You will use the FXGraphicsTemplate for this.

Setup

Use the FXGraphicsTemplate for this assignment. Change the class name to something meaningful and

change the window title, and size of the stage to whatever you want.

When your program runs, the first thing you should do is create a star field by displaying a whole bunch

of randomly$-$placed stars $($i$.$e$.$ small circles or squares$)$ on a black or very dark blue screen. You can use

the formula Math.random$()*$MAX to generate a random value between $0$ and MAX. It$$s up to you

how many stars you display in this way but it should be enough to look like the actual night sky$.$ To

make it look more realistic, you could also vary the size or brightness of the stars.

Input

Then have a dialog with the user $($don$$t show the JavaFX stage until after this dialog is over$).$ This dialog

should ask the user for the following:

$$ Number of stars in the constellation

$$ Enter the X and Y values for each star

position

$$ Title of their constellation

Make sure the user cannot enter x or y values

that would appear off screen.

As the user is entering $($legal$)$ values, you

should be drawing stars on the screen and

connecting each star to the last one by drawing

a line.

You can decide exactly what all this will look

like, but your stars should be different enough

that they will stand out from the other stars

that are already on the screen.

When the user is finished, connect the last star back to the first one. Draw the constellation title somewhere on

the screen using a nice font and color, and

display your own programming credits on

the screen as well $($i$.$e$.$app created by

Josephine Smith$$ or something like that

EX of FXGraphicsTemplate.java:

import javafx.application.Application;

import javafx.scene.Group;

import javafx.scene.Scene;

import javafx.scene.canvas.Canvas;

import javafx.scene.canvas.GraphicsContext;

import javafx.stage.Stage;

import static javafx.application.Application.launch;

$/$

$*$

$*$

$$

$*$

$$Use this template to create drawings in FX

$.$

$$Change the name of the class and

$$

$*$

$$put your own name as author below. Change the size of the canvas and the

$$

$*$

$$window title where marked and add your drawing code where marked.

$$

$*$

$$

$*$

$$

$$

$*$

$/$

public class FXGraphicsTemplate extends Application

$\{$

$$

$/$

$*$

$*$

$$

$*$

$$Start method

$($

use this instead of main

$)$

$.$

$$

$*$

$$

$*$

$$@param stage The FX stage to draw on

$$

$*$

$$@throws Exception

$$

$*$

$/$

$$ @Override

$$ public void start

$($

Stage stage

$)$

$$throws Exception

$\{$

$$ Group root

$=$

$$new Group

$($

$)$

;

$$ Scene scene

$=$

$$new Scene

$($

root

$)$

;

$$ Canvas canvas

$=$

$$new Canvas

$($

$5$

$0$

$0$

$,$

$4$

$0$

$0$

$)$

;

$/$

$/$

$$Set canvas Size in Pixels

$$ stage.setTitle

$($

$"$

FXGraphicsTemplate

$"$

$)$

;

$/$

$/$

$$Set window title

$$ root.getChildren

$($

$)$

$.$

add

$($

canvas

$)$

;

$$ stage.setScene

$($

scene

$)$

;

$$ GraphicsContext gc

$=$

$$canvas$.$getGraphicsContext

$2$

D

$($

$)$

;

$$

$/$

$/$

$$YOUR CODE STARTS HERE

$$

$$

$$

$/$

$/$

$$YOUR CODE STOPS HERE

$$ stage.show

$($

$)$

;

$$

$\}$

$$

$/$

$*$

$*$

$$

$*$

$$The actual main method that launches the app.

$$

$*$

$$

$*$

$$@param args unused

$$

$*$

$/$

$$ public static void main

$($

String

$[$

$]$

$$args

$)$

$\{$

$$ launch

$($

args

$)$

;

$$

$\}$

$\}$