alexandra

import java.awt.Graphics2D;
import javafx.scene.canvas.Canvas;
import javafx.scene.canvas.GraphicsContext;
import javafx.scene.paint.Color;

/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
/**
 *
 * @author student
 */
public class Tree extends Canvas {

    GraphicsContext g2 = super.getGraphicsContext2D();

    public Tree() {
        super();
        setWidth(500);
        setHeight(500);
        draw(100, 250, 500, 250, 400);
    }

    public void draw(int n, double x1, double y1, double x2, double y2) {
        g2.setFill(Color.RED);
        g2.setLineWidth(2);
        int len = n;
        if (n > 1) {
            g2.strokeLine(x1, y1, x2, y2);
            len-=20;
              draw(len, x2, y2, x2 - len, y2-len);
            draw(len, x2, y2, x2 +len, y2-len);

        }

    }

}

*************************
/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */

import javafx.application.Application;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.Label;
import javafx.scene.layout.Pane;
import javafx.scene.layout.StackPane;
import javafx.stage.Stage;

/**
 *
 * @author student
 */
public class z5 extends Application {

    @Override
    public void start(Stage primaryStage) {
       Pane root = new Pane();
       Label l = new Label("");
        root.getChildren().add(new Tree());
        Scene scene = new Scene(root, 500, 500);

        primaryStage.setTitle("COSMO");
        primaryStage.setScene(scene);
        primaryStage.show();
        primaryStage.setResizable(false);
    }

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        launch(args);
    }

}