Snow Falling Animation in JavaFX

Hi GuyZ,
          This tutorial will show how to create snow falling effect in JavaFX. The first step is creating snow particles. The best shape to create snow particles is circle. So, first we have to create some circles to make them snow particles.

Download Source: https://github.com/ajithkp560/SnowFallingAnimationJavaFX

Code to initialize circle

        Circle c[] = new Circle[2000];
        for (int i = 0; i < 2000; i++) {
            c[i] = new Circle(1, 1, 1);
            c[i].setRadius(random.nextDouble() * 3);
            Color color = Color.rgb(255, 255, 255, random.nextDouble());
            c[i].setFill(color);
            root.getChildren().add(c[i]);
        }

Yeah, we have initialized the circles. Next step is animating them to fall from top to bottom.

Animation code to fall from top to bottom

        Animation fall = TranslateTransitionBuilder.create()
                .node(c)
                .fromY(-200)
                .toY(534+200) //WIndow height = 534
                .toX(random.nextDouble() * c.getCenterX())
                .duration(Duration.seconds(time))
                .onFinished(new EventHandler<ActionEvent>() {
                    @Override
                    public void handle(ActionEvent t) {
                        Raining(c);
                    }
                }).build();

Full Source Code

import java.util.Random;
import javafx.animation.Animation;
import javafx.animation.TranslateTransitionBuilder;
import javafx.application.Application;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.image.Image;
import javafx.scene.image.ImageView;
import javafx.scene.layout.AnchorPane;
import javafx.scene.layout.StackPane;
import javafx.scene.paint.Color;
import javafx.scene.shape.Circle;
import javafx.stage.Stage;
import javafx.util.Duration;

/**
 *
 * @author Ajith Kp [ajithkp560] http://www.terminalcoders.blogspot.com
 * http://fb.com/ajithkp560
 *
 */
public class SnowFallingEffect extends Application {

    Random random = new Random();
    AnchorPane root = new AnchorPane();

    @Override
    public void start(Stage primaryStage) {
        Circle c[] = new Circle[2000];
        ImageView background = new ImageView(new Image(getClass().getResource("Backgroundx.png").toString()));
        root.getChildren().add(background);

        for (int i = 0; i < 2000; i++) {
            c[i] = new Circle(1, 1, 1);
            c[i].setRadius(random.nextDouble() * 3);
            Color color = Color.rgb(255, 255, 255, random.nextDouble());
            c[i].setFill(color);
            root.getChildren().add(c[i]);
            Raining(c[i]);
        }
        Scene scene = new Scene(root, 950, 534);
        primaryStage.setTitle("SnowFalling Animation : Ajith Kp");
        primaryStage.setScene(scene);
        primaryStage.show();
    }

    public void Raining(Circle c) {
        c.setCenterX(random.nextInt(950));//Window width = 950
        int time = 10 + random.nextInt(50);
        Animation fall = TranslateTransitionBuilder.create()
                .node(c)
                .fromY(-200)
                .toY(534+200) //WIndow height = 534
                .toX(random.nextDouble() * c.getCenterX())
                .duration(Duration.seconds(time))
                .onFinished(new EventHandler<ActionEvent>() {
                    @Override
                    public void handle(ActionEvent t) {
                        Raining(c);
                    }
                }).build();
        fall.play();
    }

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

}