correct way to move a node by dragging in javafx 2?

Question

I\'m converting a Swing/Graphics2D app with a lot of custom painting to a JavaFX2 app. Although I absolutely love the new API, I seem to have a performance problem when pain

Answer 1

Drag Sphere

@Override
public void initialize(URL location, ResourceBundle resources) {
    super.initialize(location, resources);
    labelTableName.setText("Table Categories");

    final PhongMaterial blueMaterial = new PhongMaterial();
    blueMaterial.setDiffuseColor(Color.BLUE);
    blueMaterial.setSpecularColor(Color.LIGHTBLUE);

    final Sphere sphere = new Sphere(50);
    sphere.setMaterial(blueMaterial);

    final Measure dragMeasure = new Measure();
    final Measure position = new Measure();
    sphere.setOnMousePressed(mouseEvent -> {
        dragMeasure.x = mouseEvent.getSceneX() - position.x;
        dragMeasure.y = mouseEvent.getSceneY() - position.y;
        sphere.setCursor(Cursor.MOVE);
    });
    sphere.setOnMouseDragged(mouseEvent -> {
        position.x = mouseEvent.getSceneX() - dragMeasure.x;
        position.y = mouseEvent.getSceneY() - dragMeasure.y;
        sphere.setTranslateX(position.x);
        sphere.setTranslateY(position.y);
    });
    sphere.setOnMouseReleased(mouseEvent -> sphere.setCursor(Cursor.HAND));
    sphere.setOnMouseEntered(mouseEvent -> sphere.setCursor(Cursor.HAND));

    bottomHeader.getChildren().addAll( sphere);

}

class Measure {
    double x, y;

    public Measure() {
        x = 0; y = 0;
    }
}