Getting Started Sample | JavaFX 2 Tutorials and Documentation (original) (raw)

ColorfulCircles.java

/*

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package colorfulcircles;

import javafx.animation.KeyFrame; import javafx.animation.KeyValue; import javafx.animation.Timeline; import javafx.application.Application; import javafx.scene.Group; import javafx.scene.Node; import javafx.scene.Scene; import javafx.scene.effect.BlendMode; import javafx.scene.effect.BoxBlur; import javafx.scene.paint.Color; import javafx.scene.paint.CycleMethod; import javafx.scene.paint.LinearGradient; import javafx.scene.paint.Stop; import javafx.scene.shape.Circle; import javafx.scene.shape.Rectangle; import javafx.scene.shape.StrokeType; import javafx.stage.Stage; import javafx.util.Duration; import static java.lang.Math.random;

public class ColorfulCircles extends Application {

public static void main(String[] args) {
    launch(args);
}

@Override
public void start(Stage primaryStage) {
    Group root = new Group();
    Scene scene = new Scene(root, 800, 600, Color.BLACK);
    primaryStage.setScene(scene);
    Group circles = new Group();
    for (int i = 0; i < 30; i++) {
        Circle circle = new Circle(150, Color.web("white", 0.05));
        circle.setStrokeType(StrokeType.OUTSIDE);
        circle.setStroke(Color.web("white", 0.16));
        circle.setStrokeWidth(4);
        circles.getChildren().add(circle);
    }
    Rectangle colors = new Rectangle(scene.getWidth(), scene.getHeight(),
            new LinearGradient(0f, 1f, 1f, 0f, true, CycleMethod.NO_CYCLE, new Stop[]{
                new Stop(0, Color.web("#f8bd55")),
                new Stop(0.14, Color.web("#c0fe56")),
                new Stop(0.28, Color.web("#5dfbc1")),
                new Stop(0.43, Color.web("#64c2f8")),
                new Stop(0.57, Color.web("#be4af7")),
                new Stop(0.71, Color.web("#ed5fc2")),
                new Stop(0.85, Color.web("#ef504c")),
                new Stop(1, Color.web("#f2660f")),}));
    colors.widthProperty().bind(scene.widthProperty());
    colors.heightProperty().bind(scene.heightProperty());
    Group blendModeGroup =
            new Group(new Group(new Rectangle(scene.getWidth(), scene.getHeight(),
                 Color.BLACK), circles), colors);
    colors.setBlendMode(BlendMode.OVERLAY);
    root.getChildren().add(blendModeGroup);      
    circles.setEffect(new BoxBlur(10, 10, 3));
    Timeline timeline = new Timeline();
    for (Node circle : circles.getChildren()) {
        timeline.getKeyFrames().addAll(
                new KeyFrame(Duration.ZERO, // set start position at 0
                new KeyValue(circle.translateXProperty(), random() * 800),
                new KeyValue(circle.translateYProperty(), random() * 600)),
                new KeyFrame(new Duration(40000), // set end position at 40s
                new KeyValue(circle.translateXProperty(), random() * 800),
                new KeyValue(circle.translateYProperty(), random() * 600)));
    }
    // play 40s of animation
    timeline.play();
    primaryStage.show();
}

}