Java Code Examples for javafx.scene.shape.Circle#getCenterX()

private void catchEnemy(Circle hero,  List<Circle> apples, Pane canvas) {
    double heroX = hero.getTranslateX() + hero.getCenterX();
    double heroY = hero.getTranslateY() + hero.getCenterY();
    for (Circle apple : apples) {
        double enemyX = apple.getLayoutX() - apple.getRadius() / 2;
        double enemyY = apple.getLayoutY() - apple.getRadius() / 2;
        if (heroX + hero.getRadius() >= enemyX
                && heroX <= enemyX
                && heroY + hero.getRadius() >= enemyY
                && heroY <= enemyY) {
            canvas.getChildren().remove(apple);
            break;
        }
    }
}
 

@Override // Override the start method in the Application class
public void start(Stage primaryStage) {
	// Create a pane
	Pane pane = new Pane();

	// Create two circles
	Circle c1 = new Circle(20 + Math.random() * 201,
		20 + Math.random() * 201, 15);
	c1.setFill(Color.WHITE);
	c1.setStroke(Color.BLACK);
	
	Circle c2 = new Circle(20 + Math.random() * 201,
		20 + Math.random() * 201, 15);
	c2.setFill(Color.WHITE);
	c2.setStroke(Color.BLACK);

	// Create a line
	Line line = new Line(c1.getCenterX(), c1.getCenterY(),
		c2.getCenterX(), c2.getCenterY());

	// Add nodes to pane
	pane.getChildren().addAll(line, c1, c2, new Text(c1.getCenterX(), 
		c1.getCenterY(), "1"), new Text(c2.getCenterX(), c2.getCenterY(), "2"));

	// Create a scene and place it in the stage
	Scene scene = new Scene(pane);
	primaryStage.setTitle("Exercise_14_22"); // Set the stage title
	primaryStage.setScene(scene); // Place the scene in the stage
	primaryStage.show(); // Display the stage
}
 

/** Return a Polygon of specified properties */
private Polygon getPolygon(Circle c) {
	double length = c.getRadius() / 4;
	Polygon p = new Polygon(c.getCenterX(), c.getCenterY() - length,
		c.getCenterX() - length, c.getCenterY() + length, c.getCenterX() + length, 
		c.getCenterY() + length);
	p.setFill(Color.WHITE);
	p.setStroke(Color.BLACK);
	return p;
}
 

@Override // Override the start method in the Application class
public void start(Stage primaryStage) {
	// Create a pane
	Pane pane = new Pane();

	// Create two circles
	Circle circle1 = new Circle(Math.random() * 201, Math.random() * 201, 15);
	Circle circle2 = new Circle(Math.random() * 201, Math.random() * 201, 15);

	// Create a line
	Line line = new Line(circle1.getCenterX(), circle1.getCenterY(),
		circle2.getCenterX(), circle2.getCenterY());

	// Calculate distane between the two centers of the circles
	double distance = Math.sqrt(Math.pow(line.getEndX() - line.getStartX(), 2)
		+ Math.pow(line.getEndY() - line.getStartY(), 2));

	// Create a text
	double x = (line.getStartX() + line.getEndX()) / 2;
	double y = (line.getStartY() + line.getEndY()) / 2;
	Text text = new Text(x, y, String.valueOf(distance));
	
	// Add nodes to pane
	pane.getChildren().addAll(circle1, circle2, line, text);

	// Create a scene and place it in the stage
	Scene scene = new Scene(pane);
	primaryStage.setTitle("Exercise_14_21"); // Set the stage title 
	primaryStage.setScene(scene); // Place the scene in the stage
	primaryStage.show(); // Display the stage
}
 

public static String convertCircle(final Circle CIRCLE) {
    final StringBuilder fxPath = new StringBuilder();
    final double CENTER_X         = CIRCLE.getCenterX() == 0 ? CIRCLE.getRadius() : CIRCLE.getCenterX();
    final double CENTER_Y         = CIRCLE.getCenterY() == 0 ? CIRCLE.getRadius() : CIRCLE.getCenterY();
    final double RADIUS           = CIRCLE.getRadius();
    final double CONTROL_DISTANCE = RADIUS * KAPPA;
    // Move to first point
    fxPath.append("M ").append(CENTER_X).append(" ").append(CENTER_Y - RADIUS).append(" ");
    // 1. quadrant
    fxPath.append("C ").append(CENTER_X + CONTROL_DISTANCE).append(" ").append(CENTER_Y - RADIUS).append(" ")
          .append(CENTER_X + RADIUS).append(" ").append(CENTER_Y - CONTROL_DISTANCE).append(" ")
          .append(CENTER_X + RADIUS).append(" ").append(CENTER_Y).append(" ");
    // 2. quadrant
    fxPath.append("C ").append(CENTER_X + RADIUS).append(" ").append(CENTER_Y + CONTROL_DISTANCE).append(" ")
          .append(CENTER_X + CONTROL_DISTANCE).append(" ").append(CENTER_Y + RADIUS).append(" ")
          .append(CENTER_X).append(" ").append(CENTER_Y + RADIUS).append(" ");
    // 3. quadrant
    fxPath.append("C ").append(CENTER_X - CONTROL_DISTANCE).append(" ").append(CENTER_Y + RADIUS).append(" ")
          .append(CENTER_X - RADIUS).append(" ").append(CENTER_Y + CONTROL_DISTANCE).append(" ")
          .append(CENTER_X - RADIUS).append(" ").append(CENTER_Y).append(" ");
    // 4. quadrant
    fxPath.append("C ").append(CENTER_X - RADIUS).append(" ").append(CENTER_Y - CONTROL_DISTANCE).append(" ")
          .append(CENTER_X - CONTROL_DISTANCE).append(" ").append(CENTER_Y - RADIUS).append(" ")
          .append(CENTER_X).append(" ").append(CENTER_Y - RADIUS).append(" ");
    // Close path
    fxPath.append("Z");
    return fxPath.toString();
}
 

private Node edge(Circle n, Circle m) {
	Line line = new Line(n.getCenterX(), n.getCenterY(), m.getCenterX(), m.getCenterY());
	line.setStroke(Color.BLACK);
	return line;
}
 

private Text getText(Circle circle1, Circle circle2) {
	return new Text((circle1.getCenterX() + circle2.getCenterX()) / 2, 
		(circle1.getCenterY() + circle2.getCenterY()) / 2, 
		distance(circle1, circle2));
}
 

private Line getLine(Circle circle1, Circle circle2) {
	return new Line(circle1.getCenterX(), circle1.getCenterY(),
		circle2.getCenterX(), circle2.getCenterY());
}
 

/**
 * Converts the given JavaFX {@link Circle} to a
 * {@link org.eclipse.gef.geometry.planar.Ellipse}.
 *
 * @param circle
 *            The JavaFX {@link Circle} to convert.
 * @return The newly created
 *         {@link org.eclipse.gef.geometry.planar.Ellipse} that describes
 *         the given {@link Circle}.
 */
public static org.eclipse.gef.geometry.planar.Ellipse toEllipse(
		Circle circle) {
	return new org.eclipse.gef.geometry.planar.Ellipse(
			circle.getCenterX() - circle.getRadius(),
			circle.getCenterY() - circle.getRadius(),
			circle.getRadius() + circle.getRadius(),
			circle.getRadius() + circle.getRadius());
}