private void doPicking() {
Point mouse = canvas.getMousePosition();
if (mouse == null) {
clearLabel();
} else {
vec2.x = mouse.x;
vec2.y = canvas.getHeight() - mouse.y;
// create ray
Vector3f end = scene.getCamera().getWorldCoordinates(vec2, 0.2f);
Vector3f start = scene.getCamera().getLocation();
Ray ray = new Ray(start, end.subtractLocal(start).normalizeLocal());
// do collision checking
CollisionResults results = new CollisionResults();
scene.getRootNode().collideWith(ray, results);
CollisionResult result = results.getClosestCollision();
if (result != null) {
Vector3f contactPoint = result.getContactPoint();
setLabel(contactPoint);
} else {
clearLabel();
}
}
}
private void activate(LevelScene scene, Component canvas) {
this.scene = scene;
this.canvas = canvas;
scene.getRootNode().addControl(pickingControl);
}