JavaFX 2.2 MouseEvent in SubScene does not work properly - javafx-2

Question

I am trying to get this to work for sometime and I cannot figure out what wrong with my code. This leads me to believe there is some issues in SubScene Mouse listener. Any idea is appreciated.
Basically I have a scene contains two subscenes, one for the toolbar and one for the floor which has bunch of lines making it looks like tiles. I added mouse listeners so that when I clicked on the floor and move the mouse, the camera will move as if I am walking on the floor.
The problem is that the floor only recognize mouse event when I clicked on the intersection between the first vertical and the first horizontal line (yup, took me a while to figure that out). Mouse event should occur everywhere on entire floor.
Here is the code.
import javafx.application.Application;
import javafx.collections.ObservableList;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.scene.Group;
import javafx.scene.Node;
import javafx.scene.PerspectiveCamera;
import javafx.scene.Scene;
import javafx.scene.SceneAntialiasing;
import javafx.scene.SubScene;
import javafx.scene.control.Button;
import javafx.scene.input.MouseEvent;
import javafx.scene.shape.Line;
import javafx.stage.Stage;
public class FloorTest extends Application {
double mousex, mousey;
#Override
public void start(Stage primaryStage) {
Button btn = new Button();
btn.setText("Say 'Hello World'");
btn.setOnAction(new EventHandler<ActionEvent>() {
#Override
public void handle(ActionEvent event) {
System.out.println("Hello World!");
}
});
Group bargroup = new Group();
SubScene bar = new SubScene(bargroup, 300, 20, true, SceneAntialiasing.DISABLED);
bargroup.getChildren().add(btn);
Group floorgroup = new Group();
SubScene floor = new SubScene(floorgroup, 300, 250, true, SceneAntialiasing.DISABLED);
ObservableList<Node> list = floorgroup.getChildren();
for(int i = 0; i < (300/20); i++)
{
double x = i * 20;
Line line = new Line(x, 0, x, 250);
list.add(line);
}
for(int i = 0; i < (250/20); i++)
{
double y = i * 20;
Line line = new Line(0, y, 300, y);
list.add(line);
}
PerspectiveCamera camera = new PerspectiveCamera(false);
camera.setNearClip(0.1);
camera.setFarClip(10000.0);
camera.setTranslateZ(-200);
floor.setCamera(camera);
floor.setOnMousePressed((MouseEvent event) -> {
mousex = event.getSceneX();
mousey = event.getSceneY();
});
floor.setOnMouseDragged((MouseEvent event) -> {
double x = event.getSceneX();
double y = event.getSceneY();
camera.relocate(camera.getLayoutX() + (x - mousex), camera.getLayoutY() + (y - mousey));
});
Group mainroot = new Group();
mainroot.getChildren().addAll(floor, bar);
Scene scene = new Scene(mainroot, 300, 250, true);
primaryStage.setTitle("Hello World!");
primaryStage.setScene(scene);
primaryStage.show();
}
/**
* The main() method is ignored in correctly deployed JavaFX application.
* main() serves only as fallback in case the application can not be
* launched through deployment artifacts, e.g., in IDEs with limited FX
* support. NetBeans ignores main().
*
* #param args the command line arguments
*/
public static void main(String[] args) {
launch(args);
}
}

Answer 1

It seems that setting the subscene.setPickOnBounds(true) should help in proper recognition of the mouse events for the whole subscene. Tested with javafx 8.

Answer 2

Please try using scene instead of floor variable in event handlers
Example:
scene.setOnMousePressed((MouseEvent event) -> {
mousex = event.getSceneX();
mousey = event.getSceneY();
});
scene.setOnMouseDragged((MouseEvent event) -> {
double x = event.getSceneX();
double y = event.getSceneY();
camera.relocate(camera.getLayoutX() + (x - mousex), camera.getLayoutY() + (y - mousey));
});
That helps me