Creating Visual Effects in JavaFX

Previous
Next

2 Using the Bloom Effect

The bloom effect makes brighter portions an image appear to glow, based on a configurable threshold. The threshold varies from 0.0 to 1.0. By default, the threshold is set to 0.3.

Figure 2-1 shows the bloom effect at the default threshold and at a threshold of 1.0.

Figure 2-1 Bloom Effect

Description of Figure 2-1 follows
Description of "Figure 2-1 Bloom Effect"

Example 2-1 shows a code snippet from the sample application that is using the bloom effect.

Example 2-1 Bloom Example

    static Node bloom() {
        Group g = new Group();
 
        Rectangle r = new Rectangle();
        r.setX(10);
        r.setY(10);
        r.setWidth(160);
        r.setHeight(80);
        r.setFill(Color.DARKBLUE);
 
        Text t = new Text();
        t.setText("Bloom!");
        t.setFill(Color.YELLOW);
        t.setFont(Font.font("null", FontWeight.BOLD, 36));
        t.setX(25);
        t.setY(65);
 
        g.setCache(true);
        //g.setEffect(new Bloom());
        Bloom bloom = new Bloom();
        bloom.setThreshold(1.0);
        g.setEffect(bloom);
        g.getChildren().add(r);
        g.getChildren().add(t);
        g.setTranslateX(350);
        return g;
    }
Previous
Next