JavaFX 3D

[Richard Bair]

Hi Tom,

Here is an example application. Run it, and move the slider. You can see several differences between the left & right examples. You can switch between "createContent" and "createContent2" for different examples of the problems.

Richard

package javafxapplication1;

import javafx.application.Application;
import javafx.beans.InvalidationListener;
import javafx.beans.Observable;
import javafx.geometry.Insets;
import javafx.scene.Node;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.Slider;
import javafx.scene.control.Tab;
import javafx.scene.control.TabPane;
import javafx.scene.effect.DropShadow;
import javafx.scene.layout.HBox;
import javafx.scene.layout.StackPane;
import javafx.scene.layout.VBox;
import javafx.scene.paint.Color;
import javafx.scene.shape.Rectangle;
import javafx.stage.Stage;

/**
 *
 * @author richardbair
 */
public class OpacityTest extends Application {
    @Override public void start(final Stage primaryStage) throws Exception {
        final Parent a = createContent2();
        final Parent b = createContent2();
        
        HBox hbox = new HBox();
        hbox.getChildren().addAll(a, b);
        
        final Slider slider = new Slider();
        slider.setMin(0);
        slider.setMax(1);
        slider.setValue(1);
        slider.valueProperty().addListener(new InvalidationListener() {
            @Override public void invalidated(Observable arg0) {
                a.setOpacity(slider.getValue());
                setOpacity(b, slider.getValue());
            }
        });
        
        VBox root = new VBox();
        root.setPadding(new Insets(5));
        root.getChildren().addAll(hbox, slider);
        
        Scene scene = new Scene(root);
        primaryStage.setScene(scene);
        primaryStage.show();
        primaryStage.setResizable(false);
    }
    
    private Parent createContent() {
        Rectangle cyan = new Rectangle(400, 400, Color.CYAN);
        Rectangle magenta = new Rectangle(300, 300, Color.MAGENTA);
        Rectangle yellow = new Rectangle(200, 200, Color.YELLOW);
        Rectangle black = new Rectangle(100, 100, Color.BLACK);
        
        StackPane stackPane = new StackPane();
        stackPane.getChildren().addAll(cyan, magenta, yellow, black);
        return stackPane;
    }
    
    private Parent createContent2() {
        TabPane tabPane = new TabPane();
        tabPane.getStyleClass().add(TabPane.STYLE_CLASS_FLOATING);
        Tab t1 = new Tab("First");
        Tab t2 = new Tab("Second");
        tabPane.getTabs().addAll(t1, t2);
        
        StackPane p1 = new StackPane();
        Button b1 = new Button("Button1");
        b1.setPrefSize(100, 100);
        b1.setEffect(new DropShadow());
        p1.getChildren().add(b1);
        t1.setContent(p1);
        
        StackPane p2 = new StackPane();
        Button b2 = new Button("Button2");
        b2.setPrefSize(100, 100);
        b2.setEffect(new DropShadow());
        p2.getChildren().add(b2);
        t2.setContent(p2);
        
        tabPane.setPrefSize(400, 400);
        
        StackPane stackPane = new StackPane();
        stackPane.getChildren().addAll(tabPane);
        return stackPane;
    }
    
    private void setOpacity(Parent parent, double value) {
        for (Node n : parent.getChildrenUnmodifiable()) {
            if (n instanceof Parent) {
                setOpacity((Parent)n, value);
            }
            n.setOpacity(value);
        }
    }
    
    public static void main(String[] args) {
        launch(args);
    }
}