CSC-112 HW6 Traffic Light Simulator

ControlButtonsPane.java

/*
 * Antonio C. Silvestri
 * Traffic Light Simulator Application
 * Control Buttons Class
 * Exam #2
 * CSC-112 Intermediate Java
 * 4/6/2020
 */

import javafx.geometry.Pos;
import javafx.scene.control.Button;
import javafx.scene.layout.HBox;

public class ControlButtonsPane extends HBox {

	public ControlButtonsPane(TrafficLightPane tlp) {
		this.setSpacing(10);
		this.setAlignment(Pos.CENTER);
		
		Button btnRed = new Button("Red");
		btnRed.setOnAction(e -> tlp.turnRed());
		
		Button btnYellow = new Button("Yellow");
		btnYellow.setOnAction(e -> tlp.turnYellow());
		
		Button btnGreen = new Button("Green");
		btnGreen.setOnAction(e -> tlp.turnGreen());
		
		this.getChildren().addAll(btnRed, btnYellow, btnGreen);
	}

}

TrafficLightApp.java

/*
 * Antonio C. Silvestri
 * Traffic Light Simulator Application
 * Main App Class
 * Exam #2
 * CSC-112 Intermediate Java
 * 4/6/2020
 */

import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.layout.BorderPane;
import javafx.stage.Stage;

public class TrafficLightApp extends Application {

	@Override
	public void start(Stage primaryStage) {
		TrafficLightPane tlp = new TrafficLightPane();
		ControlButtonsPane cp = new ControlButtonsPane(tlp);
		BorderPane bp = new BorderPane();
		bp.setCenter(tlp);
		bp.setBottom(cp);
		
		Scene scene = new Scene(bp);
		primaryStage.setTitle("Traffic Light App"); 
		primaryStage.setScene(scene);
		primaryStage.setResizable(false);
		primaryStage.show();
	}
	
	public static void main(String[] args) {
		Application.launch(args);
	}
}

TrafficLightPane.java

/*
 * Antonio C. Silvestri
 * Traffic Light Simulator Application
 * Traffic Light Class
 * Exam #2
 * CSC-112 Intermediate Java
 * 4/6/2020
 */

import javafx.scene.layout.Pane;
import javafx.scene.paint.Color;
import javafx.scene.shape.Circle;
import javafx.scene.shape.Rectangle;

public class TrafficLightPane extends Pane {
	private static final int RED = 0;
	private static final int YELLOW = 1;
	private static final int GREEN = 2;
	private static final int RADIUS = 30;

	private int state = RED;

	public TrafficLightPane() {
		this.setPrefSize(300, 350);
		this.paint();
	}

	private void paint() {
		this.getChildren().clear();
		this.setStyle("-fx-background: grey");

		Rectangle rect = new Rectangle();
		rect.setStroke(Color.BLACK);
		rect.setFill(Color.WHITE);
		rect.setX(110);
		rect.setY(40);
		rect.setHeight(220);
		rect.setWidth(80);
			
		Circle redCircle = new Circle(RADIUS);
		redCircle.setCenterX(150);
		redCircle.setCenterY(80);
		redCircle.setStroke(Color.BLACK);
		redCircle.setFill(this.state == RED ? Color.RED : Color.WHITE);
			
		Circle yellowCircle = new Circle(RADIUS);
		yellowCircle.setCenterX(150);
		yellowCircle.setCenterY(150);
		yellowCircle.setStroke(Color.BLACK);
		yellowCircle.setFill(this.state == YELLOW ? Color.YELLOW : Color.WHITE);
		
		Circle greenCircle = new Circle(RADIUS);	
		greenCircle.setCenterX(150);
		greenCircle.setCenterY(220);
		greenCircle.setStroke(Color.BLACK);
		greenCircle.setFill(this.state == GREEN ? Color.GREEN : Color.WHITE);

		getChildren().addAll(rect, redCircle, yellowCircle, greenCircle);
	}

	public void turnRed() {
		this.state = RED;
		paint();
	}

	public void turnYellow() {
		this.state = YELLOW;
		paint();
	}

	public void turnGreen() {
		this.state = GREEN;
		paint();
	}

}