);
branch(g2, endX2, endY2, length, angle2, order - 1);
// branch (g2, endX3, endY3, length, angle3, order-1 );
}
}
// -----------------------------------------------------------------
// Performs the initial calls to the drawFractal method.
// -----------------------------------------------------------------
public void paintComponent(Graphics page) {
super.paintComponent(page);
Graphics2D g2 = (Graphics2D) page;
page.setColor(Color.green);
branch(g2, 200.0, 300.0, 100.0, 30.0, 10);
// drawFractal (current, TOPX, TOPY, LEFTX, LEFTY, page);
// drawFractal (current, LEFTX, LEFTY, RIGHTX, RIGHTY, page);
// drawFractal (current, RIGHTX, RIGHTY, TOPX, TOPY, page);
}
