[JAVA][Beginning Java 8 Games Development]

Chapter 4 ■ An Introduction to JavaFX 8: Exploring the Capabilities of the Java 8 Multimedia Engine
Figure 4-7. Run the project to look at the transparent Stage object; something is still set to White
Because you are using a StackPane object to implement layers in the InvinciBagel application, this is the next
level up that you need to try to set a transparency value for. Evidently, JavaFX uses a Color.WHITE default background
color value for all its objects. If I were on the JavaFX design team, I would be arguing for this to be changed to the
Color.TRANSPARENT constant, but, of course, this might confuse new users, as alpha channel and compositing layers
are advanced concepts.
The javafx.scene.layout.StackPane class is subclassed from the javafx.scene.layout.Region class, which has a
.setBackground() method for setting the Background (class or object) value. Again, a TRANSPARENT value constant
must be available, as you always need to set background values as transparent, especially for Java 8 game design.
Interestingly, things are not always as straightforward and consistent as you would want them to be in Java
programming, as, to achieve exactly the same end result (installing a transparent background color/image plate
for the design element), you have used thus far three different method calls, passing three custom object types:
.initStyle(StageStyle object), .setFill(Color object), and .setBackground(Background object).
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